31
Allen Joseph Columbus, Redford David Arthur: Method for establishing communication path in viscous petroleum-containing formations including tar sands for oil recovery operations. Texaco, Texaco Exploration Canada, Whaley T H, Ries C G, Park Jack H, October 21, 1975: US3913672 (21 worldwide citation)

Many oil recovery techniques for viscous oil recovery including steam injection and in situ combustion require establishment of a high permeability fluid flow path in the formation. The method of the present invention comprises forming an initial entry zone into the formation by means such as hydrau ...


32
Mead Theodore C, Odell Norman R, Shillinglaw Jr John P: Production of lubricating oils. Texaco, Whaley T H, Ries C G, Knox Jr Robert, December 2, 1975: US3923636 (21 worldwide citation)

Lube oils of improved viscosity index are prepared by hydrocracking a heavy oil charge stock, separating the lube oil portion of the product into a light cut and a heavy cut, extracting aromatics from the heavy cut, combining the extracted aromatics with the light cut and hydrogenating the mixture. ...


33
Howlett Donald L, Godsey Ernest E, Martin Carl R: Wide dynamic range amplifier system with slew rate control. Texaco, Whaley T H, Ries C G, Gillespie Ronald G, November 11, 1975: US3919657 (20 worldwide citation)

A wide dynamic range automatic high speed digital gain ranging amplifier system and a plurality of amplifier stages coupled in cascade circuit relationship. The respective outputs of the amplifier stages are coupled through a common output circuit to a comparator circuit for comparison with a predet ...


34
Nebzydoski John W, Patmore Edwin L, Rubin Isaac D: Synthetic aircraft turbine oil. Texaco, Whaley T H, Ries C G, November 26, 1974: US3850824 (20 worldwide citation)

Synthetic lubricating oil composition comprising a major portion of an aliphatic ester base oil having lubricating properties formed by the reaction of a pentaerythritol or trimethylolpropane and an organic monocarboxylic acid containing (a) from about 0.01 to 2.5 weight percent of an ammonium thioc ...


35
Burroughs James W, Herbst Robert L, Moyer William C, Gray Jr Jesse M: Hydrogenation reactors with improved flow distribution. Texaco, Whaley T H, Ries C G, Nichols Theron H, August 5, 1975: US3898049 (19 worldwide citation)

A hydrogenation reactor comprises an elongated vertical container with a height greater than twice the width and divided into a plurality of tall slender chambers, either as a new reactor or as a modified existing reactor, having greatly increased distribution of a fluid reactant mixture flowing thr ...


36
Meador Richard A, Arnold Richard H: Dual radio frequency method for determining dielectric and conductivity properties of earth formations using normalized measurements. Texaco, Whaley T H, Ries C G, Beard William J, July 1, 1975: US3893021 (19 worldwide citation)

A representative embodiment of the present invention discloses methods for determining the conductivity and dielectric characteristics of earth formations in the vicinity of a well borehole. Prior to entry into the borehole, radio frequency electromagnetic fields are generated in a homogeneous mediu ...


37
Haynes Jr Stewart: Secondary oil recovery. Texaco, Whaley T H, Ries C G, April 23, 1974: US3805892 (18 worldwide citation)

Improving secondary recovery following breakthrough of driving fluid at the production wells of inverted five-spot patterns by reversing the functions of injection wells in alternate patterns to producing and that of production wells to injecting.


38
Nelson Gerald Verdell, Wray Glenn Cooper: Hydrocracking process for converting heavy hydrocarbon into low sulfur gasoline. Texaco, Whaley T H, Ries C G, May Jr Douglas H, June 24, 1975: US3891539 (18 worldwide citation)

A hydrocracking process wherein heavy hydrocarbon oils having from about 10 to 50 percent boiling above 1,000.degree.F. and containing appreciable amounts of sulfur, nitrogen, and metal-containing compounds as well as asphaltenes are converted into a minor fraction of low sulfur residual fuel oil an ...


39
Rohr Ulrich: Method and apparatus for logging the course of a borehole. Deutsche Texaco Aktiengesellschaft, Whaley T H, Ries C G, Gillespie Ronald G, July 22, 1975: US3896412 (18 worldwide citation)

The course of a borehole is determined by sending a logging tool down the borehole containing apparatus for measuring an angle of inclination .phi. and an azimuth angle .theta.. The signals are transmitted to surface electronics which also receives a signal corresponding to the rate dl/dt of descent ...


40
Calderon Reynaldo, Umphenour Charles F: Methods for cleaning and forming sand filters and a self-cleaning straight spring filter. Texaco, Whaley T H, Ries C G, Nichols Theron H, August 26, 1975: US3901320 (18 worldwide citation)

Methods for cleaning and manufacturing straight spring and filters for use at the petroliferous unconsolidated sand strata of an oil well, and a self-cleaning straight spring filter are disclosed. The filter comprises one or more sets of contiguous straight parallel closely spaced apart springs moun ...