Patent US3637261A successfully refreshed from Google Patents.
US3637261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Top latch select liner with tailpipe and method of installing
Assignee: Kalium Chemicals Ltd
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Filing: 1969-12-08
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Granted: 1972-01-25
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Expires: 1989-12-08
Abstract
Abstract A top latch select liner is shown which provides for the attachment at the top of a select liner of large pipe assemblies for use in solution mining operations. A method of lowering tailpipes of heavy construction safely into a solution mining cavity is also shown which involves the use of casing fluid and hydraulic pressures so that the pipes can be lowered on wire lines.
Inventors
- 👤 Selby W Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:45
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28; E21B43/02; E21B43/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A method of introducing a tailpipe into a cased borehole having fluid therein comprising attaching a tailpipe to a setting sub constructed and arranged to engage a landing means positioned in said casing and having a liner assembly associated therewith, plugging said tailpipe at the lower end thereof, establishing a fixed clearance between the casing and the setting sub, introducing the tailpipe and setting sub into the casing and thereby controlling the downward movement of the setting sub and attached tailpipe.
Claim 2
Independent Claim
81 words
A method of introducing a tailpipe into a cased borehole having fluid therein comprising attaching a tailpipe to a setting sub constructed and arranged to engage a landing means positioned in said casing and having a liner assembly associated therewith, plugging said tailpipe at the lower end thereof, establishing a fixed clearance between the casing and the setting sub, introducing the tailpipe and setting sub into the casing and thereby controlling the downward movement of the setting sub and attached tailpipe.
Claim 3
Independent Claim
135 words
A method of positioning a conduit in a subterranean cavity comprising, providing a liner in a cased borehole a fixed distance above said cavity, providing on the upper end of said liner a setting sub-engaging means, introducing into said cased borehole a setting sub having a fluid conduit affixed to it and provided with means to couple with said setting sub-engaging means, controlling the descent of the fluid conduit in said cased borehole by establishing a circumference on the setting sub providing a fixed clearance between the setting sub and the casing to thereby control hydraulic pressure applied upwardly on said setting sub and associated conduit by fluid present in said cased borehole at a value such that the rate of descent of the conduit in the cased borehole is maintained at a desired value.
Claim 4
Independent Claim
135 words
A method of positioning a conduit in a subterranean cavity comprising, providing a liner in a cased borehole a fixed distance above said cavity, providing on the upper end of said liner a setting sub-engaging means, introducing into said cased borehole a setting sub having a fluid conduit affixed to it and provided with means to couple with said setting sub-engaging means, controlling the descent of the fluid conduit in said cased borehole by establishing a circumference on the setting sub providing a fixed clearance between the setting sub and the casing to thereby control hydraulic pressure applied upwardly on said setting sub and associated conduit by fluid present in said cased borehole at a value such that the rate of descent of the conduit in the cased borehole is maintained at a desired value.
Claim 5
Dependent Claim
121 words
Apparatus suitable for use in solution mining a subterranean cavity comprising a liner, constructed and arranged to be mounted in a borehole, means at the upper end of said liner for engaging a landing ring, a landing ring affixed to said liner, a latch member associated with said landing ring, a setting sub provided on an upper portion thereof with an expanded shoulder adapted to engage the upper end of said landing ring, the lower end of said setting sub being tapered in part so that it passes through said landing ring and means at the end of said setting sub for engaging a fluid conduit, said setting sub and fluid conduit being in fluid communication with each other when engaged.
Claim 6
Dependent Claim
121 words
Apparatus suitable for use in solution mining a subterranean cavity comprising a liner, constructed and arranged to be mounted in a borehole, means at the upper end of said liner for engaging a landing ring, a landing ring affixed to said liner, a latch member associated with said landing ring, a setting sub provided on an upper portion thereof with an expanded shoulder adapted to engage the upper end of said landing ring, the lower end of said setting sub being tapered in part so that it passes through said landing ring and means at the end of said setting sub for engaging a fluid conduit, said setting sub and fluid conduit being in fluid communication with each other when engaged.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |