41
Keiichiro Ikeda: Method of seismic collection utilizing multicomponent receivers. Chevron Research Company, H D Messner, Edward J Keeling, September 9, 1986: US04611312 (22 worldwide citation)

By using wave tracking rather than a downward continuation concept, two sets of elastic wave fields (one generated by a seismic source, the other recorded by multicomponent geophones) are migrated separately and are then imaged. The process is repeated for common shot gathers, and then the images (a ...


42
Stanley O Hutchison: Low heat conductive frangible centralizers. Chevron Research Company, R L Freeland Jr, Edward J Keeling, July 11, 1978: US04099564 (21 worldwide citation)

Low heat conductive frangible centralizers are provided for use in a tubing string in a well and include a central tubular section connectable into the tubing string and having a plurality of radially extending polymerized furfuryl alcohol impregnated cordierite lugs in spaced apart position on the ...


43
Lew E Baskins, J Patrick Ellis: Power-up rack and method of use in association with portable microcomputers within a refinery and the like. Chevron Research Company, Edward J Keeling, H D Messner, December 6, 1983: US04419616 (21 worldwide citation)

A power-up storage rack for microcomputers is provided for use in accommodating automatic recharging of each microcomputer irrespective of its multiple uses by several different operators. The rack resembles an H-shaped channel beam. Recharging results via electrical interconnection of multi-pin (ma ...


44
Patrick F Muldary, Erdal Tansev: Determining steam quality. Chevron Research Company, R L Freeland Jr, George W Wasson, Edward J Keeling, April 17, 1979: US04149403 (21 worldwide citation)

Method and apparatus for determining the quality of wet steam flowing in a steam line utilizing the relationship between critical flow pressure (P.sub.c) and upstream pressure (P.sub.u) to develop a critical pressure ratio P.sub.c /P.sub.u to obtain the steam water mixture inlet enthalpy (H) from em ...


45
Clint W Frasier: Method of seismic collection utilizing multicomponent processing receivers and processing resultant conventional and converted P- or S-wave data. Chevron Research Company, H D Messner, Edward J Keeling, June 17, 1986: US04596005 (21 worldwide citation)

This invention relates to a method of increasing resolution of high-intensity amplitude events in seismic records provided by common midpoint collection methods (CMP) wherein nonsymmetrical travel paths of incident and reflected rays of the generated conventional waves (due to dip and depth) are tak ...


46
William J Ostrander: Method of improving the seismic resolution of geologic structures. Chevron Research and Technology Company, Edward J Keeling, Matt W Carson, January 21, 1992: US05083297 (20 worldwide citation)

A method for improving the seismic resolution of geologic structures is disclosed. Refracted wave arrivals are gathered into common midpoint trace gathers. Data representations originating inside a critical offset distance are muted, and the remaining data is tau-P summed and projected into zero sou ...


47
Nelson W Hall, Donald T Higdon: Stern planes for swath vessel. Swath Ocean Systems, Charles E Townsend Jr, Edward J Keeling, April 12, 1994: US05301624 (20 worldwide citation)

The invention provides an improved SWATH type vessel having pontoons and a stern plane located in a position to influence water flow in the region of the tail cone portions of the pontoons and the propellers to reduce depression of the water adjacent the propellers which would otherwise cause propel ...


48
Darryl E Laxo: Portable hard hat. Chevron Research Company, P L McGarrigle, Edward J Keeling, August 26, 1986: US04607397 (20 worldwide citation)

The present invention relates to a hard hat which may be collapsed and easily stored when not in use. The hat uses a brim as a structural support, multiple curved segments and means for locking the segments into place. The multiple curved segments have raised and lowered portions, decreasing radii, ...


49
Bibhas R De, Michael A Nelson: Method and apparatus for broadband measurement of dielectric properties. Chevron Research and Technology Company, Edward J Keeling, Matt W Carson, July 21, 1992: US05132623 (20 worldwide citation)

A method and apparatus measures dielectric properties over a broad range of frequencies. The functions of various resistivity and dielectric constant measuring devices such as logging tools are combined in a single tool. A measuring tool includes novel transmitting and receiving antennas. Electromag ...


50
Steinar Sollie, Arild A Andresen: Rotating double barrel core sampler. Chevron Research Company, Edward J Keeling, S R LaPaglia, May 21, 1985: US04518050 (19 worldwide citation)

The present invention provides disclosure of a core sampler that includes a rotatably extending outer barrel containing a relatively non-rotating core barrel which is extendable with the outer barrel in response to drilling mud pressure into the material to be cored by a mud turbine which rotates th ...