Patent US4433612A successfully refreshed from Google Patents.
Patent US3307626A successfully refreshed from Google Patents.
US3307626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Completion of wells
Assignee: ExxonMobil Upstream Research Co
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Filing: 1964-06-15
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Granted: 1967-03-07
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Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Walter J Bielstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:51
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/119
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A WELL INSTALLATION WHEREIN A PLURALITY OF PIPE STRINGS COEXTEND SIDE BY SIDE FROM THE EARTH''S SURFACE THROUGH A BOREHOLE AND ARE BONDED TO THE SIDES OF THE BOREHOLE BY A CEMENTITIOUS SHEATH, THE METHOD OF OPENING FLUID COMMUNICATION BETWEEN PRODUCTIVE EARTH FORMATIONS PENETRATED BY AT LEAST TWO PIPE STRINGS, COMPRISING: DETECTING THE LOW SIDE OF THE BOREHOLE; PERFORATING A SELECTED ONE OF THE FIRST AND SECOND PIPE STRINGS RUN INTO THE WELL ON THE LOW SIDE THEREOF WITH RESPECT TO THE INCLINATION OF THE BOREHOLE AT THE LEVEL OF A FIRST EARTH FORMATION; AND AT THE LEVEL OF ANOTHER PRODUCTIVE EARTH FORMATION PENETRATED BY AT LEAST THREE PIPE STRINGS, PERFORATING
Claim 2
Dependent Claim
112 words
IN A WELL INSTALLATION WHEREIN A PLURALITY OF PIPE STRINGS COEXTEND SIDE BY SIDE FROM THE EARTH''S SURFACE THROUGH A BOREHOLE AND ARE BONDED TO THE SIDES OF THE BOREHOLE BY A CEMENTITIOUS SHEATH, THE METHOD OF OPENING FLUID COMMUNICATION BETWEEN PRODUCTIVE EARTH FORMATIONS PENETRATED BY AT LEAST TWO PIPE STRINGS, COMPRISING: DETECTING THE LOW SIDE OF THE BOREHOLE; PERFORATING A SELECTED ONE OF THE FIRST AND SECOND PIPE STRINGS RUN INTO THE WELL ON THE LOW SIDE THEREOF WITH RESPECT TO THE INCLINATION OF THE BOREHOLE AT THE LEVEL OF A FIRST EARTH FORMATION; AND AT THE LEVEL OF ANOTHER PRODUCTIVE EARTH FORMATION PENETRATED BY AT LEAST THREE PIPE STRINGS, PERFORATING
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |