US3284352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling fluid treatment
Assignee: Mobil Oil AS
•
Filing: 1963-08-19
•
Granted: 1966-11-08
•
Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Burdyn
- 👤 Ludwig D Wiener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:48
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/22; C09K8/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A DRILLING FLUID HAVING A SOLID PHASE AND A LIQUID PHASE, SAID SOLID PHASE COMPRISING A CLAY CAPABLE OF BEING HYDRATED AND DISPERSED BY WATER WITH CONSEQUENT INCREASE IN THE YIELD POINT OF SAID DRILLING FLUID AND SAID LIQUID PHASE HAVING A CONTINUOUS WATER PHASE CAPABLE OF HYDRATING AND DISPERSING SAID CLAY WITH CONSEQUENT INCREASE IN THE YIELD POINT OF SAID DRILLING FLUID AND CONTAINING A SURFACTANT COMPRISING PHENOL ADDUCTEC WITH FROM 10 TO 50 MOLS OF ETHYLENE OXIDE AND OXYETHYLENE ETHER OF NONYL PHENOL HAVING THE FORMULA C9H19-C6H4-(CH2-CH2-O)N-H WHERE N IS A WHOLE NUMBER NOT GREATER THAN 3.
Claim 2
Dependent Claim
99 words
A DRILLING FLUID HAVING A SOLID PHASE AND A LIQUID PHASE, SAID SOLID PHASE COMPRISING A CLAY CAPABLE OF BEING HYDRATED AND DISPERSED BY WATER WITH CONSEQUENT INCREASE IN THE YIELD POINT OF SAID DRILLING FLUID AND SAID LIQUID PHASE HAVING A CONTINUOUS WATER PHASE CAPABLE OF HYDRATING AND DISPERSING SAID CLAY WITH CONSEQUENT INCREASE IN THE YIELD POINT OF SAID DRILLING FLUID AND CONTAINING A SURFACTANT COMPRISING PHENOL ADDUCTEC WITH FROM 10 TO 50 MOLS OF ETHYLENE OXIDE AND OXYETHYLENE ETHER OF NONYL PHENOL HAVING THE FORMULA C9H19-C6H4-(CH2-CH2-O)N-H WHERE N IS A WHOLE NUMBER NOT GREATER THAN 3.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |