1
Donald M Fenton: Recarbonation of spent oil shale. Union Oil Company of California, Lannas S Henderson, Richard C Hartman, Dean Sandford, April 5, 1977: US04016239 (228 worldwide citation)

Spent oil shale from retorting operations, containing water-soluble alkaline oxides such as calcium oxide is subjected to a recarbonation process in order to reduce its alkalinity and thereby prevent ecological damage to plant and aquatic animal life which could result from alkaline leachings derive ...


2
Julius P Gallus: Corrosion and erosion-resistant wellhousing. Union Oil Company of California, Dean Sandford, Gregory F Wirzbicki, June M Bostich, June 23, 1987: US04674572 (129 worldwide citation)

Corrosion and erosion of metal well casings due to production of corrosive well fluids, especially geothermal brines, is avoided by producing corrosive fluids through an impermeable cement wellhousing comprised of inner and outer substantially continuous cement liners which envelop and insulate from ...


3
George P Maly: Method of acidizing wells. Union Oil Company of California, Richard C Hartman, Dean Sandford, Gerald L Floyd, December 21, 1976: US03998272 (80 worldwide citation)

A process using discrete solid particles of polyvinyl acetate as diverting agents in acid treating subterranean geological formations penetrated by a well.


4
Burton B Sandiford, Robert K Knight: Plugging of water-producing zones in a subterranean formation. Union Oil Company of California, Richard C Hartman, Dean Sandford, Gerald L Floyd, June 28, 1977: US04031958 (78 worldwide citation)

A method of selectively plugging permeable water-producing zones in a subterranean formation of nonuniform permeability comprising sequentially injecting into the formation (1) an aqueous solution of a first reactant material rendered more viscous than the subsequently injected liquids by the additi ...


5
John W Ward, Texas V Inwood: Alkylation of aromatic hydrocarbons. Union Oil Company of California, Dean Sandford, Lannas S Henderson, Cleveland R Williams, January 22, 1980: US04185040 (78 worldwide citation)

Highly stable and active catalysts are provided for the alkylation of aromatic hydrocarbons with C.sub.2 -C.sub.4 olefins. The catalysts are extruded composites of an acidic, crystalline aluminosilicate zeolite, e.g. Y zeolite, and a porous mineral oxide binder. The basic novel feature of the invent ...


6
John W Ward: Hydrocarbon conversion catalyst. Union Oil Company of California, Gregory F Wirzbicki, Dean Sandford, December 6, 1983: US04419271 (76 worldwide citation)

A hydrocarbon conversion catalyst useful for hydrocracking hydrocarbons to more valuable products comprises one or more hydrogenation components supported on a base containing (1) a crystalline aluminosilicate zeolite having activity for cracking hydrocarbons and (2) a dispersion of silica-alumina i ...


7
Texas V Inwood, Carlyle G Wight, John W Ward: Liquid-phase alkylation and transalkylation process. Union Oil Company of California, Dean Sandford, Gregory F Wirzbicki, Cleveland R Williams, July 10, 1984: US04459426 (74 worldwide citation)

A process for alkylating aromatic hydrocarbons with C.sub.2 to C.sub.4 olefins and for transalkylating alkyl or poly-alkylaromatic compounds with an aromatic hydrocarbon. A major portion of the aromatic hydrocarbon is recycled to the alkylation zone while the remainder thereof and poly-alkylaromatic ...


8
David J Watanabe: Method for selectively acidizing the less permeable zones of a high temperature subterranean formation. Union Oil Company of California, Dean Sandford, Daniel R Farrell, April 14, 1981: US04261421 (68 worldwide citation)

The less permeable zones of subterranean formations having temperatures above about 250.degree. F. are acidized by selectively plugging the more permeable zones with acid-soluble particulate diverting agents and then injecting a substantially anhydrous acid precursor into the formation. The acid pre ...


9
David S Pye, Donald L Ash, Robert W Rardin: Method for placing a liner in a pressurized well. Union Oil Company of California, Dean Sandford, Gregory F Wirzbicki, Gerald L Floyd, February 12, 1985: US04498543 (65 worldwide citation)

A method for placing a perforated liner in a well penetrating a reservoir containing a high pressure fluid, for example, a geothermal fluid. The holes in one or more sections of a preperforated liner are temporarily closed by inserting therein hollow plugs having an open flange end at the outer surf ...


10
David J Watanabe: Inhibition of scale deposition from steam generation fluids. Union Oil Company of California, Dean Sandford, Gregory F Wirzbicki, Gerald L Floyd, October 16, 1984: US04476930 (64 worldwide citation)

A method for treating a hot water-containing fluid stream passing through a conduit, under conditions of temperature and pressure whereupon at least a portion of the water flashes to steam, to inhibit the formation of scale deposited on the conduit and/or dissolve any such scale already formed, and ...