Patent US3387658A successfully refreshed from Google Patents.
US3387658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer apparatus
Assignee: Schlumberger Technology Corp
•
Filing: 1966-08-03
•
Granted: 1968-06-11
•
Expires: 1986-08-03
Abstract
No abstract record available.
Inventors
- 👤 Maurice P Lebourg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:03
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/12955
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
APPARATUS FOR USE IN A WELL COMPRISING: INNER AND OUTER TUBULAR MEMBERS TELESCOPICALLY MOVABLE BETWEEN SPACED LONGITUDINAL POSITIONS, SAID INNER MEMBER BEING ADAPTED FOR CONNECTION TO A TUBULAR STRING EXTENDING TO THE EARTH''S SURFACE; HYDRAULICALLY OPERABLE MEANS FOR ANCHORING SAID OUTER MEMBER IN A WELL CONDUIT; A FIRST PASSAGEWAY BETWEEN SAID MEMBERS THROUGH WHICH WELL FLUIDS CAN BYPASS; A SECOND PASSAGEWAY IN SAID MEMBERS COMMUNICATING WITH SAID HYDRAULICALLY OPERABLE MEANS; VALVE MEANS BETWEEN SAID MEMBERS OPERABLE WHEN SAID MEMBERS ARE IN ONE OF SAID POSITIONS TO PREVENT BYPASS OF FLUIDS THROUGH SAID FIRST PASSAGEWAY; MEANS COMMUNICATING SAID FIRST AND SECOND PASSAGEWAYS WHEREBY FLUID PRESSURE CAN ACT THROUGH SAID PASSAGEWAYS AND COMMUNICATING MEANS TO OPERATE SAID HYDRAULICALLY OPERABLE MEANS; AND MOVABLE BARRIER MEANS IN SAID SECOND PASSAGEWAY.
Claim 2
Dependent Claim
126 words
APPARATUS FOR USE IN A WELL COMPRISING: INNER AND OUTER TUBULAR MEMBERS TELESCOPICALLY MOVABLE BETWEEN SPACED LONGITUDINAL POSITIONS, SAID INNER MEMBER BEING ADAPTED FOR CONNECTION TO A TUBULAR STRING EXTENDING TO THE EARTH''S SURFACE; HYDRAULICALLY OPERABLE MEANS FOR ANCHORING SAID OUTER MEMBER IN A WELL CONDUIT; A FIRST PASSAGEWAY BETWEEN SAID MEMBERS THROUGH WHICH WELL FLUIDS CAN BYPASS; A SECOND PASSAGEWAY IN SAID MEMBERS COMMUNICATING WITH SAID HYDRAULICALLY OPERABLE MEANS; VALVE MEANS BETWEEN SAID MEMBERS OPERABLE WHEN SAID MEMBERS ARE IN ONE OF SAID POSITIONS TO PREVENT BYPASS OF FLUIDS THROUGH SAID FIRST PASSAGEWAY; MEANS COMMUNICATING SAID FIRST AND SECOND PASSAGEWAYS WHEREBY FLUID PRESSURE CAN ACT THROUGH SAID PASSAGEWAYS AND COMMUNICATING MEANS TO OPERATE SAID HYDRAULICALLY OPERABLE MEANS; AND MOVABLE BARRIER MEANS IN SAID SECOND PASSAGEWAY.
References Cited (Backward Citations)
US3112795A
Cited
US3211227A
Cited
US3233675A
Cited
US3277965A
Cited
US3283819A
Cited
US3338308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |