US3559733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packers
Assignee: Dresser Industries Inc
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Filing: 1969-05-01
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Granted: 1971-02-02
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Expires: 1989-05-01
Abstract
Abstract A packing element support for well packers to prevent movement of the packing element between the anchoring means of the packer and the well bore, the support comprising an annular body with a gap therein and a curved member carried by said body bridging said gap. A well packer carrying at least one packing element support of this invention.
Inventors
- 👤 Marion D Kilgore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:48
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/1208; E21B33/1216; E21B33/129; E21B33/1293
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
173 words
In a well packer having a mandrel, spaced apart anchoring means on the mandrel, a packing element between said anchoring means, and means for setting the anchoring means in a well bore, the improvement comprising at least one packing element support associated with each of said anchoring means so that said support encircles said mandrel and expand upon setting of the anchoring means to form a block between said anchoring means and said well bore thereby preventing movement of said packing element between said anchoring means and said well bore during and after setting of said anchoring means, said packing element support including: an annular, hollow body having a segment of the body removed to provide a gap in said body; a member carried by said body and movable relative thereto, said member being curved in accord with said body and being of a length greater than said gap; and stop means carried by at least one of said body and said member for positioning said member so that it bridges said gap.
Claim 2
Dependent Claim
173 words
In a well packer having a mandrel, spaced apart anchoring means on the mandrel, a packing element between said anchoring means, and means for setting the anchoring means in a well bore, the improvement comprising at least one packing element support associated with each of said anchoring means so that said support encircles said mandrel and expand upon setting of the anchoring means to form a block between said anchoring means and said well bore thereby preventing movement of said packing element between said anchoring means and said well bore during and after setting of said anchoring means, said packing element support including: an annular, hollow body having a segment of the body removed to provide a gap in said body; a member carried by said body and movable relative thereto, said member being curved in accord with said body and being of a length greater than said gap; and stop means carried by at least one of said body and said member for positioning said member so that it bridges said gap.
Claim 3
Dependent Claim
65 words
The well packer according to claim 1 wherein each of said spaced apart anchoring means comprises slips having inner tapered surfaces, an expander member spaced from said slips, said expander member having an outer tapered surface that mates with the inner tapered surface of said slips, said packing element support being carried about said mandrel in said space between said slips and said expander member.
Claim 4
Dependent Claim
60 words
The well packer according to claim 1 wherein said member extends internally of said body for less than half the circumference of the body, and stop means is surface indentations in said body which extend into the hollow interior of said body, said indentations being at either end of said member to hold said member in place bridging said gap.
Claim 5
Dependent Claim
79 words
The well packer according to claim 1 where said member extends internally of said body for substantially the total circumference of said body, said member having a removed portion to provide a gap therein, and said stop means is at least one surface indentation in said body which extends into the hollow interior of said body, at least one indentation being positioned away from said gap in said body and also being positioned in said gap in said member.
Claim 6
Dependent Claim
123 words
A packing element support for well packers comprising: an annular, hollow body having a segment of the body removed to provide a gap in said body; a member carried by said body and movable relative thereto, said member being curved in accord with said body and extending internally of said body for less than half the circumference of said body and being of a length greater than the length of said gap; and stop means carried by said body for positioning said member so that it bridges said gap, said stop means being surface indentations in said body which extend into the hollow interior of said body at either end of said member whereby said member is held in place bridging said gap.
Claim 7
Dependent Claim
123 words
A packing element support for well packers comprising: an annular, hollow body having a segment of the body removed to provide a gap in said body; a member carried by said body and movable relative thereto, said member being curved in accord with said body and extending internally of said body for less than half the circumference of said body and being of a length greater than the length of said gap; and stop means carried by said body for positioning said member so that it bridges said gap, said stop means being surface indentations in said body which extend into the hollow interior of said body at either end of said member whereby said member is held in place bridging said gap.
Claim 8
Dependent Claim
134 words
A packing element support for well packers comprising: an annular, hollow body having a segment of the body removed to provide a gap in said body; a member carried by said body and movable relative thereto, said member being curved in accord with said body and extending internally of said body for substantially the total circumference of said body and having a removed portion to provide a gap therein; and stop means carried by said body for positioning said member so that it bridges said gap in said body, said stop means being at least one surface indentation in said body which extends into the hollow interior of said body, said at least one indentation being positioned away from said gap in said body and also being positioned in said gap in said member.
Claim 9
Dependent Claim
134 words
A packing element support for well packers comprising: an annular, hollow body having a segment of the body removed to provide a gap in said body; a member carried by said body and movable relative thereto, said member being curved in accord with said body and extending internally of said body for substantially the total circumference of said body and having a removed portion to provide a gap therein; and stop means carried by said body for positioning said member so that it bridges said gap in said body, said stop means being at least one surface indentation in said body which extends into the hollow interior of said body, said at least one indentation being positioned away from said gap in said body and also being positioned in said gap in said member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |