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Methods and compositions for carrier fluids comprising water-absorbent fibers

a carrier fluid and fiber technology, applied in fluid removal, chemistry apparatus and processes, borehole/well accessories, etc., can solve the problems of significant reduction of fracture conductivity under closure, limited usefulness of many of these fluids,

Inactive Publication Date: 2006-02-16
HALLIBURTON ENERGY SERVICES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] Another embodiment of the present invention provides a slurry suitable for use in subterranean operations comprising a servicing fluid, particulates, and a degradable, water-absorbent material wherein the degradable, water-absorbent material acts to help keep the particulates from settling out of the slurry.

Problems solved by technology

Unfortunately, many of these fluids exhibit limited usefulness, due ate least in part to the fact that after the placement of proppant inside the fracture, the fibers remain within the proppant pack, plugging the pore spaces between the proppant particulate, and causing the fracture conductivity to be significantly diminished under closure stresses.

Method used

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Embodiment Construction

[0013] The present invention relates to hydraulic fracturing treatments. More particularly, the present invention relates to methods and compositions for carrier fluids comprising water-absorbent fibers.

[0014] In accordance with the present invention, a carrier fluid comprising degradable, water-absorbent material (preferably in the form of fibers) may be used to effectively transport particulates down hole. The use of degradable, water-absorbent material to increase a fluid's ability to transport proppant in place of or in addition to conventional gelling agents (such as guars) may allow the fluid to carry the particulates with less sensitivity to well conditions (e.g., permeability, fluid loss, temperature). After the transport and placement of the particulates in a fracture or a well bore, the water-absorbent fibers are allowed to degrade. In some embodiments, the degradation of the water-absorbent fibers occurs relatively quickly such that the degradation products are returned ...

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PUM

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Abstract

The present invention relates to methods and compositions for carrier fluids comprising water-absorbent fibers. One embodiment of the present invention provides a method of treating a portion of a subterranean formation, comprising providing a slurry wherein the slurry comprises a servicing fluid, particulates, and a degradable, water-absorbent material wherein the degradable, water-absorbent material acts to help keep the particulates from settling out of the slurry; and, introducing the slurry into the portion of the subterranean formation. Another embodiment of the present invention provides a slurry suitable for use in subterranean operations comprising a servicing fluid, particulates, and a degradable, water-absorbent material wherein the degradable, water-absorbent material acts to help keep the particulates from settling out of the slurry.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to hydraulic fracturing treatments. More particularly, the present invention relates to methods and compositions for carrier fluids comprising water-absorbent fibers. [0002] Servicing fluids comprising suspended or slurried particulates are used in a variety of operations and treatments performed in oil and gas wells. Such operations and treatments include, but are not limited to, well completion operations such as fracturing, gravel packing, and frac-packing. [0003] An example of a production stimulation operation using a servicing fluid having particles suspended therein is hydraulic fracturing. That is, a type of servicing fluid referred to in the art as a fracturing fluid is pumped through a well bore into a subterranean zone to be stimulated at a rate and pressure such that fractures are formed and extended into the subterranean zone. The fracture or fractures may be horizontal or vertical, with the latter usually...

Claims

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Application Information

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IPC IPC(8): E21B43/12
CPCC09K8/68
Inventor NGUYEN, PHILIP D.
Owner HALLIBURTON ENERGY SERVICES INC
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