1
Thomas R Sifferman, Derry D Sparlin: Control of incompetent formations with thickened acid-settable resin compositions. Continental Oil Company, A Joe Reinert, April 25, 1978: US04085801 (40 worldwide citation)

A method and composition is provided for positioning a polymeric material having particulate matter disposed therein in a subterranean formation penetrated by a wellbore. The composition consists essentially of a hydrocarbon oil, a quaternary salt of an essentially undegraded, cellulose sulfate, sol ...


2
Thomas R Sifferman: Method of transporting viscous hydrocarbons. Conoco, Bayless E Rutherford Jr, May 5, 1981: US04265264 (34 worldwide citation)

An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the method comprises adding water containing an effective amount of a combination of (a) a sodium or ammonium salt of an ethoxylated alcohol sulfate and (b) a surfactant selected from the group con ...


3
Thomas R Sifferman, Derry D Sparlin: Use of thickened oil for sand control processes. Continental Oil Company, A Joe Reinert, April 25, 1978: US04085802 (31 worldwide citation)

Sand control in an incompetent formation is effected by squeezing a thickened composition [comprising a hydrocarbon oil carrier, particulate matter (e.g. sand) a base-settable thermosetting resin, a neutralizing agent (e.g., lauryl amine), a miscible polar solvent (e.g. ethanol), and a carboxy vinyl ...


4
Thomas R Sifferman: Method of transporting viscous hydrocarbons. Conoco, Bayless E Rutherford Jr, August 25, 1981: US04285356 (23 worldwide citation)

An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the method comprises adding water containing an effective amount of (a) an anionic alkyl polyether ethoxylated sulfate or (b) a combination of this material with an alcohol ether sulfate. The resul ...


5
Thomas R Sifferman: Methods of inhibiting the flow of water in subterranean formations. Conoco, A Joe Reinert, December 6, 1983: US04418755 (18 worldwide citation)

Methods of inhibiting the flow of water into and from subterranean well formations wherein one or more gelling agents having the property of forming highly viscous gels in the presence of water are injected into the formation.


6
Thomas R Sifferman: Methods of inhibiting the flow of water in subterranean formations. Conoco, A Joe Reinert, November 1, 1983: US04412586 (10 worldwide citation)

Methods of inhibiting the flow of water into and from subterranean well formations wherein one or more gelling agents having the property of forming highly viscous gels in the presence of water are injected into the formation.


7
Thomas R Sifferman, John M Swazey, C Bryan Skaggs, Nina Nguyen, Daniel B Solarek: Fluid loss control additives and subterranean treatment fluids containing the same. Monsanto Company, National Starch and Chemical Investment Holding Corporation, Fitzpatrick Cella Harper & Scinto, January 30, 2001: US06180571 (9 worldwide citation)

Selectively cross-linked starches are disclosed that are useful as fluid loss control additives in subterranean treatment fluids comprising starches that are cross-linked to a Brabender peak viscosity of about 800 to about 1250 Brabender units after about 40 to about 70 minutes at about 92° C. and p ...


8
C Bryan Skaggs, Thomas R Sifferman, John M Swazey, Harold D Dial, Walter G Rakitsky: Reticulated bacterial cellulose as a rheological modifier for polyol fluid compositions. Monsanto Company, Fitzpatrick Cella Harper & Scinto, September 14, 1999: US05951910 (9 worldwide citation)

Rheologically modified compositions, and rheologically modified fluid compositions prepared therefrom, containing reticulated bacterial cellulose in a polyol base fluid, are disclosed. The amount of reticulated bacterial cellulose present in the composition is an amount effective to viscosify the po ...


9
Thomas R Sifferman, Derry D Sparlin: Control of incompetent formations with thickened compositions containing base-settable resin. Continental Oil Company, A Joe Reinert, August 8, 1978: US04105618 (7 worldwide citation)

Sand control in an incompetent formation is effected by squeezing a thickened composition [comprising a hydrocarbon oil carrier, particulate matter (e.g. sand) a base-settable thermosetting resin, a neutralizing agent (e.g. lauryl amine), a miscible polar solvent (e.g. ethanol), and a carboxy vinyl ...


10
Dennis H Hoskin, Thomas R Sifferman: Method for imparting selectivity to polymeric gel systems. Mobil Oil Corporation, Alexander J McKillop, Charles J Speciale, Michael J Mlotkowski, October 20, 1992: US05156214 (5 worldwide citation)

A method for imparting selectivity to an in-situ gel-forming composition for placement within a subterranean oil-bearing formation having relatively high permeability zones and relatively low permeability zones, comprising the steps of: preparing an aqueous-based mixture, the mixture comprising: a f ...