1
Alam Aftab, Manzur Akkas: Simultaneous vertical-seismic profiling and surface seismic acquisition method.. Western Atlas Int, December 20, 1989: EP0347019-A2 (22 worldwide citation)

An inventive method for simultaneously collecting depth-of-focus vertical seismic profiling (VSP) data and three-dimensional surface seismic data is disclosed. At least one seismic sensor (26) is deployed at a predetermined depth of a borehole (16) and raised in increments determined by the survey. ...


2
Dragoset William H Jr: Method of attenuating coherent noise in marine seismic data.. Western Atlas Int, November 8, 1995: EP0681193-A1 (22 worldwide citation)

A method of attenuating coherent environmental noise from a multitrace digitized seismic recording adaptively creates a filter for that attenuation. The method uses the presence, on the recording, of a limited sample of pure noise that is uncontaminated by desired signal. The pure noise sample is us ...


3
Taicher Gersh Zvi, Reiderman Arcady: Nmr well logging tool suitable for measurement-while-drilling (mwd). Western Atlas Int, August 27, 1997: GB2310500-A (20 worldwide citation)

A permanent magnet 24 produces a static magnetic field B 0 in a sensing volume 28 in the earth formation, the field being substantially rotationally symmetric and perpendicular to the axis 32, and the sensing volume 28 having a significant axial length. The RF coil 30 has turns in planes transverse ...


4
Yesudas Michael, Michaels John M, Rafie Saeed, Shwe Than: Determining properties of fluids sampled from earth formations using an electric wireline testing tool. Western Atlas Int, March 26, 1997: GB2304906-A (19 worldwide citation)

Properties of earth formation fluids viz the amount of dissolved gas (bubble point), compressibility, viscosity and phase composition, are determined using a bi-directional, hydraulically-operated pump 24 having two pump chambers 50,52. Dissolved gas is determined by hydraulically confining and expa ...


5
Dumestre Iii Alex C: Latching mechanism.. Western Atlas Int, October 10, 1990: EP0390987-A1 (18 worldwide citation)

A latching mechanism used to couple external devices (14) to marine seismic streamer cables (12) is disclosed. The latching device universally couples to collars (18) predominantly used in the seismic industry. A mounting bracket (40) or shank is provided which is coupled to the external device (14) ...


6
Workman Ricky L, Chambers Ronald E: Marine seismic streamers. Western Atlas Int, July 1, 1998: GB2320706-A (17 worldwide citation)

A method for controlling the position and shape of marine seismic streamer cables (13), whereby a plurality of real time signals from a marine seismic data acquisition system (05) and a plurality of threshold parameters from an input device are received. The real time signals are compared to the thr ...


7
Reinhardt Paul A: Advancing downhole tools using shape memory material. Western Atlas Int, August 11, 1999: GB2334046-A (15 worldwide citation)

An apparatus for transporting a downhole tool (10) in a borehole (12, fig. 2) comprises a shape memory material (20) which is activated by a heater (22, fig. 3) to extend arms (16) to engage the borehole and advance the tool through the borehole. After the tool has been advanced in the borehole the ...


8
Ha Stephen T, Reuter Fritz Werner, Lopez Josephine: Optic fibre wellbore logging cable. Western Atlas Int, May 15, 2002: GB2368921-A (14 worldwide citation)

A wellbore cable has one or more fiber optic fibers 120, optionally with one or more fiber Bragg gratings thereon or therein, and has a hollow metal tube 118 through which extends loosely at least one fiber optic. The cable may have at least one fiber optic outside the hollow metal tube. Copper cond ...


9
Dragoset William H Jr: Processing seismic data.. Western Atlas Int, April 25, 1990: EP0365270-A2 (14 worldwide citation)

Marine seismic data is gathered using a cable (16) towed behind a vessel (10) having a slanted orientation in the water. The recorded data is processed to remove the time offset in the recorded data of seismic signals arriving at the cable (16) at varying plane wave angles. The recorded data is then ...


10
Ha Stephen T, Reuter Fritz Werner, Lopez Josephine: Optical fibre cable for wellbore logging. Western Atlas Int, March 31, 1999: GB2329722-A (14 worldwide citation)

A wellbore cable 100 has one or more fiber optic fibers 120,126 with one or more fiber Bragg gratings (127,129, Fig 3D) thereon or therein. Such a cable can be used in a system with an appropriate broadband source, detector system and other items (e.g. isolators, couplers, computers, and acoustic tr ...