GB1470986A - Polymer water flooding by controlling water hardness - Google Patents
Polymer water flooding by controlling water hardnessInfo
- Publication number
- GB1470986A GB1470986A GB3333074A GB3333074A GB1470986A GB 1470986 A GB1470986 A GB 1470986A GB 3333074 A GB3333074 A GB 3333074A GB 3333074 A GB3333074 A GB 3333074A GB 1470986 A GB1470986 A GB 1470986A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cations
- solution
- biopolymer
- case
- salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
- C09K8/905—Biopolymers
Abstract
1470986 Oil recovery MARATHON OIL CO 29 July 1974 [17 Aug 1973 29 Aug 1973] 33330/74 Heading E1F The mobility of fluids in a porous formation is controlled by introducing therein an aqueous solution containing a salt-sensitive polymer or a biopolymer and divalent and/or trivalent cations, the cations being effective, in the case of a salt-sensitive polymer solution, to increase the permeability of the formation with respect thereto, and, in the case of a biopolymer solution, to decrease the permeability of the formation with respect thereto. The cations may be introduced into the solution either before or after injection. The saltsensitive polymer may be a partially hydrolysed, high molecular weight polyacrylamide and the biopolymer may be a polysaccharide. The cations are preferably Ca<SP>++</SP> and/or Mg<SP>++</SP>, although examples of other cations are described, in a concentration, in the case of a salt-sensitive polymer solution, in the range of from 10-15,000 mg/l, and, in the case of a biopolymer solution, in the range of from 50-20,000 mg/l.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US389082A US3888309A (en) | 1973-08-17 | 1973-08-17 | Polymer waterflooding by controlling water hardness |
| US39259573A | 1973-08-29 | 1973-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1470986A true GB1470986A (en) | 1977-04-21 |
Family
ID=27012548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3333074A Expired GB1470986A (en) | 1973-08-17 | 1974-07-29 | Polymer water flooding by controlling water hardness |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT335394B (en) |
| BR (1) | BR7406776D0 (en) |
| DD (1) | DD115179A1 (en) |
| EG (1) | EG11871A (en) |
| FR (1) | FR2240998B1 (en) |
| GB (1) | GB1470986A (en) |
| RO (1) | RO71290A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4518511A (en) * | 1979-11-21 | 1985-05-21 | American Cyanamid Company | Delivery of polymeric antiprecipitants in oil wells employing an oil soluble carrier system |
-
1974
- 1974-07-29 GB GB3333074A patent/GB1470986A/en not_active Expired
- 1974-08-09 FR FR7427713A patent/FR2240998B1/fr not_active Expired
- 1974-08-10 EG EG32674A patent/EG11871A/en active
- 1974-08-12 RO RO7479739A patent/RO71290A/en unknown
- 1974-08-16 DD DD18055474A patent/DD115179A1/xx unknown
- 1974-08-16 BR BR677674A patent/BR7406776D0/en unknown
- 1974-08-19 AT AT675274A patent/AT335394B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AT335394B (en) | 1977-03-10 |
| ATA675274A (en) | 1976-07-15 |
| DD115179A1 (en) | 1975-09-12 |
| EG11871A (en) | 1977-11-30 |
| RO71290A (en) | 1982-05-10 |
| DE2430934B2 (en) | 1977-05-05 |
| BR7406776D0 (en) | 1975-09-09 |
| FR2240998B1 (en) | 1978-11-24 |
| FR2240998A1 (en) | 1975-03-14 |
| DE2430934A1 (en) | 1975-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |