51
Harold J Vinegar, William P Rothwell: NMR imaging of materials for transport properties. Shell Oil Company, January 12, 1988: US04719423 (257 worldwide citation)

NMR imaging methods are provided for determining spatial diffusion coefficients, formation resistivity factors, mean pore size, and permeability of a porous material. The imaging methods employ a constant magnetic field and two images are obtained for the material, one with a non-imaging gradient an ...


52
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 (256 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 ...


53
Daljit Singh Gill, Wilhelmus Christianus Maria Lohbeck, Robert Bruce Stewart, Jacobus Petrus Maria Van Vliet: Method of creating a casing in a borehole. Shell Oil Company, September 16, 1997: US05667011 (256 worldwide citation)

The invention relates to a method of creating a casing in a borehole formed in an underground formation. The method comprises the steps of (a) installing a tubular liner in the borehole, the liner being radially expandable in the borehole whereby the liner in its radially expanded position has a plu ...


54
Harold J Vinegar, Ridvan Akkurt, Pierre Tutunjian: NMR logging of natural gas reservoirs. Shell Oil Company, Del S Christensen, March 5, 1996: US05497087 (256 worldwide citation)

A lithology-independent method of well logging to estimate the pore size within a formation containing natural gas. The method makes use of a pulsed NMR logging tool utilizing a recovery time that is greater than the relaxation time of hydrocarbon gas within the formation. In a preferred embodiment, ...


55
Harold J Vinegar, Pierre N Tutunjian: Determining multiphase saturations by NMR imaging of multiple nuclides. Shell Oil Company, September 6, 1988: US04769602 (256 worldwide citation)

The present invention provides a method for measuring fluid saturations during multiphase flow in porous media by NMR imaging of preselected nuclides in preselected fluids. For two-phase imaging, one of the fluids to be imaged may contain protons and the other fluid may contain fluorine. For three p ...


56
Eric Pierre de Rouffignac, Ilya Emil Berchenko, Thomas David Fowler, Bruce Gerard Hunsucker, John Michael Karanikas, Charles Robert Keedy, Robert Charles Ryan, Harold J Vinegar, Scott Lee Wellington, Etuan Zhang: In situ thermal processing of a relatively impermeable formation using an open wellbore. Shell Oil Company, May 9, 2006: US07040400 (254 worldwide citation)

A method for treating a relatively low permeability formation containing heavy hydrocarbons in situ may include providing heat from one or more heat sources to a portion of the formation. The heat may be allowed to transfer from the heat sources to a selected section of the formation. The transferre ...


57
Harold J Vinegar, Daniel J O Meara Jr, John A Rohan: Method and apparatus for determining distribution of fluids. Shell Oil Company, June 9, 1987: US04671102 (254 worldwide citation)

Method and apparatus are provided to determine the distribution of fluids in a sample employing a centrifuge. The apparatus is an automated centrifuge which may employ a plurality of X-ray energies to determine a two-dimensional image of the saturation of multiple fluids in a sample. The saturation ...


58
George Leo Stegemeier, Harold J Vinegar: Method for recovering contaminants from soil utilizing electrical heating. Shell Oil Company, Del S Christensen, August 12, 1997: US05656239 (254 worldwide citation)

An in-situ method is disclosed for low pressure vaporization and recovery of contaminants from surface and near-surface soil by electrically heating the soil with a pattern of hollow electrodes and pulling a deep vacuum through the electrodes. The surface of the soil is sealed with an impermeable ba ...


59
Cornelis F van Egmond, Frederick G Carl Jr, George L Stegemeier, Harold J Vinegar: Surface heating blanket for soil remediation. Shell Oil Company, July 20, 1993: US05229583 (254 worldwide citation)

This invention comprises a surface heating blanket assembly useful for soil remediation. The assembly principally comprises a metallic furnace belt with tubular electric heating elements inserted between the rungs thereof and making low resistance contact therewith. The furnace belt heater is capabl ...


60
Harold J Vinegar, Eric Pierre de Rouffignac, John Michael Karanikas, Kevin Albert Maher, Meliha Deniz Sumnu Dindoruk, Scott Lee Wellington, Steven Dexter Crane, Margaret Ann Messier, Bruce Edmunds Roberts: In situ thermal processing of a tar sands formation. Shell Oil Company, June 27, 2006: US07066254 (253 worldwide citation)

An in situ process for treating a tar sands 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 ...