US4527627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of acidizing propped fractures
Assignee: National City Bank
•
Filing: 1983-07-28
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Granted: 1985-07-09
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Expires: 2003-07-28
Abstract
Abstract A method of treating a subterranean formation comprising hydraulically fracturing the formation and filling the fractures with a self-consolidating proppant. The proppant is consolidated and the formation then acidized to produce channels of increased conductivity adjacent the consolidated proppant.
Inventors
- 👤 John W. Graham
- 👤 A. Richard Sinclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:30
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/267; C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; C09K8/80; E21B43/261
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
53 words
A method for treating a subterranean formation comprising: hydraulically fracturing said formation to create fractures therein; filling said fractures with self-consolidating resin coated particles; curing said resin coated particles to form a cohesive permeable matrix within said fractures; and acidizing said formation so as to produce channels of increased conductivity adjacent said matrix.
Claim 2
Independent Claim
53 words
A method for treating a subterranean formation comprising: hydraulically fracturing said formation to create fractures therein; filling said fractures with self-consolidating resin coated particles; curing said resin coated particles to form a cohesive permeable matrix within said fractures; and acidizing said formation so as to produce channels of increased conductivity adjacent said matrix.
Claim 3
Dependent Claim
39 words
The method of claim 1, wherein said resin coated particles comprise: high strength centers; a coupling agent chemically bound to said centers; a novalac resin coated over said centers and bound to said coupling agent; and a cross-linking agent.
Claim 4
Dependent Claim
12 words
The method of claim 2, wherein said formation is a carbonate formation.
Claim 5
Independent Claim
85 words
A method for treating a subterranean carbonate formation comprising: hydraulically fracturing said formation to create fractures therein; filling said fractures with self-consolidating resin coated particles comprised of high strength centers, a coupling agent chemically bound to said centers, a novalac resin coated over said centers and chemically bound to the coupling agent, and a cross-linking agent; curing said resin coated particles to form a cohesive permeable matrix within said fracture; and acidizing said formation so as to produce channels of increased conductivity adjacent said matrix.
Claim 6
Independent Claim
85 words
A method for treating a subterranean carbonate formation comprising: hydraulically fracturing said formation to create fractures therein; filling said fractures with self-consolidating resin coated particles comprised of high strength centers, a coupling agent chemically bound to said centers, a novalac resin coated over said centers and chemically bound to the coupling agent, and a cross-linking agent; curing said resin coated particles to form a cohesive permeable matrix within said fracture; and acidizing said formation so as to produce channels of increased conductivity adjacent said matrix.
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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) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |