Seal element with profiled surface for a downhole tool in a wellbore
AssigneeHalliburton Energy Services, Inc.
InventorsShobeir Pirayeh Gar, Xiaoguang Allan Zhong, Michael Linley Fripp
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Abstract
A seal element for providing a seal in a wellbore comprises a bonded seal with profiled surface that extends beyond a surface of a sleeve that includes the bonded seal with the profile surface, wherein the profiled surface of the bonded seal is to face a surface of a housing to form the seal, wherein the bonded seal with profiled surface has an asymmetric shape that comprises a back angle that is an acute angle.
Claims20
A seal element for providing a seal in a wellbore, the seal element comprising:
- a bonded seal to be formed within a gland of a sleeve, the bonded seal with a profiled surface that extends beyond a surface of the sleeve, wherein the profiled surface of the bonded seal is to face a surface of a housing to form a seal, wherein the bonded seal with the profiled surface has an asymmetric shape that comprises a back angle that is an acute angle defined by the profiled surface that extends in a straight line to reach a bottom surface of the gland to form a void within the gland, wherein a volume of the void divided by a volume of the gland defines a void index between 0.25 and 0.45, the void index having a variance of +/−10%.
A method for forming a seal element in a sleeve for operation in a wellbore, the method comprising:
- molding rubber into a seal gland of the sleeve, wherein the rubber is to extend beyond a side of the sleeve where the seal gland is located;
- and
- machining a surface of the rubber to profile the seal element with a profiled surface having an asymmetric shape that comprises a back angle that is an acute angle defined by the profiled surface that extends in a straight line to reach a bottom surface of the gland to form a void within the gland, wherein a volume of the void divided by a volume of the gland defines a void index between 0.25 and 0.45, the void index having a variance of +/−10%.
A downhole tool to be positioned in a wellbore, the downhole tool comprising:
- a sleeve to cyclically support a load, the sleeve comprising,
- at least one seal element to provide a seal, wherein the at least one seal element comprises,
- a bonded seal with a profiled surface that extends beyond a surface of the sleeve that includes the bonded seal with the profile surface formed in a gland of the sleeve, wherein the profiled surface of the bonded seal is to face a surface of a housing to form the seal, wherein the bonded seal with the profiled surface has an asymmetric shape that comprises a back angle that is an acute angle defined by the profiled surface that extends in a straight line to reach a bottom surface of the gland to form a void within the gland, wherein a volume of the void divided by the volume of the gland defines a void index between 0.25 and 0.45, the void index having a variance of +/−10%.
Dependencies are inferred from the claim text.