George L Stegemeier, Peter Van Meurs, Cor F H Van Egmond: Mini-well temperature profiling process. Shell Oil Company, October 14, 1986: US04616705 (250 worldwide citation)

In treating a well, automatically controlled measurements of temperature with depth within a subterranean interval which can be longer than hundreds of feet, deeper than thousands of feet and hotter than 600.degree. C., are made by extending a slender measuring means conduit through the well and the ...

Harold J Vinegar, Scott L Wellington: Sample holder. Shell Oil Company, May 9, 1989: US04827761 (250 worldwide citation)

Sample holder apparatus for use in imaging (X-ray CT/NMR) apparatus is provided. The sample holder may be employed to conduct fluid flow studies on a sample and to measure petrophysical properties of a sample. The sample holder may consist of non-ferromagnetic, nonmetallic components; these componen ...

George L Stegemeier, Harold J Vinegar, Frederick G Carl Jr: Radiant plate heater for treatment of contaminated surfaces. Shell Oil Company, September 3, 1996: US05553189 (249 worldwide citation)

A method and apparatus are provided for remediation of near surface soils, pavements and other surfaces using a radiant heating plate, an insulating layer, and a vapor barrier above the radiant heating plate and below the insulation. The radiant heating plate transfers thermal energy to the surface ...

Robin A Hartmann, Elvira H Mulder: Method for drilling a borehole from one cased borehole to another cased borehole. Shell Oil Company, July 30, 1996: US05541517 (249 worldwide citation)

In a method for drilling adjacent to a cased known first borehole a second borehole in a predetermined direction the following steps are carried out for a number of along hole depths d.sub.i :

Harold J Vinegar, Ilya Emil Berchenko, Eric Pierre de Rouffignac, John Michael Karanikas, Kevin Albert Maher, George Leo Stegemeier, Gordon Thomas Shahin Jr, Scott Lee Wellington: In situ thermal processing of a heavy oil diatomite formation. Shell Oil Company, September 12, 2006: US07104319 (248 worldwide citation)

An in situ process for treating a diatomite formation is provided. The process may include providing heat from one or more heaters to at least a portion of the formation. The heat may be allowed to transfer from the one or more heaters to a part of the formation such that heat from the one or more h ...

Ueber Russell C, Van Meurs Peter, Brew Jerke R: Laterally expanding oil shale permeabilization. Shell Oil Company, September 18, 1973: US3759328 (248 worldwide citation)

An improved process of permeabilizing and recovering water soluble and/or heat sensitive minerals and hydrocarbons from an oil shale formation containing said minerals by forming a cavern and vertically expanding it by contacting the cavern roof with a hot aqueous fluid while also causing horizontal ...

Frederick G Carl Jr, Eric P de Rouffignac: Current to power crossover heater control. Shell Oil Company, Del S Christensen, February 23, 1993: US05189283 (248 worldwide citation)

A control system which minimizes the start up time of heaters and sustains long term automatic control is provided. This control system automatically converts control time constant current to constant power when the power reaches the power set and provides that after power interruptions, control wil ...


Eric de Rouffignac, Harold J Vinegar: Remediation method. Shell Oil Company, December 7, 1999: US05997214 (247 worldwide citation)

A method is provided to remove volatile liquid contaminates from a contaminated volume of earth, the contaminated volume lying above a noncontaminated layer of earth, the method including the steps of: penetrating the contaminated volume with at least one wellbore so that a wellbore penetrates the c ...

Click the thumbnails below to visualize the patent trend.