US3129761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of establishing communication between wells
Assignee: Dow Chemical Co
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Filing: 1963-01-23
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Granted: 1964-04-21
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Expires: 1983-01-23
Abstract
No abstract record available.
Inventors
- 👤 Harold E Staadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:58
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/18; E21B43/00; E21B43/16; E21B43/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 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 TOWARDS SAID SECOND WELL WITH WHICH COMMUNICATION IS TO BE ESTABLISHED, NOTCHING SAID FORMATION OF SAID SECOND WELL IN A HORIZONTALLY DISPOSED PLANE WHICH, IF EXTENDED, WOULD INTERSECT, 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
103 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 TOWARDS SAID SECOND WELL WITH WHICH COMMUNICATION IS TO BE ESTABLISHED, NOTCHING SAID FORMATION OF SAID SECOND WELL IN A HORIZONTALLY DISPOSED PLANE WHICH, IF EXTENDED, WOULD INTERSECT, 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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |