Downhole mud motor and method of improving durabilty thereof

Inactive Publication Date: 2010-05-06
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Downhole tools used in the hydrocarbon recovery industry often experience extreme conditions, such as, high temperatures and high pressures, for ex

Method used

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  • Downhole mud motor and method of improving durabilty thereof
  • Downhole mud motor and method of improving durabilty thereof
  • Downhole mud motor and method of improving durabilty thereof

Examples

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Embodiment Construction

[0009]A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.

[0010]Referring to FIGS. 1-3, an embodiment of a downhole mud motor 10 disclosed herein is illustrated. The mud motor 10, among other things, includes, a stator 14, a rotor 18 and a polymer 22, also referred to herein as an elastomer, positioned between the stator 14 and the rotor 18. Mud 26, pumped through the mud motor 10 flows through cavities 30 defined by clearances between lobes 34 of the stator 14 and the elastomer 22 and lobes 38 of the rotor 18. The mud 26, being pumped through the cavities 30, causes the rotor 18 to rotate relative to the stator 14 and the elastomer 22. The elastomer 22 is sealingly engaged with both the stator 14 and the rotor 18 to minimize leakage therebetween that could have a detrimental effect on the performance and efficiency of the mud motor 10. The elastomer 22...

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Abstract

Disclosed herein is a downhole mud motor. The mud motor includes, a stator, a rotor in operable communication with the stator, a polymer in operable communication with the stator and the rotor, and a plurality of carbon nanotubes embedded in the polymer.

Description

BACKGROUND[0001]Downhole tools used in the hydrocarbon recovery industry often experience extreme conditions, such as, high temperatures and high pressures, for example. These high temperatures can be elevated further by heat generated in by the tools themselves. Mud motors, for example, can generate additional heat during operation thereof. Materials used to fabricate the various components that make up the downhole tools are therefore carefully chosen for their ability to operate, often for long periods of time, in these extreme conditions.[0002]Many polymeric materials have maximum operating temperature ranges, that when exceeded, result in early failure of components made therefrom. Advancements in the field that allow tools to operate below these temperature ranges are well received in the art.BRIEF DESCRIPTION[0003]Disclosed herein is a downhole mud motor. The mud motor includes, a stator, a rotor in operable communication with the stator, a polymer in operable communication w...

Claims

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Application Information

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IPC IPC(8): E21B4/00
CPCE21B4/02F01C1/101F01C1/107F01C5/04F01C5/06F01C21/104F03C2/08F04C2/107F04C2/1071F04C2/1075
InventorJOHN, HENDRIKKRUEGER, VOLKERJUNG, THOMASFROEHLICH, DIRK
OwnerBAKER HUGHES INC