Borehole Or Casing Condition Patents (Class 367/35)
  • Patent number: 11142971
    Abstract: Systems and methods for detecting a gas kick within a wellbore are provided. The system includes a rotatable tool including one or more acceleration sensors and/or oscillators. The method includes rotating the rotatable tool in contact with fluid inside the wellbore and detecting changes in rotational velocity of the rotatable tool to detect the gas kick. In other aspects, the method includes detecting a change in density of the fluid within the wellbore by at least one or more pressure waves to determine the gas kick within the wellbore.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: October 12, 2021
    Assignee: Landmark Graphics Corporation
    Inventors: Robello Samuel, Yuan Zhang
  • Patent number: 11143016
    Abstract: Methods are disclosed for evaluating a material on a remote side of a partition separating first and second domains wherein flexural waves within the partition are received by spaced-apart ultrasonic receivers and processed to determine the velocity of the waves propagating into the second domain from a first receiver to a second receiver located more remote from the transmitter than the first receiver and whose separation from the first receiver is known. Comparison of a theoretical phase velocity with the measured phase velocity of the recorded waves allows determination as to whether the flexural wave is propagating through solid. This may be based on a measurable deviation between the two curves occurring at a critical frequency, which may be identified by a perturbation in a group velocity plot. Discrimination may also be based on the gradient of a straight line that best-fits the attention dispersion of the frequency spectrum.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: October 12, 2021
    Assignee: Equanostic AS
    Inventors: Tore Lie Sirevaag, Tonni Franke Johansen
  • Patent number: 11091999
    Abstract: Various downhole logging tools and methods of using and making the same are disclosed. In one aspect a method evaluating cement bond quality in a well is provided. In a well with a particular casing/tubing configuration, waveforms of acoustic energy returning from the tubing and the casing with the tubing present are recorded. A frequency spectrum from the recorded waveforms is determined. Amplitudes of the returning acoustic energy at one or more preselected frequency(s) of interest of a range of frequencies at which the amplitudes are noticeably affected by cement bond quality for the particular casing/tubing configuration are determined. The determined amplitudes are compared with one or more baseline amplitudes to look for indications of cement bond quality. Other aspects involve time domain analysis.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: August 17, 2021
    Assignee: Probe Technology Services, Inc.
    Inventors: Jun Zhang, Yibing Zheng
  • Patent number: 11077521
    Abstract: A laser cutting apparatus conveyable within a casing lining at least a portion of a wellbore that extends into a subterranean formation. The laser cutting apparatus includes a housing, a deflector, a motor, a sensor, and a processing device. The deflector rotates relative to the housing to direct a laser beam to form a radial slot extending through the casing and into the subterranean formation. The motor rotates the deflector. The sensor generates information related to depth of the radial slot in real-time as the radial slot is formed by the laser beam. The processing device receives the information generated by the sensor and causes the motor to rotate the deflector based on the received information.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: August 3, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Bernard Montaron, Douglas Pipchuk
  • Patent number: 11002595
    Abstract: A variable-frequency light source is configured to emit a light beam and modulate a frequency of the light beam. A fiber optic cable is attached to the variable frequency light source. The fiber optic cable is configured to receive the light beam at an inlet and pass the light beam to an exit. Multiple optical detectors are attached to the fiber optic cable. Each of the optical detectors is configured to detect a specified frequency of light that is backscattered through the fiber optic cable. An actuation mechanism is attached to the fiber optic cable. The actuation mechanism is configured to deform the fiber optic cable in response to a stimulus.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: May 11, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Howard K. Schmidt, Jesus Manuel Felix Servin, Frode Hveding, Daniele Colombo
  • Patent number: 10927609
    Abstract: An earth-boring tool includes a cutting element comprising a hard material and at least one of a signal generator configured to provide an electromagnetic or acoustic signal to an interface between a surface of the hard material and a surface of a subterranean formation, and a sensor configured to receive an electromagnetic or acoustic signal from the interface. A method of forming a wellbore includes rotating the earth-boring tool within a wellbore and cutting formation material with a cutting element, transmitting a signal through the cutting element to an interface between the cutting element and the formation material, and measuring a response received at a sensor. A cutting element includes a transmitter oriented and configured to dispense a signal to an interface between the cutting surface and a surface of a formation and a sensor oriented and configured to measure a signal from the interface.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: February 23, 2021
    Assignee: Baker Hughes, a GE company, LLC
    Inventor: Rocco DiFoggio
  • Patent number: 10890058
    Abstract: A workflow using techniques for improving signal-to-noise ratio and decreasing interferences for Low-Frequency Distributed Acoustic Sensing is described.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: January 12, 2021
    Assignee: ConocoPhillips Company
    Inventors: Kyle R. Krueger, Ge Jin, Charles C. Mosher, Herbert W. Swan, Baishali Roy
  • Patent number: 10858933
    Abstract: The present disclosure provides methods and systems for analyzing cement integrity in a depth interval of a wellbore having a multiple string casing with an innermost annulus disposed inside at least one outer annulus. The method includes processing ultrasonic data obtained from ultrasonic measurements on the interval of the wellbore to determine properties of the innermost annulus. The method also includes processing sonic data obtained from sonic measurements on the interval of the wellbore to extract features of the sonic data. The features of the sonic data are input to a machine learning processing to determine properties of both the innermost annulus and the least one outer annulus. Additional processing of ultrasonic and sonic data can also be used to determine properties of both the innermost annulus and the least one outer annulus. These properties can be used to analyze cement integrity in the depth interval of the wellbore.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: December 8, 2020
    Assignee: Schlumberger Technology Corporation
    Inventors: Sandip Bose, Maja Skataric, Smaine Zeroug, Bikash Kumar Sinha
  • Patent number: 10823868
    Abstract: Methods and apparatus for acoustic velocity well logging. Methods may include estimating a property of an earth formation, including estimating a depth-dependent lateral tectonic strain profile for the earth formation by generating a linear-to-linear transformation constrained to map a first value of a shear wave velocity parameter of the formation to an estimated minimum value of lateral tectonic strain in at least one direction corresponding to at least one principal horizontal stress of the formation, and map a second value of the shear wave velocity parameter of the formation to an estimated maximum value of lateral tectonic strain in the at least one direction, wherein the strain values may be estimated using closure pressure. The first value of the shear wave velocity parameter may be a minimum value of shear wave slowness and the second value of the shear wave velocity parameter is a maximum value of shear wave slowness.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: November 3, 2020
    Assignee: Baker Hughes Holdings LLC
    Inventors: Eduardo Cazeneuve, Dee A. Moronkeji, Javier A. Franquet, Umesh Prasad
  • Patent number: 10801997
    Abstract: A method and system for inspecting cement downhole. The method may comprise inserting an inspection device inside a tubing. The inspection device may comprise a centralizing module as well as a transducer, an azimuthal receiver, and a telemetry module. The method may further comprise activating the transducer, wherein the transducer generates a low-frequency cylindrical acoustic wave with normal incidence, detecting the locations and strengths of resonances generated, and creating a graph with an information handling system for analysis.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: October 13, 2020
    Assignee: Gowell International, LLC
    Inventors: Jiajun Zhao, Jinsong Zhao, Qinshan Yang
  • Patent number: 10775525
    Abstract: Techniques for estimating and visually presenting formation slowness are disclosed herein. The techniques include receiving acoustic signal responses from adjacent formations at a plurality of depths in a borehole environment, mapping a distribution of the acoustic signal responses at each depth according to slowness and a frequency values, determining at least one confidence interval to define a coherence threshold for the distribution of the acoustic signal responses at each depth, generating a variable density log for each depth based on the distribution of acoustic signals responses that satisfy the confidence interval for one or more frequency ranges, determining a formation slowness value for each depth based on the variable density log for the each depth, and presenting a semblance map that includes a slowness axis, a depth axis, the formation slowness value for each depth, and at least a portion of the distribution of acoustic signal responses at each depth.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: September 15, 2020
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Ruijia Wang, Chung Chang, John Philip Granville, Gary Wayne Kainer
  • Patent number: 10760410
    Abstract: Various apparatus or methods are arranged to operate a tool in a wellbore, where the tool has a number of acoustic sensors. Scanning images obtained by the tool sensors along the borehole can be combined to increase the contrast of leak location with respect to background noise. A sequence of beamformed images, generated from signals captured by the tool as it moves over a range of depths of the wellbore, can be acquired. Each beamformed image may overlap at least one other beamformed image of the sequence. The beamformed images can be processed and the processed beamformed images can be combined, forming a stitched image. Additional apparatus, systems, and methods operable in providing stitched images can operate in a variety of applications.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: September 1, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Nam Nguyen, Yi Yang Ang, Yinghui Lu, Avinash Vinayak Taware, Paris Smaragdis, David Alan Welsh, Nugroho Perhatianto
  • Patent number: 10571584
    Abstract: Systems and methods for estimating orthorhombic anisotropy parameters of subsurface rock layers are provided. An initial three-dimensional (3D) model of layers in a subsurface formation is generated. Particular combinations of seismic source and receiver locations associated with a vertical seismic profile (VSP) survey of the formation are selected based on a simulation of seismic wave propagation through each layer of the initial 3D model. A global inversion is performed using data points selected from travel time data associated with the VSP survey in order to estimate different sets of anisotropy parameters for the layers of the initial 3D model, where the selected data points correspond to the selected source-receiver combinations. The initial 3D model is refined with an optimal set of anisotropy parameters selected from the estimated parameter sets. The refined 3D model is provided for seismic analysis and well planning operations to be performed for the subsurface formation.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: February 25, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Amit Padhi
  • Patent number: 10436921
    Abstract: A method can include providing compressional and shear-wave slowness data for a homogeneous, anisotropic formation at deviated borehole angles greater than 40 degrees and less than 90 degrees as defined by a vertical transverse isotropy (VTI) symmetry axis; providing a relationship for normal and tangential compliances (e.g., BN and BT); and, based on the data and the relationship, outputting a model for calculating anisotropy parameter values (e.g., ?0, ?, .?) that characterize the homogeneous, anisotropic formation (e.g., along a borehole angle of 90 degrees). Various other apparatuses, systems, methods, etc., are also disclosed.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: October 8, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Steve Allan Horne, John Walsh
  • Patent number: 10425261
    Abstract: Certain embodiments disclosed herein include a circuit for generating modulated backscattered sensory data. The circuit includes a sensor configured to produce sensory data in a format of a bitstream; a waveformer configured to generate a waveform signal (m(t)) compliant with a wireless protocol; a backscatter mixer configured to modulate each bit in the bitstream using the waveform signal; and a wakeup trigger configured to trigger the backscatter mixer in response to a reception of a packet from a first wireless device, wherein the modulated backscattered bitstream is being transmitted to a second wireless device.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: September 24, 2019
    Assignee: Wiliot, LTD.
    Inventors: Dotan Ziv, Yuval Domb
  • Patent number: 10422212
    Abstract: A method can include receiving an estimated spatial location of a three-component receiver in a borehole; receiving a plurality of spatial locations of sources of seismic energy; receiving incident angles for the three-component receiver at the estimated spatial location for the plurality of spatial locations of the sources of seismic energy; computing orientations for the three-component receiver based at least in part on the incident angles; minimizing an error function for the orientations; and, based at least in part on the minimizing, determining one or more deviation survey parameter values that specify at least a portion of a trajectory for the borehole.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: September 24, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ali Yawar Sayed, Joel Herve Le Calvez
  • Patent number: 10344582
    Abstract: A downhole installation includes a first pipe layer, a second pipe layer about the first pipe layer, an annulus between the first and second pipe layers, and a geological formation outside of the second pipe layer. A method for evaluating the downhole installation includes: exciting a flexural wave in the first pipe layer using an angled acoustic transmitter; receiving third interface echo data using a plurality of angled acoustic receivers at different locations along the longitudinal extent of the pipe layers; generating acoustic resonance across the thickness of the first and second pipe layers by use of full waveform excitation; receiving the acoustic response wave field generated by the full waveform; identifying a suitable component of the acoustic response wave field; determining if the material outside the second pipe layer is fluid or solid; and analyzing the third interface echo data to thereby evaluate material conditions in the annulus.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 9, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventor: Ioan-Alexandru Merciu
  • Patent number: 10274628
    Abstract: A distributed acoustic sensing cable including an optical fiber waveguide configured to provide light signal transmission and an acoustic device coupled to the optical fiber waveguide and configured to provide acoustic signal transmission. The acoustic device includes a polymer composite having reinforced fibers embedded therein. The polymer composite having acoustic waveguides for attenuating undesirable acoustic waves propagating along the distributed acoustic sensing cable and optical fibers embedded within the polymer composite that extend along an axial length of the acoustic device that facilitate the light signal transmission.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: April 30, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Hua Xia, Avinash Vinayak Taware, David Andrew Barfoot
  • Patent number: 10156653
    Abstract: A method of determining properties of a wellbore in a formation includes obtaining from the acoustic logging tool, acoustic data comprising an acoustic wave reflected from the casing, the annular fill material, one or more interfaces between any of the mud, the casing, and the annular fill material, or combinations thereof. The method includes normalizing the acoustic wave in a frequency domain, resulting in a specular spectrum and removing spectral noise outside a region of interest in the specular spectrum. The method includes shaping the specular spectrum around a resonance frequency, converting the shaped specular spectrum into a time domain, resulting in a renormalized waveform, and subtracting from the renormalized waveform one or more of a specular noise, second interface echoes, resulting in a third interface echo signal.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: December 18, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Mikhail Lemarenko, Christoph Klieber, Thilo Michael Brill
  • Patent number: 9915749
    Abstract: A logging sensor or tool including a structural component, a non-structural component, and a composite disposed between the structural component and the non-structural component. The composite may contain a metallic foam having pores and an elastomeric material deposited in the pores. The elastomeric material may include an elastomer and a plurality of metallic shield particles. A logging system and to a wireline system containing such a logging sensor or tool.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: March 13, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Richard Teng Thuan Khoo, Adan Hernandez Herrera
  • Patent number: 9869789
    Abstract: The present disclosure includes a method for monitoring a subsurface formation including disposing an antenna in a horizontal wellbore, the antenna including a plurality of piezoelectric modules. A voltage signal is applied to at least one of the piezoelectric modules to cause the at least one piezoelectric modules to emit seismic energy into the subsurface formation. A resulting signal is received at a receiver. A property of the subsurface formation is determined based, at least in part, on the resulting signal.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: January 16, 2018
    Assignee: CGG SERVICES SAS
    Inventors: Julien Cotton, François-Xavier Grésillon
  • Patent number: 9714566
    Abstract: Systems, methods, and computer-readable storage devices for determining a location of an acoustic source outside of a borehole. The method relates to indicating a radial distance to the borehole, an offset along the borehole, and an azimuthal position around the borehole, of the acoustic source. The method includes receiving acoustic signals from respective acoustic sensors spaced along a tool lowered within the borehole. Using the acoustic signals and a borehole model, stacked energies are calculated for different radial distances from the borehole. At least one of the stacked energies is translated to an indication of a radial distance of the acoustic source from the borehole. The stacked energy for a radial distance is computed by offsetting the acoustic data signals in time in accordance the borehole model, summing the offset acoustic data signals to produce a stacked signal, and evaluating energy of the stacked signal over a time window.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: July 25, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Batakrishna Mandal
  • Patent number: 9678236
    Abstract: Apparatus, systems, and methods may operate to receive radiated energy as scattered energy after the radiated energy interacts with a geologic formation, wherein the scattered energy is received at a sub-surface multi-channel sensor array that operates to transform the scattered energy into received signals, and wherein the radiated energy is provided by a sub-surface source of elastic energy; and to identify discontinuous features in the geologic formation by interferometric comparison of the received signals as elastic signals and/or electromagnetic signals among some sensors in the sensor array, or by time-reversal propagation of the received signals as elastic and/or electromagnetic signals in a numeric model of a volume of the geologic formation. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: June 13, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Paul F. Rodney, Stewart Arthur Levin
  • Patent number: 9664034
    Abstract: In some embodiments, apparatus and systems, as well as method and articles, may operate to launch acoustic waves along a first acoustic path length from an acoustic transducer toward an axis of rotation, to impinge on a first front surface of a target substantially fixed with respect to the axis, and to receive a reflection of the acoustic waves from the first front surface at the acoustic transducer. After rotating the acoustic transducer about the axis along a substantially circular path, additional activities may include launching acoustic waves along a second acoustic path length, different from the first acoustic path length, from the acoustic transducer toward the axis to impinge on a second front surface of the target, and receiving a reflection of the acoustic waves from the second front surface at the acoustic transducer. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 30, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Batakrishna Mandal
  • Patent number: 9563963
    Abstract: A method of detecting an edge of a geological characteristic in a borehole comprises, in respect of an image log of a length of a borehole, carrying out the steps of a gradient-based edge detection method, a phase congruence-based edge detection method or a combination of such methods as preliminary, pre-processing stages. Subsequent steps of the method may include operating a relatively computationally simple process to identify sinusoids among detected edge features; and a relatively computationally complex process for parameterizing the thus-identified sinusoids.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: February 7, 2017
    Assignee: Reeves Wireline Technologies Limited
    Inventors: Peter Adrian Spencer Elkington, Said Assous
  • Patent number: 9546548
    Abstract: A distributed acoustic wave detection system and method is provided. The system may include a fiber optic cable deployed in a well and configured to react to pressure changes resulting from a propagating acoustic wave and an optical source configured to launch interrogating pulses into the fiber optic cable. In addition, the system may include a receiver configured to detect coherent Rayleigh noise produced in response to the interrogating pulses. The CRN signal may be used to track the propagation of the acoustic waves in the well. Such capability allows the location of the cement sheath, as well as measuring the bonding of cement to at least a casing string at least partially surrounded by a cement sheath.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: January 17, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Arthur H. Hartog, William B. Underhill, Simon Severance, Samantha Rist
  • Patent number: 9529105
    Abstract: Acoustic logging systems and methods are provided with multi-mode inversion for at least vertical shear slowness and shear anisotropy. At least some method embodiments acquire waveforms for multiple acoustic wave modes as a function of tool position in a borehole, derive position-dependent mode dispersion curves from the waveforms, match the derived dispersion curves with parameterized dispersion curves to determine a vertical shear slowness and a shear anisotropy as a function of position, and displaying a borehole log that represents at least one of the vertical shear slowness and the shear anisotropy as a function of position. The objective function employed for the inversion is evaluated across multiple wave propagation modes and mud slownesses and may employ an adaptive, frequency-dependent weighting based on distance between the derived dispersion curves and the parameterized dispersion curves.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: December 27, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Mark Vincent Collins, Arthur Cheng
  • Patent number: 9494033
    Abstract: A method and apparatus for detecting a kick in a wellbore using acoustic transducers. In one embodiment, a system for detecting a kick in a wellbore includes a drill string having a plurality of sections of drill pipes and a plurality of kick detection subs disposed between the sections of drill pipes. Each of the kick detection subs includes an acoustic transducer and kick detection circuitry coupled to the acoustic transducer. The kick detection circuitry is configured to detect gas bubbles in the wellbore based on acoustic signals received by the acoustic transducer. The kick detection circuitry is also configured to determine whether a kick is present in the wellbore based on the detected gas bubbles. The kick detection circuitry is further configured to transmit information indicating whether a kick is present to the surface.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: November 15, 2016
    Assignee: INTELLISERV, LLC
    Inventors: Reza Taherian, Fernando Garcia-Osuna
  • Patent number: 9328606
    Abstract: A method of logging a perforation tunnel and associated features of the perforation tunnel can include the following features. A logging device including an ultrasonic transducer is located downhole into a well. The well has a casing. The ultrasonic transducer has a focal point that is a distance from the ultrasonic transducer so as to be behind the inner face of the casing. An ultrasonic signal is projected from the ultrasonic transducer. A reflection of the ultrasonic signal is reflected from an internal portion of the perforation tunnel, the perforation tunnel extending through the casing and into formation. A transit time is measured between transmission and reception of the ultrasonic signal. A position of the ultrasonic transducer corresponding to the ultrasonic transmission and reception of the reflected signal is determined.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: May 3, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Ralph M. D'Angelo, Harvey Williams
  • Patent number: 9273545
    Abstract: A method of determining properties of a bonding material disposed outside of a casing in a borehole includes at least two of the following three pairs of operations: (1) inducing an acoustic wave in the casing, and measuring attenuation of the acoustic wave, by pulse-echo or other cement bond logging measurement; (2) inducing an SH wave in the casing, and measuring attenuation of the SH wave; and (3) inducing a Lamb wave in the casing, and measuring attenuation of the Lamb wave. (2) and/or (3) may be performed by an electromagnetic acoustic transducer. The method further includes determining the shear velocity or shear impedance and the compressional velocity or compressional impedance of the bonding material based on appropriate ones of the measurements. The bonding material may be cement.
    Type: Grant
    Filed: December 23, 2012
    Date of Patent: March 1, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Alexei Bolshakov, Douglas Patterson, Edward Domangue
  • Patent number: 9274240
    Abstract: A cement bond logging method for wells containing heavy mud and cement is provided. Acoustic logging tool data from a well having material in the annular space between the casing and the formation is analyzed to map relationships between waveform amplitude, acoustic impedance, and impedance derivative of the material. Map zones representing fully bonded well regions and partially bonded well regions are identified. An image is generated from the log data corresponding to the identified map zones. A cement bond logging system including a memory having cement bond logging software and a processor coupled to the memory to execute the software is also provided.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: March 1, 2016
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Gary J. Frisch
  • Patent number: 9158021
    Abstract: A method for determining a volume of a fracture network includes detecting seismic signals deployed over an area of the subsurface during pumping of fracturing fluid into at least one wellbore drilled through the area. A hypocenter of each fracture induced by the pumping is determined using the seismic signals. A facture network and associated fracture volume is determined using the determined hypocenters and seismic moments determined from the detected seismic signals. A maximum value of a scaling factor is determined based on a subset of the hypocenters having a highest cumulative seismic moments. The scaling factor is determined by relating a pumped volume of the fracturing fluid with respect to the determined fracture volume. Dimensions of each fracture are scaled using the maximum value of the scaling factor. The fracture volumes are recalculated using the scaled dimensions.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: October 13, 2015
    Assignee: Microseismic, Inc.
    Inventor: Jonathan P. McKenna
  • Patent number: 9157312
    Abstract: Casing signals generated by an EMAT in a borehole are processed using at least two orthogonal band-limited filters. The band-limited filters may include Gaussian or Cauchy Wavelet filters. By using the Hilbert transform, an envelope of the filtered signals is determined and amplitudes and arrival times of individual arrivals are estimated. These can be used to estimate casing and cement properties.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: October 13, 2015
    Assignee: BAKER HUGHES INCORPORATED
    Inventor: Jinsong Zhao
  • Patent number: 9103196
    Abstract: The present disclosure is related to apparatuses and methods for estimating borehole parameters using a plurality of reflections caused by a plurality of acoustic pulses. The reflections may overlap each other and/or the acoustic pulses. The methods may include estimating an envelope of the received acoustic signal at the at least one element of the array of transducers; and estimating at least one arrival time of at least one of the plurality of overlapping events from the envelope of the received acoustic signals, the arrival times being characteristic of the geometry of the borehole. The method may also include imaging the borehole wall. The apparatus may include an array of transducers on a rotatable transducer assembly with at least one element on the array configured to generate a plurality of acoustic pulses and receive reflections and a processor configured to perform the method.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: August 11, 2015
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Jinsong Zhao, James V. Leggett, III
  • Patent number: 9086348
    Abstract: A method, system and apparatus for testing properties of a rock formation surrounding a wellbore in situ. The apparatus includes a tool body, one or more indenters, and one or more acoustic sensors. The body includes an outer surface that defines one or more cavities therein. Each cavity extends into the body. Each indenter is positioned within a corresponding cavity and is positionable into an operating position and a non-operating position. The acoustic sensor is positioned within the cavity and adjacent to the indenter. The indenter is positioned at least partially beyond the outer surface when in the operating position. The acoustic sensor senses one or more acoustic events occurring when the indenter is in the operating position. The apparatus is inserted into the wellbore. Once inserted, the indenter applies a load onto the rock formation causing cracking and the sensor receives the generated acoustic transmissions. The transmissions are analyzed.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: July 21, 2015
    Assignee: VAREL EUROPE S.A.S.
    Inventors: Gary M. Thigpen, Federico Bellin, Alfazazi Dourfaye, William W. King
  • Patent number: 9036449
    Abstract: Methods and systems for acoustically determining reservoir parameters of subterranean formations. A tool comprising at least one seismic source or seismic receiver mounted thereon; a conveyance configured for movement of the acoustic tool in a borehole traversing the subterranean formations; and a source retainer configured or designed for permanent deployment in the borehole to removably retain the acoustic tool in the borehole. The source retainer when deployed provides acoustic coupling with the borehole and removably retains the acoustic tool in the borehole so that, over multiple deployments, the acoustic tool is repeatedly deployed at the same predetermined location and orientation relative to the subterranean formation, and with the same acoustic coupling to the borehole.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: May 19, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Masahiro Kamata, Tsunehisa Kimura
  • Patent number: 9013955
    Abstract: Signals from an acoustic transducer used in a borehole include overlapping, ringing reflections from the casing walls, voids in the cement and the formation. By using the Hilbert transform, an envelope of the signals is determined and individual echoes are detected by using a Gauss-Laplace operator.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: April 21, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Jinsong Zhao
  • Patent number: 8964504
    Abstract: A method of evaluating a cased borehole in an earth formation includes: emitting at least one acoustic signal into the borehole via an acoustic source and detecting a return acoustic signal via an acoustic sensor, the borehole including a casing and a casing support material disposed between the casing and a borehole wall; emitting a neutron flux via a neutron source into the borehole and detecting a radiation signal via a radiation detector, the radiation signal including induced gamma radiation resulting from neutron interactions; and identifying a casing support material characteristic based on the return acoustic signal and the radiation signal.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: February 24, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: David M. Chace, Rafay Z. Ansari, Elton Frost, Jr.
  • Patent number: 8964503
    Abstract: Formation evaluation measurements are used to estimate formation lithology. The estimated lithology is used to provide an estimate of acoustic wave slowness. The estimated acoustic wave slowness is used to provide processing parameters for acoustic data that are less sensitive to noise.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: February 24, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Michael J. Manning, Luis Jordan Andonof, Terrence H. Quinn
  • Publication number: 20150049585
    Abstract: Acoustic logging systems and methods are provided with multi-mode inversion for at least vertical shear slowness and shear anisotropy. At least some method embodiments acquire waveforms for multiple acoustic wave modes as a function of tool position in a borehole, derive position-dependent mode dispersion curves from the waveforms, match the derived dispersion curves with parameterized dispersion curves to determine a vertical shear slowness and a shear anisotropy as a function of position, and displaying a borehole log that represents at least one of the vertical shear slowness and the shear anisotropy as a function of position. The objective function employed for the inversion is evaluated across multiple wave propagation modes and mud slownesses and may employ an adaptive, frequency-dependent weighting based on distance between the derived dispersion curves and the parameterized dispersion curves.
    Type: Application
    Filed: April 2, 2012
    Publication date: February 19, 2015
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Mark Vincent Collins, Arthur Cheng
  • Publication number: 20150029823
    Abstract: Systems and methods for identifying sanding in production wells using time-lapse sonic data. Formation anisotropy can be characterized in terms of shear moduli in a vertical wellbore, e.g., vertical shear moduli C44 and C55 in the wellbore axial planes and horizontal shear modulus C66 in the wellbore cross-sectional plane. Changes in formation anisotropy between different times can provide qualitative indicators of the occurrence of sanding in the production well. Before production begins, the horizontal shear modulus C66 is typically less than the vertical shear modulus C44 or C55 or both. At a subsequent time after sanding occurs, the horizontal shear modulus C66 is typically greater than the vertical shear modulus C44 or C55 or both. By comparing the shear moduli of the vertical wellbore at different times, it is possible to identify the occurrence of sanding in the production well using time-lapse sonic data.
    Type: Application
    Filed: July 23, 2013
    Publication date: January 29, 2015
    Applicant: Schlumberger Technology Corporation
    Inventors: Jiaqi Yang, Bikash K. Sinha, Ting Lei
  • Patent number: 8928488
    Abstract: In some embodiments, an apparatus and a system, as well as a method and an article, may operate to monitor a first condition associated with transmitting or receiving a signal in a formation or on a drill string, or both, over a first selected interval of a drill string located down hole; to monitor a second condition associated with transmitting or receiving the signal in the formation or on the drill string or both, over a second selected interval of the drill string; to compare the first condition to the second condition to provide a comparison result; and based on the comparison result, to select one of the first selected interval or the second selected interval to transmit or receive the signal in the formation or on the drill string, or both. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: January 6, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Paul F. Rodney, Clive D. Menezes
  • Patent number: 8913461
    Abstract: Measurements made by a transducer assembly for downhole imaging are affected by reverberations between the transducer and the window on the outside of the assembly. The reverberations result in a stationary noise on the image. Hardware solutions to improve signal-to-noise ratio includes using a composite transducer, adjusting the distance between the transducer and the window. SNR can also be improved by processing techniques that include stacking, fitting a sinusoid to the reverberation, by envelope peak detection, and by applying a notch filter.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: December 16, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Roger R. Steinsiek, Jason M. Harris, Jinsong Zhao, Douglas J. Patterson, James B. Domnanish
  • Patent number: 8902704
    Abstract: In a method for logging the location of a fluid depth in a wellbore, an acoustic event is allowed to take place in a specific manner at the ground surface. This acoustic event generates pressure waves. The pressure waves travel in the wellbore downward. The pressure waves traveling in the wellbore are reflected at least also at the fluid depth. At the ground surface, the pressure waves traveling there out of the wellbore are picked up and the time of travel since the acoustic event is measured. The picked-up and measured pressure waves are analyzed and, together with the associated time of travel, the location of the fluid depth is deduced. The acoustic event generates a signal pattern having a predetermined, time-variable frequency spectrum. The signal pattern is emitted as vibration event into the wellbore, travels downward, and is reflected. At the ground surface, the picked-up signals originating from the wellbore are analyzed.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: December 2, 2014
    Assignee: Rohol-Aufsuchungs AG
    Inventors: Rainer Zamow, Kurt Sonnleitner
  • Publication number: 20140347957
    Abstract: A method of detecting seismic waves traveling through a subsurface formation includes lowering a cable into a borehole in the subsurface formation, the cable having at least one optical fiber associated therewith, and causing descent of a remote end of the cable to be arrested. The method further includes feeding a further length of the cable into the borehole such that the cable is slack and in contact with at least part of a wall of the borehole, and using an interrogator coupled to the at least one optical fiber to detect seismic waves traveling through the subsurface formation and into the cable.
    Type: Application
    Filed: May 22, 2013
    Publication date: November 27, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Arthur H. Hartog, Bernard Frignet, Duncan Mackie, Michael Clark
  • Publication number: 20140321240
    Abstract: A method for examining integrity of cement in a wellbore includes deploying an ultrasound transducer within a wellbore. One or more reference ultrasound images of the cement within the wellbore are acquired. A pushing pulse is emitted from the ultrasound transducer to elicit a displacement of the cement within the wellbore. A sequence of ultrasound images is acquired, over time, depicting the displacement of the cement within the wellbore elicited by the pushing pulse. A strain tensor map is generated from a difference between the one or more reference ultrasound images and the acquired sequence of ultrasound images. A degree of integrity of the cement within the wellbore is determined based on the generated strain tensor map.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 30, 2014
    Applicants: SIEMENS MEDICAL SOLUTIONS USA, INC., SIEMENS CORPORATION
    Inventors: Stephen R. Barnes, Thomas O'Donnell
  • Publication number: 20140301164
    Abstract: In some embodiments, apparatus and systems, as well as method and articles, may operate to launch acoustic waves along a first acoustic path length from an acoustic transducer toward an axis of rotation, to impinge on a first front surface of a target substantially fixed with respect to the axis, and to receive a reflection of the acoustic waves from the first front surface at the acoustic transducer. After rotating the acoustic transducer about the axis along a substantially circular path, additional activities may include launching acoustic waves along a second acoustic path length, different from the first acoustic path length, from the acoustic transducer toward the axis to impinge on a second front surface of the target, and receiving a reflection of the acoustic waves from the second front surface at the acoustic transducer. Additional apparatus, systems, and methods are disclosed.
    Type: Application
    Filed: November 30, 2011
    Publication date: October 9, 2014
    Applicant: Halliburton Energy Services, Inc.
    Inventor: Batakrishna Mandal
  • Patent number: 8848485
    Abstract: Methods and apparatus for performing sonic well logging within a wellbore based on optical Distributed Acoustic Sensing (DAS) are provided. A sonic well logging system based on DAS may be capable of producing the functional equivalent of tens, hundreds, or even thousands of acoustic sensors. In this manner, the emplacement of the sonic well logging system based on DAS may not be nearly as complex or expensive as emplacing a sonic well logging system based on traditional methods. Furthermore, multiplexing may be simpler, downhole electronics need not be used, and the sonic well logging system may be used in extreme, high temperature environments.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: September 30, 2014
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Francis X. Bostick, III
  • Publication number: 20140269165
    Abstract: An acoustic logging tool emits a wideband acoustic pulse toward an inside surface of a borehole casing and an acoustic response is received. The acoustic response is analyzed at one or more higher order harmonics of the thickness mode resonance of the casing to determine the acoustic impedance of the material behind the casing.
    Type: Application
    Filed: May 27, 2014
    Publication date: September 18, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Benoit Froelich, Andrew J. Hayman, Kenneth K Liang
  • Patent number: 8830787
    Abstract: Disclosed is a method for estimating a property of an earth formation penetrated by a borehole. The method includes: transmitting acoustic waves into the formation from an acoustic source disposed in the borehole and away from a wall of the borehole; generating radial acoustic eigenwaves within a space between the wall of the borehole and the acoustic source using the transmitted acoustic waves; receiving an acoustic signal with an acoustic receiver disposed at the wall of the borehole; sensing an electric field signal with an electric field sensor disposed at the wall of the borehole; and estimating the property using the received acoustic signal and the sensed electric field signal.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: September 9, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Vitaly N. Dorovsky, Alexander I. Fedorov