Halliburton Company

Halliburton Energy Services, Inc.

Garland W Davis

Jiten Chatterji

David D Onan

Roger Stanley Cromwell

Rickey Lynn Morgan

Wendell D Riley

Bobby J King

D Chad Brenneis

Dennis Willie Gray

Patty L Totten

Dralen T Terry

James H Cantrell

Ronald J Patin

A test method for foamed cement does not transfer the test composition under pressure from one device to another and the equipment is not handled under dangerous pressure, thereby providing a safe test method. Steps include: rotating a paddle at a first speed in a pressurized foamable cement composition in a receptacle in a high pressure, high temperature chamber such that the foamable cement composition becomes a foamed cement; rotating the paddle at a second speed in the pressurized foamed cement for a selected time period; maintaining the foamed cement static after the selected time period and increasing temperature in the chamber during a foamed cement setting period; thereafter reducing temperature in the chamber and reducing pressure in the chamber; removing the foamed cement in a set condition and the paddle from the chamber; removing the set foamed cement from the paddle; and testing the removed foamed cement.

Evaluating foamed cement under pressure and temperature

The present invention provides set retarding additives, set retarded hydraulic cement compositions and methods of using the set retarded cement compositions for cementing subterranean zones in wells. A preferred set retarding additive comprises an alkanolamine salt produced by the reaction of a hydroxy carboxy acid, such as tartaric acid, gluconic acid or glucoheptonic acid, with an alkanolamine, such as monoethanolamine, diethanolamine or triethanolamine.

Methods of retarding cementitious compositions

The present invention provides cementitious well drilling fluids and methods of drilling subterranean well bores. The drilling fluids are basically comprised of water, a water viscosity increasing material and a cementitious material which when deposited on the walls of the well bore as a part of the filter cake thereon consolidates the filter cake into a stable mass that readily bonds to a cementitious material slurry subsequently placed in the well bore. The methods of drilling a subterranean well bore are basically comprised of the steps of preparing a drilling fluid of the invention and drilling a subterranean well bore using the drilling fluid.

Cementitious well drilling fluids and methods

Set retarded cementing compositions and methods

A method of forming in a desired location in a well bore a dual-state composite of a hardened hydraulic cement and a solid rubber which features the use of a composition consisting essentially of a mixture of a slurry of a hydraulic cement and a vulcanizable rubber latex.

Well completion and remedial methods utilizing cement-ladened rubber

Well completion methods utilizing rubber latex compositions are provided. The compositions are comprised of an aqueous suspension of rubber, a vulcanizing agent and a vulcanization activator, and are placed in a subterranean formation or a well bore at a desired location therein and allowed to vulcanize whereby a solid rubber plug or seal is formed.

Well completion and remedial methods utilizing rubber latex compositions

Growing community of inventors

Comanche, OK, United States of America

Garland W Davis