US3142337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic system for underwater wellheads
Assignee: Shell USA Inc
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Filing: 1960-10-24
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Granted: 1964-07-28
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Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank Poorman
- 👤 Carl W Lafitte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:25
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/0355; E21B33/0387; Y; Y10; Y10S; Y10S285/00; Y10S285/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF ESTABLISHING FROM A REMOTE LOCATION CONTROL OF HYDRAULIC UNITS OF A WELLHEAD POSITIONED UNDER WATER WITH HYDRAULIC PRESSURE FLUID CONDUITS EXTENDIBLE FROM A REMOTE LOCATION TO AT LEAST SOME OF THE HYDRAULIC UNITS OF SAID WELLHEAD, SAID WELLHEAD BEING PROVIDED WITH A MANIFOLD VALVE FIXEDLY POSITIONED TO THE WELLHEAD IN HYDRAULIC CONDUIT MEANS THEREOF EXTENDING TO HYDRAULIC UNITS OF SAID WELLHEAD AND CAPABLE OF CLOSING OFF THE HYDRAULIC CONDUITS, SAID METHOD COMPRISING LOWERING AUXILIARY CONDUIT MEANS FROM THE SURFACE OF THE WATER INTO ALIGNMENT WITH SAID MANIFOLD VALVE, CONNECTING SAID VALVE TO THE LOWER END OF SAID AUXILIARY CONDUIT MEANS BY REMOTE OPERATION AND CONTROL TO PLACE AT LEAST ONE HYDRAULIC UNIT OF A WELLHEAD IN COMMUNICATION WITH SAID AUXILIARY CONDUIT MEANS, MANIPULATING THE VALVE BY MEANS OF THE AUXILIARY CONDUIT MEANS TO OPEN THE VALVE, AND SUPPLYING THROUGH SAID AUXILIARY CONDUIT MEANS A FLUID UNDER PRESSURE TO ACTUATE AT LEAST ONE HYDRAULIC UNIT OF THE WELLHEAD.
Claim 2
Independent Claim
160 words
A METHOD OF ESTABLISHING FROM A REMOTE LOCATION CONTROL OF HYDRAULIC UNITS OF A WELLHEAD POSITIONED UNDER WATER WITH HYDRAULIC PRESSURE FLUID CONDUITS EXTENDIBLE FROM A REMOTE LOCATION TO AT LEAST SOME OF THE HYDRAULIC UNITS OF SAID WELLHEAD, SAID WELLHEAD BEING PROVIDED WITH A MANIFOLD VALVE FIXEDLY POSITIONED TO THE WELLHEAD IN HYDRAULIC CONDUIT MEANS THEREOF EXTENDING TO HYDRAULIC UNITS OF SAID WELLHEAD AND CAPABLE OF CLOSING OFF THE HYDRAULIC CONDUITS, SAID METHOD COMPRISING LOWERING AUXILIARY CONDUIT MEANS FROM THE SURFACE OF THE WATER INTO ALIGNMENT WITH SAID MANIFOLD VALVE, CONNECTING SAID VALVE TO THE LOWER END OF SAID AUXILIARY CONDUIT MEANS BY REMOTE OPERATION AND CONTROL TO PLACE AT LEAST ONE HYDRAULIC UNIT OF A WELLHEAD IN COMMUNICATION WITH SAID AUXILIARY CONDUIT MEANS, MANIPULATING THE VALVE BY MEANS OF THE AUXILIARY CONDUIT MEANS TO OPEN THE VALVE, AND SUPPLYING THROUGH SAID AUXILIARY CONDUIT MEANS A FLUID UNDER PRESSURE TO ACTUATE AT LEAST ONE HYDRAULIC UNIT OF THE WELLHEAD.
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |