CA2036734A1 - Treating underground formations - Google Patents
Treating underground formationsInfo
- Publication number
- CA2036734A1 CA2036734A1 CA 2036734 CA2036734A CA2036734A1 CA 2036734 A1 CA2036734 A1 CA 2036734A1 CA 2036734 CA2036734 CA 2036734 CA 2036734 A CA2036734 A CA 2036734A CA 2036734 A1 CA2036734 A1 CA 2036734A1
- Authority
- CA
- Canada
- Prior art keywords
- water
- percent
- treating fluid
- producing
- furfuryl alcohol
- 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
- 230000015572 biosynthetic process Effects 0.000 title abstract 4
- 238000005755 formation reaction Methods 0.000 title 1
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 abstract 9
- 239000012530 fluid Substances 0.000 abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract 3
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 abstract 1
- SLAMLWHELXOEJZ-UHFFFAOYSA-N 2-nitrobenzoic acid Chemical group OC(=O)C1=CC=CC=C1[N+]([O-])=O SLAMLWHELXOEJZ-UHFFFAOYSA-N 0.000 abstract 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 abstract 1
- 229920002472 Starch Polymers 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 150000003926 acrylamides Chemical class 0.000 abstract 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 235000019698 starch Nutrition 0.000 abstract 1
- 239000008107 starch Substances 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 229920001059 synthetic polymer Polymers 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Wells penetrating oil-producing and water-producing intervals may be treated in order to reduce the flow rate of water into the well by isolating the water-producing interval and introducing into it a volume of treating fluids sufficient to invade at least six inches into the water-producing interval.
Cased wells may be treated to plug holes in the casing caused by corrosion or casing breaks by introducing a treating fluid into the formation adjacent to the break. The treating fluid comprises a material which can be acid catalyzed in a period of from 1 to 16 hours at formation conditions, preferably a monomer or oligomer of furfuryl alcohol. The treating fluid contains from 40 to 60 percent furfuryl alcohol and from 40 to 60 percent of an ester, preferably ethyl acetate or butyl acetate. The catalyst is preferably orthonitrobenzoic acid or toluene sulfonic acid in a concentration of from 1 to 4 percent by weight, selected to produce a set time at the formation temperature in the range of from 1 to 16 hours. The treating fluid also contains an effective amount in the range of .5 to 1.5 percent of a water swelling polymer, preferably a copolymer of starch and synthetic polymer (acrylates or acrylamides) to prevent shrinkage of the furfuryl alcohol on polymerization.
Cased wells may be treated to plug holes in the casing caused by corrosion or casing breaks by introducing a treating fluid into the formation adjacent to the break. The treating fluid comprises a material which can be acid catalyzed in a period of from 1 to 16 hours at formation conditions, preferably a monomer or oligomer of furfuryl alcohol. The treating fluid contains from 40 to 60 percent furfuryl alcohol and from 40 to 60 percent of an ester, preferably ethyl acetate or butyl acetate. The catalyst is preferably orthonitrobenzoic acid or toluene sulfonic acid in a concentration of from 1 to 4 percent by weight, selected to produce a set time at the formation temperature in the range of from 1 to 16 hours. The treating fluid also contains an effective amount in the range of .5 to 1.5 percent of a water swelling polymer, preferably a copolymer of starch and synthetic polymer (acrylates or acrylamides) to prevent shrinkage of the furfuryl alcohol on polymerization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2036734 CA2036734C (en) | 1991-02-20 | 1991-02-20 | Treating underground formations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2036734 CA2036734C (en) | 1991-02-20 | 1991-02-20 | Treating underground formations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2036734A1 true CA2036734A1 (en) | 1992-08-21 |
| CA2036734C CA2036734C (en) | 1999-03-09 |
Family
ID=4147025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2036734 Expired - Fee Related CA2036734C (en) | 1991-02-20 | 1991-02-20 | Treating underground formations |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2036734C (en) |
-
1991
- 1991-02-20 CA CA 2036734 patent/CA2036734C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2036734C (en) | 1999-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |