1
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 ...


2
David S Pye, Julius P Gallus, Paul W Fischer: Well completion and workover fluid having low fluid loss. Union Oil Company of California, Dean Sandford, Gerald L Floyd, March 11, 1980: US04192753 (43 worldwide citation)

A non-damaging variable-density low fluid loss well completion and workover fluid composition which is a dispersion of finely divided slowly oil-soluble, water-insoluble solid particulate matter in a thickened aqueous salt solution. The fluid composition is a mixture of an aqueous solution of a wate ...


3
Julius P Gallus: Marker fluid composition for spotting cement in offshore wells. Union Oil Company of California, Dean Sandford, Gregory F Wirzbicki, June 5, 1984: US04452638 (24 worldwide citation)

Cementing casing in an offshore well by displacing a drilling fluid with a settable cement slurry wherein there is injected into the annulus between the sidewall of the well and the casing ahead of the cement slurry a slug of a visually identifiable marker fluid containing cement, water, particulate ...


4
Paul W Fischer, David S Pye, Julius P Gallus: Low fluid loss additive composition. Union Oil Company of California, September 7, 1976: US03979305 (23 worldwide citation)

An oil-soluble, water-insoluble low fluid loss additive composition comprising a particulated, homogeneous solid solution of (1) wax; (2) an oil-soluble polyhydroxy higher fatty acid partial ester surface active agent; and (3) a water-dispersible surface active agent such as a polyoxyethylene alkyl ...


5
Paul W Fischer, David S Pye, Julius P Gallus: Method of conducting drilling operations. Union Oil Company of California, Richard C Hartman, Dean Sandford, John E Vanderburgh, November 2, 1976: US03989632 (22 worldwide citation)

A method for reducing the loss of fluid through the walls of a well penetrating a permeable subterranean formation during completion, workover and other operations. The method provides for the use of a fluid comprising an aqueous dispersion of finely divided, slowly oil-soluble, water-insoluble soli ...


6
Paul W Fischer, David S Pye, Julius P Gallus: Method for drilling and treating subterranean formations using a low fluid loss agent. Union Oil Company of California, September 7, 1976: US03979304 (20 worldwide citation)

Well drilling, completion and workover operations, hydraulic fracturing, acidizing, and other well treating operations are improved by the addition to the drilling or treating fluid of an oil-soluble, water-insoluble low fluid loss agent comprising a particulated, homogeneous solid solution of (1) w ...


7
Julius P Gallus: Well stimulating process. Union Oil Company of California, Richard C Hartman, Dean Sandford, March 14, 1978: US04078612 (16 worldwide citation)

A method for stimulating a producing well by introducing an explosive into perforation tunnels which communicate between the reservoir and the well bore and detonating the explosive while maintaining the well bore at about reservoir pressure and relatively free of explosive.


8
Julius P Gallus: Use of marker fluid in cementing offshore wells. Union Oil Company of California, Dean Sandford, Gregory F Wirzbicki, Gerald L Floyd, July 5, 1983: US04391329 (15 worldwide citation)

Cementing casing in an offshore well by displacing a drilling fluid with a settable cement slurry wherein there is injected into the annulus between the sidewall of the well and the casing ahead of the cement slurry a slug of a visually identifiable marker fluid containing cement, water, particulate ...


9
Julius P Gallus: Method for cementing high temperature wells. Union Oil Company of California, Dean Sandford, Daniel R Farrell, April 29, 1980: US04200153 (14 worldwide citation)

A cement system including minor amounts of a carbon black cement additive admixed with cement is used to cement high temperature wells.


10
Julius P Gallus: Method for cementing high temperature wells. Union Oil Company of California, Richard C Hartman, Dean Sandford, Daniel R Farrell, September 19, 1978: US04114692 (13 worldwide citation)

A cement system including a carbon-containing, low volatile material additive admixed with cement in proportions sufficient to provide a fixed carbon content of at least 0.02 weight percent is used to cement high temperature wells. Additives include anthracite, calcined coke, uncalcined coke, burned ...