Patent US3370887A successfully refreshed from Google Patents.
US3370887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hole preparation for fracturing solution mining wells
Assignee: ConocoPhillips Co
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Filing: 1966-04-05
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Granted: 1968-02-27
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Expires: 1986-04-05
Abstract
No abstract record available.
Inventors
- 👤 Carroll F Knutson
- 👤 Bruce G Bray
- 👤 Jr Harry A Wahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:07
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28; E21B43/283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN FRACTURING A SALT BED WITH HYDRAULIC PRESSURE COMPRISING A MIXTURE OF SALTS WHEREIN AT LEAST ONE OF THE SALTS IS TO BE RECOVERED AND AT LEAST ONE SALT IS NOT DESIRED, THE IMPROVEMENT COMPRISING CONTACTING SAID SALT BED WITH A LIQUID SOLVENT FOR THE DESIRED SALTS AND NONSOLVENT FOR THE UNDESIRED SALTS TO FORM AN INITIAL CAVITY IN THE SALT BED AND THEREAFTER APPLYING SUFFICIENT PRESSURE TO SAID CAVITY TO FRACTURE SAID SALT BED.
Claim 2
Dependent Claim
75 words
IN FRACTURING A SALT BED WITH HYDRAULIC PRESSURE COMPRISING A MIXTURE OF SALTS WHEREIN AT LEAST ONE OF THE SALTS IS TO BE RECOVERED AND AT LEAST ONE SALT IS NOT DESIRED, THE IMPROVEMENT COMPRISING CONTACTING SAID SALT BED WITH A LIQUID SOLVENT FOR THE DESIRED SALTS AND NONSOLVENT FOR THE UNDESIRED SALTS TO FORM AN INITIAL CAVITY IN THE SALT BED AND THEREAFTER APPLYING SUFFICIENT PRESSURE TO SAID CAVITY TO FRACTURE SAID SALT BED.
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |