Patent US3774683A successfully refreshed from Google Patents.
US3774683A
Expired / Lapsed
US
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Method for stabilizing bore holes
Assignee: Halliburton Co
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Filing: 1972-05-23
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Granted: 1973-11-27
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Expires: 1992-05-23
Abstract
Abstract Unstable earthen formations, particularly subterranean formations, penetrated by holes are stabilized against cave-in, sloughing, and the like, by introducing into the unstable formation a cement composition comprising a hydraulic cement in admixture with certain short length fibers.
Inventors
- 👤 D Smith
- 👤 C Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:28
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/138; E21D; E21D1/00; E21D1/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
15 words
The process of claim 1 wherein said hole is the bore hole of a well.
Claim 2
Dependent Claim
12 words
The process of claim 1 wherein said hole is a mine shaft.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein the diameter of said hole ranges up to about 40 feet.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein said time period is in the range of 18 to 24 hours.
Claim 5
Dependent Claim
21 words
The process of claim 1 wherein said portion of said hole is defined by earthen material subject to sloughing and cave-in.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein said portion of said hole is defined by fluid-containing earthen material.
Claim 7
Dependent Claim
16 words
The process of claim 7 wherein said fluid is comprised of hydrocarbons, water and mixtures thereof.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein said cement composition further contains of a densifier.
Claim 9
Dependent Claim
20 words
A formation stabilization process comprising successive treatments according to the process of claim 1 on successive portions of said hole.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |