Patent US3893510A successfully refreshed from Google Patents.
US3893510A
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Emulsion method of introducing polymers into a subterranean formation
Assignee: Halliburton Co
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Filing: 1974-08-12
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Granted: 1975-07-08
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Expires: 1994-08-12
Abstract
Abstract Suitable water soluble polymers for reducing the permeability of a subterranean formation to the flow of aqueous liquids therethrough are introduced into the subterranean formation as a dispersion of these water soluble polymers in particulated form in a water-in-oil emulsion. The emulsion is diluted with a mixture of aqueous liquid and liquid hydrocarbon before injecting the emulsion into the formation.
Inventors
- 👤 Eugene A Elphingstone
- 👤 Homer C Mclaughlin
- 👤 Charles W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:20
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/502; E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/138
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
A METHOD OF TREATING A SUBTERRANEAN FORMATION TO REDUCE THE PERMEABILITY OF THE FORMATION TO THE FLOW OF AQUEOUS LIQUIDS THERETHROUGH, WHICH COMPRISES THE STEPS OF: INTRODUCING A POLYMER CONTAINING TREATING COMPOSITION INTO THE SUBTERRANEAN FORMATION, AND MAINTAINING THE TREATING COMPOSITION IN THE SUBTERRANEAN FORMATION UNTIL THE POLYMERS CONTAINED IN THE TREATING COMPOSITION HAVE BEEN HYDRATED, SAID POLYMER CONTAINING TREATING COMPOSITION COMPRISING A WATER-IN-OIL EMULSION WHICH COMPRISES ABOUT 10 TO 500 PARTS BY WEIGHT OIL PER 100 PARTS BY WEIGHT WATER, SAID WATER-IN-OIL EMULSION HAVING ABOUT 0.01 TO 35 PARTS BY WEIGHT PARTICULATED WATER SOLUBLE POLYMERS PER 100 PARTS BY WEIGHT EMULSION DISPERSED THEREIN, SAID TREATING COMPOSITION FURTHER COMPRISING A HOMOGENEOUS MIXTURE OF SAID WATER-IN-OIL EMULSION WITH A CARRIER LIQUID WHICH COMPRISES ABOUT 10 TO 70 PARTS BY WEIGHT AQUEOUS LIQUID AND ABOUT 30 TO 90 PARTS BY WEIGHT LIQUID HYDROCARBON PER 100 PARTS BY WEIGHT OF SAID CARRIER LIQUID.
Claim 2
Independent Claim
150 words
A METHOD OF TREATING A SUBTERRANEAN FORMATION TO REDUCE THE PERMEABILITY OF THE FORMATION TO THE FLOW OF AQUEOUS LIQUIDS THERETHROUGH, WHICH COMPRISES THE STEPS OF: INTRODUCING A POLYMER CONTAINING TREATING COMPOSITION INTO THE SUBTERRANEAN FORMATION, AND MAINTAINING THE TREATING COMPOSITION IN THE SUBTERRANEAN FORMATION UNTIL THE POLYMERS CONTAINED IN THE TREATING COMPOSITION HAVE BEEN HYDRATED, SAID POLYMER CONTAINING TREATING COMPOSITION COMPRISING A WATER-IN-OIL EMULSION WHICH COMPRISES ABOUT 10 TO 500 PARTS BY WEIGHT OIL PER 100 PARTS BY WEIGHT WATER, SAID WATER-IN-OIL EMULSION HAVING ABOUT 0.01 TO 35 PARTS BY WEIGHT PARTICULATED WATER SOLUBLE POLYMERS PER 100 PARTS BY WEIGHT EMULSION DISPERSED THEREIN, SAID TREATING COMPOSITION FURTHER COMPRISING A HOMOGENEOUS MIXTURE OF SAID WATER-IN-OIL EMULSION WITH A CARRIER LIQUID WHICH COMPRISES ABOUT 10 TO 70 PARTS BY WEIGHT AQUEOUS LIQUID AND ABOUT 30 TO 90 PARTS BY WEIGHT LIQUID HYDROCARBON PER 100 PARTS BY WEIGHT OF SAID CARRIER LIQUID.
Claim 3
Dependent Claim
46 words
The method of treating a subterranean formation as described in claim 1 wherein said carrier liquid comprises about 15 to 50 parts by weight aqueous liquid and about 50 to 85 parts by weight liquid hydrocarbon per 100 parts by weight of said carrier liquid. Pg,20
Claim 4
Dependent Claim
39 words
The method of treating a subterranean formation as described in claim 2 wherein said treating composition comprises sufficient carrier liquid to reduce the apparent viscosity of said treating composition to within the range of about 5 to 50 cps.
Claim 5
Dependent Claim
39 words
The method of treating a subterranean formation as described in claim 1 wherein said treating composition comprises sufficient carrier liquid to reduce the apparent viscosity of the treating composition to within the range of about 5 to 15 cps.
Claim 6
Dependent Claim
45 words
The method of treating a subterranean formation as described in claim 4 wherein said carrier liquid comprises about 25 to 40 parts by weight aqueous liquid and about 60 to 75 parts by weight liquid hydrocarbon per 100 parts by weight of said carrier liquid.
Claim 7
Dependent Claim
27 words
The method of treating a subterranean formation as described in claim 5 wherein said particulated water soluble polymers have particle sizes of less than about 5 microns.
Claim 8
Dependent Claim
36 words
The method of treating a subterranean formation as described in claim 5 wherein said particulated water soluble polymers are water soluble, synthetic polymers having particle sizes within the range of about 5 millimicrons to 5 microns.
Claim 9
Dependent Claim
30 words
The method of treating a subterranean formation as described in claim 7 wherein said liquid hydrocarbon is selected from the group consisting of kerosene, diesel oil, naptha, or mixtures thereof.
Claim 10
Dependent Claim
49 words
The method of treating a subterranean formation as described in claim 1 wherein said treating composition is prepared by first homogeneously mixing said emulsion having said particulated polymers dispersed therein with said liquid hydrocarbon, and thereafter homogeneously mixing said mixture of emulsion and liquid hydrocarbon with said aqueous liquid.
Claim 11
Dependent Claim
111 words
The method of treating a subterranean formation as described in claim 9 wherein said treating composition comprises sufficient carrier liquid to reduce the apparent viscosity of the treating composition to within the range of about 5 to 15 cps; wherein said carrier liquid comprises about 25 to 40 parts by weight aqueous liquid and about 60 to 75 parts by weight liquid hydrocarbon per 100 parts by weight of said carrier liquid; wherein said particulated water soluble polymers have particle sizes within the range of about 5 millimicrons to 5 microns; and, further, wherein said liquid hydrocarbon is selected from the group consisting of kerosene, diesel oil, naptha, or mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |