Patent US3724549A successfully refreshed from Google Patents.
US3724549A
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US
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Oil soluble diverting material and method of use for well treatment
Assignee: Halliburton Co
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Filing: 1971-02-01
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Granted: 1973-04-03
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Expires: 1991-02-01
Abstract
Abstract The present invention relates to an oil soluble bridging agent for diverting oil well treating fluids to less permeable portions of an oil-producing subterranean formation having temperatures up to about 360*F.
Inventors
- 👤 W Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:28
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/70; C09K8/66; E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/261; C09K2208/00; C09K2208/18
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
61 words
The diverting material of claim 1 wherein about 7 percent by weight of said resin present does not pass through size 4 mesh (U.S. Sieve Series), about 12 percent by weight of said resin present does pass through size 170 mesh (U.S. Sieve Series), and the weight balance of said resin varies in size between about 4 and about 170 mesh.
Claim 2
Dependent Claim
41 words
The diverting material of claim 2 wherein said aqueous carrier liquid is selected from the group consisting of water, aqueous acid solutions, hydrocarbon-in-water emulsions, water gelled with gums, cellulose, polysaccharides, and polyacrylamides, and acids gelled with gums, cellulose, polysaccharides, and polyacrylamides.
Claim 3
Dependent Claim
18 words
The diverting material of claim 2 further characterized by the addition of a surfactant to the carrier liquid.
Claim 4
Dependent Claim
28 words
The diverting material of claim 2 wherein said resin is present in said carrier liquid in a concentration of from about 0.25 to about 2.00 pounds per gallon.
Claim 5
Dependent Claim
34 words
The diverting material of claim 2 wherein said resin is selected from the group consisting of alkyl aromatic resins, indene-methyl indene polymers, pentaerythritol ester of polymerized rosin and pentaerythritol ester of dimeric resin acids.
Claim 6
Dependent Claim
11 words
The diverting material of claim 6 wherein said resin is dicyclopentadiene.
Claim 7
Independent Claim
140 words
The method of diverting aqueous oil well treating fluids to less permeable portions of a subterranean formation, which comprises the steps of: pumping into said formation a diverting material which comprises a. an aqueous carrier liquid having dispersed therein in graded particulate form b. an oil soluble, cyclic or straight-chain hydrocarbon resin having from about 20 to about 1,400 carbon atoms and a melting point of at least about 200*F, wherein said resin has a particle size distribution in the range of about 3 to about 200 mesh (U.S. Sieve Series) and is present in said carrier liquid in a concentration in the range of about 0.12 to about 3.0 pounds per gallon, whereby said resin bridges across and seals the most porous portions of said formation, diverting the flow of treating fluid to less permeable portions of said formation.
Claim 8
Dependent Claim
60 words
The method of claim 8 wherein about 7 percent by weight of said resin present does not pass through size 4 mesh (U.S. Sieve Series), about 12 percent by weight of said resin present does pass through size 170 mesh (U.S. Sieve Series), and the weight balance of said resin varies in size between about 4 and about 170 mesh.
Claim 9
Dependent Claim
40 words
The method of claim 9 wherein said aqueous carrier liquid is selected from the group consisting of water, aqueous acid solutions, hydrocarbon-in-water emulsions, water gelled with gums, cellulose, polysaccharides, and polyacrylamides, and acids gelled with gums, cellulose, polysaccharides, and polyacrylamides.
Claim 10
Dependent Claim
17 words
The method of claim 9 further characterized by the addition of a surfactant to the carrier liquid.
Claim 11
Dependent Claim
27 words
The method of claim 9 wherein said resin is present in said carrier liquid in a concentration of from about 0.25 to about 2.00 pounds per gallon.
Claim 12
Dependent Claim
32 words
The method of claim 9 wherein said resin is selected from the group consisting of alkyl aromatic resins,indenemethyl indene polymers, pentaerythritol ester of polymerized rosin and pentaerythritol ester of dimeric resin acids.
Claim 13
Dependent Claim
10 words
The method of claim 15 wherein said resin is dicyclopentadiene.
Claim 14
Dependent Claim
16 words
The method of claim 9 wherein the aqueous oil well treating fluid is the carrier liquid.
Claim 15
Dependent Claim
16 words
The method of claim 9 wherein the diverting agent is pumped continuously into the subterranean formation.
Claim 16
Dependent Claim
16 words
The method of claim 9 wherein the diverting agent is pumped intermittently into the subterranean formation.
References Cited (Backward Citations)
US3173484A
Cited
US3316965A
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US3302719A
Cited
US3370650A
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US3319716A
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US3601194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |