US3301323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of drilling fluid properties
Assignee: Phillips Petroleum Co
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Filing: 1963-12-19
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Granted: 1967-01-31
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Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 Edwin D Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:56
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/032; C09K8/54; E; E21; E21B; E21B21/00; E21B21/06; E21B21/068; E21B41/00; E21B41/02; E21B49/00; E21B49/005; C09K2208/00; C09K2208/20; Y; Y10; Y10S; Y10S166/00; Y10S166/902
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
A METHOD FOR CONTROLLING THE CONTENT OF A CONTAMINANT SELECTED FROM THE GROUP CONSISTING OF OXYGEN, CARBON DIOXIDE, AND HYDROGEN SULFIDE IN A DRILLING FLUID WHILE SAID FLUID IS BEING CONTINUOUSLY CIRCULATED INTO AND OUT OF A WELL, WHICH METHOD COMPRISES, IN COMBINATION, THE STEPS OF: CONTINUOUSLY MEASURING THE CONTENT OF SAID CONTAMINANT IN SAID DRILLING FLUID; AND ADDING TO SAID DRILLING FLUID DURING SAID CIRCULATION, IN ACCORDANCE WITH SAID MEASUREMENT, AN AMOUNT OF A SCAVENGER MATERIAL SUFFICIENT TO REDUCE AND MAINTAIN SAID CONTAMINANT CONTENT TO A LEVEL OF LESS THAN 1 PART BY WEIGHT PER MILLION PARTS BY WEIGHT OF SAID DRILLING FLUID.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |