US2798557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fracturing oil bearing formations
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1952-05-16
•
Granted: 1957-07-09
•
Expires: 1972-05-16
Abstract
No abstract record available.
Inventors
- 👤 Ben W Sewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:58
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127; E21B43/00; E21B43/25; E21B43/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF FRACTURING A SUBTERRANEAN OIL-BEARING FORMATION FROM A WELL BORE PENETRATING THE FORMATION SO AS TO IMPROVE ITS OIL PRODUCTIVITY, WHICH COMPRISES PLACING AN EXPANSIBLE HOLLOW ELASTIC TUBE IN THE WELL BORE ADJACENT THE FORMATION IN A MATTER DEFINING AN ANNULUS BETWEEN THE TUBE AND THE FORMATION, FILLING SAID ANNULUS WITH GRANULAR PACKING MATERIAL, EXERTING SUFFICIENT FLUID PRESSURE WITHIN SAID TUBE TO FORCE SAID PACKING MATERIAL AGAINST SAID FORMATION AND TO FRACTURE THE FORMATION IN THE VICINITY OF THE WELL BORE, CONTINUING THE EXERTION OF FLUID PRESSURE WITHIN THE ELASTIC TUBE TO FORCE AT LEAST A PORTION OF THE PACKING MATERIAL INTO THE RESULTING FRAC-
Claim 2
Independent Claim
107 words
A METHOD OF FRACTURING A SUBTERRANEAN OIL-BEARING FORMATION FROM A WELL BORE PENETRATING THE FORMATION SO AS TO IMPROVE ITS OIL PRODUCTIVITY, WHICH COMPRISES PLACING AN EXPANSIBLE HOLLOW ELASTIC TUBE IN THE WELL BORE ADJACENT THE FORMATION IN A MATTER DEFINING AN ANNULUS BETWEEN THE TUBE AND THE FORMATION, FILLING SAID ANNULUS WITH GRANULAR PACKING MATERIAL, EXERTING SUFFICIENT FLUID PRESSURE WITHIN SAID TUBE TO FORCE SAID PACKING MATERIAL AGAINST SAID FORMATION AND TO FRACTURE THE FORMATION IN THE VICINITY OF THE WELL BORE, CONTINUING THE EXERTION OF FLUID PRESSURE WITHIN THE ELASTIC TUBE TO FORCE AT LEAST A PORTION OF THE PACKING MATERIAL INTO THE RESULTING FRAC-
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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) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |