Halliburton Energy Services, Inc.

David Patrick Duckworth

Ping Sui

B Raghava Reddy

Feng Liang

Gary Eugene Weaver

Micheal Burl Crawford

Mark Evans Williams

Young Ho Lee

Zhaohui Shan

Liwen Wei

The present disclosure relates to elastomer-thermally conductive carbon fiber compositions for use in seals for roller-cone drill bits. The present disclosure further relates to seals formed from such compositions and to roller-cone drill bits containing such seals.

Elastomer-thermally conductive carbon fiber compositions for roller-cone drill bit seals

The present disclosure relates to an intergland grease formed from a base grease and a lubricating intergland grease additive, such as PTFE or a lubricating liquid polymer, such as polybutene. The present disclosure further relates to a roller cone drill bit including such an intergland grease.

Intergland grease

Wellbore tools may use carbon nanoforests to reduce the access of abrasive particles to compressible sealing elements of joints of the wellbore tool. In some instances, a wellbore tool may include a joint comprising two elements having opposing mating surfaces that define a gap; a compressible sealing element arranged between the opposing mating surfaces and configured to seal a portion of the gap, thereby defining a sealed segment and an unsealed segment of the gap; and at least one carbon nanoforest disposed within at least a portion of the unsealed segment and coupled to at least one of the opposing mating surfaces.

Joints comprising carbon nanoforests

A downhole seal system for roller cone drill bits includes a seal gland having a width larger than it depth. In one implementation, the seal gland includes a protrusion along its base on which a seal element seats. The seal element is a single, annular seal element with a recess formed therein so as to define two lobes. The seal element seats in the gland so that the recess engages the protrusion. The lobes function as separate seal elements, although they are a single unitary seal element disposed in a single gland.

Symmetrical seal

An embodiment disclosed herein provides a high-temperature lubricant comprising an oil-soluble lubricating base fluid or a water-soluble lubricating base fluid; and elongated carbon nanoparticles that align in flow. In some embodiments, the lubricating composition may be selected from the group consisting of graphene nanoribbons; carbon nanotubes; carbon nanohorns; and any combination thereof.

High-temperature lubricants comprising elongated carbon nanoparticles for use in subterranean formation operations

The present disclosure relates to greases containing metal sulfonate thickeners. In one example the thickener may be a calcium sulfonate thickener. In other examples grease may contain a combination of a metal sulfonate thickener and another thickener, such as a metal complex soap grease, detergent, or non-soap thickener. The grease may be formulated to meet specific performance criteria relevant to lubrication of a roller cone drill bit in downhole conditions. The disclosure also relates to a roller cone drill bit containing a grease of the disclosure.

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Conroe, TX, United States of America

David Patrick Duckworth