US3110668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion drilling fluid
Assignee: Pan American Petroleum Corp
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Filing: 1960-12-28
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Granted: 1963-11-12
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Expires: 1980-12-28
Abstract
No abstract record available.
Inventors
- 👤 Duane B Anderson
- 👤 James L Lummus
- 👤 Park Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:13
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A CLEAR WATER; DRILLING FLUID WHEREIN THE ACTIVE INGREDIENTS OF SAID FLUID CONSIST ESSENTIALLY OF; FROM 1 TO ABOUT 15 POUNDS PER BARREL OF AN AQUEOUS RESIN EMULSION STABILIZED AGAINST SHEARING FORCES OF THE ORDER OF ABOUT 18000 R.P.M. AND CONTAMINATION WITH CLAY SOLIDS BY THE COMBINED USE OF FROM ABOUT 0.1 TO ABOUT 1.25 POUNDS PER BARREL OF GUAR AND FROM ABOUT 5 TO ABOUT 40 PERCENT OF A SURFACE-ACTIVE AGENT, BASED ON THE WEIGHT OF SAID EMULSION, SAID AGENT BEING SELECTED FROM THE GROUP CONSISTING OF NONIONIC AND CATIONIC SURFACE-ACTIVE AGENTS OTHER THAN THOSE THAT ARE PRIMARILY FOAMERS.
Claim 2
Dependent Claim
100 words
A CLEAR WATER; DRILLING FLUID WHEREIN THE ACTIVE INGREDIENTS OF SAID FLUID CONSIST ESSENTIALLY OF; FROM 1 TO ABOUT 15 POUNDS PER BARREL OF AN AQUEOUS RESIN EMULSION STABILIZED AGAINST SHEARING FORCES OF THE ORDER OF ABOUT 18000 R.P.M. AND CONTAMINATION WITH CLAY SOLIDS BY THE COMBINED USE OF FROM ABOUT 0.1 TO ABOUT 1.25 POUNDS PER BARREL OF GUAR AND FROM ABOUT 5 TO ABOUT 40 PERCENT OF A SURFACE-ACTIVE AGENT, BASED ON THE WEIGHT OF SAID EMULSION, SAID AGENT BEING SELECTED FROM THE GROUP CONSISTING OF NONIONIC AND CATIONIC SURFACE-ACTIVE AGENTS OTHER THAN THOSE THAT ARE PRIMARILY FOAMERS.
References Cited (Backward Citations)
CA579582A
Cited
US2494002A
Cited
US2473929A
Cited
US2747839A
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US2751368A
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US2805990A
Cited
US2947715A
Cited
US2908597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |