Halliburton Energy Services, Inc.

Ivan M Suleiman

Paul D Lord

Jimmie Dean Weaver, Jr

Bradley Leon Todd

Thomas Donovan Welton

Luke William Holderman

John M Terracina

Rajendra Arunkumar Kalgaonkar

Treatment fluids comprising an aqueous fluid and a low-leakoff particulate, wherein the low-leakoff particulate comprises a low molecular weight modified polysaccharide that has been crosslinked with a crosslinking agent wherein the low molecular weight modified polysaccharide contains one or more of the following monosaccharide units: galactose, mannose, glucoside glucose, xylose, arabinose, fructose, glucuronic acid, or pyranosyl sulfate.

Low damage seawater based frac pack fluid

A method comprises providing a treatment fluid comprising an aqueous fluid, and a low-leakoff particulate, contacting a subterranean formation with the treatment fluid, and allowing the low-leakoff particulate to de-link so that at least a portion of the low-leakoff particulate enters the liquid phase. In some cases the treatment fluid comprises from about 5 to about 120 pounds of low-leakoff particulates per thousand gallons of treatment fluid.

A well tool can include a flow path, and a flow blocking device which selectively prevents flow through the flow path. The device can include an anhydrous boron compound. A method of constructing a downhole well tool can include forming a structure of a solid mass comprising an anhydrous boron compound, and incorporating the structure into the well tool.

High strength dissolvable structures for use in a subterranean well

A method comprises providing a treatment fluid comprising a gelling agent, an aqueous base fluid, a buffer composition comprising a plurality of salts, and a crosslinking agent; and contacting a subterranean formation with the treatment fluid. The aqueous base fluid is preferably seawater and the buffer composition includes one or more salts present in the treatment fluid from about 1 to about 1000 pounds per gallon of treatment fluid.

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Duncan, OK, United States of America

Ivan M Suleiman