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US3687203A
Expired / Lapsed
US
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Method of increasing well productivity
Assignee: Halliburton Co
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Filing: 1970-07-23
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Granted: 1972-08-29
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Expires: 1990-07-23
Abstract
Abstract A substantially vertical fracture in a well formation is partially filled to prevent healing of the fracture, and the unfilled portion of the fracture is utilized for production flow.
Inventors
- 👤 William T Malone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:26
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/267
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A process for producing an open channel in a first subterranean zone comprising: contacting a second subterranean zone with a fracturing fluid, said second zone being adjacent to and below said first zone, applying sufficient pressure to said fluid to initiate a fracture in said second zone, introducing a sufficient quantity of said fluid into said fracture to extend said fracture into said first zone, and, maintaining a pressure on said fluid sufficient to hold said fracture open while placing a sufficient quantity of propping agent into said fracture to substantially fill said fracture up to about the base of said first zone.
Claim 2
Dependent Claim
103 words
A process for producing an open channel in a first subterranean zone comprising: contacting a second subterranean zone with a fracturing fluid, said second zone being adjacent to and below said first zone, applying sufficient pressure to said fluid to initiate a fracture in said second zone, introducing a sufficient quantity of said fluid into said fracture to extend said fracture into said first zone, and, maintaining a pressure on said fluid sufficient to hold said fracture open while placing a sufficient quantity of propping agent into said fracture to substantially fill said fracture up to about the base of said first zone.
Claim 3
Dependent Claim
18 words
The process of claim 1, wherein said first zone and second zone are penetrated by a bore hole.
Claim 4
Dependent Claim
28 words
The process of claim 2, wherein said bore hole is fitted with suitable casing and annular sealant to isolate said first and second zones within said bore hole.
Claim 5
Dependent Claim
17 words
The process of claim 3, wherein said fluid contacts said second zone through a set of perforations.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |