US4113015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating wells with viscous epoxy-resin-forming solutions
Assignee: Shell USA Inc
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Filing: 1977-11-16
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Granted: 1978-09-12
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Expires: 1997-11-16
Abstract
Abstract A well treating process in which a granular mass is consolidated by contacting it with an epoxy resin-forming solution that precipitates a self-curing partially-cured resin, is improved by using such a solution that contains a viscosity-increasing amount of an otherwise substantially inert oil-soluble polymer.
Inventors
- 👤 Franciscus H. Meijs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:06
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/56; C09K8/565; C09K8/50; C09K8/504; C09K8/506; C09K8/508; C09K8/5086
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
81 words
In a process for treating a well by injecting, into the well and into any fluid-containing permeable earth formation in fluid-communicaton with the well, an epoxy-resin-forming solution from which a self-curing partially-cured resin is subsequently precipitated, the improvement comprising: dissolving in the resin-forming solution to be injected a viscosity-increasing oil-soluble polymer that provides a solution effective viscosity at least substantially equaling that of the fluid within the well and any fluid-containing permeable earth formation which is in fluid-communication with the well.
Claim 2
Dependent Claim
81 words
In a process for treating a well by injecting, into the well and into any fluid-containing permeable earth formation in fluid-communicaton with the well, an epoxy-resin-forming solution from which a self-curing partially-cured resin is subsequently precipitated, the improvement comprising: dissolving in the resin-forming solution to be injected a viscosity-increasing oil-soluble polymer that provides a solution effective viscosity at least substantially equaling that of the fluid within the well and any fluid-containing permeable earth formation which is in fluid-communication with the well.
Claim 3
Dependent Claim
72 words
The process of claim 1 in which: the resin-forming solution is injected into an oil-containing reservoir; and said injection is preceded by injecting a succession of slugs of, respectively, an oil-miscible fluid for displacing oil, and oil-and-water miscible fluid for displacing the injected oil-miscible fluid, and an oil-miscible fluid for displacing the injected oil-and-water miscible fluid, each having an effective viscosity at least substantially equaling that of the fluid it is displacing.
Claim 4
Dependent Claim
28 words
The process of claim 1 in which the injected resin-forming solution has an effective viscosity of at least about 50 centipoises and contains a susupension of solid particles.
Claim 5
Dependent Claim
63 words
The process of claim 3 in which: the resin-forming solution containing the suspended particles is injected ahead of a portion of the resin-forming solution which is free of suspended particles and has an effective viscosity which is at least substantially equal to that of the suspended-particle-containing fluid; and the fluid injection is continued to, but not substantially beyond, the occurrence of a sand-out.
Claim 6
Dependent Claim
65 words
The process of claim 1 in which the resin-forming solution contains from about 5 to 30% by volume of resin-forming components dissolved in a liquid mixture of aliphatic and aromatic hydrocarbons and sufficient viscosity-increasing polymer to provide an effective viscosity of from about 1 to 150 centipoises as measured at the reservoir temperature at a shear rate of 51 reciprocal seconds in a Fann viscosimeter.
Claim 7
Dependent Claim
24 words
The process of claim 5 in which the viscosity-increasing polymer is an isoprene-styrene copolymer having a molecular weight of from about 50,000 to 1,000,000.
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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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |