CN1237145C - Cement fly ash profile control agent for plugging of oil and water well - Google Patents
Cement fly ash profile control agent for plugging of oil and water well Download PDFInfo
- Publication number
- CN1237145C CN1237145C CN 03132463 CN03132463A CN1237145C CN 1237145 C CN1237145 C CN 1237145C CN 03132463 CN03132463 CN 03132463 CN 03132463 A CN03132463 A CN 03132463A CN 1237145 C CN1237145 C CN 1237145C
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- Prior art keywords
- cement
- flyash
- oil
- present
- control agent
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000004568 cement Substances 0.000 title claims abstract description 23
- 239000010881 fly ash Substances 0.000 title claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 title abstract 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 11
- 229940037003 alum Drugs 0.000 claims abstract description 11
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 11
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 11
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 claims abstract description 11
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 11
- 239000001648 tannin Substances 0.000 claims abstract description 11
- 235000018553 tannin Nutrition 0.000 claims abstract description 11
- 229920001864 tannin Polymers 0.000 claims abstract description 11
- 238000006277 sulfonation reaction Methods 0.000 claims description 9
- HNNQYHFROJDYHQ-UHFFFAOYSA-N 3-(4-ethylcyclohexyl)propanoic acid 3-(3-ethylcyclopentyl)propanoic acid Chemical compound CCC1CCC(CCC(O)=O)C1.CCC1CCC(CCC(O)=O)CC1 HNNQYHFROJDYHQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 5
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- 239000000344 soap Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- -1 0 to 0.2 wt% of alum Substances 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention discloses a profile control agent for plugging oil-water wells, particularly a cement fly ash profile control agent for plugging oil-water wells. The present invention is made by the components of 10 to 15 wt% of sulphoaluminate superfine cement, 15 to 20 wt% of fly ash, 0.5 to 0.9 wt% of carboxymethylcellulose, 0.3 to 0.7 wt% of carboxymethyl hydroxyethyl cellulose, 0.2 to 0.5 wt% of WP-2 micro expansion agent, 0.1 to 0.2 wt% of sulphonation tannin, 0 to 0.2 wt% of alum, and water as the rest. The profile control agent of the present invention can be made by thoroughly mixing the components above. In the present invention, the special cement and the fly ash are used as cementitious materials so that the profile control agent has high intensity and low price; after the cementitious materials are added with the carboxymethylcellulose, the carboxymethyl hydroxyethyl cellulose, the sulphonation tannin and the alum, the profile control agent of the present invention has high flowability, long condensation time, and low dehydrating speed. The profile control agent of the present invention is suitable for deep plugging in wells. The present invention has the advantages of high strength, low cost and simple construction.
Description
Technical field:
The present invention relates to a kind of amendment that is used for the oil and water well shutoff.
Background technology:
When the oil field enters the ultra-high water-containing development phase, it is unbalanced that input profile appears in oil and water well, and water flooded grade is big, and the phenomenon of advancing by leaps and bounds in the high waterbearing stratum of production profile causes annotating and adopts invalid circulation.For the oil and water well that stable interlayer is arranged, implemented the common process measure, for the oil and water well of not stablizing interlayer or Restraining barrier, can only solve the problem of invalid cyclical field by the profile control shutoff.Present amendment kind is a lot, but amendment that has such as transfer drive type amendment plugging strength are not high, can be subjected to displacement behind the injection water, and the validity period of its use is also short.And amendment that has such as shutoff type amendment belong to organic series products, though certain intensity is arranged, the construction technology complexity, and cost is very high.
Summary of the invention:
The plugging strength that has for the amendment that overcomes prior art is low, the cost height that has, the defective that construction is complicated, a kind of intensity height is provided, low and the simple amendment of constructing of cost, the present invention is achieved by following scheme: a kind of cement, flyash amendment that is used for the oil and water well shutoff, and it is made by following component thorough mixing: (consumption is weight percentage) sulplo-aluminate superfine cement 10～15, flyash 15～20, carboxymethyl cellulose 0.5～0.9, carboxymethyl hydroxy ethyl cellulose 0.3～0.7, little swollen dose 0.2～0.5 of WP-2, sulfonation tannin 0.1～0.2, alum 0～0.2, all the other are water.Above-mentioned each component thorough mixing can be made amendment of the present invention.Adopt special cement and flyash as consolidating material among the present invention, make the price of high while of intensity of amendment cheap again, in consolidating material, add carboxymethyl cellulose with low cost, that suspension property stable, percentage of water loss is low, make amendment of the present invention have good pumpability.By adding little swollen dose of WP-2, the shrink that has solved cement is behind adding carboxymethyl hydroxy ethyl cellulose, sulfonation tannin and the alum, the flowability of amendment of the present invention improves, time of coagulation proper extension, the amendment dehydrating speed reduces, and is highly suitable for the shutoff in deep in the well.Amendment of the present invention pumped into to make it in the oil and water well to condense just finish profile control work, technology is very simple.Amendment of the present invention has the intensity height, cost is low and construct simple advantage.
Embodiment
Embodiment one: present embodiment is made by following component thorough mixing: (consumption is weight percentage) sulplo-aluminate superfine cement 10～12.5, flyash 15～17.5, carboxymethyl cellulose 0.5～0.75, carboxymethyl hydroxy ethyl cellulose 0.3～0.55, little swollen dose 0.2～0.35 of WP-2, sulfonation tannin 0.1～0.15, alum 0～0.1, all the other are water.
Embodiment two: present embodiment is made by following component thorough mixing: (consumption is weight percentage) sulplo-aluminate superfine cement 12.6～15, flyash 17.6～20, carboxymethyl cellulose 0.76～0.9, carboxymethyl hydroxy ethyl cellulose 0.56～0.7, little swollen dose 0.36～0.5 of WP-2, sulfonation tannin 0.16～0.2, alum 0.15～0.2, all the other are water.
Embodiment three: present embodiment is made by following component thorough mixing: (consumption be weight percentage) sulplo-aluminate superfine cement (granularity is below 20 microns) 12.4, flyash (granularity is below 40 microns) 18.6, little swollen dose (pure aluminium silicate 98%+ naphthenic acid is soap 2% early) 0.31 of carboxymethyl cellulose 0.682, carboxymethyl hydroxy ethyl cellulose 0.465, WP-2, sulfonation tannin 0.124, alum 0.124, all the other are water.Select for use and add sandpipe the present embodiment amendment is carried out plugging effect experiment, thus the shut-off capacity of quantitative analysis amendment.Divide basic, normal, high three perviousness intervals from top to bottom on rock core is vertical, its thickness is identical, presses positive rhythm, heterogeneous body, variation coefficient of permeability 0.72 design, mean permeability 1.5 μ mm
2, each section perm-plug method is respectively 0.3 μ mm
2, 0.8 μ mm
2, 3.6 μ mm
2Experimental result data is as follows:
| The rock core numbering | Rate of permeation (K before stifled 1/m 2) | Stifled back rate of permeation (K 2/m 2) | Sealing ratiod (%) | Residual resistance factor | Breakthrough pressure (MPa) |
| 1 | 18.230 | 0.004 | 99.9 | 4557.5 | 12 |
| 2 | 11.462 | 0.016 | 99.8 | 716.4 | 12 |
| 3 | 5.468 | 0.060 | 98.9 | 91.1 | 10 |
| 4 | 5.782 | 0.074 | 98.7 | 78.1 | 11 |
The plugging effect that test-results shows all rock cores is highly significant all.
Claims (6)
1, a kind of cement, flyash amendment that is used for the oil and water well shutoff, it is characterized in that it is made by following component thorough mixing: sulplo-aluminate superfine cement 10～15, flyash 15～20, carboxymethyl cellulose 0.5～0.9, carboxymethyl hydroxy ethyl cellulose 0.3～0.7, pure aluminium silicate and 2% naphthenic acid by 98% early little swollen dose 0.2～0.5 of forming of soap, sulfonation tannin 0.1～0.2, alum 0～0.2, all the other are water, the consumption of all components all is a weight percent.
2, a kind of cement, flyash amendment that is used for the oil and water well shutoff according to claim 1, it is characterized in that it is made by following component thorough mixing: sulplo-aluminate superfine cement 10～12.5, flyash 15～17.5, carboxymethyl cellulose 0.5～0.75, carboxymethyl hydroxy ethyl cellulose 0.3～0.55, pure aluminium silicate and 2% naphthenic acid by 98% early little swollen dose 0.2～0.35 of forming of soap, sulfonation tannin 0.1～0.15, alum 0～0.1, all the other are water, the consumption of all components all is a weight percent.
3, a kind of cement, flyash amendment that is used for the oil and water well shutoff according to claim 1, it is characterized in that it is made by following component thorough mixing: sulplo-aluminate superfine cement 12.6～15, flyash 17.6～20, carboxymethyl cellulose 0.76～0.9, carboxymethyl hydroxy ethyl cellulose 0.56～0.7, pure aluminium silicate and 2% naphthenic acid by 98% early little swollen dose 0.36～0.5 of forming of soap, sulfonation tannin 0.16～0.2, alum 0.15～0.2, all the other are water, the consumption of all components all is a weight percent.
4, a kind of cement, flyash amendment that is used for the oil and water well shutoff according to claim 1, it is characterized in that it is made by following component thorough mixing: sulplo-aluminate superfine cement 12.4, flyash 18.6, carboxymethyl cellulose 0.682, carboxymethyl hydroxy ethyl cellulose 0.465, pure aluminium silicate and 2% naphthenic acid by 98% early little swollen dose 0.31 of forming of soap, sulfonation tannin 0.124, alum 0.124, all the other are water, the consumption of all components all is a weight percent.
5, a kind of cement, flyash amendment that is used for the oil and water well shutoff according to claim 4, the granularity that it is characterized in that the sulplo-aluminate superfine cement is below 20 microns.
6, a kind of cement, flyash amendment that is used for the oil and water well shutoff according to claim 4, the granularity that it is characterized in that flyash is below 40 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132463 CN1237145C (en) | 2003-06-26 | 2003-06-26 | Cement fly ash profile control agent for plugging of oil and water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132463 CN1237145C (en) | 2003-06-26 | 2003-06-26 | Cement fly ash profile control agent for plugging of oil and water well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1566254A CN1566254A (en) | 2005-01-19 |
| CN1237145C true CN1237145C (en) | 2006-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03132463 Expired - Fee Related CN1237145C (en) | 2003-06-26 | 2003-06-26 | Cement fly ash profile control agent for plugging of oil and water well |
Country Status (1)
| Country | Link |
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| CN (1) | CN1237145C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387678C (en) * | 2006-06-28 | 2008-05-14 | 大庆油田有限责任公司 | Oil-layer blasthole plugging agent at low temperature |
| CN100375773C (en) * | 2006-09-11 | 2008-03-19 | 大庆油田有限责任公司 | Water plugging agent for water injection well preparing from discarded oil-containing sludge |
| CN101451061B (en) * | 2008-12-30 | 2011-03-16 | 山东大学 | Sand consolidation and water plugging profile control agent made by oil sand |
| CN101898860B (en) * | 2010-08-05 | 2012-05-23 | 武汉工程大学 | Inorganic profile control agent with oil sludge and application method thereof |
| CN102181274B (en) * | 2011-03-30 | 2013-07-10 | 中国石油天然气股份有限公司 | Thixotropic chemical blocking agent |
| CN102391845B (en) * | 2011-09-13 | 2016-07-27 | 任丘市奥源石油科技有限公司 | A kind of composite chemical blocking agent |
| CN104250547B (en) * | 2013-06-29 | 2017-05-24 | 中国石油化工股份有限公司 | Modified biogel particles blocking agent used for precision screen pipe of thick oil horizontal well |
| CN103614126A (en) * | 2013-10-21 | 2014-03-05 | 中国石油大学(华东) | Temperature-resistant salt-tolerate inorganic particle water-blocking agent |
| CN104449608B (en) * | 2014-11-11 | 2017-03-15 | 四川恒益科技有限公司 | A kind of drilling fluid hyposmosis sealing agent and preparation method thereof of utilization filter pressing waste residue production |
| CN105018054A (en) * | 2015-07-21 | 2015-11-04 | 嘉华特种水泥股份有限公司 | Oil and gas well sealing plugging agent |
| CN105733534A (en) * | 2016-03-04 | 2016-07-06 | 中国石油集团渤海钻探工程有限公司 | Water-plugging gel cement slurry and preparation method thereof |
| CN108395884A (en) * | 2018-04-12 | 2018-08-14 | 盘锦阳辉科技有限公司 | High-temperature-resistant water shutoff profile control agent and preparation method thereof |
| CN112266773A (en) * | 2020-10-22 | 2021-01-26 | 中国石油大学(华东) | Fly ash/amphiphilic polymer composite gel profile control agent, preparation method and application |
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2003
- 2003-06-26 CN CN 03132463 patent/CN1237145C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1566254A (en) | 2005-01-19 |
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Granted publication date: 20060118 Termination date: 20100626 |