GB1458607A - Composition and method of removing scale from oil wells - Google Patents
Composition and method of removing scale from oil wellsInfo
- Publication number
- GB1458607A GB1458607A GB4934474A GB4934474A GB1458607A GB 1458607 A GB1458607 A GB 1458607A GB 4934474 A GB4934474 A GB 4934474A GB 4934474 A GB4934474 A GB 4934474A GB 1458607 A GB1458607 A GB 1458607A
- Authority
- GB
- United Kingdom
- Prior art keywords
- composition
- alkali metal
- well
- oil
- kerosene
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Detergent Compositions (AREA)
- Lubricants (AREA)
Abstract
1458607 Scale removal BORG WARNER CORP 14 Nov 1974 [14 Nov 1973] 49344/74 Heading C7E [Also in Division E1] A composition for removing scale from oil-well bores and associated equipment comprises an aqueous solution containing # 5 wt per cent of an amino polycarboxylic acid or an ammonium, amine, or alkali metal salt thereof and # 1 wt per cent of an ammonium, amine or alkali metal borate, tetraborate or metaborate, and has pH>8. The acid may be EDTA or nitrilotriacetic acid, e.g. in amount 5-12%, the borate may be 1-5% of borax. The composition optionally contains a surfactant, e.g. an alkanolamide or ethoxylated phenol, or a freezing-point depressant, e.g. ethylene glycol; the pH is adjusted with NH 4 OH or alkali metal oxide or hydroxide. In use, an oil-well may be flushed with kerosene, then the production tubing is filled with the composition, optionally capped by kerosene, left for 24 hours and then the well put back into production. A fluid-friction reducing compound may be added to the composition, e.g. polyacrylonitrile or polyethylene oxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41557373A | 1973-11-14 | 1973-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1458607A true GB1458607A (en) | 1976-12-15 |
Family
ID=23646259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4934474A Expired GB1458607A (en) | 1973-11-14 | 1974-11-14 | Composition and method of removing scale from oil wells |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1058854A (en) |
| GB (1) | GB1458607A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2158487A (en) * | 1984-05-11 | 1985-11-13 | Dow Chemical Co | Gelled acid composition for acidizing subterranean formations |
| EP0224346A2 (en) * | 1985-11-21 | 1987-06-03 | Union Oil Company Of California | Scale removal treatment in subterranean formations |
| US9890623B2 (en) | 2012-06-07 | 2018-02-13 | University Of Leeds | Method of inhibiting scale in a geological formation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600953A (en) * | 2015-12-22 | 2016-05-25 | 常州科威天使环保科技股份有限公司 | Non-phosphorus scale and corrosion inhibitor for recirculating cooling water system, as well as preparation method and application of non-phosphorus scale and corrosion inhibitor |
-
1974
- 1974-11-08 CA CA213,387A patent/CA1058854A/en not_active Expired
- 1974-11-14 GB GB4934474A patent/GB1458607A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2158487A (en) * | 1984-05-11 | 1985-11-13 | Dow Chemical Co | Gelled acid composition for acidizing subterranean formations |
| EP0224346A2 (en) * | 1985-11-21 | 1987-06-03 | Union Oil Company Of California | Scale removal treatment in subterranean formations |
| EP0224346A3 (en) * | 1985-11-21 | 1989-01-18 | Union Oil Company Of California | Scale removal treatment |
| US9890623B2 (en) | 2012-06-07 | 2018-02-13 | University Of Leeds | Method of inhibiting scale in a geological formation |
Also Published As
| Publication number | Publication date |
|---|---|
| CA1058854A (en) | 1979-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |