Patent US3126959A successfully refreshed from Google Patents.
US3126959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borehole casing
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:47
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR CASING A BOREHOLE PENETRATING A SUBTERRANEAN FORMATION WHICH COMPRISES LOWERING A CONDUIT HAVING A CASING TOOL CONNECTED TO THE LOWER END THEREOF INTO SAID BOREHOLE, SAID CASING TOOL FORMING A CONFINED ANNULAR SPACE ADJACENT THE BOREHOLE WALL; INTRODUCING A LIQUID POLYMER THAT CAN BE SOLIDIFIED AT ELEVATED TEMPERATURE INTO SAID BOREHOLE THROUGH SAID CONDUIT; INJECTING SAID POLYMER FROM SAID CONDUIT INTO SAID CONFINED ANNULAR SPACE BETWEEN THE BOREHOLE WALL AND SAID CASING TOOL UNDER SUFFICIENT PRESSURE TO FORCE SAID POLYMER A SUBSTANTIAL DISTANCE INTO THE FORMATION; AND HEATING SAID CASING TOOL TO SOLIDIFY SAID POLYMER WHILE MOVING SAID CONDUIT AND TOOL AXIALLY WITHIN SAID BOREHOLE.
Claim 2
Dependent Claim
108 words
A PROCESS FOR CASING A BOREHOLE PENETRATING A SUBTERRANEAN FORMATION WHICH COMPRISES LOWERING A CONDUIT HAVING A CASING TOOL CONNECTED TO THE LOWER END THEREOF INTO SAID BOREHOLE, SAID CASING TOOL FORMING A CONFINED ANNULAR SPACE ADJACENT THE BOREHOLE WALL; INTRODUCING A LIQUID POLYMER THAT CAN BE SOLIDIFIED AT ELEVATED TEMPERATURE INTO SAID BOREHOLE THROUGH SAID CONDUIT; INJECTING SAID POLYMER FROM SAID CONDUIT INTO SAID CONFINED ANNULAR SPACE BETWEEN THE BOREHOLE WALL AND SAID CASING TOOL UNDER SUFFICIENT PRESSURE TO FORCE SAID POLYMER A SUBSTANTIAL DISTANCE INTO THE FORMATION; AND HEATING SAID CASING TOOL TO SOLIDIFY SAID POLYMER WHILE MOVING SAID CONDUIT AND TOOL AXIALLY WITHIN SAID BOREHOLE.
References Cited (Backward Citations)
GB380451A
Cited
US2237313A
Cited
US2366036A
Cited
US2556169A
Cited
US2609052A
Cited
US2892444A
Cited
US2897779A
Cited
US2986212A
Cited
US2944298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |