US3270816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of establishing communication between wells
Assignee: Dow Chemical Co
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Filing: 1963-12-19
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Granted: 1966-09-06
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Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 Harold E Staadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:19
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A METHOD OF ESTABLISHING SUBSURFACE COMMUNICATION BETWEEN FIRST AND SECOND EARTH WELLS WHICH ARE SPACED APART BY A PREDETERMINED DISTANCE, EACH OF WHICH PENETRATES A PARTICULAR EARTH FORMATION, COMPRISING NOTCHING SAID FORMATION OF SAID FIRST WELL ALONG A PREDETERMINED DEPTH RANGE AND IN A VERTICALLY DISPOSED PLANE WHICH EXTENDS GENERALLY AT AN ACUTE ANGLE WITH RESPECT TO A LINE DRAWN BETWEEN SAID FIRST AND SECOND WELL AND TOWARDS SAID SECOND WELL WITH WHICH COMMUNICATION IS TO BE ESTABLISHED, NOTCHING SAID FORMATION OF SAID SECOND WELL IN A VERTICALLY DISPOSED PLANE AT AN ACUTE ANGLE WITH RESPECT TO SAID LINE DRAWN BETWEEN SAID WELLS AND WHICH, IF EXTENDED, WOULD INTERSECT AN EXTENSION OF THE VERTICALLY DISPOSED NOTCH OF SAID FIRST WELL, AND HYDRAULICALLY FRACTURING SAID PARTICULAR EARTH FORMATION FROM BOTH WELLS THROUGH SAID NOTCHES UNTIL SAID FRACTURES MEET.
Claim 2
Independent Claim
137 words
A METHOD OF ESTABLISHING SUBSURFACE COMMUNICATION BETWEEN FIRST AND SECOND EARTH WELLS WHICH ARE SPACED APART BY A PREDETERMINED DISTANCE, EACH OF WHICH PENETRATES A PARTICULAR EARTH FORMATION, COMPRISING NOTCHING SAID FORMATION OF SAID FIRST WELL ALONG A PREDETERMINED DEPTH RANGE AND IN A VERTICALLY DISPOSED PLANE WHICH EXTENDS GENERALLY AT AN ACUTE ANGLE WITH RESPECT TO A LINE DRAWN BETWEEN SAID FIRST AND SECOND WELL AND TOWARDS SAID SECOND WELL WITH WHICH COMMUNICATION IS TO BE ESTABLISHED, NOTCHING SAID FORMATION OF SAID SECOND WELL IN A VERTICALLY DISPOSED PLANE AT AN ACUTE ANGLE WITH RESPECT TO SAID LINE DRAWN BETWEEN SAID WELLS AND WHICH, IF EXTENDED, WOULD INTERSECT AN EXTENSION OF THE VERTICALLY DISPOSED NOTCH OF SAID FIRST WELL, AND HYDRAULICALLY FRACTURING SAID PARTICULAR EARTH FORMATION FROM BOTH WELLS THROUGH SAID NOTCHES UNTIL SAID FRACTURES MEET.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |