Of Noncompressional Acoustic Wave Energy Patents (Class 367/31)
  • Patent number: 11360230
    Abstract: A method is described for seismic inversion including receiving a processed seismic image and an enhanced seismic image representative of a subsurface volume of interest; forward modeling the processed seismic image and the enhanced seismic image to generate a first modeled dataset and a second modeled dataset; differencing the first modeled dataset and the second modeled dataset to create a residual dataset; filtering the first modeled dataset to generate an approximation of illumination; preconditioning the residual dataset with the approximation of illumination to generate an adjoint source; back projecting the adjoint source to determine a model update; and applying the model update to an earth model of the subsurface volume of interest.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: June 14, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Siwei Li, Guojian Shan, Yue Wang
  • Patent number: 11353616
    Abstract: Acoustic waves are obtained from an acoustic logging tool within a borehole passing through a formation. Signal properties in a time domain, frequency domain, or both are determined based on the obtained acoustic waves. A machine learning analysis is used to determine formation slowness based on the determined signal properties and a downhole operational parameter is adjusted based on the determined formation slowness.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: June 7, 2022
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Ruijia Wang, Richard Timothy Coates, Kristoffer Thomas Walker
  • Patent number: 11313219
    Abstract: A method and system for measuring a compressional and a shear slowness. The method may comprise disposing a downhole tool into a wellbore. The downhole tool may comprise a transmitter, wherein the transmitter is a monopole, and a receiver, wherein the receiver is a monopole receiver. The method may further comprise broadcasting the sonic waveform into the formation penetrated by the wellbore, recording a reflected wave on one or more receivers, wherein the reflected wave is a compressional wave or a shear wave, processing the reflected wave into at least one measurement, and applying a validation scheme to the at least one measurement. The system may be a downhole tool comprising a transmitter configured to transmit a sonic waveform into a formation, wherein the transmitter is a monopole, and a receiver configured to record a reflected wave, wherein the receiver is a monopole receiver.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: April 26, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Kristoffer Thomas Walker
  • Patent number: 11293904
    Abstract: An acoustic receiver and method for acoustic logging. The acoustic receiver comprises a housing and a sensor subassembly, which is located within the housing. The sensor subassembly comprises a mount and a cylindrical piezoelectric crystal coupled to the mount. The sensor subassembly also comprises an isolation ring positioned between one of the ends of the cylindrical piezoelectric crystal and the mount. The isolation ring directly engages the crystal and the mount. The method of acoustic logging comprises receiving an acoustic signal using an acoustic receiver, which comprises a cylindrical piezoelectric crystal coupled to a mount without an adhesive material. The method also comprises converting the acoustic signal into an electrical signal by the cylindrical piezoelectric crystal and transmitting the electrical signal to a processor via a conductor coupled to the cylindrical piezoelectric crystal.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: April 5, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Minh Dang Nguyen, Chung Chang, Clinton Keith Bates
  • Patent number: 11269097
    Abstract: A method for computing amplitude independent gradient for seismic velocity inversion in a frequency domain includes receiving seismic data associated with a region. The region comprises one or more earth subsurface layers represented by a plurality of points, and each point is associated with a seismic velocity. Seismic velocities at the plurality of points are determined by iteratively updating the seismic velocities based on a plurality of gradient values, where each gradient value corresponds to a point and is determined by evaluating a gradient of an objective function at a location of the point. A seismic image of the one or more earth subsurface layers is displayed based on the determined seismic velocities.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: March 8, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Yan Wu, Yue Ma, Lei Cao, Hongwei Liu, Yi Luo
  • Patent number: 11205410
    Abstract: The anisotropic media has an anisotropic layer, is disposed between outer isotropic media, causes multiple mode transmission on an elastic wave having a predetermined mode incident into the anisotropic media, and has a mode-coupling stiffness constant not zero. A thickness of the anisotropic layer according to modulus of elasticity and excitation frequency satisfies Equation (2) which is a phase matching condition of elastic waves propagating along the same direction or Equation (3) which is a phase matching condition of elastic waves propagating along the opposite direction, to generate mode conversion Fabry-Pérot resonance, ???kqld?kqsd=(2n+1)?, ??Equation (2) ???kqld+kqsd=(2m+1)?, ??Equation (3) kql is wave numbers of anisotropic media with quasi-longitudinal mode. lqs is wave numbers of anisotropic media with quasi-shear mode. d is a thickness of anisotropic media. n and m are integers.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: December 21, 2021
    Inventors: Yoon-young Kim, Xiongwei Yang, Min-woo Kweun, Hyung-jin Lee
  • Patent number: 11143776
    Abstract: A computer-implemented method and system implementing the method, are disclosed for computing small cave recognition models, using seismic reflection data. User inputs and earth-model data are obtained over points of incidence of a survey region, at various angles of incidence. Various models are then computed that serve for cave identification and take part in preliminary seismic exploration and reservoir characterization. Therefore, the attributes developed by the computer-implemented method and system serve as indicators of low velocity and density cave recognition which are capable of separating the cave events from the normal layer events; identifying caves with size larger than half to one wavelength of the dominant signal; and identifying cave diffractions from caves that contain a local maximal/minimal at around nine degrees in amplitude versus angle models.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: October 12, 2021
    Assignees: China Petroleum & Chemical Corporation, Sinopec Tech Houston
    Inventors: Min Zhou, Franklin Ruiz
  • Patent number: 11143773
    Abstract: Systems and methods include a computer-implemented method for presenting interpretation results of synchronized seismic data and fracture treatment times. A standard format seismic dataset of sensor readings obtained from a three-component sensor is generated. Coordinates and recording times corresponding to the sensor readings are added to the standard format seismic dataset. Synchronized seismic data is generated from the standard format seismic dataset by synchronizing seismic recording times with fracture treatment times. Quality-controlled synchronized seismic data is generated by removing dead traces and abnormal data samples from the synchronized seismic data. A time-frequency analysis is performed on the quality-controlled synchronized seismic data, including performing short-time Fourier transforms to analyze variations of Fourier spectra over time. Based on the time-frequency analysis, resonance frequencies are extracted from each frequency spectrum at different time samples.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: October 12, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Yujin Liu, Yue Du, Tong Wang Fei, Yi Luo
  • Patent number: 10712461
    Abstract: The present disclosure provides a prestack separating method for a seismic wave, including: receiving P-wave, S1-wave and S2-wave of the seismic wave, wherein the P-wave, S1-wave and S2-wave are reflected from different points; projecting the P-wave, S1-wave and S2-wave into a Z-R-T coordinate system, so as to generate a projection matrix, wherein Z is a vertical component, R is a component of a source-to-receiver azimuth and T is a component orthogonal to the R component; forming vectors of the P-wave, S1-wave and S2-wave as a composite vector; transforming the composite vector to an anisotropic wave vector matrix according to base vectors on the vector directions of the P-wave, S1-wave and S2-wave; and performing a rotation transformation of an affine coordinate system on the anisotropic wave vector matrix to generate a wave separation matrix, thereby solving a problem of error prediction result of fracture parameters caused by the “mode leakage” phenomenon.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: July 14, 2020
    Assignee: CHINA UNIVERSITY OF GEOSCIENCES (BEIJING)
    Inventors: Jun Lu, Yun Wang
  • Patent number: 10670761
    Abstract: A method and system for producing a Quasi-Static Stoneley Slowness log. The method for producing a Quasi-Static Stoneley Slowness log may comprise recording a pressure wave at a receiver; determining a slowness-frequency range with an information handling system from the pressure wave, processing a frequency-domain semblance, extracting a Stoneley Dispersion, minimizing a misfit between theoretical and the Stoneley Dispersion, and identifying Quasi-Static Stoneley slowness from the Stoneley Dispersion. The well measurement system for producing an Quasi-Static Stoneley Slowness log and shear slowness anisotropy may comprise a downhole tool, a vehicle, and an information handling system.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: June 2, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ruijia Wang, Chung Chang, Baichun Sun
  • Patent number: 10663435
    Abstract: An acoustic receiver and method for acoustic logging. The acoustic receiver comprises a housing and a sensor subassembly, which is located within the housing. The sensor subassembly comprises a mount and a cylindrical piezoelectric crystal coupled to the mount. The sensor subassembly also comprises an isolation ring positioned between one of the ends of the cylindrical piezoelectric crystal and the mount. The isolation ring directly engages the crystal and the mount. The method of acoustic logging comprises receiving an acoustic signal using an acoustic receiver, which comprises a cylindrical piezoelectric crystal coupled to a mount without an adhesive material. The method also comprises converting the acoustic signal into an electrical signal by the cylindrical piezoelectric crystal and transmitting the electrical signal to a processor via a conductor coupled to the cylindrical piezoelectric crystal.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: May 26, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Minh Dang Nguyen, Chung Chang, Clinton Keith Bates
  • Patent number: 10656297
    Abstract: A system for self-tuning sonic transmitters which transmits a plurality of frequencies into a downhole formation, then identifies which of the transmitted frequencies generates the best response from the formation. The system then uses the best frequency identified for subsequent logging of formation data until a subsequent tuning sequence is initiated.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 19, 2020
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Paul Andrew Cooper
  • Patent number: 10656295
    Abstract: A method for generating one or more subsurface stress models. The method may include receiving seismic data. A plurality of first geomechanical property models may be generated based at least partially on the seismic data. A second geomechanical property model may be generated based at least partially on the seismic data. The second geomechanical property model may have a lower resolution than the first geomechanical property models. A stress model, a strain model, or a combination thereof may be generated based on the second geomechanical property model. One or more subsurface stress models may be generated based on the stress model, the strain model, or the combination thereof and the first geomechanical property models.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: May 19, 2020
    Assignee: Schlumberger Technology Corporation
    Inventors: Adrian Rodriguez-Herrera, Xavier Garcia-Teijeiro, Jorg V. Herwanger, Nikolaos Constantinos Koutsabeloulis, Tone Trudeng, Jalal Khazanehdari
  • Patent number: 10616008
    Abstract: Systems and methods for performing focused blind deconvolution of signals received by a plurality of sensors are disclosed. In some embodiments, this may include determining a cross-correlation of first and second signals, obtaining a cross-correlation of a first response function and a second response function based on the cross-correlation of the first and second signals and subject to a first constraint that the first and second response functions are maximally white, and obtaining the first and second response functions based on the cross-correlation of the first and second response functions and subject to a second constraint that the first and second response functions are maximally front-loaded.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: April 7, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: Pawan Bharadwaj Pisupati, Laurent Demanet, Aime Fournier
  • Patent number: 10571585
    Abstract: A method is described for time-lapse seismic imaging that may include detecting moiré patterns in seismic images generated from time-lapse seismic data and identifying geologic features based on the moiré patterns. The method may be executed by a computer system.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: February 25, 2020
    Assignee: Chevron U.S.A. Inc.
    Inventors: Laura L. Bandura, Lisa R. Goggin, Adam D. Halpert, Ke Wang
  • Patent number: 10488538
    Abstract: Apparatus and techniques described herein include receiving information indicative of a first cylindrical shell representing a portion of an acoustic logging tool, receiving information indicative of a second cylindrical shell concentrically surrounding the first cylindrical shell, the second cylindrical shell representing a second portion of the acoustic logging tool, and the second cylindrical shell comprising a fluid metal model including a non-zero density, a non-zero compressional wave propagation velocity, and a shear wave propagation velocity of zero or about zero. Information is determined indicative of an acoustic dispersion comprising a slowness (or other information indicative of a propagation velocity) of a wave propagating along the acoustic logging tool using a model including the first and second cylindrical shells.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: November 26, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Chen Li, Chung Chang
  • Patent number: 10365389
    Abstract: In accordance with embodiments of the present disclosure, systems and methods for taking acoustic/ultrasonic wave measurements of a wellbore using a downhole tool equipped with microelectromechanical (MEM) transducers are provided. The MEM transducers may include a plurality of MEM transmitters (e.g., MEM speakers) and a plurality of separate MEM receivers (e.g., MEM microphones). These MEM transducers may be disposed in arrays proximate an outer surface of the downhole tool to collect acoustic/ultrasonic wave measurements of the full circumference of a wellbore. Due to their small size, large numbers of MEM transducers may be distributed radially around the downhole tool. Such an arrangement of sensors may enable the downhole tool to perform measurements of the entire wellbore without the downhole tool needing to be rotated, leading to an increased signal-to-noise ratio of the measurements.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: July 30, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Tatiana Gilstrap, Yinghui Lu, John P. Granville, Yibing Zheng, David Alan Welsh
  • Patent number: 10359531
    Abstract: A technique facilitates monitoring of acoustic signals to measure a velocity vector of a borehole. Acoustic sensors are arranged in a desired acoustic sensor array and positioned along a body of a tool, e.g. a sonic logging tool. The acoustic sensor array is then positioned in fluid along a wall of a borehole formed in a subterranean formation. The acoustic sensors are used to collect acoustic signal data while the acoustic sensors are maintained in a non-contact position with respect to the wall of the borehole. The data may be processed to determine the desired velocity vector.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: July 23, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Henri-Pierre Valero, Jean-Christophe Auchere, Abderrhamane Ounadjela, Hiroshi Nakajima
  • Patent number: 10309825
    Abstract: A distributed acoustic sensing system for use in a wellbore can include a shutter positioned between an amplifier and an optical-wave flow controller of the distributed acoustic sensing system for reducing optical noise in the distributed acoustic sensing system. The distributed acoustic sensing system can also include a controller operable to transmit a signal to the shutter to (i) open the shutter for allowing an optical pulse to transmit through the shutter, and (ii) close the shutter for preventing an extraneous optical waveform, that generates at least a portion of the optical noise, from transmitting through the shutter.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: June 4, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Kwang Il Suh, Ira Jeff Bush
  • Patent number: 10215884
    Abstract: In some embodiments, an apparatus and a system, as well as a method and an article, may operate to acquire acoustic noise data by one or more receivers, the acoustic noise provided by a passive source comprising a down hole tool body moving within a borehole, and/or a positioning device or a measurement device attached to the tool body. Additional operations may include processing the acoustic noise data to determine receiver calibration parameters, and/or formation properties. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: February 26, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Burkay Donderici
  • Patent number: 10197693
    Abstract: Methods and systems of barrier evaluation are disclosed. The method includes obtaining vibration measurement data measured in a wellbore having at least one casing. In addition, the method includes determining a boundary definition of the barrier between the casing and a formation, based on the vibration measurement data. Further, the method includes evaluating the barrier based on the one boundary definition. The system includes a vibration sensor located in the wellbore having at least one casing and a vibration source for generating vibrations. The system may also include a data logging system of producing vibration measurement data received with the vibration sensor and a processor for determining at least one boundary definition of barrier between the casing and a formation, based on the vibration measurement data and evaluating the barrier based on the at least one boundary definition.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: February 5, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ram Sunder Kalyanraman, Bernard Georges Frignet
  • Patent number: 10175375
    Abstract: A system and method for effective estimation of properties of a formation using acoustic array processing is disclosed. An acoustic tool is directed to a zone of interest in the formation and generates a first signal. Real data corresponding to the first signal is then received. One or more basic parameters are provided as input. The basic parameters may include parameters relating to the acoustic tool or parameters relating to the zone of interest. A time semblance shear slowness and a frequency semblance shear slowness are determined using the basic parameters. A mask is then selected using the determined time semblance and frequency semblance shear slowness values and used to isolate a dispersion curve. A shear slowness value is selected from the dispersion curve and quality control is performed on the selected shear slowness value.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: January 8, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Pradip Kumar Mukhopadhyay, Batakrishna Mandal
  • Patent number: 10175094
    Abstract: The present techniques are directed to systems and methods for monitoring parameter data from sensors, for example, in a subsea environment. In one method, an electrical signal including data from the subsea unit is converted into an acoustic signal. The acoustic signal is directed through the water column towards a fiber optic cable. The acoustic signal is detected by changes in a light signal carried in the fiber optic cable, and the changes in the light signal are decoded to obtain a data stream representing the parameter data.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: January 8, 2019
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Michael G. Starkey, Kevin T. Corbett
  • Patent number: 10107927
    Abstract: A method for monitoring a subsurface during a 4-dimensional (4D) survey. The method includes obtaining an area of the subsurface that needs to be monitored; identifying receiver and source locations for the area and source frequencies to be emitted into the area based on demigration or inverse ray tracing; performing a light base survey for the area; performing a light monitor survey for the area; and generating an image of the area based on a comparison of (i) the light base survey, and (ii) the light monitor survey for the area.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: October 23, 2018
    Assignee: SPOTLIGHT
    Inventor: Habib Alkhatib
  • Patent number: 10108762
    Abstract: Conventional computational simulation and inversion of subsurface flow is expensive, which is wasteful in terms of time and energy consumption. The present invention discloses a process for implementation of mathematical techniques such as forward simulation, sensitivity analysis, and inversion to physical microstructure models for subsurface fluid simulation. This process not only offers accurate and reliable results, but also is cost effective.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: October 23, 2018
    Assignee: International Business Machines Corporation
    Inventors: Claudius Feger, Lior Horesh, Ulisses T. Mello, Maria J. B. Moura
  • Patent number: 10060251
    Abstract: A method of measuring fluid flow conditions in a wellbore includes generating an acoustic probe signal during fluid flow along the wellbore, measuring the performance attribute of the acoustic probe signal within a target frequency range, and of the fluid medium in at least a part of the wellbore based on the measured performance parameters. The target frequency range of the acoustic probe signal encompasses a bubble resonance frequency range for vapor bubbles in the wellbore, for example having frequencies in excess of 20 kHz. An estimated bubble size value may be calculated based on determining a frequency at which the measured probe signal experiences the retardation or peak attenuation.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: August 28, 2018
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Christopher Lee Stokely
  • Patent number: 10041343
    Abstract: Various micro-sonic density imaging-while-drilling systems and methods are disclosed. In at least some forms, the micro-sonic logging tool is embodied in a drill collar having at least one stabilizer blade. One or more acoustic transmitters are set in a distal face of the stabilizer blade to generate acoustic waves. One or more receivers can also be set in the distal face of the stabilizer blade to detect P-waves and S-waves that have propagated through the formation making up the borehole wall. Processing circuitry measures the velocity or slowness of the acoustic waves and optionally associates the measured values with a spot on the borehole wall as identified. Multiple transmitters can be used if it is desired to obtain compensated measurements. The tool can further include a fluid cell to measure acoustical properties of the borehole fluid, which can be used to convert the formation slowness measurements into density measurements.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: August 7, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Roland E. Chemali, Moustafa E. Oraby
  • Patent number: 9897715
    Abstract: Various systems and methods are disclosed for implementing and using a multi-axial induction borehole imaging tool that includes emitters that induce, at azimuthally-spaced positions on a borehole wall, a plurality of fields having components in three non-coplanar directions within a formation. The tool also includes directionally sensitive inductive sensors that sense the components caused by each of the one or more inductive emitters, and a downhole controller that processes signals received from the directionally sensitive inductive sensors to provide a set of measurements representative of an impedance tensor at each position.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: February 20, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Burkay Donderici, Ferhat T. Celepcikay, Luis E. San Martin
  • Patent number: 9829597
    Abstract: Techniques involve obtaining acoustic data from an acoustic logging tool, where the acoustic data includes waves reflected from the casing, the annular fill material, the formation, and/or interfaces between any of the casing, the annular fill material, and the formation. A crude casing thickness, tool position (e.g., eccentering), mud sound velocity may be estimated using the acoustic data. A specular reflection signal may also be estimated based on the acoustic data. A modeled waveform may be generated using the estimated specular reflection signal and one or more model parameters, such as an estimated crude casing thickness, an estimated tool position, an estimated sound velocity of mud between the acoustic logging tool and the casing, an estimated impedance of the annular fill material, and an estimated impedance of the mud. The modeled waveform may be calibrated in some embodiments.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: November 28, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Smaine Zeroug, Jiaqi Yang, Sandip Bose
  • Patent number: 9757770
    Abstract: Apparatus and techniques are described, such as for obtaining information indicative of an acoustic characteristic of a formation, including using a transducer assembly, comprising a base plate, a first piezoelectric slab and a second piezoelectric slab. The base plate includes a first region extending axially in a first direction beyond the first and second piezoelectric slabs along a specified axis of the base plate and a second region extending axially in a second direction, opposite the first direction, beyond the first and second piezoelectric slabs. In various examples, a length of the first region along the specified axis is different than a length of the second region to provide an asymmetric configuration. In various examples, an anchoring element is mechanically coupled to the base plate at a location corresponding to a node location of a specified acoustic vibration mode.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: September 12, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Chung Chang, Chen Li, Arthur Cheng, Jing Jin
  • Patent number: 9746568
    Abstract: An example method for displaying sonic logging data associated with a formation surrounding a borehole can include acquiring sonic data at a plurality of depths using an acoustic array located in the borehole and transforming the acquired sonic data from a time-space domain to a frequency-wave number domain at a limited number of discrete frequencies. The method can also include estimating slowness values at the limited number of discrete frequencies from the transformed sonic data, interpolating the estimated slowness values to obtain a projection of one or more slowness-frequency dispersions of the acquired sonic data and displaying the projection of the slowness-frequency dispersions. The projection of the slowness-frequency dispersions can include a plurality of color bands corresponding to each of the limited number of discrete frequencies.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: August 29, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Toshihiro Kinoshita, Hiroaki Yamamoto, Takeshi Fukushima
  • Patent number: 9725987
    Abstract: A method of performing a stimulation operation for a subterranean formation penetrated by a wellbore is provided. The method involves collecting pressure measurements of an isolated interval of the wellbore during injection of an injection fluid therein, generating a fracture closure from the pressure measurements, generating transmissibility based on the fracture closure and a mini fall off test of the isolated interval during the injection, obtaining fracture geometry from images of the subterranean formation about the isolated interval, and generating system permeability from the transmissibility and the fracture geometry. The method may also involve deploying a wireline stimulation tool into the wellbore, isolating an interval of the wellbore and injecting fluid into the interval with the wireline stimulation tool. The fracture geometry may be obtained by imaging the formation, and fracture geometry may be obtained from core sampling.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: August 8, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Kevin Wutherich, Kirby Jon Walker, Walter Sawyer, Babatunde Ajayi
  • Patent number: 9672597
    Abstract: A method for reducing noise in flouroscopic images by detection of the traits in the curvelet domain, matching of the detected traits and time-domain filtering adapted to the type of coefficients associated with a trait. The method uses the discrete curvelet transforms of the images from a sequence. The denoised coefficients are detected, then transmitted to a step for locally matching the traits, the matched data subsequently undergo a step for time-domain filtering allowing the movement of the objects to be preserved in the image and a step for a 2D IDCT (Inverse Discrete Curvelet Transform) in order to produce the final image.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: June 6, 2017
    Assignee: THALES
    Inventors: Carole Amiot, Catherine Girard
  • Patent number: 9664816
    Abstract: An example method for fracture identification and characterization may include positioning a magnetic dipole transmitter and a magnetic dipole receiver within a borehole in a subterranean formation. At least one of the magnetic dipole transmitter and the magnetic dipole receiver may be tiled with respect to an axis of the borehole. The magnetic dipole transmitter may generate a time-varying electromagnetic (EM) signal. The magnetic dipole receiver may measure a response of the formation to the time-varying EM signal; the response may include at least two depths of a formation and at least two azimuthal orientations of the formation with respect to the axis of the borehole. An image of the formation may be generated based, at least in part, on the response, and at least one fracture characteristic may be determined based, at least in part, on the first image and a synthetic fracture image.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: May 30, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Burkay Donderici, Yumei Tang
  • Patent number: 9664039
    Abstract: The present disclosure involves a novel way of using drilling vibrations generated by the deformation of a rock formation in response to forces acting on the rock formation, where the forces are related to a drill bit and/or drilling fluid system, to identify the nature and occurrence of fractures, fracture swarms and other mechanical discontinuities (boundaries) such as bedding planes and/or faults that offset or otherwise separate rock formations with different mechanical rock properties.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: May 30, 2017
    Assignee: Fracture ID, Inc.
    Inventors: R. Christopher Neale, James D. Lakings
  • Patent number: 9605536
    Abstract: Acoustic data acquired in a MWD/LWD system can be compressed for transmission to the surface. The compression technique can include semblance processing acoustic signals received at a plurality of receivers spaced apart from a transmitter to generate a semblance projection at each of a plurality of depths. Peaks of the semblance projection can then be telemetered to the surface, with each peak including a slowness (velocity) value and a coherence (semblance) value. The telemetered values may be processed at the surface to generate logs as a function of depth.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 28, 2017
    Assignee: Weatherford Technology Holdings, LLC
    Inventor: Medhat Mickael
  • Patent number: 9557442
    Abstract: A method of simulating a borehole acoustic response in an anisotropic formation of the crust of the earth includes formulating a geometric model of the formation. The geometric model includes a plurality of layers definable in a cylindrical coordinate system defined by an axial direction normal to each of the layers, a radial direction relative to the axial direction, and a circumferential direction relative to the axial direction. The method also includes formulating a computational model of wave propagation in the formation. The computational model includes field variables and a wave equation describing a behavior of the field variables. The field variables are represented as respective Fourier series expansions of Tr-periodic harmonics in the circumferential direction. The method also includes numerically solving the computational model.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: January 31, 2017
    Assignee: MAERSK OLIE OG GAS A/S
    Inventor: Ole Jørgensen
  • Patent number: 9529110
    Abstract: To construct a reduced order model of a subterranean structure, a model reduction algorithm is applied to produce the reduced order model that is an approximation of a true model of the subterranean structure. The model reduction algorithm uses interpolating frequencies that are purely imaginary to enhance computational efficiency of the algorithm.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: December 27, 2016
    Assignee: WESTERNGECO L. L. C.
    Inventors: Vladimir Druskin, Mikhail Zaslavsky
  • Patent number: 9523784
    Abstract: Methods and systems for investigating a formation surrounding a wellbore. The methods involve a semblance-based analysis of downhole data, for example low frequency downhole data. The semblance-based analysis includes group semblance mapping of the data, followed by single shot semblance map handling, followed by multiple shot data handling. The systems include a seismic source, a seismic receiver, and an electronics system for processing data according to a process including: group semblance mapping, single shot map handling, and multiple shot data handling. The seismic source may generate low frequency signals, and the seismic receiver may be two or more receiver subsystems that include at least two axially spaced-apart hydrophones and at least one multi-component geophone.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: December 20, 2016
    Assignee: Schlumberger Technology Corporation
    Inventor: Jacques Orban
  • Patent number: 9494705
    Abstract: Cased-hole radial profiling of shear parameters from sonic measurements is disclosed.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: November 15, 2016
    Assignee: Schlumberger Technology Corporation
    Inventor: Bikash K. Sinha
  • Patent number: 9417352
    Abstract: Systems and methods for the estimating a plurality of anisotropic elastic constants (Cij) using borehole dispersions and refracted compressional headwave velocity at a single logging depth in a vertical, deviated, or horizontal wellbore in a transversely-isotropic with a vertical axis of symmetry (“TIV”) formation. The estimated elastic constants can then be used to calculate near-wellbore stress distributions in the wellbore, which aids in an optimal completion design, such as for shale-gas production in the presence of shale heterogeneity.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: August 16, 2016
    Assignee: Schlumberger Technology Corporation
    Inventor: Bikash K. Sinha
  • Patent number: 9406151
    Abstract: A non-transitory computer-readable medium stores therein a data storage program causing a computer to execute a process. The process includes obtaining first data by grouping values of spatially discrete distribution points at each of times by each of the spatially discrete distribution points and chronologically sorting the grouped values, obtaining second data by compressing the first data in accordance with at least one of a plurality of compression conditions for each of the distribution points or each group of a plurality of the distribution points, the plurality of compression conditions including a necessity of compression, a compression interval, and a compression algorithm type, and storing the second data in a storage device.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: August 2, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Eiji Ohta
  • Patent number: 9366777
    Abstract: The present disclosure relates to methods and apparatuses for evaluating a porous earth formation. The method may include: generating an acoustic wave in a borehole fluid; measuring an attenuation of the acoustic wave; and estimating a permeability of an earth formation acoustically coupled to the borehole fluid using the estimated attenuation and a theoretical attenuation. The method may also include estimating a theoretical attenuation for the borehole fluid using acoustic properties of the borehole fluid. The apparatus for performing the method may include: an acoustic source, an acoustic sensor, and a processor configured to estimate the attenuation of an acoustic wave generated by the acoustic source.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: June 14, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Vitaly N. Dorovsky, Evgeny Igorevich Romensky, Anton Vladimirovich Sinev
  • Patent number: 9354342
    Abstract: A method of processing acoustic waveform data is disclosed. An acoustic logging tool acquires acoustic waveform data. An adaptive frequency filter is determined. The acoustic waveform data is filtered using the adaptive frequency filter. A formation slowness is determined from the filtered acoustic waveform data. The lower bound of the adaptive frequency filter may be determined using a polynomial function of a minimum excitement frequency parameter, a slowness parameter, and a third parameter. The upper bound of the adaptive frequency filter may be determined using a polynomial function of a peak excitement frequency parameter, the slowness parameter, and the third parameter.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: May 31, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Batakrishna Mandal
  • Patent number: 9348052
    Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to record a plurality of acoustic waveforms corresponding to acoustic waves received at azimuthally orthogonal dipole receiver arrays surrounded by a geological formation, the waves being generated by azimuthally orthogonal transmitter arrays. Further activity may include analytically estimating a global minimum of a predefined objective function with respect to an azimuth angle at a point in an auxiliary parameter space associated with a set of auxiliary parameters, minimizing the objective function at the analytically estimated angle with respect to the auxiliary parameters, removing existing ambiguities associated with the fast and slow principal flexural wave axes, and determining at least one property of the geological formation based on the global minimum. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: May 24, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Mark V. Collins, Arthur Cheng
  • Patent number: 9207342
    Abstract: A method is described for determining a shear wave velocity of a transversely isotropic region of an earth formation traversed by a wellbore with a non-zero relative dip angle between a longitudinal axis of the wellbore and an axis of symmetry of the TI region. A sonic tool is used to measure shear velocities in the TI region with polarizations orthogonal to the longitudinal axis of the wellbore. One of the shear velocities is identified as a quasi-shear velocity. A shear wave velocity is calculated, as a function of the quasi-shear velocity, for propagation in a direction along the axis of symmetry of the TI region. Where the orientation of the sonic tool is not known and the measured shear velocities comprises a fast shear velocity and a slow shear velocity, the method comprises identifying either the fast or the slow shear velocity as a quasi-shear mode.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: December 8, 2015
    Assignee: Chevron U.S.A. Inc.
    Inventor: Gregory John Ball
  • Patent number: 9188698
    Abstract: A downhole tool, having a central axis defined, may selectively include a sensor section including one or more arms connected to the tool body with an open/close mechanism. The open/close mechanism is configured to move in a radial direction with respect to the axis of the tool body. The tool also includes at least one sensor attached to the arm, and the tool may include at least one transmitter section on the tool. The transmitter is configured to transmit acoustic energy to a formation.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: November 17, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Hitoshi Tashiro, Jahir Pabon
  • Patent number: 9075159
    Abstract: A system and computer-implemented method for determining properties of a subsurface region of interest from seismic data include obtaining seismic data and an initial earth property model, forward modeling using the initial earth property model to create modeled seismic data, transforming the modeled and actual seismic data to create frequency domain modeled and actual seismic data including amplitude portion and phase portions, measuring the misfit between the frequency domain modeled and actual seismic data to produce frequency domain residual seismic data, performing phase unwrapping of certain observed frequency components of the frequency domain residual seismic data to create an unwrapped residual phase portion, and inverting the unwrapped residual phase portion to determine desired properties of the subsurface region of interest.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: July 7, 2015
    Assignee: Chevron U.S.A., Inc.
    Inventors: John Kenneth Washbourne, Nikhil Koolesh Shah, Kenneth Paul Bube
  • Patent number: 9030911
    Abstract: Disclosed herein is a method of delineating a second wellbore from a first wellbore. The method includes, emitting acoustic waves from a tool in the first wellbore, receiving acoustic waves at the tool reflected from the second wellbore, and determining orientation and distance of at least a portion of the second wellbore relative to the tool.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: May 12, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Xiao Ming Tang, Douglas J. Patterson
  • Patent number: 8944183
    Abstract: The present disclosure is related to apparatuses and methods measuring and processing a characteristic of subsurface earth formations penetrated by a borehole. More specifically this present disclosure relates to a method and apparatus for measuring and processing an acoustic characteristic such as formation shear wave velocity of subsurface sonic waves after these waves traverse earth formations adjoining a borehole or passing through a portion of the subsurface. The apparatus may include: a bottomhole assembly, a drill bit configured to generate an acoustic signal, at least two acoustic detectors, and a processor. The acoustic signal may include a specific multipole signal that may propagate through an earth formation along the borehole. The method may include use of the apparatus, including steps for estimating a shear velocity of the acoustic signal using signals from the at least two acoustic detectors.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: February 3, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Theodorus W. Geerits, Douglas J. Patterson