31
Svein T Vaage, Jacob T Fokkema, Peter M van den Berg: Method for seismic exploration utilizing motion sensor and pressure sensor data. PGS Americas, E Eugene Thigpen, Charles R Schweppe, October 17, 2006: US07123543 (32 worldwide citation)

A method is disclosed for deghosting seismic data. The data include measurements of a vertical component of particle motion and pressure. The measurements are substantially collocated and made at a plurality of spaced apart positions. The method includes transforming the data into the spatial freque ...


32
Stig Rune Lennart Tenghamn, Ulf Peter Lindqvist: Electrode structure and streamer made therewith for marine electromagnetic surveying. PGS Geopysical, E Eugene Thigpen, Richard A Fagin, November 4, 2008: US07446535 (32 worldwide citation)

An electromagnetic sensor cable includes at least one strength member configured to be coupled to a vessel for towing in a body of water and extending along the length of the cable. A jacket covers the strength member and extends along the length of the cable. At least one electrode mounting sleeve ...


33
Stig Rune Lennart Tenghamn: Apparatus for steering a marine seismic streamer via controlled bending. PGS Americas, E Eugene Thigpen, Charles R Schweppe, January 23, 2007: US07167412 (31 worldwide citation)

A marine seismic streamer steering device comprises at least two hinged sections pivotally coupled to each other and connected between two adjacent sections of the seismic streamer, and a bend control unit that controls bending of the hinged sections relative to the longitudinal axis of the seismic ...


34
William T Ilfrey, William W Todd, Richard A Warriner: Self-supported drilling riser. Exxon Production Research Company, E Eugene Thigpen, December 28, 1976: US03999617 (31 worldwide citation)

Apparatus and method for drilling a well into a submerged bottom from a floating drilling vessel while employing a riser pipe having positive buoyancy is disclosed. The riser pipe extends between the vessel and the well and is comprised of an upper and a lower section. Means are connected to the low ...


35
M Turhan Taner, Matthew B Carr: System for utilizing seismic data to estimate subsurface lithology. E Eugene Thigpen, Richard A Fagin, October 18, 2005: US06957146 (30 worldwide citation)

A method of geophysical exploration of a subsurface region of interest which utilizes an unsupervised learning network to organize seismic data representing a subsurface region of interest. A portion of the organized seismic data is correlated with lithological data from a well bore located in said ...


36
Stig Rune Lennart Tenghamn, Eivind Fromyr, Marit Ronaess, Rune Johan Magnus Mattsson, Ulf Peter Lindqvist, Lena Kristina Frenje Lund, Anders Göran Mattsson, Toril Margrethe Bruun Vaage: Receiver streamer system and method for marine electromagnetic surveying. PGS Geophysical, E Eugene Thigpen, Shannon Powers, Richard A Fagin, November 16, 2010: US07834632 (30 worldwide citation)

A receiver streamer system for marine electromagnetic surveying includes a first streamer, and a second streamer disposed substantially parallel to and spaced apart from the first streamer. A first pair of electrodes is associated with the first streamer and a second pair of electrodes is associated ...


37
David L Freeman, Mark G Rockley, Donald G Harville: Method for quantitative analysis of core samples. Western Atlas International, Robert E Lowe, E Eugene Thigpen, Barry C Kane, June 13, 1989: US04839516 (29 worldwide citation)

A method for quantitative mineral analysis of core samples obtained from oil and gas wells is disclosed. The method includes the steps of grinding the sample to very small particle size and combining the sample with a carrier material such as KBr to form a pellet. The pellet is observed in a Fourier ...


38
Stig Rune Lennart Tenghamn: PGS Geophysical, E Eugene Thigpen, June 23, 2009: US07551518 (28 worldwide citation)

A marine vibrator that in a particular embodiment includes a substantially elliptically shaped outer shell, a driver having a first and second end, at least one outer spring connected between the first end and the second end of the driver, and at least one inner spring connected between the first en ...


39
John T Evans, Richard J Kostelnicek: Offset removal in an analog to digital conversion system. Exxon Production Research Co, E Eugene Thigpen, May 20, 1986: US04590458 (28 worldwide citation)

The invention is a system for reducing offset in an analog to digital conversion system. A signal representing the system offset is stored in digital form. A digital to analog converter generates an analog feedback signal in response to the stored digital signal. The output of the system analog to d ...


40
Ruben D Martinez: Weighted slant stack for attenuating seismic noise. PGS Americas, E Eugene Thigpen, June 3, 2003: US06574567 (28 worldwide citation)

A method and apparatus are disclosed for attenuating noise in seismic data including a plurality of input traces. The method includes transforming the seismic data from the space-time domain into the slant-stack domain. Seismic data having a preselected characteristic is excluded when the transformi ...