CA2191512A1 - Process for reducing permeability in a subterranean formation - Google Patents
Process for reducing permeability in a subterranean formationInfo
- Publication number
- CA2191512A1 CA2191512A1 CA002191512A CA2191512A CA2191512A1 CA 2191512 A1 CA2191512 A1 CA 2191512A1 CA 002191512 A CA002191512 A CA 002191512A CA 2191512 A CA2191512 A CA 2191512A CA 2191512 A1 CA2191512 A1 CA 2191512A1
- Authority
- CA
- Canada
- Prior art keywords
- clay
- swelling
- slurry
- cations
- inhibitive
- 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 3
- 230000035699 permeability Effects 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 239000004927 clay Substances 0.000 abstract 8
- 230000008961 swelling Effects 0.000 abstract 5
- 150000001768 cations Chemical class 0.000 abstract 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 2
- 238000005755 formation reaction Methods 0.000 abstract 2
- 230000002401 inhibitory effect Effects 0.000 abstract 2
- 239000002002 slurry Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 229910000278 bentonite Inorganic materials 0.000 abstract 1
- 239000000440 bentonite Substances 0.000 abstract 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 abstract 1
- 239000012267 brine Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
A method is provided for blocking high permeability channels in subterranean geological formations, using swelling clay. A slurry is prepared by mixing swelling clay, such as bentonite, into an aqueous solution containing the salt of certain cations, which inhibit clay swelling. The cations K~, Ca2~ and Mg2~, among others, are inhibitive of clay swelling. The clay slurry is introduced into a geological formation, where it preferentialy enters channels of high permeability. There the slurry is contacted by NaCl brine solution present in natural or injected drive fluids, and the inhibitive cations bound to the clay particles are replaced by Na~ ions, which attract water molecules and promote clay swelling. The Na~ - clay swells to up to 10 times its original volume, causing the shiny to acquire a gel- like consistency. The clay gel so formed is capable of blocking the flow of water, and can resist pressure of up to 500 kPa per meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002191512A CA2191512C (en) | 1996-11-28 | 1996-11-28 | Process for reducing permeability in a subterranean formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002191512A CA2191512C (en) | 1996-11-28 | 1996-11-28 | Process for reducing permeability in a subterranean formation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2191512A1 true CA2191512A1 (en) | 1998-05-28 |
| CA2191512C CA2191512C (en) | 2003-08-05 |
Family
ID=4159331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002191512A Expired - Lifetime CA2191512C (en) | 1996-11-28 | 1996-11-28 | Process for reducing permeability in a subterranean formation |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2191512C (en) |
-
1996
- 1996-11-28 CA CA002191512A patent/CA2191512C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2191512C (en) | 2003-08-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20161128 |