Wellbore isolation devices with slip bands and wear bands having modified surfaces
AssigneeHalliburton Energy Services, Inc.
InventorsMichael Linley FRIPP, John Charles GANO, Zachary William WALTON
Life of this patent
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Abstract
Wellbore isolation devices may be produced with wear bands and slips having modified surfaces to change the frictional properties between these components and the surrounding wellbore surface. For example, a wellbore isolation device may include: a mandrel; slips disposed circumferentially about the mandrel and in a first position along the mandrel, wherein the slips comprise particles coupled thereto forming a modified surface, and wherein the particles comprise at least some sharp protrusions; and at least one packer element disposed along the mandrel and in a second position along the mandrel.
Claims22
A method comprising:
- introducing a wellbore isolation device in an unset position into a wellbore penetrating a subterranean formation, the wellbore isolation device comprising a mandrel, slips disposed circumferentially about the mandrel and in a first position along the mandrel, and at least one packer element disposed in a second position along the mandrel, wherein the slips comprise particles coupled thereto forming a modified surface, and wherein the particles comprise sharp protrusions;
- actuating the wellbore isolation device from the unset position to a set position within the wellbore;
- frictionally engaging the modified surface of the slips with a wellbore surface when the wellbore isolation device is in the set position;
- and
- compressing the at least one packer element against the wellbore surface when the wellbore isolation device is in the set position.
A wellbore isolation device comprising:
- a mandrel;
- slips disposed circumferentially about the mandrel and in a first position along the mandrel, wherein the slips comprise particles coupled thereto forming a modified surface, and wherein the particles comprise at least some sharp protrusions;
- and
- at least one packer element disposed along the mandrel and in a second position along the mandrel.
(canceled)
A wellbore isolation device comprising:
- a mandrel;
- slips disposed circumferentially about the mandrel and in a first position along the mandrel;
- at least one packer element disposed along the mandrel and in a second position along the mandrel;
- and
- a mule shoe secured to the mandrel at a lower end of the wellbore isolation device, wherein the mule shoe comprises second particles coupled thereto forming a second modified surface, and wherein the second particles comprise smooth surfaces substantially absent of sharp protrusions.
(canceled)
Dependencies are inferred from the claim text.