Engineered methods and materials for wellbore strengthening in subterranean operations
AssigneeHalliburton Energy Services, Inc.
InventorsArunesh Kumar, Sharath Savari, Donald L. Whitfill, Dale E. Jamison
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Abstract
A method of wellbore strengthening may include providing a wellbore strengthening fluid comprising a drilling fluid, a particulate, and a fiber; introducing the wellbore strengthening fluid into a wellbore penetrating a subterranean formation; and forming a plug comprising the particulate and the fiber in a void near the wellbore, the plug being capable of maintaining integrity at about 1000 psi or greater overbalance pressure.
Claims16
A method of drilling a wellbore, the method comprising:
- introducing a pill comprising a wellbore strengthening fluid that comprises a first drilling fluid, a particulate, and a fiber into a section of a wellbore penetrating a subterranean formation, wherein the fiber has an aspect ratio of greater than about 5 and a length of about 2500 microns to about 6000 microns;
- forming a plug comprising the particulate and the fiber in a void near the wellbore, the plug having a plug breaking pressure of greater than about 1000 psi thereby yielding a strengthened wellbore section;
- and
- passing a second drilling fluid through the strengthened wellbore section.
A method of drilling a wellbore, the method comprising:
- introducing a pill comprising a wellbore strengthening fluid that comprises a first drilling fluid, a particulate, and a fiber into a section of a wellbore penetrating a subterranean formation, wherein the first drilling fluid comprises an oleaginous continuous phase and a polar organic molecule and wherein the fiber has a length of about 2500 microns to about 6000 microns;
- forming a plug comprising the particulate and the fiber in a void near the wellbore, the plug having a plug breaking pressure of greater than about 1000 psi thereby yielding a strengthened wellbore section;
- and
- passing a second drilling fluid through the strengthened wellbore section.
A wellbore strengthening fluid comprising:
- a drilling fluid, a particulate, and a fiber capable of forming a plug with a plug breaking pressure greater than about 1000 psi, wherein the fiber has an aspect ratio of greater than about 5 and a length of about 2500 microns to about 6000 microns.
Dependencies are inferred from the claim text.