CA2705597A1 - Methods and compositions for acidization in a wellbore using an ester or polyester of a glycerol - Google Patents
Methods and compositions for acidization in a wellbore using an ester or polyester of a glycerol Download PDFInfo
- Publication number
- CA2705597A1 CA2705597A1 CA2705597A CA2705597A CA2705597A1 CA 2705597 A1 CA2705597 A1 CA 2705597A1 CA 2705597 A CA2705597 A CA 2705597A CA 2705597 A CA2705597 A CA 2705597A CA 2705597 A1 CA2705597 A1 CA 2705597A1
- Authority
- CA
- Canada
- Prior art keywords
- ester
- polyester
- glycerol
- well
- acidization
- 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.)
- Granted
Links
- GDOPTJXRTPNYNR-UHFFFAOYSA-N CC1CCCC1 Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 1
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
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
-
- 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
Abstract
Improved acidization methods and compositions are provided wherein the compositions comprise an aqueous solution comprising one or more esters or polyesters of hydroxy acid or of glycerol. The solution may be placed in a well where the esters or polyesters undergo hydrolysis. The hydrolysis of the esters or polyesters occurs at a slower reaction rate than that of several other known acidization esters, such as diethyleneglycol diformate, at temperatures higher than 600C or even higher than 1000C. Thus, the acidization solution may be distributed substantially through a region in a well where acidization is required before hydrolysis is completed, despite being exposed to relatively high temperatures. The hydrolysis may result in the slow release of an acid that is capable of consuming all or most of an undesirable substance in the well, e.g., a filter cake.
Claims (10)
1. A method of acidizing in a well, comprising:
placing an aqueous solution comprising an ester or polyester of a glycerol in a well, wherein the aqueous solution is substantially absent of a hydrocarbon, allowing the ester or polyester to undergo hydrolysis to form a hydroxy acid and, allowing the hydroxy acid to degrade a least a portion of a filter cake.
placing an aqueous solution comprising an ester or polyester of a glycerol in a well, wherein the aqueous solution is substantially absent of a hydrocarbon, allowing the ester or polyester to undergo hydrolysis to form a hydroxy acid and, allowing the hydroxy acid to degrade a least a portion of a filter cake.
2. The method of claim 1, wherein the temperature effective for the hydrolysis reaction is in a range of from about 60°C. to about 150°C. in the well.
3. The method of claim 1, wherein a half-life of the ester or polyester of the glycerol is effective to allow it to be pumped substantially throughout the region in the well where the acidization is required.
4. The method of claim 1, wherein the ester or polyester of the glycerol has a half-life in a range of from about 6 to about 16 hours when hydrolyzed with neutral water at 100°C.
5. The method of claim 1, wherein the ester or polyester of the glycerol has a half-life in a range of from about 8 to about 13 hours when hydrolyzed with neutral water at 100°C.
6. The method of claim 1, wherein the ester or polyester of the glycerol comprises triacetin, diacetin, monoacetin, tripropionin, trilactin, or combinations thereof.
7. The method of claim 1, wherein the aqueous solution comprises neutral water or salt water.
8. The method of claim 1, further comprising combining the ester or polyester of the glycerol with another type of ester before placing it in the well.
9. The method of claim 8, wherein the another type of ester comprises diethyleneglycol diformate, diethyleneglycolmonoformate, monoethyleglycoldiformate, monoethyleneglycolmonofrmate or combinations thereof.
10. The method of claim 1, wherein an acid formed by the hydrolysis is used to repair a subterranean formation adjacent to the well.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/336,475 US7431088B2 (en) | 2006-01-20 | 2006-01-20 | Methods of controlled acidization in a wellbore |
| US11/336,474 | 2006-01-20 | ||
| US11/336,474 US20070173416A1 (en) | 2006-01-20 | 2006-01-20 | Well treatment compositions for use in acidizing a well |
| US11/336,475 | 2006-01-20 | ||
| CA2637734A CA2637734C (en) | 2006-01-20 | 2007-01-19 | Methods and compositions for acidization in a wellbore |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2637734A Division CA2637734C (en) | 2006-01-20 | 2007-01-19 | Methods and compositions for acidization in a wellbore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2705597A1 true CA2705597A1 (en) | 2007-07-26 |
| CA2705597C CA2705597C (en) | 2011-07-12 |
Family
ID=37964606
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2705597A Expired - Fee Related CA2705597C (en) | 2006-01-20 | 2007-01-19 | Methods and compositions for acidization in a wellbore using an ester or polyester of a glycerol |
| CA2637734A Expired - Fee Related CA2637734C (en) | 2006-01-20 | 2007-01-19 | Methods and compositions for acidization in a wellbore |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2637734A Expired - Fee Related CA2637734C (en) | 2006-01-20 | 2007-01-19 | Methods and compositions for acidization in a wellbore |
Country Status (14)
| Country | Link |
|---|---|
| US (2) | US7431088B2 (en) |
| EP (1) | EP1979433B1 (en) |
| AR (1) | AR059140A1 (en) |
| AU (1) | AU2007206784B2 (en) |
| BR (1) | BRPI0707170B1 (en) |
| CA (2) | CA2705597C (en) |
| DK (1) | DK1979433T3 (en) |
| EA (1) | EA014342B1 (en) |
| EC (1) | ECSP088637A (en) |
| EG (1) | EG26613A (en) |
| MX (1) | MX2008009332A (en) |
| MY (1) | MY145435A (en) |
| NO (1) | NO20083043L (en) |
| WO (1) | WO2007083128A1 (en) |
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| GB0724191D0 (en) * | 2007-12-11 | 2008-01-23 | Cleansorb Ltd | Process fpr treatment of underground formations |
| US7906464B2 (en) | 2008-05-13 | 2011-03-15 | Halliburton Energy Services, Inc. | Compositions and methods for the removal of oil-based filtercakes |
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| US9796919B2 (en) | 2014-06-24 | 2017-10-24 | Saudi Arabian Oil Company | Encapsulation of an acid precursor for oil field applications |
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| CN106350046A (en) * | 2016-08-30 | 2017-01-25 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Temperature control mud cake cleaning liquid and preparing method as well as application |
| US20180282609A1 (en) * | 2017-03-30 | 2018-10-04 | The University Of North Carolina At Chapel Hill | Titanium Chloride Encapsulation for Acid Generation |
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-
2006
- 2006-01-20 US US11/336,475 patent/US7431088B2/en active Active
- 2006-01-20 US US11/336,474 patent/US20070173416A1/en not_active Abandoned
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2007
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- 2007-01-19 BR BRPI0707170-1A patent/BRPI0707170B1/en not_active IP Right Cessation
- 2007-01-19 MY MYPI20082658A patent/MY145435A/en unknown
- 2007-01-19 WO PCT/GB2007/000160 patent/WO2007083128A1/en active Application Filing
- 2007-01-19 EP EP07704940.1A patent/EP1979433B1/en active Active
- 2007-01-19 EA EA200870184A patent/EA014342B1/en not_active IP Right Cessation
- 2007-01-19 AU AU2007206784A patent/AU2007206784B2/en not_active Ceased
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| CA2637734A1 (en) | 2007-07-26 |
| AU2007206784A1 (en) | 2007-07-26 |
| AR059140A1 (en) | 2008-03-12 |
| BRPI0707170A2 (en) | 2011-04-26 |
| US20070173416A1 (en) | 2007-07-26 |
| US7431088B2 (en) | 2008-10-07 |
| DK1979433T3 (en) | 2016-04-18 |
| EP1979433A1 (en) | 2008-10-15 |
| EP1979433B1 (en) | 2016-03-16 |
| MX2008009332A (en) | 2009-01-30 |
| NO20083043L (en) | 2008-08-20 |
| BRPI0707170B1 (en) | 2019-05-07 |
| CA2705597C (en) | 2011-07-12 |
| WO2007083128A1 (en) | 2007-07-26 |
| US20070169938A1 (en) | 2007-07-26 |
| EA200870184A1 (en) | 2009-02-27 |
| ECSP088637A (en) | 2008-08-29 |
| AU2007206784B2 (en) | 2011-03-03 |
| EG26613A (en) | 2014-04-02 |
| MY145435A (en) | 2012-02-15 |
| CA2637734C (en) | 2012-06-05 |
| EA014342B1 (en) | 2010-10-29 |
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