A method for forming a well and pipeline treating fluid is provided. The method comprises combining a cross-linkable gelling polymer, a scavenging compound capable of reducing a concentration of divalent and polyvalent metal ions and salts thereof available for reaction, a hydration solvent and optionally an acid. The resulting mixture has a pH ranging from about 3 to about 7 and a first viscosity. The mixture is maintained at conditions suitable for hydration of the cross-linkable gelling polymer until the mixture has a second viscosity that is greater than the first viscosity. The mixture is combined with an aqueous based fluid and at least one cross-linking agent. The pH of the mixture is raised to a sufficient level to allow a desired degree of cross-linking to occur. Other methods, a well and pipeline treating gel and a well and pipeline treating fluid are also provided.
Liquid Polymer Containing Compositions For Thickening Aqueous Systems
Kenneth E. Watson - Houston TX Keith W. Sharp - Houston TX
Assignee:
NL Industries, Inc. - New York NY
International Classification:
C09K 702 E21B 4300
US Classification:
252 8514
Abstract:
A liquid polymer containing composition, useful as a thickening agent for aqueous systems, containing hydroxyethyl cellulose, a hydrophobic liquid medium in which the hydroxyethyl cellulose is substantially non-swellable and a gelling agent for thickening the hydrophobic liquid.
Apparatus For Creating Gas-Liquid Interfacial Contact Conditions For Highly Efficient Mass Transfer
Thomas L. Grisham - Tyler TX Janet K. Peters - Houston TX Keith W. Sharp - Houston TX Edward E. Ebel - Mabank TX
Assignee:
RevTech Industries, Inc. - Houston TX
International Classification:
B01D 2126
US Classification:
96202
Abstract:
Apparatus for creating gas-liquid interfacial contact conditions for highly efficient mass transfer between gas and liquid includes a gas-liquid contactor assembly including a hollow porous tube surrounded by an outer jacket defining a gas plenum between the jacket and the porous tube; a liquid feed assembly including a nozzle for injecting liquid into the porous tube in a spiraling flow pattern around and along the porous tube; a gas-liquid separator assembly at the first end of the porous tube including a nonporous degassing tube coaxially aligned with and connected to the porous tube, a gas outlet port coaxially aligned with the degassing tube to receive a first portion of gas flowing from the degassing tube, a first gas duct coaxially aligned with and connected to the gas outlet duct to convey the first portion of gas therefrom; and a liquid collection assembly. A second gas discharge assembly to collect and convey gas from the first end of the porous tube is also disclosed.
Liquid Polymer Containing Compositions For Thickening Aqueous Systems
Kenneth E. Watson - Houston TX Keith W. Sharp - Houston TX
Assignee:
NL Industries, Inc. - New York NY
International Classification:
C09K 702 E21B 4300
US Classification:
252 8511
Abstract:
A liquid polymer containing composition, useful as a thickening agent for aqueous systems, containing hydroxyethyl cellulose, a hydrophobic liquid medium in which the hydroxyethyl cellulose is substantially non-swellable and a gelling agent for thickening the hydrophobic liquid.
Joseph R. Murphey - Spring TX Jeffrey S. McKennis - The Woodlands TX Keith W. Sharp - Houston TX
Assignee:
Tetra Technologies, Inc. - The Woodlands TX
International Classification:
C09K 702 E21B 2100 E21B 4304
US Classification:
507145
Abstract:
A method for removing filtercake from a subterranean borehole comprising drilling the borehole with a drilling fluid that includes additives to form a filtercake having an oxidation-degradable component, preferably a polysaccharide. The filtercake is contacted with a clear brine containing bromine or bromate generating agents to degrade the polymers within the filtercake. The brine contains bromide salts and an oxidant capable of delayed oxidation of the bromide to bromine at downhole conditions.
Texas Christian University 1970 - 1975
Doctorates, Doctor of Philosophy, Philosophy, Chemistry
University of Oklahoma 1966 - 1970
Bachelors, Bachelor of Science, Chemistry
Duncan High School