US3101118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Y-branched wellhead assembly
Assignee: Shell USA Inc
•
Filing: 1959-08-17
•
Granted: 1963-08-20
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Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Culver
- 👤 John A Haeber
- 👤 Edward B Lagucki
- 👤 Raymond F Perner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:45
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A WELLHEAD SYSTEM ADAPTED TO BE ARRANGED AT THE TOP OF A WELL CASING EXTENDING INTO THE GROUND AND TRANVERSING AT LEAST ONE PRODUCING FORMATION, SAID ASSEMBLY INCLUDING FIRST CONDUIT MEANS ADAPTED TO EXTEND VERTICALLY FROM SAID WELL CASING AND CURVED CONDUIT MEANS BRANCHING FROM SAID VERTICALLY-EXTENDING CONDUIT MEANS, SECOND CONDUIT MEANS IN SAID WELLHEAD SYSTEM IN COMMUNICATION BETWEEN THE INTERIOR OF THE WELL AND THE SPACE OUTSIDE THEREOF, SAID FIRST AND SECOND CONDUIT MEANS BEING ADAPTED TO BE IN COMMUNICATION WITH EACH OTHER WITHIN THE WELL WHEREBY A CIRCULATION PATH THROUGH THE WELLHEAD SYSTEM AND TO AND FROM SAID WELL MAY BE ESTABLISHED, AND MEANS FOR CLOSING OFF THE VERTICALLY-EXTENDING CONDUIT MEANS TO MAINTAIN A FULL-OPENING PATH THROUGH SAID CURVED CONDUIT MEANS.
Claim 2
Dependent Claim
123 words
A WELLHEAD SYSTEM ADAPTED TO BE ARRANGED AT THE TOP OF A WELL CASING EXTENDING INTO THE GROUND AND TRANVERSING AT LEAST ONE PRODUCING FORMATION, SAID ASSEMBLY INCLUDING FIRST CONDUIT MEANS ADAPTED TO EXTEND VERTICALLY FROM SAID WELL CASING AND CURVED CONDUIT MEANS BRANCHING FROM SAID VERTICALLY-EXTENDING CONDUIT MEANS, SECOND CONDUIT MEANS IN SAID WELLHEAD SYSTEM IN COMMUNICATION BETWEEN THE INTERIOR OF THE WELL AND THE SPACE OUTSIDE THEREOF, SAID FIRST AND SECOND CONDUIT MEANS BEING ADAPTED TO BE IN COMMUNICATION WITH EACH OTHER WITHIN THE WELL WHEREBY A CIRCULATION PATH THROUGH THE WELLHEAD SYSTEM AND TO AND FROM SAID WELL MAY BE ESTABLISHED, AND MEANS FOR CLOSING OFF THE VERTICALLY-EXTENDING CONDUIT MEANS TO MAINTAIN A FULL-OPENING PATH THROUGH SAID CURVED CONDUIT MEANS.
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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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |