US3324948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for moving tools and devices in pressured well bores on flexible supporting members
Assignee: ConocoPhillips Co
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Filing: 1964-09-23
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Granted: 1967-06-13
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Expires: 1984-09-23
Abstract
No abstract record available.
Inventors
- 👤 Maston L Powers
- 👤 William L Martin
- 👤 John D Alexander
- 👤 Glen P Willhite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:44
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243; E21B23/00; E21B23/08; E21B36/00; E21B36/02; E21B36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
THE METHOD OF LOWERING INTO A WELL A DEVICE SUSPENDED ON AN ELONGATED FLEXIBLE MEMBER COMPRISING: POSITIONING A MOTION CONTROL PISTON AROUND SAID FLEXIBLE MEMBER ADJACENT SAID DEVICE TO FORM A SEAL WITH THE WALLS OF SAID WELL; APPLYING FLUID PRESSURE TO THE UPPER SURFACE OF SAID MOTION CONTROL PISTON SUFFICIENT TO FORCE SAID PISTON, FLEXIBLE MEMBER AND SUSPENDED DEVICE DOWNWARDLY IN THE WELL; AFTER SAID DEVICE AND FLEXIBLE MEMBER HAVE BEEN LOWERED TO THE SHALLOWEST DEPTH IN THE WELL AT WHICH THE WEIGHT OF SAID DEVICE AND THE PORTION OF THE FLEXIBLE MEMBER IN THE WELL EXCEEDS THE MAXIMUM FORCE DUE TO FLUID PRESSURE ACTING UPWARDLY IN SAID WELL BORE, FORMING A FLUID PASSAGEWAY BY PASSING SAID MOTION CONTROL PISTON TO EQUALIZE THE PRESSURE ON OPPOSITE SIDES THEREOF; THEN CONTINUING TO LOWER SAID DEVICE IN SAID WELL BORE TO THE DEPTH DESIRED UNDER GRAVITATIONAL INFLUENCE.
Claim 2
Dependent Claim
224 words
APPARATUS FOR LOWERING A DEVICE SUSPENDED ON AN ELONGATED FLEXIBLE SUPPORTING MEMBER INTO A WELL TUBING WHICH APPARTUS COMPRISES: A MOTION CONTROL PISTON POSITIONED ADJACENT AND ABOVE SAID DEVICE AND SUPPORTED BY SAID ELONGATED FLEXIBLE SUPPORTING MEMBER, SAID MOTION CONTROL PISTON COMPRISING: AN ELONGATED PIPE AROUND SAID ELONGATED FLEXIBLE SUPPORTING MEMBER; AN ANNULAR BODY AROUND SAID PIPE AND HAVING AN OUTER PERIPHERAL SEALING PORTION FOR SEALINGLY ENGAGING THE WALLS OF SAID TUBING, SAID ANNULAR BODY COMPRISING: A CYLINDRICAL SHELL CONCENTRICALLY SURROUNDING SAID PIPE AND DEFINING WITH SAID PIPE A FLUID PASSAGEWAY; A RESILIENT EXPANDABLE SLEEVE AROUND THE OUTER PERIPHERY OF SAID CYLINDRICAL SHELL INTERMEDIATE ITS LENGTH; AND AXIALLY ADJUSTABLE COMPRESSION MEANS MAINTAINED ON SAID CYLINDRICAL SHELL ADJACENT SAID RESILIENT EXPANDABLE SLEEVE FOR AXIAL MOVEMENT ON SAID CYLINDRICAL SHELL TO COMPRESS SAID RESILIENT EXPANDABLE SLEEVE IN AN AXIAL DIRECTION AND CAUSE SAID RESILIENT EXPANDABLE SLEEVE TO EXPAND RADIALLY INTO SEALING ENGAGEMENT WITH SAID TUBING; AN ANNULAR VALVE SEAT POSITIONED IN SAID FLUID PASSAGEWAY INSIDE SAID CYLINDRICAL SHELL; A SPRING BIASED VALVE MEMBER MOVABLY MOUNTED ON SAID PIPE ADJACENT SAID VALVE SEAT AND RESILIENTLY BIASED INTO SEALING ENGAGEMENT WITH SAID SEAT IN OPPOSITION TO FLUID FLOW IN A DOWNWARD DIRECTION THROUGH SAID FLUID PASSAGEWAY; AND MEANS FOR APPLYING A DOWNWARDLY ACTING FLUID PRESSURE TO SAID MOTION CONTROL PISTON AND SAID DEVICE DOWNWARDLY IN SAID WELL BORE.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |