Directional Source Or Detector Patents (Class 181/104)
  • Patent number: 10947835
    Abstract: A borehole mapping tool may include a probe casing having first and second ends that is sized to receive at least one location probe. An outer casing sized to be closely received by a borehole surrounds the probe casing so that an interior space is defined therebetween. A first end cap is mounted to a first end of the outer casing so that the first end of the probe casing extends beyond the first end cap. A second end cap is mounted to a second end of the outer casing so that the second end of the probe casing extends beyond the second end cap.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: March 16, 2021
    Assignee: Ozzie's Enterprises LLC
    Inventors: Dwayne Osadchuk, Ryan Littlefield
  • Patent number: 10895654
    Abstract: A method, including: determining, with a computer, a reflectivity spectrum; generating, with a computer, a target spectrum that is a convolution of a roll-off function and the reflectivity spectrum; and filtering, with a computer, seismic data to cause the seismic data to have the target spectrum.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: January 19, 2021
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Kyle J. Basler-Reeder, Spyridon K. Lazaratos, Eugene C. Trantham, Michael P. Matheney
  • Patent number: 10809405
    Abstract: Methods utilizing ultrasonic acoustic logging tools are provided for detecting thin formation layers that present markedly higher compliance than that of the surrounding rock in, for example, a laminated tight hydrocarbon-bearing formation. These layers may be interpreted as presenting potential interfacial and planes of weakness that may have bearing on the extent of a hydraulic fracture propagating across them.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: October 20, 2020
    Assignee: Schlumberger Technology Corporation
    Inventors: Smaine Zeroug, Bikash Kumar Sinha, Peter Tilke, George Alan Waters
  • Patent number: 10761064
    Abstract: Methods are provided for making, processing, and analyzing in situ measurements to indicate presence of thin bedding planes of weakness in a formation. Bedding planes as small as a few inches and smaller are identified using an ultrasonic borehole tool. In one embodiment, detected pseudo-Rayleigh waveforms are processed to determine whether multiple events are detected. If so, lamination and a likely bedding plane of weakness are identified. In another embodiment, a sonic borehole tool is run in conjunction with the ultrasonic borehole tool. Indications of shear and pseudo-shear wave speeds are compared, and where different, a bedding plane of weakness is identified. In another embodiment, a microresistivity imager is run with the ultrasonic borehole tool, and at locations where multiple events are not detected, the image obtained by the imager is inspected to find locations of sharp contrast with adjacent locations to thereby identify bedding planes of weakness.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: September 1, 2020
    Assignee: Schlumberger Technology Corporation
    Inventor: Smaine Zeroug
  • Patent number: 10731967
    Abstract: The present invention relates to a system for quickly detecting tunnel deformation, comprising a rail walking mechanism (1) disposed on a subway rail, and an acquisition system (2) disposed on the rail walking mechanism (1); wherein the rail walking mechanism (1) is a T-shaped walking platform, comprising a cross shaft (11), a longitudinal shaft (12) and a stand column (13); the cross shaft (11) and the longitudinal shaft (12) are connected to form the T-shaped platform; tread wheels (16) are disposed at the bottom of the T-shaped platform; one end of the stand column (13) is vertically connected with the cross shaft (11), and the other end of the stand column is used for configuring an operating platform (14) of the acquisition system (2); the acquisition system (2) comprises a fractional laser structured light source (21), industrial focus-fixed cameras (22) and a computer; and the computer is connected with the industrial focus-fixed cameras (22).
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 4, 2020
    Assignee: TONGJI UNIVERSITY
    Inventor: Yong Yuan
  • Patent number: 10690805
    Abstract: An inspection system to measure the condition of at least a wall of a ground opening, the inspection system having a head unit for lowering into a borehole during a data collection phase wherein at least one set of test data is collected concerning one or more physical characteristics of the borehole during the data collection phase, the head unit having an internal measurement system and a sensor arrangement with a plurality of sensors facing radially outwardly of a head axis that is generally parallel to at least a portion of a borehole axis, the plurality of sensors allowing the head unit to be moved during the data collection phase without rotation about the head axis, the plurality of sensors at least partially producing the at least one set of test data collected during the data collection phase.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: June 23, 2020
    Assignee: Pile Dynamics, Inc.
    Inventors: George R. Piscsalko, Dean A. Cotton, Richard E. Berris, Jr., Tyler A. Piedimonte
  • Patent number: 10662764
    Abstract: A near-bit constant-power wireless short-distance transmission apparatus includes a transmitting portion and a receiving portion. The transmitting portion is connected to a near-bit measurement sub while the receiving portion is connected to a measurement while drilling system. The transmitting portion processes data received by the bit measurement sub and then transmits it to the receiving portion. The receiving portion further processes the information and then transmits it to the measurement while drilling system. An insulating sub is inserted in the transmitting portion and separates the transmitting portion into a transmitting positive pole and a transmitting negative pole, which become electrically isolated from each other. Another insulating sub is inserted in the receiving portion and separates the receiving portion into a receiving positive pole and a receiving negative pole, which become electrically isolated from each other.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: May 26, 2020
    Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Yuntao Sun, Wenxuan Chen, Wenxiu Zhang, Yongyou Yang, Jian Zheng
  • Patent number: 10641917
    Abstract: An example downhole tool incorporating aspects of the present disclosure may include a tool body and a first flexible material coupled to the tool body. A transmitter may be coupled to the first flexible material. A receiver may coupled to the first flexible material, with the receiver having at least two antenna windings positioned in different orientations. A control unit may be communicably coupled to the transmitter and the receiver, the control unit having a processor and a memory device coupled to the processor, the memory device containing a set of instruction that, when executed by the processor, cause the processor to generate an electromagnetic signal in a downhole element using the transmitter, and measure a response of the downhole element to the electromagnetic signal using the at least two antenna windings of the receiver.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 5, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Burkay Donderici, Luis San Martin, Dagang Wu
  • Patent number: 10606248
    Abstract: A data transmission and control device in a multi-node sensor network, comprising a processing control module (110). The processing control module (110) comprises an instruction processing unit, a data processing unit, at least one group of first-type interfaces (J101-J10n), at least one group of second-type interfaces (J201-J20n), one group of fifth-type interfaces (J500) and one group of sixth-type interfaces (J600). The fifth-type interfaces (J500) have communication connections with an external control device (120). The first-type interfaces (J101-J10n) respectively have communication connections with a sensor (140) so as to cooperate with the instruction processing unit to configure and query a parameter of the sensor (140), and to upgrade firmware and report feedback information of the sensor (140) and the processing control module.
    Type: Grant
    Filed: January 23, 2016
    Date of Patent: March 31, 2020
    Assignee: THE WUHAN DIGITAL PET CO., LTD
    Inventor: Lei Fang
  • Patent number: 10550683
    Abstract: An example method for removal of stick-slip vibrations may comprise receiving a command directed to a controllable element of a drilling assembly. A smooth trajectory profile may be generated based, at least in part, on the command. A frictional torque value for a drill bit of the drilling assembly may be determined. The example method may further include generating a control signal based, at least in part, on the trajectory profile, the frictional torque value, and a model of the drilling assembly, and transmitting the control signal to the controllable element.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: February 4, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jason D. Dykstra, Fanping Bu, Yuzhen Xue
  • Patent number: 10428640
    Abstract: A borehole mapping tool may include a probe casing having first and second ends that is sized to receive at least one location probe. An outer casing sized to be closely received by a borehole surrounds the probe casing so that an interior space is defined therebetween. A first end cap is mounted to a first end of the outer casing so that the first end of the probe casing extends beyond the first end cap. A second end cap is mounted to a second end of the outer casing so that the second end of the probe casing extends beyond the second end cap.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: October 1, 2019
    Assignee: Ozzie's Enterprises LLC
    Inventors: Dwayne Osadchuk, Ryan Littlefield
  • Patent number: 10408799
    Abstract: A photoacoustic imaging apparatus includes a signal processor. The signal processor includes an adding unit configured to add received signals obtained by acoustic wave detecting devices to obtain a summed signal, a normalizing unit configured to normalize the summed signal for each acoustic wave detecting device with reference to an amplitude value in the received signal in the acoustic wave detecting device at the time when a maximum amplitude value in the summed signal is obtained to obtain a normalized signal, a reducing unit configured to subtract the normalized signal from the received signal for each acoustic wave detecting device to obtain a reduced signal in which the amplitude value in the received signal at the time when the maximum amplitude value in the summed signal is obtained is reduced, and an imaging unit configured to generate image data using the reduced signals.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: September 10, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryuichi Nanaumi
  • Patent number: 10401203
    Abstract: A flowmeter for use in a borehole that includes a transmitter and receivers spaced axially away from the transmitter. Energizing the transmitter creates electrical field lines that extend between the transmitter and the receivers, and that pass through fluid flowing past the flowmeter. The magnitude of the electrical field lines at each of the receivers is measured, and varies in response to different types of fluid flowing past the flowmeter, and changes in phase of the fluid. Example transmitters and receivers include coils and electrodes. The transmitters and receivers can define elongate arrays, where the arrays are arranged parallel to, oblique, or perpendicular to an axis of the borehole. Multiple array orientations provide a radial cross sectional image of the flowing fluid. Thus not only can multi-phase flow be detected, but the type of flow regime can be identified.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: September 3, 2019
    Assignee: Baker Hughes Incorporated
    Inventors: Otto N. Fanini, Mohamed Daoud
  • Patent number: 10393903
    Abstract: An acoustic logging tool includes a support structure and a set of acoustic transducers coupled to the support structure. The set of acoustic transducers includes a first acoustic transducer and a second acoustic transducer facing the same direction. Each of the first and second acoustic transducers includes a substrate having a first end, a second end, a first side, and a second side. Each acoustic transduce further includes a first piezoelectric element coupled to the first side of the substrate and a second piezoelectric element coupled to the second side of the substrate. The first and second ends of the substrate extend beyond the first and second piezoelectric elements and are fixed to the support structure.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: August 27, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jing Jin, Chung Chang
  • Patent number: 10378341
    Abstract: Systems, methods, and devices for evaluating proper cement installation in a well are provided. In one example, a method includes receiving acoustic cement evaluation data having a first parameterization. At least a portion of the entire acoustic cement evaluation data may be corrected to account for errors in the first parameterization, thereby obtaining corrected acoustic cement evaluation data. This corrected acoustic cement evaluation data may be processed with an initial solid-liquid-gas model before performing a posteriori refinement of the initial solid-liquid-gas model, thereby obtaining a refined solid-liquid-gas model. A well log track-indicating whether a material behind the casing is a solid, liquid, or gas—may be generated by processing the corrected acoustic cement evaluation data using the refined solid-liquid-gas model.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: August 13, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Robert van Kuijk, Ram Sunder Kalyanraman
  • Patent number: 10331025
    Abstract: The present invention is a method and an apparatus that can image objects immersed in optically opaque fluids using ultrasound in a confined space and in a harsh environment. If the fluid is not highly attenuating at frequencies above 1 MHz, where commercial ultrasound scanners are available, such scanners can be adapted for imaging in these fluids. In the case of highly attenuating fluids, such as drilling mud, then a low frequency collimated sound source is used.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: June 25, 2019
    Assignee: Los Alamos National Security, LLC
    Inventors: Dipen N. Sinha, Curtis F. Osterhoudt, Cristian Pantea
  • Patent number: 10301932
    Abstract: Systems, methods, and software for determining impedance of a casing-cement bond are described. In some aspects, the bond impedance is determined based on results of comparing a measured waveform and a model waveform. The model waveform corresponds to an estimated impedance of the bond and corresponds to a ray tracing of an acoustic signal that accounts for a radiation pattern of the acoustic transmitter and a curvature of the well casing. The measured waveform and the model waveform are generated based on operating an acoustic transmitter and an acoustic receiver within a wellbore comprising the well casing.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: May 28, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Tianrun Chen, Yibing Zheng, Tatiana Gilstrap, Arthur Chuen Hon Cheng, Robert Eric Epstein, Zhijuan Zhang
  • Patent number: 10294772
    Abstract: An example apparatus for downhole cement inspection may include a tool body and an acoustic transmitter coupled to the tool body. An acoustic receiver may be coupled to the tool body at a first distance from the acoustic transmitter. A first array of acoustic receivers may be coupled to and positioned around a circumference of the tool body at a second distance from the acoustic transmitter. The second distance may be greater than the first distance. The acoustic receiver may be one receiver of a second array of acoustic receivers coupled to and positioned around the circumference of the tool body at the first distance. The first distance may be approximately three feet and the second distance may be approximately five feet.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: May 21, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jim T. Hill, Philip E. Fox, Arthur Chuen Hon Cheng, Philip William Tracadas
  • Patent number: 10233742
    Abstract: An acoustic ranging system utilizes gradiometric data to determine the distance between a first and second well without any knowledge or involvement of the borehole or formation characteristics. An acoustic signal is generated from a downhole or surface source, propagated along a first well, and then received by receivers positioned along the second well. Processing circuitry coupled to the receivers takes a ratio of the absolute signal to the gradient signal in a certain direction to thereby determine the relative position and distance between the two wells.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: March 19, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Burkay Donderici
  • Patent number: 10221673
    Abstract: A method for generating a cement bond log, in some embodiments, comprises transmitting sonic or ultra-sonic waves in multiple directions from a logging tool disposed in a wellbore, receiving reflected waves at the logging tool and recording waveforms based on the received waves, processing the waveforms to determine numerical values that indicate a degree of bonding associated with multiple portions of a cement sheath disposed in the wellbore, aggregating the numerical values, and generating a composite image based on the aggregated numerical values.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: March 5, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Gary James Frisch, Philip Edmund Fox
  • Patent number: 10138727
    Abstract: Apparatus and method for characterizing a barrier installed in a borehole traversing a formation including locating an acoustic tool with a receiver and a transmitter at a location in the borehole, activating the acoustic tool to form acoustic waveforms, wherein the receiver records the acoustic waveforms, and processing the waveforms to identify barrier parameters as a function of azimuth and depth along the borehole, wherein the waveforms comprise at least two of sonic signals, ultrasonic pulse-echo signals, and ultrasonic pitch-catch signals.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: November 27, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Smaine Zeroug, Bikash K. Sinha, Sandip Bose, Jiaqi Yang, Ting Lei, Ram Sunder Kalyanaraman
  • Patent number: 10012749
    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.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: July 3, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Sandip Bose, Smaine Zeroug, Jiaqi Yang
  • Patent number: 9982527
    Abstract: A device and method for wellbore inspection comprising a downhole tool. The downhole tool may comprise a wireline, a sensor cartridge, and a plurality of centralizers. The method for detecting defects within a wellbore may comprise inserting a downhole tool into a wellbore, wherein the downhole tool comprises a wireline, a sensor cartridge, and a plurality of centralizers. The method also includes producing an acoustic signal with the plurality of centralizers and recording the acoustic signal with a sensor, wherein the sensor records the acoustic signal within an aperture.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: May 29, 2018
    Assignee: GOWell International, LLC
    Inventors: Jinsong Zhao, Qinshan Yang
  • Patent number: 9910176
    Abstract: Controllable tail buoy. At least some of the illustrative embodiments are methods including: towing a sensor streamer and tail buoy through water, the sensor streamer defining a proximal end and a distal end with the tail buoy coupled to the distal end, and the towing with the sensor streamer and the tail buoy submerged; and during the towing controlling depth of the distal end of the sensor streamer at least in part by the tail buoy; and steering the distal end of the sensor streamer at least in part by the tail buoy.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: March 6, 2018
    Assignee: PGS Geophysical AS
    Inventor: Troy L. McKey, III
  • Patent number: 9885795
    Abstract: An embodiment of a method of estimating characteristics of an earth formation includes: disposing an acoustic tool in a borehole in an earth formation, the acoustic tool including an acoustic multipole transmitter and at least one multipole acoustic receiver; transmitting acoustic signals into the borehole, the acoustic signals generating at least one acoustic body wave that radiates away from the borehole into a far-field formation region; measuring reflected signals including body waves reflected from reflective boundaries in the far-field formation region; identifying a reflective boundary in the formation and reflection attributes associated with the reflective boundary; and estimating at least one of a thickness, distance and a lateral extent of a hydrocarbon formation feature based on the reflected signals and the reflection attributes.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: February 6, 2018
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Natasa Mekic, Douglas J. Patterson
  • Patent number: 9823376
    Abstract: An acoustic measurement tool comprises a transmitter for generating acoustic signals and at least one acoustic receiver spaced from the transmitter and configured to receive an acoustic signal, generated by the transmitter, and which has encountered a medium of interest. Moreover, at least one acoustic reference receiver is located adjacent the transmitter and is configured to receive an acoustic signal, generated by the transmitter, prior to the acoustic signal encountering the medium of interest.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 21, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventor: Ioan-Alexandru Merciu
  • Patent number: 9645114
    Abstract: An instrument for determining fluid properties is provided. The instrument (300) includes a tube (304) receiving the fluid, a single magnet (302) attached to the tube, and a single coil (306) wound around the single magnet. The single coil is coupled to a pulse current source (312) and receives a pulse current that creates a magnetic field in the single coil, the created magnetic field interacting with the single magnet to drive the tube to vibrate. The instrument further includes a detector (306) coupled to the tube, wherein the detector is coupled to measurement circuitry (310) and detects properties of the tube as it vibrates, and the measurement circuitry determines the fluid properties based on the detected properties. The instrument also includes a housing (314) enclosing the tube, the single magnet, and the single coil wound around the single magnet.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: May 9, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Li Gao, Michael T. Pelletier, Mark A. Proett
  • Patent number: 9631480
    Abstract: Apparatus, systems, and methods may operate to emit acoustic pulses into a drilling fluid in a well bore, using a first acoustic transducer in a downhole tool, and detecting the acoustic pulses after reflection from the wall of the well bore, using a second acoustic transducer in the downhole tool. The faces of the first and second acoustic transducers are non-parallel. Further activities include emitting additional acoustic pulses into the drilling fluid using the second acoustic transducer, and detecting them using the second acoustic transducer. The acoustic velocity of the drilling fluid can be determined based on respective travel times. Additional apparatus, systems, and methods are described.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: April 25, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Paul Cooper, Kristopher V Sherrill, Ricardo Ortiz, Daniel Flores, Batakrishna Mandal
  • Patent number: 9477002
    Abstract: Methods and related systems are described for measuring acoustic signals in a borehole during a fracturing operation. The system includes a downhole toolstring designed and adapted for deployment in a borehole formed within a subterranean rock formation. A downhole rock fracturing tool opens and propagates a fracture in the subterranean rock formation. Dipole and/or quadrupole acoustic sources transmit acoustic energy into the subterranean rock formation. A receiver array measures acoustic energy traveling through the subterranean rock formation before, during and after the fracture induction. Geophones mounted on extendable arms can be used to measure shear wave acoustic energy travelling in the rock formation. The toolstring can be constructed such that the sources and receivers straddle the fracture zone during the fracturing.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: October 25, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Douglas E. Miller, Ahmad Latifzai, Romain Charles Andre Prioul, Bruce A. MacKay, Oliver C. Mullins, Andreas Hausot, Canyun Wang, Alireza Farahani
  • Patent number: 9310505
    Abstract: A technique includes providing a source in a first well and a seismic receiver in a second well to detect a seismic event that is caused by the source. The technique includes referencing clocks in the source and receiver to a common reference time frame and determining a time in the reference time frame at which the seismic source generates the seismic event.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: April 12, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: William B. Underhill, Scott W. Leaney, David Gerez, Alfredo Fayard
  • Patent number: 9110192
    Abstract: Methods and apparatus to identify layer boundaries in subterranean formations are described. An example method of identifying a layer boundary of a subterranean formation includes transmitting an acoustic signal from a transmitter into a borehole of the subterranean formation and receiving the acoustic signal at a receiver coupled to the downhole tool and spaced from the transmitter. Additionally, the example method includes logging an energy value associated with the acoustic signal received by the receiver as the downhole tool is moved in the borehole and identifying a change in the logged energy value associated with an impedance change in the subterranean formation to identify the layer boundary.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: August 18, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Jahir Pabon, Henri-Pierre Valero, Benoit Froelich
  • Patent number: 8973702
    Abstract: Seismic wave sources and related methods are provided. A seismic wave source includes a housing, plural pillars and an excitation system. The housing is split in two halves along a plane including a longitudinal axis of the housing. The plural pillars are made of piezoelectric elements and are positioned inside the housing to have one end in contact with a semi-cylindrical middle portion of one half of the housing and another end in contact with a semi-cylindrical middle portion of the other half of the housing. The excitation system connected by wires to the plural pillars and is configured to provide electrical signals to the piezoelectric elements. Upon receiving the electrical signals from the excitation system, the pillars generate forces on the housing thereby generating seismic waves.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: March 10, 2015
    Assignee: CGG Services SA
    Inventor: Francois-Xavier Gresillon
  • Patent number: 8861307
    Abstract: The subject disclosure relates to sonic logging while drilling. A transmitter and at least one receiver are mounted on a drill collar for performing sonic investigations of the formation traversing a borehole.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: October 14, 2014
    Assignee: Schlumberger Technology Corporation
    Inventor: Jahir Pabon
  • Patent number: 8408355
    Abstract: A downhole tool for subsurface disposal is provided. The tool comprises an elongated tool body, an enclosure attached to an exterior surface of the tool body. The enclosure comprises at least one transducer disposed at an angle with respect to a longitudinal axis of the enclosure, and an electronics board coupled to and disposed adjacent to the at least one transducer. The enclosure also defines an internal cavity, and the internal cavity contains a fluid for insulating the at least one transducer from a downhole environment. The fluid is in direct contact with the at least one transducer and the electronics board.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: April 2, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Miguel F. Pabon, Fernando Garcia Osuna, David B. Ayers
  • Patent number: 8261874
    Abstract: A method for attenuating out of band energy emitted from a seismic source used in a marine seismic survey. The method includes disposing the seismic source in a body of water and releasing a gas into a volume of water surrounding the seismic source. The released gas may be configured such that it displaces the volume of water surrounding the seismic source at a rate less than 2.9×106 cubic-meters per cubic-second.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: September 11, 2012
    Assignee: WesternGeco L.L.C.
    Inventors: Jon-Fredrik Hopperstad, Robert Laws, Julian Edward (Ed) Kragh
  • Patent number: 8261873
    Abstract: An apparatus and method for providing a downhole acoustic source is disclosed. The acoustic source includes a piston configured to oscillate in an axial direction of the acoustic source and produce an acoustic signal in a medium in contact with an exterior surface of the piston, and an elastomer disposed on an interior side of the piston, an acoustic impedance of the elastomer selected to match an acoustic impedance of the piston. A permanent magnet is configured to provide a permanent magnetic field oriented in the axial direction, and a coil disposed on an interior side of the piston produces an alternating magnetic field in the region of the permanent magnetic field. The elastomer may be, for example, a silicon rubber, a silicone jelly, and a silicone oil. A plurality of acoustic sources may be arranged to produce an acoustic dipole configuration or an acoustic quadrupole configuration.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: September 11, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Valeriy Richenstev, Vladimir Dubinsky, Douglas J. Patterson, Jonathan F. Hook, David H. Lilly
  • Patent number: 8256565
    Abstract: An enclosure for housing a transducer and electronics for disposal on a downhole tool. A transducer is disposed at an angle with respect to a longitudinal axis of the enclosure, wherein the enclosure contains a fluid surrounding the transducer. Enclosures also include transducers linked to motor means for selective rotation of the transducers within the enclosure. Enclosures with transducer arrays for phased or targeted signal transmission/detection.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: September 4, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Miguel F. Pabon, Fernando Garcia Osuna, David B. Ayers
  • Patent number: 8136625
    Abstract: A method for attenuating out of band energy emitted from a seismic source used in a marine seismic survey. The method includes disposing the seismic source in a body of water and releasing a gas into a volume of water surrounding the seismic source. The released gas may be configured such that it displaces the volume of water surrounding the seismic source at a rate less than 2.9×106 cubic-meters per cubic-second.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: March 20, 2012
    Assignee: WesternGeco L.L.C.
    Inventors: Jon-Fredrik Hopperstad, Robert Laws, Julian Edward (Ed) Kragh
  • Patent number: 8125848
    Abstract: Multipole acoustic logging-while-drilling (LWD) tools and associated methods are disclosed herein. In some embodiments, the disclosed acoustic LWD tool comprises a transmitter array and at least one receiver array. The transmitter array generates acoustic waves with an excitation pattern having a cutoff frequency greater than about 3 kHz. The receiver array is spaced apart from the transmitter array and is configured to detect said acoustic waves. Some of the disclosed method embodiments comprise: generating multipole acoustic waves in a fluid-filled borehole using an excitation pattern with a cutoff frequency greater than about 3 kHz; selectively detecting acoustic waves that propagate with said excitation pattern; and determining an acoustic shear wave slowness for a formation penetrated by the borehole.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: February 28, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Theodorus W. Geerits, Batakrishna Mandal, Denis P. Schmitt
  • Patent number: 8116167
    Abstract: A compact array of transducers is employed as a downhole instrument for acoustic investigation of the surrounding rock formation. The array is operable to generate simultaneously a first acoustic beam signal at a first frequency and a second acoustic beam signal at a second frequency different than the first frequency. These two signals can be oriented through an azimuthal rotation of the array and an inclination rotation using control of the relative phases of the signals from the transmitter elements or electromechanical linkage. Due to the non-linearity of the formation, the first and the second acoustic beam signal mix into the rock formation where they combine into a collimated third signal that propagates in the formation along the same direction than the first and second signals and has a frequency equal to the difference of the first and the second acoustic signals.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: February 14, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Paul A. Johnson, James A. Ten Cate, Robert Guyer, Pierre-Yves Le Bas, Cung Vu, Kurt Nihei, Denis P. Schmitt, Christopher Skelt
  • Patent number: 7954595
    Abstract: A borehole receiver for seismic testing has a support frame and an inflatable membrane configured to form a single, compact unit. The inflatable membrane has at least one sensor, such as an accelerometer affixed to the membrane. The at least one accelerometer may be adhesively affixed to an interior portion of the membrane with a cyanoacrylate adhesive. A pneumatic inflation system is used to inflate the membrane with pressurized air. In use, the membrane is slipped over the support frame and secured with a pair of O-rings. Once the borehole receiver is properly positioned in the borehole, pressurized air from the pneumatic inflation system inflates the membrane such that the at least one accelerometer achieves intimate coupling with a wall of the borehole to accurately measure dynamic seismic waves.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: June 7, 2011
    Assignee: The University of Kentucky Research Foundation
    Inventor: Michael E. Kalinski
  • Patent number: 7916578
    Abstract: A vibration source (10) includes an armature bar (12) having a major length dimension, and a driver (20A) positioned about the armature bar. The driver (20A) is movably coupled to the armature bar (12), and includes an electromagnet (40). During operation the electromagnet (40) is activated such that the driver (20A) moves with respect to the armature bar (12) and a vibratory signal is generated in the armature bar. A described method for generating a vibratory signal in an object includes positioning the vibration source (10) in an opening of the object, coupling the armature bar (12) to a surface of the object within the opening, and activating the electromagnet (40) of the driver (20A) such that the driver moves with respect to the armature bar (12) and a vibratory signal is generated in the armature bar and the object.
    Type: Grant
    Filed: May 17, 2008
    Date of Patent: March 29, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: James Minto, Martin H Sorrells, Thomas E. Owen, Edgar C. Schroeder
  • Patent number: 7913806
    Abstract: A measurement package for disposal on an apparatus such as a downhole tool or a tool like device. The measurement package including an enclosure, a first acoustic transducer housed within the enclosure, a second acoustic transducer housed within the enclosure and electronics housed within the enclosure that is in communication with the first and second transducers. Further, an acoustic transmitter and receivers can be disposed at an angle with respect to a longitudinal axis of the enclosure. The enclosure can contain attenuative material surrounding the transmitter and receivers, and electronics for controlling the transmitter and receivers and communicating with the downhole tool.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: March 29, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Miguel F. Pabon, Fernando Garcia Osuna, David B. Ayers
  • Patent number: 7839718
    Abstract: In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: November 23, 2010
    Assignees: Chevron U.S.A. Inc., Los Alamos National Security, LLC
    Inventors: Cung Khac Vu, Dipen N. Sinha, Cristian Pantea, Kurt Nihei, Denis P. Schmitt, Christopher Skelt
  • Patent number: 7755972
    Abstract: An acoustic borehole logging system for generation and detection of multipole modes used to determine elastic properties of earth formations characterized as inhomogeneous anisotropic solids. The system concurrently generates and senses monopole, dipole, quadrupole and any higher order pole in the borehole/formation system in order to characterize the elastic properties and stress state of material penetrated by the borehole. Multipole modes of all orders are induced simultaneously without the need for separate transmitter and receiver systems. Performance of the logging system is not compromised due to eccentering of the axis of the tool in the borehole, tool tilt with respect to the axis of the borehole, or mismatch of response sensitivity of multiple receivers within the tool.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: July 13, 2010
    Assignee: Precision Energy Services, Ltd.
    Inventors: Elan Yogeswaren, Lucio N. Tello, Thomas J Blankinship
  • Patent number: 7646674
    Abstract: An acoustic borehole logging system for generation and detection of multipole modes used to determine elastic properties of earth formations characterized as inhomogeneous anisotropic solids. The system concurrently generates and senses monopole, dipole, quadrupole and any higher order pole in the borehole/formation system in order to characterize the elastic properties and stress state of material penetrated by the borehole. Multipole modes of all orders are induced simultaneously without the need for separate transmitter and receiver systems. Performance of the logging system is not compromised due to eccentering of the axis of the tool in the borehole, tool tilt with respect to the axis of the borehole, or mismatch of response sensitivity of multiple receivers within the tool.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: January 12, 2010
    Assignee: Precision Energy Services Ltd.
    Inventors: Elan Yogeswaren, Lucio N. Tello, Thomas J Blankinship
  • Patent number: 7626886
    Abstract: A phased array of transducers is used to generate elastic waves into the earth formation in a selected direction. The impedance measured at the input to the transducer array is indicative of the elastic impedance of the earth formation in the selected direction.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: December 1, 2009
    Assignee: Baker Hughes Incorporated
    Inventors: Vladimir Dubinsky, Xiao Ming Tang, Yibing Zheng, Douglas J. Patterson
  • Patent number: 7529150
    Abstract: An acoustic borehole logging system for generation and detection of multipole modes used to determine elastic properties of earth formations characterized as inhomogeneous anisotropic solids. The system concurrently generates and senses monopole, dipole, quadrupole and any higher order pole in the borehole/formation system in order to characterize the elastic properties and stress state of material penetrated by the borehole. Multipole modes of all orders are induced simultaneously without the need for separate transmitter and receiver systems. Performance of the logging system is not compromised due to eccentering of the axis of the tool in the borehole, tool tilt with respect to the axis of the borehole, or mismatch of response sensitivity of multiple receivers within the tool.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: May 5, 2009
    Assignee: Precision Energy Services, Ltd.
    Inventors: Elan Yogeswaren, Lucio N. Tello, Thomas J. Blankinship
  • Patent number: 7389828
    Abstract: A caliper tool used on a drilling tubular and having extensible members that remain decoupled with respect to the borehole wall during caliper measurements and while the extensible members are extended to allow movement in and through the borehole. A processor processes known and measured information to determine the size and shape of the borehole. Formation evaluation instruments may be included to allow formation evaluation substantially simultaneously with the caliper measurements.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: June 24, 2008
    Assignee: Baker Hughes Incorporated
    Inventors: Rene Ritter, Hans-Christian Freitag, Hans-Juergen Faber, James Kinney
  • Patent number: 7336562
    Abstract: A formation logging tool having a substantially continuous central mandrel with regularly spaced mass blocks disposed thereon, at least some of the mass blocks carrying sensors such as receivers. By adopting this structure, the tool can be made to behave as a mass-spring structure and its flexural and extensional behaviour controlled such that its dispersion curve does not extend into the dispersion curve of the formation to be logged. The structure can be applied to the whole of the logging tool or just to the receiver section and/or any spacer section between the receiver and the transmitter section.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: February 26, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: David Hoyle, Hitoshi Tashiro, Akira Otsuka, Jahir Pabon, Hitoshi Sugiyama