1
Lawrence B Owen, John F Schatz, Usman Ahmed: Method of in-situ retorting of carbonaceous material for recovery of organic liquids and gases. Terra Tek, M Reid Russell, May 24, 1983: US04384613 (249 worldwide citation)

The method of the present invention involves a two-phase process for in-situ retorting and recovery of carbonaceous material contained within typical subterranean tar sand formations, and includes formation of conventional arrays of in-seam ducts, and positioning heating devices to heat a section of ...


2
Arfon H Jones, Raymond A Cutler: Hollow proppants and a process for their manufacture. Terra Tek, M Reid Russell, October 15, 1985: US04547468 (104 worldwide citation)

Hollow, fine-grained ceramic proppants are less expensive and improve fracture control when compared to conventional proppants (dense alumina, mullite, bauxite, zirconia, etc.). Hollow proppants of the present invention have been fabricated by spray drying, followed by sintering in order to obtain a ...


3
Dean V Power: Solar illuminated energy conserving greenhouse. Terra Tek, M Reid Russell, April 22, 1980: US04198953 (39 worldwide citation)

The present invention in an energy conserving greenhouse involves an insulated and opaque structure whose inner walls are preferably formed, coated or colored to reflect visible light striking thereagainst onto plant surfaces therein, the structure utilizing a shuttered lense arrangement of minimum ...


4
Lawrence B Owen, Sidney J Green: Forced refreezing method for the formation of high strength ice structures. Terra Tek, Beehler Pavitt Siegemund Jagger Martella & Dawes, January 6, 1987: US04634315 (31 worldwide citation)

A method for accelerating construction of a load bearing ice island, formed by either sea water spraying or flooding techniques, of higher quality or in a shorter time or both than would otherwise be possible. The method involves forced refreezing of spray ice by application of a vertical stream of ...


5
Sidney J Green, Floyd H Shipman, Carl J H B Van Kempen: Active drill stabilizer assembly. Terra Tek, M Reid Russell, December 30, 1980: US04241796 (19 worldwide citation)

The present disclosure concerns an active drill stabilizer assembly for arrangement in a drill string directly behind a conventional or modified drill bit that utilizes drilling fluid as a sensing and working deviation/correction energy source. In a sensing loop of the present invention, the drillin ...


6
Arfon Harry Jones, Henri Samuel Swolfs, Sidney Joseph Green: Process for direct measurement of the orientation of hydraulic fractures. Terra Tek, M Reid Russell, August 30, 1977: US04044828 (17 worldwide citation)

This is an invention in a method for locating the azimuthal direction of fractures induced into an underground formation adjacent to a well bore. Practicing the method of the invention involves measurement of stresses created at or near ground surface by such fracture propagation, utilizing pressure ...


7
Christopher F Johnson, Sidney J Green: Pressure balanced loading piston for triaxial test cells. Terra Tek, M Reid Russell, July 14, 1987: US04679441 (17 worldwide citation)

A triaxial test cell and pressure balanced piston therefor that includes a housing containing a vessel wherein a test specimen is located, immerged in a confining fluid. The housing includes a passage wherein the piston is installed to slide so as to move an end thereof into the vesel, which passage ...


8
Lynn M Barker, Randall V Guest: Constant point of load application fracture specimen loading machine. Terra Tek, M Reid Russell, April 22, 1980: US04198870 (15 worldwide citation)

A constant point of load application fracture specimen loading machine for applying a load between grips that engage opposite grip groove faces of a slotted specimen that preferably has as a remainder portion in that slot a "V" shaped slot root whereby, when the machine grips are moved apart, they r ...


9
Sidney J Green, Randy R Nielsen: Failsafe hydraulic prestressing nut. Terra Tek, M Reid Russell, January 8, 1980: US04182215 (14 worldwide citation)

The present invention relates to hydraulic prestressing nuts for setting a tensile stress in a bolt whereon the nut of the present invention is turned. The invention involves a nut body wherein an annular piston is arranged to be hydraulically extended from a bottom face thereof against a plate, hea ...


10
Sidney J Green: High pressure rotary coupling. Terra Tek, M Reid Russell, Robert R Mallinckrodt, July 31, 1984: US04462617 (9 worldwide citation)

The present invention in a rotary coupling or swivel is arranged for maintaining together, respectively, stationary and rotating pipes wherethrough a fluid under pressure is passed and involves an outer stationary body with an inner body journaled therein. The two bodies are held together by positio ...