1
Bruce W Davis: In situ chemical stimulation of diatomite formations. Chevron Research Company, S R La Paglia, E J Keeling, V A Norviel, May 9, 1989: US04828031 (230 worldwide citation)

An improved method of recovering oil from diatomite is described. A solvent is injected into the diatomite followed by an aqueous surface active solution. The aqueous surface active solution contains a diatomite/oil water wettability improving agent and an oil/water surface tension lowering agent. T ...


2
Gerald R Pastor, Janet F Peters, Wayne K Larsen, Al C Iakovakis: Distillative processing of CO.sub.2 and hydrocarbons for enhanced oil recovery. Chevron Research Company, S R LaPaglia, E J Keeling, V A Norviel, June 28, 1988: US04753666 (80 worldwide citation)

A method of treating CO.sub.2 rich gas for injection into a petroleum reservoir is described. CO.sub.2 rich gas containing methane, nitrogen, ethane, propane, butanes, and heavier components is distilled such that substantially all of the heavier components are produced as a bottoms product and subs ...


3
Bjorn N P Paulsson: Chevron Research Company, S R LaPaglia, E J Keeling, V A Norviel, October 27, 1987: US04702343 (37 worldwide citation)

The invention relates to a nondestructive downhole seismic source capable of generating S.sub.V -waves, S.sub.H -waves, and P-waves alone or in combination to determine information about a surrounding geologic formation. The invention also includes processes of performing crosswell tomography and re ...


4
David E Revus, Russell E Boyer: Microwave oil saturation scanner. Chevron Research Company, S R LaPaglia, E J Keeling, V A Norviel, August 16, 1988: US04764718 (33 worldwide citation)

The present invention is comprised of a non-intrusive microwave sensor system for measuring fluid saturation or multiple fluids contained within a flowline or a fluid saturated porous medium. Here, the microwave oil saturation scanner (MOSS) comprises a transmit portion and a measurement portion. Th ...


5
Robert B Chow, Richard V Nelson: Down-hole gas anchor device. Chevron Research Company, S R LaPaglia, E J Keeling, V A Norviel, June 30, 1987: US04676308 (27 worldwide citation)

The present invention is used to separate gas from liquid while being placed downhole in a hydrocarbon producing well. It essentially comprises a means to divert hydrocarbon production fluid from within a tubing string into the annulus of the well. This diversion turbulently mixes the fluid and rele ...


6
Bjorn N P Paulsson: Downhole electromagnetic seismic source. Chevron Research Company, S R LaPaglia, E J Keeling, V A Norviel, December 29, 1987: US04715470 (23 worldwide citation)

The present invention is a downhole seismic source capable of generating seismic forces in excess of 1000 newtons. The source produces seismic waves for seismic applications, particularly cross borehole measurements and vertical seismic profiling. Coupled with motion sensing devices, the present inv ...


7
Gordon Gould: Optical cable connector assembly including breakable link and process using same. Chevron Research Company, E J Keeling, A Stephen Zavell, V A Norviel, January 26, 1988: US04721355 (23 worldwide citation)

A cable connector assembly capable of mating to an armored optical cable and providing a hermetically sealed electronics cavity is described. A connector assembly provides a means for placing electronics in an electronics cavity. The electronics are capable of converting electrical signals to optica ...


8
F Alex Roberts: Method and apparatus for locating a submerged marine streamer. Chevron Research Company, S R LaPaglia, E J Keeling, V A Norviel, May 26, 1987: US04669067 (22 worldwide citation)

A method is disclosed for locating the position of a marine streamer using two boats and a series of transponders in the streamer. A first pulse is electrically triggered and then generated by the transponders and by a transceiver mounted in the seismic vessel that tows the streamer. These first pul ...


9
James A Bodine, Judson S Kuehn, William H Silcox: Slidable electric valve device having a spring. Chevron Research Company, S R LaPaglia, E J Keeling, V A Norviel, September 20, 1988: US04771982 (22 worldwide citation)

The present invention relates to an electric valve device used in remotely operable applications. It comprises a valve body with a centrally placed slidable valve core. The core has an aperture for fluid passage and may be held in position by an electromagnet in the valve body. Windings are placed i ...


10