Sealing devices and related methods for oil and gas applications
AssigneeSaudi Arabian Oil Company
InventorsRichard Mark Pye, Hashim Awwami, Abdulrahman Assiri
Life of this patent
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Abstract
A sealing device includes a first ring that is fixedly attached to a pipe segment, a second ring that is movably secured to the pipe segment and spaced axially apart from the first ring in an initial configuration of the sealing device, and a third ring that axially overlaps a first wall portion of the first ring and a second wall portion of the second ring, wherein the third ring is expandable radially to accommodate a third wall portion of the first ring and a fourth wall portion of the second ring within an interior region of the third ring.
Claims20
A sealing device comprising:
- a first ring that is fixedly attached to a pipe segment;
- a second ring that is movably secured to the pipe segment and spaced axially apart from the first ring in an initial configuration of the sealing device;
- and
- a third ring that axially overlaps a first wall portion of the first ring and a second wall portion of the second ring, wherein the third ring is expandable radially to accommodate a third wall portion of the first ring and a fourth wall portion of the second ring within an interior region of the third ring,
- wherein the second ring comprises a latch that is configured to engage a surrounding pipe segment.
A method of a sealing an annular region, the method comprising:
- moving a first pipe segment within a second pipe segment to a first downhole position, the first and second pipe segments defining the annular region therebetween, and the first pipe segment carrying a sealing device that comprises:
- a first ring that is fixedly attached to the first pipe segment,
- a second ring that is movably secured to the first pipe segment, and
- a third ring that axially overlaps a first wall portion of the first ring and a second wall portion of the second ring;
- causing cement to move along the annular region;
- moving the first pipe segment within the second pipe segment to a second downhole position at which a latch of the second ring is retained within a groove of the second pipe segment;
- and
- expanding the third ring radially outward to contact the second pipe segment and seal the annular region.
A sealing device comprising:
- a first ring that is fixedly attached to a pipe segment;
- a second ring that is movably secured to the pipe segment and spaced axially apart from the first ring in an initial configuration of the sealing device;
- and
- a third ring that axially overlaps a first wall portion of the first ring and a second wall portion of the second ring, wherein the third ring is expandable radially to accommodate a third wall portion of the first ring and a fourth wall portion of the second ring within an interior region of the third ring,
- wherein the second ring comprises multiple circumferential ribs that engage the third ring and progressively increase in height along a central axis of the sealing device.
Dependencies are inferred from the claim text.