Vertical Receiver Or Source Array Patents (Class 367/57)
  • Patent number: 10577926
    Abstract: A geologic survey system includes a plurality of acoustic sources spaced at intervals over a target area of a terranean surface. Each of the plurality of acoustic sensors is configured to generate a seismic energy wave. The system also includes a plurality of acoustic sensors positioned in a plurality of boreholes formed in a geologic formation, where the boreholes have a depth sufficient to reach a geologic datum. The system also includes a control system communicably coupled to the plurality of acoustic sensors and configured to perform operations including receiving, from the plurality of acoustic sensors, data associated with reflected acoustic signals generated by the plurality of acoustic sources and received by the plurality of acoustic sensors; determining, based on the received data, a subsurface topology of the geologic formation; and generating a subsurface model of the geologic formation based on the determined subsurface topology.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: March 3, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Andrey Bakulin, Pavel Golikov, Ilya Silvestrov
  • Patent number: 10364667
    Abstract: A method can include measuring microseismic activity in a relief wellbore, thereby detecting a microseismic event in an earth formation penetrated by the relief wellbore, and determining a location of an influx into a target wellbore, based on the microseismic event detecting. A microseismic ranging system for use with a subterranean well can include at least one microseismic sensor in a relief wellbore that penetrates an earth formation, with the microseismic sensor detecting a microseismic event in the formation, the microseismic event being caused by an influx into a target wellbore. Another method can include measuring optical scattering in an optical waveguide positioned in a relief wellbore, thereby detecting a microseismic event in an earth formation penetrated by the relief wellbore, and determining a location of an influx into a target wellbore, based on the microseismic event detecting.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: July 30, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Andrew J. Cuthbert, Joseph E. Hess, Carl J. Cramm
  • Patent number: 10324212
    Abstract: Embodiments of the subject technology provide for predicting seismic impedance. The subject technology generates a corridor stack based on vertical seismic profile (VSP) data of a wellbore in a subterranean formation. The subject technology generates an initial estimate of a velocity model for the subterranean formation below the wellbore. The subject technology generating a density model for the subterranean formation below the wellbore based on information from nearby wells. The subject technology inverts, based on a global inversion algorithm and the initial estimate of the velocity model, the generated corridor stack to determine a set of velocity models. The subject technology generates impedance models in a depth domain based on the generated density model and the set of velocity models. Further, the subject technology stores the generated impedance models.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: June 18, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Amit Padhi, Mark Elliott Willis
  • Patent number: 9939537
    Abstract: Techniques, systems and apparatus are described for operating a multimode passive detection system (MMPDS). A multimode passive detection system includes charged particle tracking detectors to measure cosmic ray-based charged particle trajectories in a volume of interest. The multimode passive detection system includes fission product detectors to detect cosmic ray-based charged particle induced fission in a fissile material present in the volume of interest.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: April 10, 2018
    Assignee: Decision Sciences International Corporation
    Inventor: Michael James Sossong
  • Patent number: 9726771
    Abstract: In some embodiments, a time migration diffraction imaging method includes computing a pseudo-depth characterizing a subsurface seismic event by scaling a vertical traveltime using a scaling velocity. A specularity value for a subsurface seismic event is determined according to the pseudo-depth, and a contribution weight for a corresponding seismic trace amplitude is determined according to the specularity value. The specularity value may be determined according to an angle between a traveltime gradient and a normal to a local reflector surface. A diffraction image is generated according to a weighted sum of seismic trace amplitudes. The weighted sum attenuates the contribution of specular events relative to diffraction events.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: August 8, 2017
    Assignee: Z TERRA INC.
    Inventors: Alexander M. Popovici, Ioan Sturzu, Tijmen J. Moser, Iulian F. Musat, Nicolay Tanushev
  • Patent number: 9638029
    Abstract: A communications path between a surface control system and downhole equipment includes a network of wirelessly interconnected communication devices that are located along a conduit. When the communications path fails or cannot be established during performance of a downhole operation, a mobile master communication tool that is in communication with the surface system can be deployed within the wireless range of one of the devices to provide an alternative communication path between the surface system and the downhole equipment. In other embodiments, the alternative communication path can be a temporary path to provide for communications before the network is fully deployed.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: May 2, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Carlos Merino
  • Patent number: 9638818
    Abstract: A technique is designed to facilitate obtaining of acoustic data. The technique comprises traversing a tool through a subterranean formation from a first depth to subsequent depths. The tool receives a seismic signal during predetermined time windows. The seismic signal is generated by a seismic source which is activated at varying times relative to the predetermined time windows based on the depth of the tool.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: May 2, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Neil Kelsall, Mathieu Will, Philip Neville Armstrong, Philippe Lesaffre
  • Patent number: 9551803
    Abstract: Systems and methods for geological medium exploration are provided herein. A method of geological medium exploration may include generating vibrations in a geological medium and recording wave-fields at a surface and in a borehole. Additionally, the method may include obtaining a wave field modification operator and applying the wave-field operator to a full range of seismic data to achieve a spectrally-modified wave field.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: January 24, 2017
    Assignee: Colorado School of Mines
    Inventors: Thomas Leonard Davis, Halina Jedrzejowska-Tyczkowska, Krystyna Zukowska, Irena Irlik
  • Patent number: 9513395
    Abstract: A method for determining positions and origin times of seismic events occurring in the Earth's subsurface includes accepting as input to the method signals recorded from a plurality of seismic sensors deployed above a subsurface volume of interest. The recorded signals are a representation of seismic amplitude with respect to time. Origin time and location of each of a plurality of subsurface seismic events are determined from the recorded signals. The origin times and locations of each event are inverted to obtain Thomsen's parameters in formations in the volume of interest. Depths of each of the events are determined by individually searching the depth of each event, the inversion with each incorporated new depth including updating the Thomsen parameters and setting as a limit a minimum value of RMS error.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: December 6, 2016
    Assignee: Microseismic, Inc.
    Inventors: Yang Zhang, Leo Eisner
  • Patent number: 9482088
    Abstract: A method having obtaining one or more porosity data of a subsurface of the Earth using a data acquisition tool; computing one or more permeability data from the porosity data using a transformation function; computing a first quantile regression function and a second quantile regression function of the one or more permeability data; producing a combined mean regression function of the one or more permeability data by summing the first quantile regression function and the second quantile regression function, wherein the first quantile regression function is multiplied by a first coefficient and the second quantile regression function is multiplied by a second coefficient; and using the combined mean regression function to predict a mean permeability of the subsurface.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: November 1, 2016
    Assignee: Schlumberger Technology Corporation
    Inventor: Sylvain Wlodarczyk
  • Patent number: 9279899
    Abstract: A technique includes estimating propagation parameters that are associated with a towed seismic survey based at least in part on seismic signal measurements and noise measurements.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: March 8, 2016
    Assignee: WesternGeco L.L.C.
    Inventors: Ahmet Kemal Ozdemir, Philippe Caprioli, Ali Ozbek, Johan Olof Anders Robertsson
  • Patent number: 9207344
    Abstract: A method for updating a velocity model of a subsurface of the earth is described herein. A tomographic update to the velocity model of the subsurface may be performed to generate a tomographic velocity model update. A geomechanical velocity model update of the subsurface may be calculated. The geomechanical velocity model update may be combined with the tomographic velocity model update.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: December 8, 2015
    Assignee: WESTERNGECO L.L.C.
    Inventors: Madhumita Sengupta, Ran Bachrach, Konstantin S. Osypov
  • Patent number: 8995224
    Abstract: Techniques for estimating velocity ahead of a drill bit include generating seismic waves at a surface from at least two different source positions in the vicinity of a borehole, receiving seismic waves reflected from a reflector ahead of the drill bit at one or more locations in the borehole, determining travel times of the seismic waves received at the one or more locations in the borehole, and inverting the travel times to determine a velocity of a formation ahead of the drill bit. One embodiment includes transforming the velocity into pore pressure of the formation.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: March 31, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Cengiz Esmersoy, Brian Clark
  • Patent number: 8976625
    Abstract: A zero-offset VSP survey is carried out with spaced apart receivers located in a vertical wellbore. Spectra of the signals at the receivers following wavefield separation are estimated. An absorption coefficient is estimated using differences in spectra between all pairs of receivers.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: March 10, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Emanouil Blias
  • Patent number: 8942064
    Abstract: A system, method and computer-readable medium for acquiring seismic data, which includes activating a seismic source at a surface location; defining a seismic trace of a seismic wave received at a downhole location on a bottomhole assembly in a borehole in response to the activation of the seismic source; compressing the seismic trace; and recording the compressed seismic trace to a storage medium.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: January 27, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Radu Coman, Michael Neubert
  • Patent number: 8913462
    Abstract: Methods and apparatuses are disclosed for generating three dimensional (3D) vertical seismic profiles (VSPs) in a more time efficient manner. The methods and apparatuses enable faster and more efficient VSP surveys than previous techniques. Real-time updating of the velocity model and real-time reflection point density calculations are carried out, which are used to determine the location of the next seismic source firing. In the event the data of a particular bin has an insufficient fold, common image points (CIPs) or reflection point density, additional source firings may be carried out prior to moving the source. Further, in the event the data of a particular bin is excessive in terms of the fold, CIPs or reflection point density before the planned source firings for the bin are completed, remaining source firings for that bin may be skipped to save time and improve the efficiency of the data collection.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: December 16, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: John Richard Tulett, Philip Neville Armstrong, Henry Menkiti
  • Patent number: 8902700
    Abstract: A borehole seismic acquisition system is described with a plurality of sensors arranged so as to identify within the data measured by the pressure sensors P- and S-wave related signals converted at the boundary of the borehole into pressure waves, the sensors being best arranged in groups or clusters sensitive to pressure gradients in one or more directions.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: December 2, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Everhard Johan Muyzert, James Edward Martin, Julian Edward Kragh, Gwénola Claire Marie Michaud
  • Patent number: 8902707
    Abstract: Acoustic signals resulting from microseismic events in the subsurface are received in a first array of detectors deployed in a borehole and in a second array of detectors at or near the surface of the earth. The signals are converted to give the locations of the microseismic events.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: December 2, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Zuolin Chen
  • Patent number: 8854919
    Abstract: A technique includes receiving first seismic data acquired by one or more receivers in response to energy produced by one or more seismic sources interacting with a subsurface feature. The first seismic data is indicative of measured reflection coefficients for image points for the subsurface feature, the measured reflection coefficients are associated with incidence angles, and a range of the incidence angles varies with respect to an image point position. The technique includes processing the first seismic data in a machine to generate second data indicative of a normal incidence reflection coefficient for at least one of the image points not associated with a normal angle of incidence.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: October 7, 2014
    Assignee: WesternGeco L.L.C.
    Inventor: Walter Scott Leaney
  • Publication number: 20140254320
    Abstract: Direct arrivals from walkaway vertical seismic profiling or VSP survey data are used to derive Green's functions representing the seismic wave amplitude and travel time information required to extrapolate the vertical seismic profiling survey data from individual wellbore receivers to the individual source locations. The derived Green's functions are employed in a convolution process with upcoming primary wavefields from the VSP survey data for other surface locations. The derived Green's functions are also used in a correlation process with downgoing wavefields from the VSP survey data to extend lateral coverage of the VSP image. The sets of VSP-CMP gathers so formed are then processed to obtain information about the subsurface formations.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Applicant: Saudi Arabian Oil Company
    Inventors: Bouchaib El Marhfoul, John Cobbina Owusu
  • Patent number: 8750074
    Abstract: A walkaway VSP survey is carried out using a receiver array. First arrivals to a plurality of receivers are picked and used to estimate a normal-moveout (NMO) velocity. Using the NMO velocity and vertical velocities estimated from the VSP data, two anisotropy parameters are estimated for each of the layers. The anisotropy parameters may then be used to process surface seismic data to give a stacked image in true depth and for the interpretation purposes. For multi-azimuthal walkaway or 3D VSP data, we determine two VTI parameters ? and ? for multi-azimuth vertical planes. Then we determine five anisotropic interval parameters that describe P-wave kinematics for orthorhombic layers. These orthorhombic parameters may then be used to process surface seismic data to give a stacked image in true depth and for the interpretation purposes.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: June 10, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Emanouil Blias
  • Publication number: 20140140173
    Abstract: Devices, systems and methods for land seismic. The devices include an above-ground storage tank in which an acoustic energy source is immersed in liquid. The above-ground storage tank may be portable, reusable, self-supporting and may lay flat when empty of liquid and rise on its own when being filled with liquid. The systems include the seismic source-storage tank device, one or more sensors for recording signals that are generated when the source is activated, and a processor for analyzing the recorded signals for geophysical information. The methods involve methods of inducing seismic waves using the seismic source-storage tank devices, and methods of conducting seismic surveys using the seismic source-storage tank devices.
    Type: Application
    Filed: November 18, 2012
    Publication date: May 22, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Mike Clark, Duncan Mackie
  • Patent number: 8720264
    Abstract: Methods and apparatus for reducing the impact of guided (or “tube”) waves in permanently installed seismic systems. By utilizing passive acoustic absorbers, the impact of tube waves may be reduced, leading to improved performance of permanently installed seismic systems that are installed onto production tubing when the well is completed.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: May 13, 2014
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Sverre Knudsen, Paul Travis
  • Publication number: 20140119159
    Abstract: Methods for in-situ reservoir investigation by borehole seismic methods are provided using receiver(s) and a downhole source. The downhole source may be a microseismic event, and may be located relative to the receiver(s) in any configuration. The downhole source may also be a controlled source that is positioned in a reverse vertical seismic profile (RVSP) geometry with respect to the receiver(s). The methods may involve locating the receiver(s) in a first well (which may have any orientation, including vertical or horizontal), and locating the source in a monitoring well (which may have any orientation, including vertical or horizontal), such that the source in the monitoring well is positioned at a greater depth in the formation than the receivers in the first well.
    Type: Application
    Filed: October 26, 2012
    Publication date: May 1, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Joel Herve Le Calvez, Stewart Thomas Taylor
  • Patent number: 8688382
    Abstract: Disclosed is a method for estimating downhole lateral vibrations a drill tubular disposed in a borehole penetrating the earth or a component coupled to the drill tubular. The method includes rotating the drill tubular to drill the first borehole and performing a plurality of measurements in a time window of one or more parameters of the drill tubular at or above a surface of the earth during the rotating using a sensor. The method further includes estimating the downhole lateral vibrations using a processor that receives the plurality of measurements.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: April 1, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Reed W. Spencer
  • Publication number: 20140078864
    Abstract: A system and method obtain a Vertical Seismic Profile (VSP). The system includes a seismic source disposed in a first borehole at a first depth greater than an identified depth of a interface, the seismic source configured to emit seismic waves. The system also includes one or more receptors disposed in a second borehole that includes a target region of interest, the one or more receptors configured to receive direct and reflected components of the seismic waves.
    Type: Application
    Filed: September 17, 2012
    Publication date: March 20, 2014
    Inventor: David Fraga Freitas
  • Patent number: 8659974
    Abstract: According to a preferred aspect of the instant invention, there is provided herein a system and method for imaging complex subsurface geologic structures such as salt dome flanks using VSP data. In the preferred arrangement, a receiver wave field will be downward continued through a salt flood model and a source wave field will be upward continued through a sediment flood model until they “meet” at the subsurface locations of the VSP receivers. The source and receiver wave fields will be cross correlated as an imaging condition at each depth interval.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: February 25, 2014
    Assignee: BP Corporation North America Inc.
    Inventors: Mark A. Roberts, Brian E. Hornby
  • Patent number: 8605544
    Abstract: A system for monitoring seismicity during fluid injection at or near a hydrocarbon reservoir comprising: a first set of seismic sensors for deployment at a site for collecting seismic data; a second set of seismic sensors for sub-surface deployment at the site at a depth lower than the first set of seismic sensors for collecting seismic data, the first set of seismic sensors having a lower frequency response than that of the second set of seismic sensors; and a data collection system in communication with the first and second set of sensors.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: December 10, 2013
    Assignee: ESG Solutions Inc.
    Inventors: Adam Mirza Baig, Theodore Ivan Urbancic
  • Patent number: 8576663
    Abstract: A method for seismic inversion of vertical seismic profile (VSP) data in an oilfield. The method includes obtaining an initial velocity model of a subterranean formation including acoustic velocities of wave propagation in proximity to the wellbore, determining an acquisition geometry for obtaining the VSP data including receiver locations within the wellbore and a source location, performing a seismic survey to obtain the VSP data based on the acquisition geometry, analyzing arrival signals of the VSP data to generate transit time data for wave propagation from the source location to the receiver locations, modifying the initial velocity model to generate an updated velocity model by performing a tomographic inversion of the transit time data, generating an elastic model of the subterranean formation by performing the seismic inversion of the VSP data using the updated velocity model, and adjusting the operations of the oilfield based on the elastic model.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: November 5, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Jan van de Mortel, Jacob Thymann Nielsen, Maria Gabriela D'Aubeterre Reyes, Andrew Ronald Ross
  • Publication number: 20130250725
    Abstract: A method and a retrievable vertical geophone cable for collecting seismic data underground. The retrievable vertical geophone cable includes an envelope having a first end at which a connector mechanism is provided to close the envelope; plural geophones distributed inside the envelope at predetermined positions; and a first expansion mechanism attached to a geophone of the plural geophones and configured to expand the envelope when actuated with a first fluid under pressure.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 26, 2013
    Applicant: CGGVERITAS SERVICES SA
    Inventor: Julien MEUNIER
  • Publication number: 20130250724
    Abstract: Method and retrievable vertical hydrophone cable for collecting seismic data underground. The retrievable vertical hydrophone cable includes an envelope having a first end at which a connector mechanism is provided to close the envelope; plural hydrophones distributed inside the envelope at predetermined positions; and a fluid provided inside the envelope and around the plural hydrophones. The envelope increases its volume when the fluid is pressurized through the connector mechanism.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 26, 2013
    Applicant: CGGVERITAS SERVICES SA
    Inventor: Julien MEUNIER
  • Patent number: 8531914
    Abstract: A method of imaging a target area of the subsoil from “walkaway” data having application to development of oil reservoirs or monitoring of geologic storage sites is disclosed. After acquisition of seismic data of walkaway type and estimation of the rate of propagation of the seismic waves in the subsoil, p illumination angles are selected. The seismic measurements are then converted to data Dp by illumination angle. The distribution of acoustic impedances best explaining data Dp is determined within the target by using a non-linear inversion which minimizes a difference between the data Dp obtained from measurements and data by illumination angle resulting from an estimation. This estimation is performed by solving a wave propagation equation from the velocity field, an acoustic impedance distribution and a pressure distribution at the level of the top of the target for each illumination angle.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: September 10, 2013
    Assignee: IFP
    Inventors: Florence Delpart-Jannaud, Patrick Lailly, Ludovic Metivier
  • Patent number: 8457899
    Abstract: A method of calculating a seismic noise image for a formation comprises the steps of: a) obtaining data representing a multicomponent seismic signal from at least one receiver, in response to transmitting seismic waves into the formation; b) obtaining a velocity model of the earth formation; c) determining a plurality of wave field components; d) obtaining a set of second components; e) obtaining, for each subsurface point, at least two products, each product comprising the product of a selected wave field component and a different second component; and f) and generating a noise image by calculating at least one difference between different products for at least one image point.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: June 4, 2013
    Assignee: Shell Oil Company
    Inventors: Denis Kiyashchenko, William Alexander Mulder
  • Patent number: 8428880
    Abstract: A method of processing data obtained from seismic prospecting of an earth formation, comprises obtaining data representing a multicomponent seismic signal from a multicomponent seismic receiver at a receiver location in an earth formation, in response to transmitting seismic waves into the earth formation; performing a wave-equation migration of the multicomponent seismic signal to obtain a seismic image of the earth formation, wherein the polarization of the seismic wave at the receiver location is taken into account and wherein a seismic image value at a point in the earth formation is calculated from a sum of products of a source field component for a particular dimension and a complex conjugated back propagated wave field component for the same dimension, summed over a plurality of dimensions.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: April 23, 2013
    Assignee: Shell Oil Company
    Inventors: Denis Kiyashchenko, William Alexander Mulder
  • Patent number: 8395967
    Abstract: A walkaway VSP survey is carried out with receivers located in a borehole under a salt overhang. Redatuming of the multicomponent data to virtual sources in the borehole followed by vector Kirchhoff migration using a simple velocity model provides an accurate image of the salt face.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: March 12, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Min Lou, Francis D. Doherty, James C. Jackson
  • Patent number: 8345509
    Abstract: In some aspects of the disclosure, a method for creating three-dimensional images of non-linear properties and the compressional to shear velocity ratio in a region remote from a borehole using a conveyed logging tool is disclosed.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: January 1, 2013
    Assignees: Chevron U.S.A., Inc., Los Alamos National Security
    Inventors: Cung Vu, Kurt T. Nihei, Denis P. Schmitt, Christopher Skelt, Paul A. Johnson, Robert Guyer, James A. TenCate, Pierre-Yves Le Bas
  • Patent number: 8238195
    Abstract: An apparatus and a method for processing of three components, 3-Dimensions seismic (3-C, 3-D) data acquired by down-hole receivers and surface seismic sources. Automatic velocity analysis is used to identify the velocities of dominant events in a VSP panel. Different wave-types (downgoing P, downgoing PS, upcoming PS and upcoming PP) are identified and sequentially removed.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: August 7, 2012
    Assignee: Baker Hughes Incorporated
    Inventor: Emanouil Blias
  • Patent number: 8208341
    Abstract: Methods and related systems are described for processing surface seismic data. Surface seismic data representing seismic signals detected at a plurality of surface locations is wavefield deconvolved using a combination of direct wave travel times estimated from borehole seismic data, and wavefield energy estimated from the surface seismic data.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: June 26, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Jakob Brandt Utne Haldorsen, Scott W. Leaney, Douglas E. Miller, Richard Timothy Coates
  • Publication number: 20120092959
    Abstract: A technique includes determining a magnitude and frequency distribution of seismic events attributable to hydraulic fracturing in a given stage of a well. The technique includes based on the determined magnitude and frequency distribution, predicting at least one additional magnitude and frequency distribution of seismic events attributable to hydraulic fracturing in at least one additional stage of the well. The technique includes determining at least one seismic property of a system of hydraulic fractures based at least in part on the determined additional magnitude and frequency distributions.
    Type: Application
    Filed: October 18, 2010
    Publication date: April 19, 2012
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Stewart Thomas TAYLOR, Joel Herve LE CALVEZ
  • Patent number: 8154951
    Abstract: A method is disclosed for more accurately determining the relative bearing angle of a directional receiver in a borehole using an existing three-dimensional (3D) geological model, one or more seismic sources and a three component (3C) directional receiver. A disclosed method includes: receiving direct compressional arrivals generated by multiple source events at the directional receiver disposed in the borehole; rotating the seismic data into the true earth frame using an estimated relative bearing angle; measuring a polarization vector of the rotated seismic data; estimating an incident ray vector of the direct compressional arrivals at the directional receiver using ray-tracing through the 3D model; calculating the weighted sum of an angular difference between the polarization vector and the incident ray vector; and adjusting the estimated relative bearing angle until the angular difference between the polarization and incident ray vectors is minimized.
    Type: Grant
    Filed: March 8, 2009
    Date of Patent: April 10, 2012
    Assignee: Schlumberger Technology Corporation
    Inventor: Philip Neville Armstrong
  • Publication number: 20120026831
    Abstract: A logging system for measuring anisotrophic properties of the materials penetrated by a borehole. A downhole or “logging tool” element of the system comprises a source section that comprises either a unipole or a dipole acoustic source. The receiver section comprises a plurality of receiver stations disposed at different axial spacings from the acoustic source. Each receiver station comprises one or more acoustic receivers. The system requires that the source and receiver sections rotate synchronously as the logging tool is conveyed along the borehole. Receiver responses are measured in a plurality of azimuthal angle segments and processed as a function of rotation angle of the tool. The logging system can be embodied as a logging-while-drilling system, a measurement-while-drilling system, and a wireline system that synchronously rotates source and receiver sections. All embodiments require that the acoustic source operate at a relatively high frequency.
    Type: Application
    Filed: August 2, 2010
    Publication date: February 2, 2012
    Applicant: PRECISION ENERGY SERVICES, INC.
    Inventor: Medhat W. Mickael
  • Patent number: 8077546
    Abstract: A method for monitoring a multi-layered system below a surface comprising a slow layer and a fast layer; the method comprising: transmitting one or more seismic waves from one or more seismic sources through the multi-layered system; receiving signals emanating from the multi-layered system in response to the one or more seismic waves with one or more receivers located a distance from the one or more seismic sources; identifying one or more critically refracted compressional (CRC) waves amongst the signals; and inferring information about a change in the slow layer based on the one or more CRC waves; wherein the CRC wave is a refracted wave which has traveled along an interface between the fast layer and an adjacent layer.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: December 13, 2011
    Assignee: Shell Oil Company
    Inventors: Fredrik Hansteen, Peter Berkeley Wills
  • Publication number: 20110267921
    Abstract: A method for seismic inversion of vertical seismic profile (VSP) data in an oilfield. The method includes obtaining an initial velocity model of a subterranean formation including acoustic velocities of wave propagation in proximity to the wellbore, determining an acquisition geometry for obtaining the VSP data including receiver locations within the wellbore and a source location, performing a seismic survey to obtain the VSP data based on the acquisition geometry, analyzing arrival signals of the VSP data to generate transit time data for wave propagation from the source location to the receiver locations, modifying the initial velocity model to generate an updated velocity model by performing a tomographic inversion of the transit time data, generating an elastic model of the subterranean formation by performing the seismic inversion of the VSP data using the updated velocity model, and adjusting the operations of the oilfield based on the elastic model.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 3, 2011
    Applicant: Schlumberger Technology Corporation
    Inventors: Jan van de Mortel, Jacob Thymann Nielsen, Maria Gabriela D'Aubeterre Reyes, Andrew Ronald Ross
  • Patent number: 8009510
    Abstract: Methods and related systems are described making seismic measurements. Seismic energy is transmitted into the earth using a surface seismic source. The seismic energy is received with one or more downhole receivers located in a borehole. In response to the received seismic energy from the surface seismic source, seismic energy is transmitted into the earth using a downhole seismic source. The seismic energy from the downhole seismic source is then received with one or more surface receivers located on the surface of the earth. A delay interval is measured downhole between the first arrival of the seismic energy from the surface seismic source and the transmission from the downhole seismic source. A surface interval is measured between the transmitting of seismic energy from the surface seismic source and first arrival of the seismic energy from the downhole seismic source using the one or more surface receivers. Travel time can be calculated by subtracting the delay interval from the surface interval.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: August 30, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Chung Chang
  • Publication number: 20110158049
    Abstract: Seismic data recorded by subsurface seismic sensors placed in a borehole, such as an oil or gas well, are transformed via a process of upward wavefield propagation to pseudo-receivers at the surface of the earth. The seismic data thus transformed can be processed as though the data had been recorded by the pseudo-receivers at the surface rather than in the borehole where the data were actually recorded. This method accurately accounts for seismic source statics, anisotropy, and all velocity effects between the real receivers in the borehole and the pseudo-receivers at the surface of the earth.
    Type: Application
    Filed: June 29, 2010
    Publication date: June 30, 2011
    Inventors: Brian Nelson Fuller, John Marcus Sterling
  • Publication number: 20110149685
    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: Application
    Filed: December 22, 2009
    Publication date: June 23, 2011
    Inventor: Michael E. Kalinski
  • Patent number: 7952960
    Abstract: The methods described herein are conceptually similar to classical migration/imaging for surface seismic data. However, instead of using computed (estimated) Green's functions in the imaging process, the instant invention utilizes measured (near-exact) Green's functions from VSP data to image the surface seismic data. Although the instant invention is best utilized where the velocity profile is approximately 1D (i.e., v(z)), the methods disclosed herein can also be extended to instances where there are some lateral velocity variations. Under these conditions, the instant invention allows for imaging surface seismic data and ‘self-imaging’ VSP data without first having to estimate a velocity model. The measurements obtained from the VSP data can also be used as a tool for calibrating computed Green's functions and migration operators.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: May 31, 2011
    Assignee: BP Corporation North America Inc.
    Inventors: Sverre Brandsberg-Dahl, Brian E. Hornby
  • Patent number: 7940192
    Abstract: Channel estimation and signal equalization is used in a mud-pulse telemetry system for uplink communication during drilling of wellbores.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: May 10, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Hanno Reckmann, Ingolf Wassermann
  • Patent number: 7911878
    Abstract: A walkaway VSP survey is carried out with receivers located in a borehole near the base salt. Reflection tomographic inversion of data from the walkaway VSP is used to derive a velocity model for the subsurface and may be used for imaging of sub-salt reflections.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: March 22, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Xiaomin Zhao, Min Lou, James C. Jackson
  • Publication number: 20100296367
    Abstract: A method of imaging a target area of the subsoil from “walkaway” data having application to development of oil reservoirs or monitoring of geologic storage sites is disclosed. After acquisition of seismic data of walkaway type and estimation of the rate of propagation of the seismic waves in the subsoil, p illumination angles are selected. The seismic measurements are then converted to data Dp by illumination angle. The distribution of acoustic impedances best explaining data Dp is determined within the target by using a non-linear inversion which minimizes a difference between the data Dp obtained from measurements and data by illumination angle resulting from an estimation. This estimation is performed by solving a wave propagation equation from the velocity field, an acoustic impedance distribution and a pressure distribution at the level of the top of the target for each illumination angle.
    Type: Application
    Filed: May 14, 2010
    Publication date: November 25, 2010
    Inventors: Florence DELPRAT-JANNAUD, Patrick Lailly, Ludovic Metivier