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US 12,428,546 B2Granted
Elastomer compounds for use within a borehole
AssigneeHalliburton Energy Services, Inc.
InventorsByong Jun Kim, James H. Ryan, Charles Timothy Smith, Shashishekara Talya
Life of this patent
Estimating the term…
Abstract
A downhole tool including a downhole motor. The downhole motor may include a housing, a stator positioned within the housing, and a rotor positioned within the stator. The stator may include an elastomer compound that may include at least one of NBR or HNBR, process aids, and at least one of zinc oxide or graphite.
Claims9
A downhole tool comprising a downhole motor, the downhole motor comprising:
- a housing;
- a stator positioned within the housing and comprising an elastomer compound comprising:
- at least one of nitrile butadiene rubber (“NBR”) or hydrogenated nitrile butadiene rubber (“HNBR”);
- carbon black;
- process aids;
- and
- graphite,
- wherein a total amount of the carbon black is less than 100 parts per hundred rubber (“PHR”), a total amount of the process aids is less than 20 PHR, and a total amount of the graphite is less than 100 PHR;
- and a rotor positioned within the stator.
6 more elements
An elastomer compound for use within a borehole, the elastomer compound comprising:
- at least one of nitrile butadiene rubber (“NBR”) or hydrogenated nitrile butadiene rubber (“HNBR”);
- carbon black;
- process aids;
- graphite;
- and
- zinc oxide,
- wherein a total amount of the carbon black is less than 100 parts per hundred rubber (“PHR”), a total amount of the process aids is less than 20 PHR, a total amount of the graphite is less than 100 PHR, and a total amount of zinc oxide is less than 100 PHR;
- wherein the amount of carbon black is less due to inclusion of the graphite while at least one of lubricity or thermal conductivity of the elastomer compound is maintained or improved as compared to an elastomer compound without graphite,
- wherein inclusion of graphite and zinc oxide improves elongation of the elastomer compound as compared to an elastomer compound without graphite and zinc oxide, and
- wherein a total amount of the process aids and the graphite is between 50 and 120 parts per hundred rubber (“PHR”).
7 more elements
Dependencies are inferred from the claim text.