US3915727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for selectively modifying the permeability of subterranean formation
Assignee: ConocoPhillips Co
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Filing: 1974-09-03
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Granted: 1975-10-28
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Expires: 1994-09-03
Abstract
Abstract A method for selectively modifying the permeability of subterranean formations by injecting a composition selected from the group consisting of metal alkoxides, metal dispersions, and mixtures thereof into a borehole penetrating said formations.
Inventors
- 👤 Derry D Sparlin
- 👤 Mack W Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:19
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/502; Y; Y10; Y10S; Y10S106/00; Y10S106/90; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
205 words
A METHOD FOR SELECTIVELY MODIFYING THE PREMEABILITY OF SUBTERRANEAN FORMATIONS, SAID METHOD COMPRISING INJECTING A COMPOSITION CONSISTING ESSENTIALLY OF: A. METAL ALKOXIDES HAVING THE GENERAL FORMULA: M(-O-CO-O-R)P(-O-R)(N-P) WHERE M IS A METAL SELECTED FROM THE GROUP CONSSTING OF MAGNESIUM, CALCIUM, LANTHIUM, TITANIUM, VANADIUM, CHRONIUM, MANGANESE, IRON, COPPER, CADMIUM, ALUMINUM, TIN, BISMUTH, BARIUM, STRONTIUM, ZINC, LEAD, NICKEL, AND COBALT, N IS EQUAL TO THE VALENCE OF M, P VARIES FROM O TO N, R IS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS CONTAINING FROM 1 TO 20 CARBON ATOMS, ETHER ALCOHOLS CONTAINING FROM 1 TO 15 CARBON ATOMS, AND ALCOHOLS CONTAINING FROM 1 TO 20 CARBON ATOMS, SAID METAL ALKOXIDE CONSTITUTING FROM 1 TO 75 WEIGHT PERCENT OF SAID COMPOSITION, AND B. METAL DISPERSION WHEREIN METALLIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF WATER-INSOLUBLE OXIDES, HYDROXIDES, AND CORBONATES OF METALS SELECTED FROM THE GROUP CUNSISTIN OF MAGNESIUM, CALCIUM, LANTHANUM, TITANIUM, VANADIUM, CHROMIUM, MANGANESE, IRON, COPPER, CADMIUM, ALUMIUM, TIN, BISMUTH, BARIUM, STRONTIUM, ZINC, LEAD, NICKEL AND COBAT ARE DISPERSED BY AN OIL-SOLUBLE DISPERSING AGET SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS, TALL OIL ACIDS, SULFONATES, AND PHENATES IN A NONVOLATILE CARRIER, SAID METAL DISPERSION CONSTITUTING FROM ABOUT 99 TO ABOUT 25 WEIGHT PERCENT OF SAID COMPOSITION.
Claim 2
Independent Claim
205 words
A METHOD FOR SELECTIVELY MODIFYING THE PREMEABILITY OF SUBTERRANEAN FORMATIONS, SAID METHOD COMPRISING INJECTING A COMPOSITION CONSISTING ESSENTIALLY OF: A. METAL ALKOXIDES HAVING THE GENERAL FORMULA: M(-O-CO-O-R)P(-O-R)(N-P) WHERE M IS A METAL SELECTED FROM THE GROUP CONSSTING OF MAGNESIUM, CALCIUM, LANTHIUM, TITANIUM, VANADIUM, CHRONIUM, MANGANESE, IRON, COPPER, CADMIUM, ALUMINUM, TIN, BISMUTH, BARIUM, STRONTIUM, ZINC, LEAD, NICKEL, AND COBALT, N IS EQUAL TO THE VALENCE OF M, P VARIES FROM O TO N, R IS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS CONTAINING FROM 1 TO 20 CARBON ATOMS, ETHER ALCOHOLS CONTAINING FROM 1 TO 15 CARBON ATOMS, AND ALCOHOLS CONTAINING FROM 1 TO 20 CARBON ATOMS, SAID METAL ALKOXIDE CONSTITUTING FROM 1 TO 75 WEIGHT PERCENT OF SAID COMPOSITION, AND B. METAL DISPERSION WHEREIN METALLIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF WATER-INSOLUBLE OXIDES, HYDROXIDES, AND CORBONATES OF METALS SELECTED FROM THE GROUP CUNSISTIN OF MAGNESIUM, CALCIUM, LANTHANUM, TITANIUM, VANADIUM, CHROMIUM, MANGANESE, IRON, COPPER, CADMIUM, ALUMIUM, TIN, BISMUTH, BARIUM, STRONTIUM, ZINC, LEAD, NICKEL AND COBAT ARE DISPERSED BY AN OIL-SOLUBLE DISPERSING AGET SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS, TALL OIL ACIDS, SULFONATES, AND PHENATES IN A NONVOLATILE CARRIER, SAID METAL DISPERSION CONSTITUTING FROM ABOUT 99 TO ABOUT 25 WEIGHT PERCENT OF SAID COMPOSITION.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein said nonvolatile carrier is selected from the group consisting of mineral lubricating oils, vegetable oils, animal oils, and synthetic oils.
Claim 4
Dependent Claim
64 words
The method of claim 1 wherein said sulfonates are selected from the group consisting of alkyl sulfonates, alkaryl sulfonates, and aryl sulfonates containing from 14 to 50 carbon atoms; said phenates contain from 12 to 50 carbon atoms, said fatty acids contain from about 8 to about 50 carbon atoms, and said tall oil acids contain from about 8 to about 50 carbon atoms.
Claim 5
Dependent Claim
28 words
The method of claim 1 wherein said metal alkoxides contain metals selected from the group consisting of calcium, magnesium, barium, strontium, zinc, aluminum, lead, copper, nickel, and cobalt.
Claim 6
Dependent Claim
35 words
The method of claim 1 wherein said metal dispersions contain metallic compounds selected from the group consisting of water-insoluble oxides, hydroxides, and carbonates of metals selected from the group consisting of calcium, barium, and magnesium.
Claim 7
Dependent Claim
42 words
The method of claim 2 wherein said metal alkoxide contains a metal selected from the group consisting of calcium, magnesium, and barium and said metal dispersion contains metallic compounds selected from the group consisting of calcium carbonate, barium carbonate, and magnesium carbonate.
Claim 8
Dependent Claim
27 words
The method of claim 1 wherein said composition is diluted with an inert organic solvent in an amount up to 90 weight percent of the diluted composition.
Claim 9
Dependent Claim
13 words
The method of claim 7 wherein said components are present in the proportions:
Claim 10
Dependent Claim
54 words
The method of claim 7 wherein said metal alkoxide is calcium alkoxide, said metal dispersion is a dispersion of calcium carbonate in calcium sulfonate, containing from 14 to about 50 carbon atoms and a nonvolatile carrier, said organic solvents are diesel oil and ethylene glycol monobutylether, and said components are present in the proportions:
Claim 11
Dependent Claim
55 words
The method of claim 7 wherein said metal alkoxide is magnesium alkoxide, said metal dispersion is a dispersion of calcium carbonate in calcium sulfonate, containing from 14 to about 50 carbon atoms and a nonvolatile carrier, said organic solvents are diesel oil and ethylene glycol monobutyl ether, and said components are present in the proportions:
Claim 12
Dependent Claim
54 words
The method of claim 7 wherein said metal alkoxide is barium alkoxide, said metal dispersion is a dispersion of calcium carbonate in calcium sulfonate, containing from 14 to about 50 carbon atoms and a nonvolatile carrier, said organic solvents are diesel oil and ethylene glycol monobutylether, and said components are present in the proportions:
Claim 13
Dependent Claim
18 words
The method of claim 1 wherein said composition is placed in the wellbore and forced into said formations.
Claim 14
Dependent Claim
17 words
The method of claim 1 wherein said composition is selectively injected into the formation to be modified.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |