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US 7,897,545 B2Granted
Fluid loss compositions and methods of use for subterranean operations
AssigneeHalliburton Energy Services, Inc.
InventorsSteve F. Wilson, Jimmie D. Weaver, Karen Savery
Life of this patent
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Abstract
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.
Claims20
A method comprising:
- providing a low molecular weight crosslinkable polymer and a crosslinking agent;
- introducing the low molecular weight crosslinkable polymer and the crosslinking agent into at least a portion of a subterranean formation;
- allowing the crosslinking agent to crosslink at least a portion of the low molecular weight crosslinkable polymer to form a gel that comprises the low molecular weight crosslinkable polymer and the crosslinking agent;
- providing a mutual solvent capable of facilitating the separation of water from the fluid loss additive particulate;
- and
- forming the gel into a plurality of particulates.
3 more elements
A method comprising:
- providing a solution comprising an aqueous base fluid and a low molecular weight crosslinkable polymer and a crosslinking agent;
- allowing the crosslinking agent to crosslink at least a portion of the low molecular weight crosslinkable polymer;
- shearing the solution to generate a fluid loss additive gel that comprises the low molecular weight crosslinkable polymer and the crosslinking agent;
- forming the fluid loss additive gel into at least one fluid loss additive particulate;
- and,
- providing a mutual solvent capable of facilitating the separation of water from the fluid loss additive particulate.
3 more elements
A method comprising:
- providing a treatment fluid the comprises a base fluid, a low molecular weight crosslinkable polymer and a crosslinking agent capable of crosslinking the low molecular weight crosslinkable polymer;
- wherein the low molecular weight crosslinkable polymer is present in the treatment fluid in an amount of from about 300 pounds to about 600 pounds per thousand gallons of treatment fluid;
- allowing the crosslinking agent to crosslink at least a portion of the low molecular weight crosslinkable polymer to form a gel that comprises the low molecular weight crosslinkable polymer and the crosslinking agent;
- forming the gel into a plurality of particulates that comprise the low molecular weight crosslinkable polymer and the crosslinking agent;
- and,
- introducing the treatment fluid comprising plurality of particulates into at least a portion of a subterranean formation.
3 more elements
Dependencies are inferred from the claim text.