US3034984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling fluid
Assignee: Texaco Inc
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Filing: 1958-10-08
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Granted: 1962-05-15
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Expires: 1978-10-08
Abstract
No abstract record available.
Inventors
- 👤 Walter J Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:29
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
88 words
AN AQUEOUS DRILLING FLUID CHARACTERIZED BY AN IMPROVED HIGH TEMPERATURE STABILITY COMPRISING WATER, CLAYEY MATERIAL DISPERSED IN AND A WATER SOLUBLE CALCIUM SALT DISSOLVED IN WATER TO YIELD AN AQUEOUS PHASE HAVING A CALCIUM ION CONCENTRATION IN EXCESS OF 200 P.P.M., AND AS A DISPERSING AGENT FOR SAID CLAYEY MATERIAL A CONDENSATION PRODUCT OF ROSIN AMINE AND ETHYLENE OXIDE, THE MOLAR RATIO OF ETHYLENE OXIDE TO ROSIN AMINE IN SAID CONDENSATION PRODUCT BEING NOT LESS THAN 10, THE PH OF SAID AQUEOUS PHASE BEING NOT GREATER THAN 10.0.
Claim 2
Dependent Claim
88 words
AN AQUEOUS DRILLING FLUID CHARACTERIZED BY AN IMPROVED HIGH TEMPERATURE STABILITY COMPRISING WATER, CLAYEY MATERIAL DISPERSED IN AND A WATER SOLUBLE CALCIUM SALT DISSOLVED IN WATER TO YIELD AN AQUEOUS PHASE HAVING A CALCIUM ION CONCENTRATION IN EXCESS OF 200 P.P.M., AND AS A DISPERSING AGENT FOR SAID CLAYEY MATERIAL A CONDENSATION PRODUCT OF ROSIN AMINE AND ETHYLENE OXIDE, THE MOLAR RATIO OF ETHYLENE OXIDE TO ROSIN AMINE IN SAID CONDENSATION PRODUCT BEING NOT LESS THAN 10, THE PH OF SAID AQUEOUS PHASE BEING NOT GREATER THAN 10.0.
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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |