1
Irwin Ginsburgh, Christos G Papadopoulos: Method for determining the position and inclination of a flame front during in situ combustion of an oil shale retort. Standard Oil Company, Robert B Stevenson, Arthur McIlroy, January 22, 1980: US04184548 (168 worldwide citation)

A method for locating the position of a flame front within a rubbled oil shale retort of known dimension and location during an in situ combustion of the retort involving initiating a seismic signal at a selected position on the earth's surface relative to the retort, detecting the reflected seismic ...


2
Charles A Powers, George B Holman, Robert C Smith: Process and composition for cementing casing in a well. Standard Oil Company, Robert B Stevenson, Arthur McIlroy, July 19, 1977: US04036301 (105 worldwide citation)

A process for reducing the waiting-on-cement (WOC) time associated with the cementing of a casing string in an oil well involving the specific improvement of pumping into the well a highly retarded cement slurry containing a dispersed encapsulated accelerator, such as calcium chloride or anhydrous s ...


3
David R Skinner: Speed control. Standard Oil Company, Arthur McIlroy, March 20, 1979: US04145161 (71 worldwide citation)

This is a method and apparatus for controlling an oil-well beam pumping unit in a manner which allows increased oil production. The AC electric motor of the beam pumping unit is supplied power through a variable frequency power supply, whose frequency (and voltage) is controlled by circuitry to auto ...


4
Richard F Kearns, Thomas R Kearns, Timothy P Kearns: Protective coating system. Edward C Kearns, Arthur McIlroy, September 14, 1982: US04349398 (71 worldwide citation)

Protective coating systems are reinforced by first laying a suitable mesh screen of plastic, metal or the equivalent on the surface to be protected. Thereafter, a thin layer of a coating composition, e.g., a latex cement, is poured over the mesh and allowed to set. In this operation the mesh is bond ...


5
Duane B Anderson, Carl D Edwards: Shale stabilizing drilling fluid. Standard Oil Company, Robert B Stevenson, Arthur McIlroy, March 6, 1979: US04142595 (68 worldwide citation)

A process and composition are described for use in drilling shale and especially in drilling the troublesome types of shale which heretofore have been impossible to drill effectively. The aqueous drilling fluid of this invention so effectively stabilizes the shale that additions to maintain the spec ...


6
Russell L McGalliard, Gary W Larrabee: Method for cryogenic separation of carbon dioxide from hydrocarbons. Standard Oil Company, Robert B Stevenson, Arthur McIlroy, January 29, 1980: US04185978 (52 worldwide citation)

The operation of a demethanizer being used to cryogenically separate high carbon dioxide content hydrocarbon feed into liquid ethane essentially free of both methane and carbon dioxide with simultaneous production of overhead gas comprising methane and carbon dioxide without carbon dioxide icing to ...


7
James A Britch, John R Smith: Flapper-type subsurface safety valve. Standard Oil Company, John D Gassett, Arthur McIlroy, May 25, 1976: US03958633 (47 worldwide citation)

This is a subsurface safety valve for insertion in a tubing string in a well drilled in the earth, normally for the production of oil and gas. This valve is lowered and retrieved by wireline and is seated in a special side-pocket mandrel which is a part of the tubing string. One suitable valve is a ...


8
Richard A Stoltz, Albert C Metrailer: Method for determining the position and inclination of a flame front during in situ combustion of a rubbled oil shale retort. Standard Oil Company, Robert B Stevenson, Arthur McIlroy, September 11, 1979: US04167213 (44 worldwide citation)

A passive method for locating the position and inclination of a flame front, within an oil-shale retort of known dimensions and location during an in situ combustion of the retort involving detecting the sound generated by the flame front, by two matched detectors separated by a fixed known distance ...


9
Lorenz V Kunkel, John W Palm, Luther E Petty, Howard Grekel: CBA for Claus tail gas cleanup. Standard Oil Company, Robert B Stevenson, Arthur McIlroy, July 12, 1977: US04035474 (37 worldwide citation)

An improved method for further removal of sulfur from the tail gas of a conventional Claus plant by the use of a Cold Bed Adsorption process involving the specific improvement of maintaining at all times the lead Claus reactor of a series of such reactors at sufficiently high temperatures to promote ...


10
John B Farr: Downhole seismic source. Standard Oil Company, Albert C Metrailer, Arthur McIlroy, July 5, 1977: US04033429 (29 worldwide citation)

Disclosed is a seismic source forming part of a drill string which allows geological prospecting while drilling a borehole. The source includes a section of drill pipe having a spiral cam machined into its outer surface and a port for allowing mud to flow from the inside of the drill pipe into the b ...



Click the thumbnails below to visualize the patent trend.