Halliburton Energy Services, Inc.

Karen Savery

Bradley Leon Todd

Jimmie Dean Weaver, Jr

Rajesh Kumar Saini

Steve F Wilson

Methods relating to the hydrolysis of water-hydrolysable materials are provided. In one embodiment, a method of treating at least a portion of a subterranean formation is provided, the method comprising: providing a water-hydrolysable material; introducing the water-hydrolysable material into a well bore penetrating the subterranean formation; providing a treatment fluid comprising an aqueous liquid and a water-miscible solvent; introducing the treatment fluid into the well bore so as to contact the water-hydrolysable material; and allowing the water-hydrolysable material to hydrolyze. Methods of completing a well also are provided.

Methods and compositions relating to the hydrolysis of water-hydrolysable materials

Treatments fluids relating to the hydrolysis of water-hydrolysable materials are provided. In one embodiment, provided is a treatment fluid that comprises an aqueous liquid, a water-miscible solvent, and a water-hydrolysable material. Also provided is a hydrolysis retarder composition that comprises an aqueous liquid and a water-miscible solvent.

Additives that may be useful in preventing fluid loss in certain subterranean formations and associated methods of use are provided. In one embodiment, the methods of the present invention comprise: providing a low molecular weight crosslinkable polymer and a crosslinking agent capable of crosslinking the low molecular weight crosslinkable polymer; and introducing the low molecular weight crosslinkable polymer and the crosslinking agent into at least a portion of a subterranean formation.

Fluid loss compositions and methods of use for subterranean operations

Provided herein are methods and compositions for generating acids for use downhole, for example, to break fluid-loss control pills. The delayed-release acid breakers of the present invention comprise orthoesters and/or poly(orthoesters).

Fluid-loss control pills comprising breakers that comprise orthoesters and/or poly(orthoesters) and methods of use

One example of the many methods provided includes a method comprising: providing a fluid loss control pill that comprises an aqueous base fluid, a cellulose derivative and a dual functional component, the fluid loss control pill having a first viscosity; allowing the dual functional component to interact with the cellulose derivative in the fluid loss control pill such that the viscosity of the fluid loss control pill increases to a second viscosity, the second viscosity being greater than the first viscosity; placing the fluid loss control pill in a subterranean formation; and allowing the dual functional component to interact with the cellulose derivative so as to reduce the second viscosity of the fluid loss control pill to a third viscosity, the third viscosity being less than the second viscosity.

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Duncan, OK, United States of America

Karen Savery