US3139931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for selectively cementing pipe casing
Assignee: Individual
•
Filing: 1961-01-19
•
Granted: 1964-07-07
•
Expires: 1981-01-19
Abstract
No abstract record available.
Inventors
- 👤 Altus L Simpson
- 👤 Donald P Hammon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:38
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN APPARATUS FOR CEMENTING A SELECTED PORTION OF WELL CASING IN A BORE HOLE COMPRISING, IN COMBINATION: FIRST AND SECOND PACKING MEANS DISPOSED BETWEEN SAID CASING AND THE SURROUNDING BORE HOLE SIDEWELLS IN LONGITUDINALLY SPACED RELATIONSHIP AT THE UPPER AND LOWER LIMITS RESPECTIVELY OF SAID PORTION TO DEFINE AN ANNULAR SPACE THEREBETWEEN; A MEMBER, HAVING A HOLLOW INTERIOR FOR HOLDING CEMENT, POSITIONABLE IN SAID SELECTED PORTION OF WELL CASING; FIRST AND SECOND COMMUNICATION MEANS BETWEEN THE UPPER AND LOWER ENDS OF SAID ANNULAR SPACE AND THE UPPER AND LOWER ENDS OF THE HOLLOW INTERIOR OF SAID MEMBER RESPECTIVELY; AND CEMENT MOVING MEANS ACTUABLE FROM THE WELL HEAD FOR URGING SAID CEMENT THROUGH SAID SECOND COMMUNICATION MEANS TO SAID ANNULAR SPACE AND FOR DRAWING MATERIAL INTO SAID HOLLOW INTERIOR FROM SAID ANNULAR SPACE THROUGH SAID FIRST COMMUNICATION MEANS; AND MEANS AT THE WELL HEAD FOR EFFECTING ACTUATION OF SAID CEMENT MOVING MEANS.
Claim 2
Independent Claim
151 words
AN APPARATUS FOR CEMENTING A SELECTED PORTION OF WELL CASING IN A BORE HOLE COMPRISING, IN COMBINATION: FIRST AND SECOND PACKING MEANS DISPOSED BETWEEN SAID CASING AND THE SURROUNDING BORE HOLE SIDEWELLS IN LONGITUDINALLY SPACED RELATIONSHIP AT THE UPPER AND LOWER LIMITS RESPECTIVELY OF SAID PORTION TO DEFINE AN ANNULAR SPACE THEREBETWEEN; A MEMBER, HAVING A HOLLOW INTERIOR FOR HOLDING CEMENT, POSITIONABLE IN SAID SELECTED PORTION OF WELL CASING; FIRST AND SECOND COMMUNICATION MEANS BETWEEN THE UPPER AND LOWER ENDS OF SAID ANNULAR SPACE AND THE UPPER AND LOWER ENDS OF THE HOLLOW INTERIOR OF SAID MEMBER RESPECTIVELY; AND CEMENT MOVING MEANS ACTUABLE FROM THE WELL HEAD FOR URGING SAID CEMENT THROUGH SAID SECOND COMMUNICATION MEANS TO SAID ANNULAR SPACE AND FOR DRAWING MATERIAL INTO SAID HOLLOW INTERIOR FROM SAID ANNULAR SPACE THROUGH SAID FIRST COMMUNICATION MEANS; AND MEANS AT THE WELL HEAD FOR EFFECTING ACTUATION OF SAID CEMENT MOVING MEANS.
References Cited (Backward Citations)
US2064336A
Cited
US2187483A
Cited
US2368419A
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US2344120A
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US2308072A
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US2716456A
Cited
US2715943A
Cited
US2769498A
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US2858107A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |