US3878893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming a consolidated gravel pack in a well borehole
Assignee: Schlumberger Technology Corp
•
Filing: 1973-10-19
•
Granted: 1975-04-22
•
Expires: 1993-10-19
Abstract
Abstract A method for providing a permeably consolidated gravel pack in a well borehole penetrating a subterranean formation is provided. In this method a slurry composition is prepared containing a particulate material coated with an uncured epoxy resin and a curing agent slurried in a hydrocarbon oil. The slurry is injected into the well bore and formation until a screen out occurs. The well is shut in until the resin coated particulate mass cures to form a consolidated permeable sand or gravel pack. A portion or all of the consolidated mass in the well bore is then removed therefrom.
Inventors
- 👤 Claude T Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:47
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/56; C09K8/565
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
177 words
A METHOD OF FORMING A PERMEABLY CONSOLIDATED PARTICULATE MASS IN COMMUNICATION WITH A PERMEABLE SUBTERRANEAN FORMATION WHICH COMPRISES: A. FORMING A PUMPABLE SLURRY BY MIXING TOGETHER A PARTICULATE MATERIAL, AN EPOXY RESIN-SOLVENT MIXTURE, A CURING AGENT, A COUPLING AGENT AND A CARRIER LIQUID TO FORM A SLURRY, SAID PARTICULATE MATERIAL RANGING IN SIZE FROM ABOUT 0.1 TO ABOUT 0.0025 INCH IN DIAMETER AND IS PRESENT IN AN AMOUNT RANGING FROM ABOUT 7 TO ABOUT 20 POUNDS PER GALLON OF LIQUID IN SAID SLURRY, SAID RESIN-SOLVENT FOR COMPRISING AN EPOXY RESIN AND A POLAR ORGANIC SOLVENT FOR SAID RESIN, SAID SOLVENT IN CONJUNCTION WITH SAID RESIN BEING ONLY PARTIALLY MISCIBLE WITH SAID CARRIER LIQUID, SAID RESIN BEING PRESENT IN AN AMOUNT RANGING FROM ABOUT 2 TO ABOUT 10 POUNDS PER 100 POUNDS OF PARTICULATE MATERIAL, SAID RESIN-SOLVENT MIXTURE CONTAINING FROM ABOUT 55 TO ABOUT 85 PERCENT BY WEIGHT OF RESIN, B. INTRODUCING SAID SLURRY INTO A WELL BORE AND IN COMMUNICATION WITH SAID PERMEABLE FORMATION, AND C. CURING SAID SLURRY IN PLACE TO FORM A CONSOLIDATED PERMEABLE MASS.
Claim 2
Independent Claim
177 words
A METHOD OF FORMING A PERMEABLY CONSOLIDATED PARTICULATE MASS IN COMMUNICATION WITH A PERMEABLE SUBTERRANEAN FORMATION WHICH COMPRISES: A. FORMING A PUMPABLE SLURRY BY MIXING TOGETHER A PARTICULATE MATERIAL, AN EPOXY RESIN-SOLVENT MIXTURE, A CURING AGENT, A COUPLING AGENT AND A CARRIER LIQUID TO FORM A SLURRY, SAID PARTICULATE MATERIAL RANGING IN SIZE FROM ABOUT 0.1 TO ABOUT 0.0025 INCH IN DIAMETER AND IS PRESENT IN AN AMOUNT RANGING FROM ABOUT 7 TO ABOUT 20 POUNDS PER GALLON OF LIQUID IN SAID SLURRY, SAID RESIN-SOLVENT FOR COMPRISING AN EPOXY RESIN AND A POLAR ORGANIC SOLVENT FOR SAID RESIN, SAID SOLVENT IN CONJUNCTION WITH SAID RESIN BEING ONLY PARTIALLY MISCIBLE WITH SAID CARRIER LIQUID, SAID RESIN BEING PRESENT IN AN AMOUNT RANGING FROM ABOUT 2 TO ABOUT 10 POUNDS PER 100 POUNDS OF PARTICULATE MATERIAL, SAID RESIN-SOLVENT MIXTURE CONTAINING FROM ABOUT 55 TO ABOUT 85 PERCENT BY WEIGHT OF RESIN, B. INTRODUCING SAID SLURRY INTO A WELL BORE AND IN COMMUNICATION WITH SAID PERMEABLE FORMATION, AND C. CURING SAID SLURRY IN PLACE TO FORM A CONSOLIDATED PERMEABLE MASS.
Claim 3
Independent Claim
177 words
A method of forming a permeably consolidated particulate mass in communication with a permeable subterranean formation which comprises: a. forming a pumpable slurry by mixing together a particulate material, an epoxy resin-solvent mixture, a curing agent, a coupling agent and a carrier liquid to form a slurry, said particulate material ranging in size from about 0.1 to about 0.0025 inch in diameter and is present in an amount ranging from about 7 to about 20 pounds per gallon of liquid in said slurry, said resin-solvent mixture comprising an epoxy resin and a polar organic solvent for said resin, said solvent in conjunction with said resin being only partially miscible with said carrier liquid, said resin being present in an amount ranging from about 2 to about 10 pounds per 100 pounds of particulate material, said resin-solvent mixture containing from about 55 to about 85 percent by weight of resin, b. introducing said slurry into a well bore and in communication with said permeable formation, and c. curing said slurry in place to form a consolidated permeable mass.
Claim 4
Independent Claim
177 words
A method of forming a permeably consolidated particulate mass in communication with a permeable subterranean formation which comprises: a. forming a pumpable slurry by mixing together a particulate material, an epoxy resin-solvent mixture, a curing agent, a coupling agent and a carrier liquid to form a slurry, said particulate material ranging in size from about 0.1 to about 0.0025 inch in diameter and is present in an amount ranging from about 7 to about 20 pounds per gallon of liquid in said slurry, said resin-solvent mixture comprising an epoxy resin and a polar organic solvent for said resin, said solvent in conjunction with said resin being only partially miscible with said carrier liquid, said resin being present in an amount ranging from about 2 to about 10 pounds per 100 pounds of particulate material, said resin-solvent mixture containing from about 55 to about 85 percent by weight of resin, b. introducing said slurry into a well bore and in communication with said permeable formation, and c. curing said slurry in place to form a consolidated permeable mass.
Claim 5
Dependent Claim
66 words
The method of claim 1 wherein said slurry is placed in communication with said formation and also in said borehole, said slurry in communication with said formation and said borehole is cured to form a permeable consolidated mass and a portion of the consolidated mass located in said borehole is removed to provide a consolidated mass extending from said borehole and into contact with said formation.
Claim 6
Dependent Claim
21 words
The method of claim 1 wherein said particulate material is a siliceous material and said coupling agent is an organo-silicon compound.
Claim 7
Dependent Claim
27 words
The method of claim 3 wherein said resin is provided in an amount ranging from about 2.5 to about 9 pounds per 100 pounds of particulate material.
Claim 8
Dependent Claim
21 words
The method of claim 3 wherein said particulate material ranges in size from about 0.065 to about 0.01 inch in diameter.
Claim 9
Dependent Claim
48 words
The method of claim 5 wherein said particulate material is present in an amount ranging from about 9 to about 15 pounds per gallon of liquid and said resin is present in an amount ranging from about 2.5 to about 9 pounds per 100 pounds of particulate material.
Claim 10
Dependent Claim
26 words
The method of claim 1 wherein the carrier liquid is a hydrocarbon oil having a viscosity at 80*F ranging from about 100 to about 2500 centipoise.
Claim 11
Dependent Claim
66 words
The method of claim 7 wherein said particulate material is sand which ranges in size from about 0.065 to about 0.01 in diameter, said sand is present in an amount ranging from about 9 to about 15 pounds per gallon of liquid in said mixture, and said resin is present in an amount ranging from about 2.5 to about 9 pounds per 100 pounds of sand.
Claim 12
Dependent Claim
36 words
The method of claim 8 wherein a sufficient amount of said mixture is pumped into said well to form a mass against said formation and also in the well bore and said entire mass is cured.
Claim 13
Dependent Claim
19 words
The method of claim 9 wherein a portion of said cured mass located in said well bore is removed.
References Cited (Backward Citations)
US2815815A
Cited
US3170516A
Cited
US3335796A
Cited
US3297089A
Cited
US3428122A
Cited
US3548942A
Cited
US3621915A
Cited
US3625287A
Cited
US3646999A
Cited
US3696867A
Cited
US3709298A
Cited
US3750768A
Cited
US3760880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |