Methods of using cellulose in various oilfield applications
AssigneeSchlumberger Technology Corporation
InventorsAlhad Phatak, Carlos Abad
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Abstract
Described herein is a method of well treatment that includes providing a well treatment composition containing a non-functionalized cellulose material and a halide salt composition containing at least zinc halide, calcium halide or a mixture thereof, and placing the well treatment composition within a wellbore or a subterranean formation, and wherein the halide salt composition dissolves at least a portion of the non-functionalized cellulose material.
Claims19
A method of well treatment, the method comprising:
- providing a well treatment composition comprised of a non-functionalized cellulose material and a halide salt composition comprised of at least zinc halide, calcium halide or a mixture thereof, and
- placing the well treatment composition within a wellbore or a subterranean formation, and
- wherein the halide salt composition dissolves at least a portion of the non-functionalized cellulose material.
A method of well treatment, the method comprising:
- providing a well treatment composition comprised of a non-functionalized cellulose material and a halide solvent composition,
- heating the composition to a temperature of at least 150° F. to dissolve the non-functionalized cellulose,
- pumping a chemical species into the wellbore, and
- reacting the chemical species with dissolved non-functionalized cellulose material to form a functionalized cellulose.
The method of claim 24, wherein the functionalized cellulose is capable of reacting with one or more materials selected from the group consisting of crosslinkers and breakers.
Dependencies are inferred from the claim text.