Patents by Inventor Johan O. A. Robertsson
Johan O. A. Robertsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10353100Abstract: A technique includes receiving first data acquired by at least a particle motion gradient sensor or a rotation sensor of a streamer that is subject to vibration due to towing of the streamer; and receiving second data acquired by at least one particle motion sensor of the streamer and being indicative of particle motion and vibration noise. The technique includes processing the second data in a processor-based machine to, based at least in part on the first data, attenuate the vibration noise indicated by the second data to generate third data indicative of the particle motion.Type: GrantFiled: March 21, 2013Date of Patent: July 16, 2019Assignee: WESTERNGECO L.L.C.Inventors: Nicolas Goujon, Johan O. A. Robertsson, Ahmet Kemal Ozdemir
-
Patent number: 9658353Abstract: A technique includes receiving data indicative of a wavefield in a processor-based system and processing the data on the processor-based system to generate a modeled wavefield. The processing includes varying boundary conditions of the modeled wavefield with respect to time to regulate coherent boundary reflections in the modeled wavefield.Type: GrantFiled: June 17, 2010Date of Patent: May 23, 2017Assignee: WESTERNGECO L.L.C.Inventors: Johan O. A. Robertsson, Robin Fletcher
-
Patent number: 9594178Abstract: The technologies described herein include systems and methods for performing a first seismic survey and performing a second seismic survey after a predetermined amount of time has lapsed between the first seismic survey and the second seismic survey. The shot times and the shot positions of the second seismic survey may be substantially the same as the shot times and the shot positions of the first seismic survey. After performing the seismic surveys, seismic data generated by the first seismic survey may be processed to generate a first image, and seismic data generated by the second seismic survey may be processed to generate a second image. After generating the first and second images, a difference between the first image and the second image may be computed to generate a time lapse difference image.Type: GrantFiled: May 8, 2014Date of Patent: March 14, 2017Assignee: WESTERNGECO L.L.C.Inventors: Johan O. A. Robertsson, Dirk-Jan Van Manen, David Fraser Halliday, Robert Montgomery Laws
-
Patent number: 9513391Abstract: To acquire near-zero offset survey data, a survey source and a first streamer attached to the survey source are provided, where the first streamer has at least one survey receiver. A second streamer separate from the survey source and the first streamer includes survey receivers. Near-zero offset data is measured using the at least one survey receiver of the first streamer.Type: GrantFiled: June 17, 2013Date of Patent: December 6, 2016Assignee: WESTERNGECO L. L. C.Inventors: Henk Keers, Aslaug Stroemmen Melboe, Jon-Fredrik Hopperstad, Johan O. A. Robertsson, Julian Edward Kragh, Morten Svendsen, Luren Yang, Svein Arne Frivik
-
Patent number: 9297923Abstract: A technique facilitates collection and use of data on subterranean formations. The technique comprises obtaining gravity measurements through the use of seismic streamers. At least one streamer is provided such that each streamer has multiple sensors, e.g. accelerometers. The at least one streamer is towed with a tow vessel, and gravity data are accumulated via the multiple sensors during towing.Type: GrantFiled: November 3, 2010Date of Patent: March 29, 2016Assignee: WESTERNGECO L.L.C.Inventors: Everhard Muyzert, Philip A. F. Christie, Nicolas Goujon, Julian Edward (Ed) Kragh, Johan O. A. Robertsson
-
Patent number: 9182512Abstract: A technique includes receiving first data indicative of a pressure measurement and measurements of components of a particle motion vector acquired by sensors disposed on at least one cable; and processing the first data to generate second data indicative of a constructed an in-line component of the particle motion vector. The technique includes processing the first and second data in a geophysical processing operation that relies on at least three components of the particle motion vector.Type: GrantFiled: October 26, 2011Date of Patent: November 10, 2015Assignee: WESTERNGECO L.L.C.Inventors: Nicolas Goujon, Ahmet Kemal Ozdemir, Oeyvind Teigen, Johan O. A. Robertsson
-
Patent number: 9075163Abstract: Implementations of various technologies for a method for generating a seismic image of a subsurface are described herein. Seismic data may be received from two sensors in a seismic survey. The seismic data below and equal to a predetermined frequency may be classified as low-frequency seismic data. The low-frequency seismic data may be re-sampled based on the predetermined frequency. A set of low-frequency Green's functions may be calculated using interferometry on the re-sampled low-frequency seismic data. High-frequency seismic data of the seismic data may be processed to create a set of high-frequency Green's functions at one or more source locations of the seismic survey. The set of high-frequency Green's functions may be merged with the set of low-frequency Green's functions to create a set of broad-band Green's functions. The seismic image may be generated using the set of broad-band Green's functions at the source locations.Type: GrantFiled: April 17, 2009Date of Patent: July 7, 2015Assignee: WESTERNGECO L.L.C.Inventors: Johan O. A. Robertsson, James Rickett
-
Patent number: 8942061Abstract: A seismic streamer system for acquiring seismic data includes a plurality of first cable sections each employing a first sensor configuration therein, and at least one second cable section operatively connected to one or more of the first cable sections and employing a second sensor configuration therein. In various embodiments of the streamer system, one or more of the second cable sections are sparsely integrated into a streamer, a streamer array and/or a seismic spread. The first sensor configuration may, e.g., include a conventional hydrophone distribution, and the second sensor configuration may, e.g., include multicomponent sensors such as at least one of a particle velocity sensor, a pressure gradient sensor, an accelerometer and a combination thereof. The present invention is useful for attenuating noise in the measured seismic data as well as deghosting the data.Type: GrantFiled: July 2, 2013Date of Patent: January 27, 2015Assignee: WesternGeco L.L.C.Inventors: Roshitashva Singh, Johan O. A. Robertsson, Ottar Kristiansen
-
Publication number: 20140321239Abstract: The technologies described herein include systems and methods for performing a first seismic survey and performing a second seismic survey after a predetermined amount of time has lapsed between the first seismic survey and the second seismic survey. The shot times and the shot positions of the second seismic survey may be substantially the same as the shot times and the shot positions of the first seismic survey. After performing the seismic surveys, seismic data generated by the first seismic survey may be processed to generate a first image, and seismic data generated by the second seismic survey may be processed to generate a second image. After generating the first and second images, a difference between the first image and the second image may be computed to generate a time lapse difference image.Type: ApplicationFiled: May 8, 2014Publication date: October 30, 2014Applicant: WESTERNGECO L.L.C.Inventors: Johan O. A. ROBERTSSON, Dirk-Jan VAN MANEN, David Fraser HALLIDAY, Robert Montgomery LAWS
-
Publication number: 20140286127Abstract: A technique includes receiving first data acquired by at least a particle motion gradient sensor or a rotation sensor of a streamer that is subject to vibration due to towing of the streamer; and receiving second data acquired by at least one particle motion sensor of the streamer and being indicative of particle motion and vibration noise. The technique includes processing the second data in a processor-based machine to, based at least in part on the first data, attenuate the vibration noise indicated by the second data to generate third data indicative of the particle motion.Type: ApplicationFiled: March 21, 2013Publication date: September 25, 2014Applicant: WESTERNGECO L.L.C.Inventors: NICOLAS GOUJON, JOHAN O.A. ROBERTSSON, AHMET KEMAL OZDEMIR
-
Publication number: 20140244177Abstract: In a first aspect, a method for use in a time lapse, marine seismic survey includes accessing a set of acquired, multicomponent seismic data; and interpolating a set of time lapse seismic data from the acquired seismic data. In other aspects, a program storage medium is encoded with instructions that, when executed by a computing device, perform the above method and a computing apparatus programmed to perform one or more of such methods.Type: ApplicationFiled: May 5, 2014Publication date: August 28, 2014Applicant: WESTERNGECO L.L.C.Inventor: JOHAN O. A. ROBERTSSON
-
Publication number: 20140244179Abstract: A data set can be corrected for the effects of interface waves by interferometrically measuring an interface wavefield between each of a plurality of planned locations within a survey area; and correcting survey data acquired in the survey area for the interface waves. The interface wavefield may be interferometrically measured by receiving a wavefield including interface waves propagating within a survey area, the survey area including a plurality of planned survey locations therein; generating interface wave data representative of the received interface wavefield; and constructing a Green's function between each of the planned survey positions from the interface wave data. Other aspects include an apparatus by which the interface wavefield may be interferometrically measured and a computer apparatus programmed to correct the seismic data using the interferometrically measured interface wave data.Type: ApplicationFiled: May 8, 2014Publication date: August 28, 2014Applicant: WESTERNGECO L.L.C.Inventors: DIRK-JAN VAN MANEN, JOHAN O. A. ROBERTSSON, ANDREW CURTIS
-
Publication number: 20140192620Abstract: To perform noise attenuation for seismic surveying, a sensor assembly is deployed on a ground surface, where the sensor assembly has a seismic sensor to measure seismic waves propagated through a subterranean structure, and a divergence sensor comprising a pressure sensor to measure noise. First data is received from the seismic sensor, and second data is received from the divergence sensor. The first data and the second data are combined to attenuate noise in the first data.Type: ApplicationFiled: March 10, 2014Publication date: July 10, 2014Applicant: WESTERNGECO L.L.C.Inventors: PASCAL EDME, EVERHARD MUIJZERT, JULIAN EDWARD KRAGH, JOHAN O. A. ROBERTSSON, QUINGLIN LIU
-
Publication number: 20140160887Abstract: In a first aspect, a method for use in a time lapse, marine seismic survey includes accessing a set of acquired, multicomponent seismic data; and interpolating a set of time lapse seismic data from the acquired seismic data. In other aspects, a program storage medium is encoded with instructions that, when executed by a computing device, perform the above method and a computing apparatus programmed to perform one or more of such methods.Type: ApplicationFiled: February 18, 2014Publication date: June 12, 2014Applicant: WESTERNGECO L.L.C.Inventor: JOHAN O. A. ROBERTSSON
-
Patent number: 8750073Abstract: The technologies described herein include systems and methods for performing a first seismic survey and performing a second seismic survey after a predetermined amount of time has lapsed between the first seismic survey and the second seismic survey. The shot times and the shot positions of the second seismic survey may be substantially the same as the shot times and the shot positions of the first seismic survey. After performing the seismic surveys, seismic data generated by the first seismic survey may be processed to generate a first image, and seismic data generated by the second seismic survey may be processed to generate a second image. After generating the first and second images, a difference between the first image and the second image may be computed to generate a time lapse difference image.Type: GrantFiled: December 10, 2012Date of Patent: June 10, 2014Assignee: WesternGeco L.L.C.Inventors: Johan O. A. Robertsson, Dirk-Jan van Manen, David Fraser Halliday, Robert Montgomery Laws
-
Patent number: 8712694Abstract: To perform noise attenuation for seismic surveying, a sensor assembly is deployed on a ground surface, where the sensor assembly has a seismic sensor to measure seismic waves propagated through a subterranean structure, and a divergence sensor comprising a pressure sensor to measure noise. First data is received from the seismic sensor, and second data is received from the divergence sensor. The first data and the second data are combined to attenuate noise in the first data.Type: GrantFiled: October 5, 2009Date of Patent: April 29, 2014Assignee: WesternGeco L.L.C.Inventors: Pascal Edme, Everhard Muyzert, Julian Edward (Ed) Kragh, Johan O. A. Robertsson, Qinglin Liu
-
Publication number: 20130294195Abstract: A seismic streamer system for acquiring seismic data includes a plurality of first cable sections each employing a first sensor configuration therein, and at least one second cable section operatively connected to one or more of the first cable sections and employing a second sensor configuration therein. In various embodiments of the streamer system, one or more of the second cable sections are sparsely integrated into a streamer, a streamer array and/or a seismic spread. The first sensor configuration may, e.g., include a conventional hydrophone distribution, and the second sensor configuration may, e.g., include multicomponent sensors such as at least one of a particle velocity sensor, a pressure gradient sensor, an accelerometer and a combination thereof. The present invention is useful for attenuating noise in the measured seismic data as well as deghosting the data.Type: ApplicationFiled: July 2, 2013Publication date: November 7, 2013Inventors: ROHITASHVA SINGH, JOHAN O.A. ROBERTSSON, OTTAR KRISTIANSEN
-
Publication number: 20130279291Abstract: To acquire near-zero offset survey data, a survey source and a first streamer attached to the survey source are provided, where the first streamer has at least one survey receiver. A second streamer separate from the survey source and the first streamer includes survey receivers. Near-zero offset data is measured using the at least one survey receiver of the first streamer.Type: ApplicationFiled: June 17, 2013Publication date: October 24, 2013Inventors: HENK KEERS, ASLAUG STROEMMEN MELBOE, JON-FREDRIK HOPPERSTAD, JOHAN O.A. ROBERTSSON, JULIAN EDWARD KRAGH, MORTEN SVENDSEN, LUREN YANG, SVEIN ARNE FRIVIK
-
Patent number: 8477561Abstract: A seismic streamer system for acquiring seismic data includes a plurality of first cable sections each employing a first sensor configuration therein, and at least one second cable section operatively connected to one or more of the first cable sections and employing a second sensor configuration therein. In various embodiments of the streamer system, one or more of the second cable sections are sparsely integrated into a streamer, a streamer array, and/or a seismic spread. The first sensor configuration may, e.g., include a conventional hydrophone distribution, and the second sensor configuration may, e.g., include multicomponent sensors such as at least one of a particle velocity sensor, a pressure gradient sensor, an accelerometer, and a combination thereof. The present invention is useful for attenuating noise in the measured seismic data as well as deghosting the data.Type: GrantFiled: April 26, 2005Date of Patent: July 2, 2013Assignee: WesternGeco L.L.C.Inventors: Rohitashva Singh, Johan O. A. Robertsson, Ottar Kristiansen
-
Patent number: 8467264Abstract: To acquire near-zero offset survey data, a survey source and a first streamer attached to the survey source are provided, where the first streamer has at least one survey receiver. A second streamer separate from the survey source and the first streamer includes survey receivers. Near-zero offset data is measured using the at least one survey receiver of the first streamer.Type: GrantFiled: June 3, 2008Date of Patent: June 18, 2013Assignee: WesternGeco L.L.C.Inventors: Henk Keers, Aslaug Stroemmen Melboe, Jon-Fredrik Hopperstad, Johan O. A. Robertsson, Ed Kragh, Morten Svendsen, Luren Yang, Svein Arne Frivik