Halliburton Energy Services, Inc.

Jonathan Paul Walker

Sharath Savari

Chesnee Lae Davis

Jay Paul Deville

Dale E Jamison

Cato Russell McDaniel

Xiangnan Ye

Donald Lee Whitfill

Philip Wayne Livanec

Matthew Lynn Miller

Lee Jeremy Hall

Jeffrey James Miller

Katerina V Newman

Yerzhan Ayapbergenov

Particulate additives that may be useful in mitigating fluid loss and/or as bridging agents or diverting agents in subterranean treatment fluids such as drilling fluids. In some embodiments, the particulate additives include a polymeric material and calcium carbonate disposed on at least a portion of the outer surface of the polymer core wherein the particulates have a particle size (d50) of from about 2 μm to about 1600 μm in diameter. In some embodiments, the methods include providing a treatment fluid that includes the base fluid and the particulate additives and introducing the treatment fluid into at least a portion of a subterranean formation.

Calcium carbonate/polymer particulate additives for use in subterranean operations

Methods including precipitated and mined calcium carbonate lost circulation materials for use in subterranean formation operations. The precipitated calcium carbonate lost circulation materials are formed under a chosen set of precipitation conditions, including in situ in a subterranean formation. The mined calcium carbonate lost circulation materials are obtained in a desired morphological form under naturally occurring mined conditions. The precipitated and mined calcium carbonate lost circulation materials may be needle-shaped aragonite having an aspect ratio of about 1.4 to about 15.

Calcium carbonate lost circulation material morphologies for use in subterranean formation operations

Various embodiments disclosed relate to methods of cleaning invert emulsion drilling fluids. In various embodiments, the present invention provides a method of cleaning a drilling fluid. The method includes cleaning a used invert emulsion drilling fluid that includes drilled cuttings to form a cleaned invert emulsion drilling fluid. The cleaning includes processing the used invert emulsion drilling fluid in a separator to remove at least some of the drilled cuttings therefrom.

Methods of cleaning invert emulsion drilling fluids

Lost circulation compositions, systems, and methods of using the same are described. A lost circulation composition comprises a water-swellable starch graft copolymer; and a carrier fluid. A method for bridging a lost circulation zone comprises providing a lost circulation composition comprising a water-swellable starch graft copolymer and a carrier fluid. Then introducing the lost circulation composition into a wellbore within a subterranean formation, wherein the subterranean formation comprises a lost circulation zone. Finally the lost circulation composition is placed into the lost circulation zone.

Water swellable lost circulation materials

Among the methods provided is a method comprising: providing an oil-based fluid formed by combining components that comprise a glycol ether additive comprising a glycol ether, wherein the glycol ether additive substantially increases the low-shear viscosity of the oil-based fluid at temperatures between approximately 120 degrees Fahrenheit (48.9 degrees Celsius) and 500 degrees Fahrenheit (260 degrees Celsius); and using the oil-based fluid to drill at least a portion of a well bore penetrating at least a portion of a subterranean formation.

Thermal thickening in invert emulsion treatment fluids

Among the methods provided is a method comprising: providing an invert emulsion fluid formed by combining components that comprise: an oil-based continuous phase; an aqueous discontinuous phase; and a glycol ether additive that comprises a glycol ether and using the invert emulsion fluid to drill at least a portion of a well bore penetrating at least a portion of a subterranean formation.

Highly resilient carbon-based materials having a resiliency greater than about 120% at 10,000 psi may be useful as lost circulation materials (LCMs) for wellbore strengthening and lost circulation mitigation in downhole operations in subterranean formations with depleted zones. For example, a downhole method may include drilling at least a portion of a wellbore penetrating a subterranean formation with at least one depleted zone having a plurality of fractures extending from the wellbore into the at least one depleted zone; circulating a treatment fluid through the wellbore, the treatment fluid comprising a base fluid and a resilient carbon-based material having a resiliency greater than about 120% at 10,000 psi; contacting the at least one depleted zone with the resilient carbon-based material; and plugging at least some of the plurality of fractures in the at least one depleted zone with the resilient carbon-based material.

Resilient carbon-based materials as lost circulation materials and related methods

A treatment fluid comprising: a base fluid; a plurality of a first type of fiber, wherein the first type of fiber is degradable; a plurality of a second type of fiber; and a third lost-circulation material, wherein the first type of fibers, the second type of fibers, and the third lost-circulation material inhibit or prevent some or all of the treatment fluid from penetrating into a subterranean formation from a wellbore, wherein the wellbore penetrates the subterranean formation.

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Cypress, TX, United States of America

Jonathan Paul Walker