CN102391845B - A kind of composite chemical blocking agent - Google Patents
A kind of composite chemical blocking agent Download PDFInfo
- Publication number
- CN102391845B CN102391845B CN201110268997.5A CN201110268997A CN102391845B CN 102391845 B CN102391845 B CN 102391845B CN 201110268997 A CN201110268997 A CN 201110268997A CN 102391845 B CN102391845 B CN 102391845B
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- Prior art keywords
- agent
- solidification
- blocking agent
- composite chemical
- chemical blocking
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- 239000000126 substance Substances 0.000 title claims abstract description 24
- 239000002981 blocking agent Substances 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- 238000007711 solidification Methods 0.000 claims abstract description 27
- 230000008023 solidification Effects 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 16
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 239000003129 oil well Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000003607 modifier Substances 0.000 description 5
- 239000004606 Fillers/Extenders Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000004520 agglutination Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention relates to a kind of composite chemical blocking agent.This chemical plugging agent is made up of structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and water conservation adjustable solidification agent etc..Composite chemical blocking agent in the present invention, compared with traditional oil-well cement blocking agent, has the advantage such as working security height, closure success rate high, plugging strength big, effect duration length, resistance to high salinity, High Temperature High Pressure.This composite chemical blocking agent is used for Oil/gas Well chemical plugging and envelope is altered process and all obtained good result.
Description
Technical field
The present invention relates to chemical plugging Technology field, be specifically related to a kind of composite chemical blocking agent.
Background technology
Persisting exploitation along with oil gas field, reserves exploitation degree improves constantly, oil-gas reservoir water yield and water outlet gas well number increase rapidly, various contradictions and problem progressively manifest, particularly Oil/gas Well enters the late high water content period development phase, due to Geological Reasons, cementing quality problem, shake out serious, alter layer, Bian Shui, bottom water is advanced by leaps and bounds, some Oil/gas Wells are made to cross early leaving or water logging, water outlet has become as the key factor of restriction gas field production capacity, it is mainly reflected in: oil gas field entirety water outlet quickly increases oil, gas, water relation is complicated, pit shaft hydrops rule is failed to understand, well yield is successively decreased substantially, yield declines rapidly, dead well increases oil gas field Influence of production fairly obvious year by year, working condition in the urgent need to improving water-producing gas well delays the water outlet impact on yield.
The research of oilfield chemistry sealing agent and application have been increasingly subject to the attention of world oil, petrochemical industry, geology, chemist.Current scientific worker has developed the multinomial chemical plugging technology such as waterglass high intensity chemical water shutoff, polymer water plugging and envelope is altered, high polymer single-fluid process chemical water shutoff.These water-plugging techniques serve important function in oil field development, but waterglass high intensity techniques of chemical water plugging complicated construction technique, difficulty are big, danger is relatively big, and sealing agent consumption is big, long construction period, de-plugging difficulty are bigger；Shorter with the solidifying blocking agent gel time of cyanogen that polyurethane is bulk composition, consumption is few, and plugging strength is high, but complex process, danger is higher, and closure thickness is little, should not use during the closure of big section.Therefore, strengthen the preparation of novel blocking agent, improve plugging effect, reduce construction operation cost, promote economic benefit, remain the important topic of oil well chemical closure work studies.
Summary of the invention
In order to solve above-mentioned purpose, the invention provides a kind of high performance compound chemical plugging agent.
The technical solution used in the present invention is: a kind of composite chemical blocking agent, including structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and water conservation adjustable solidification agent, mass ratio shared by wherein said structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and water conservation adjustable solidification agent is respectively as follows: 60%-80%, 15%-35%, 2%-3%, 3%-5%, 3%-5%.
Described structure-forming agent is a kind of oil-well cement preferably, it is particularly preferred that G level high resistance cement or superfine cement.(200-600 order waits radius for different holes).
Described solidification intensifier is preferably the one of flyash.(the further filling hole of subparticle improves fine and close comprcssive strength (48h water-bath) > 14MPa (the full ungauged regions phenomenon of test block))
Described fiber plasticity reinforcing agent preferably easily disperses polypropylene fibre.(improve toughness and improve stratum and interface agglutination performance)
Described suspension stabilizer is superfine silicon dioxide and mineral fibres 1: 1.(improve suspending power and increase internal sizes knotting strength)
Described water conservation adjustable solidification agent is polyacrylamide, polyvinyl alcohol, many methylcellulose 1: 2: 2.(reduce syneresis rate (standing) < 1.4%/120min, regulate presetting period > 8 hours, final setting time < 36 hours, Applicable temperature 50-90 DEG C, salinity Ca++=1500mg/L, Mg++=1000mg/L, Cl-=150000mg/L, total salinity=200000mg/L.)
The invention has the beneficial effects as follows: the present invention is based on reservoir properties and closure mechanism, have developed a kind of novel composite high-performance chemical plugging agent, simultaneously, in implementation process, improve in construction technology, as: inject the technology such as displacement control, control of injection pressure, pressure balance control, operating tool string, on-the-spot application achieves good effect.
Detailed description of the invention
A kind of composite chemical blocking agent, including structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and water conservation adjustable solidification agent, mass ratio shared by wherein said structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and water conservation adjustable solidification agent is respectively as follows: 60%-80%, 15%-35%, 2%-3%, 3%-5%, 3%-5%.
Described structure-forming agent is a kind of oil-well cement preferably, it is particularly preferred that G level high resistance cement or superfine cement.(200-600 order waits radius for different holes).
Described solidification intensifier is preferably the one of flyash.(the further filling hole of subparticle improves fine and close comprcssive strength (48h water-bath) > 14MPa (the full ungauged regions phenomenon of test block))
Described fiber plasticity reinforcing agent preferably easily disperses polypropylene fibre.(improve toughness and improve stratum and interface agglutination performance)
Described suspension stabilizer is superfine silicon dioxide and mineral fibres 1: 1.(improve suspending power and increase internal sizes knotting strength)
Described water conservation adjustable solidification agent is polyacrylamide, polyvinyl alcohol, many methylcellulose 1: 2: 2.(reduce syneresis rate (standing) < 1.4%/120min, regulate presetting period > 8 hours, final setting time < 36 hours, Applicable temperature 50-90 DEG C, salinity Ca++=1500mg/L, Mg++=1000mg/L, Cl-=150000mg/L, total salinity=200000mg/L.)
The following is one embodiment of the present of invention, the actually used of the present invention is not limited thereto embodiment.
Embodiment 1:
A kind of composite chemical blocking agent, including structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, extender and properties modifier, mass ratio shared by wherein said structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, extender and properties modifier is respectively as follows: 60%-80%, 15%-35%, 0.3%-0.35%, 3%-5%, 0.2%-0.25%.
Embodiment 2
A kind of composite chemical blocking agent, including structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, extender and properties modifier, mass ratio shared by wherein said structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, extender and properties modifier is respectively as follows: 67%, 20%, 3%, 5%, 5%.
At well using other to block after unsuccessfully, adopting composite plugging agent of the present invention to block, on-the-spot employing adopts construction technology under oil jacket balancing processing flow process, envelope.
Closure: on-the-spot two 7m3 agitator tanks configuration blocking agent 15m3 density 1.75g/cm3 (structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and properties modifier, mass ratio shared by wherein said structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and property water conservation adjustable solidification agent respectively 67%, 20%, 3%, 5%, 5%).Operation pressure is risen to 16MPa construction once success by 3MPa.
For the advantage of composite plugging agent of the present invention is described, having done following performance measurement, its specific performance parametric measurement is as shown in the table:
The composite multifunction chemical plugging agent of preparation is carried out correlation performance parameters measurement result table
| Sequence number | Project | Performance |
| 1 | Density | 1.6-1.85g/cm3Between adjustable |
| 2 | Fluidity | > 20cm (after being sufficiently stirred for, pumpability is good) |
| 3 | Syneresis rate (stands 120min) | < 1.4% |
| 4 | Thickening time | > 6 hours, room temperature 24h does not coagulate |
| 5 | Presetting period | > 8 hours |
| 6 | Final setting time | < 36 hours |
| 7 | Applicable temperature | 50-120℃ |
| 8 | Comprcssive strength (48h water-bath) | > 14MPa (the full ungauged regions phenomenon of test block) |
Claims (3)
1. a composite chemical blocking agent, it is characterized in that, including structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and water conservation adjustable solidification agent, mass ratio respectively 60%-80% shared by wherein said structure-forming agent, solidification intensifier, fiber plasticity reinforcing agent, suspension stabilizer and water conservation adjustable solidification agent, 15%-35%, 2%-3%, 3%-5%, 3%-5%, and the mass percent sum of each component is 100%；
Described structure-forming agent is G level high resistance cement or superfine cement；
Described suspension stabilizer is superfine silicon dioxide and mineral fibres 1:1；
Described water conservation adjustable solidification agent is polyacrylamide, polyvinyl alcohol, many methylcellulose 1:2:2.
2. composite chemical blocking agent according to claim 1, it is characterised in that described solidification intensifier is the one of flyash.
3. composite chemical blocking agent according to claim 2, it is characterised in that described fiber plasticity reinforcing agent is the one easily disperseing polypropylene fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110268997.5A CN102391845B (en) | 2011-09-13 | 2011-09-13 | A kind of composite chemical blocking agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110268997.5A CN102391845B (en) | 2011-09-13 | 2011-09-13 | A kind of composite chemical blocking agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102391845A CN102391845A (en) | 2012-03-28 |
| CN102391845B true CN102391845B (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110268997.5A Expired - Fee Related CN102391845B (en) | 2011-09-13 | 2011-09-13 | A kind of composite chemical blocking agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN102391845B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103965847B (en) * | 2013-01-30 | 2016-06-08 | 中国石油天然气股份有限公司 | Consolidated leakage-proof plugging 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 |
| CN103788936B (en) * | 2013-11-08 | 2016-05-04 | 东方宝麟科技发展(北京)有限公司 | A kind of high strength Oil/gas Well diverting agent, preparation and application thereof |
| 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 |
| CN105154041A (en) * | 2015-07-27 | 2015-12-16 | 中国石油集团渤海钻探工程有限公司 | Oil well cement flexibilizer |
| CN106995686B (en) * | 2016-01-25 | 2020-04-14 | 中石化石油工程技术服务有限公司 | Controllable gelling plugging agent |
| CN107663445B (en) * | 2016-07-28 | 2021-12-17 | 中国石油化工股份有限公司 | Pressure-sensitive chemical plugging agent for plugging |
| CN106479462A (en) * | 2016-08-26 | 2017-03-08 | 北京华油陆海科技有限公司 | A kind of blocking agent and preparation method thereof and oil well casing leak stopping envelope alter method |
| CN106566499B (en) * | 2016-10-11 | 2020-03-17 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Plugging slurry for improving pressure bearing capacity of leakage stratum and preparation method thereof |
| CN109650788B (en) * | 2017-10-12 | 2022-02-11 | 中石化石油工程技术服务有限公司 | Gas storage layer plugging material for drilling fluid |
| CN110093146A (en) * | 2018-01-29 | 2019-08-06 | 中国石油天然气股份有限公司 | Plugging agent and plugging agent slurry |
| CN111472715A (en) * | 2019-01-23 | 2020-07-31 | 中石化石油工程技术服务有限公司 | Hard formation open hole sidetrack drilling and filling material and application method thereof |
| CN110700785B (en) * | 2019-10-29 | 2022-01-14 | 中国石油化工股份有限公司 | Sedimentation and floating composite leaking stoppage repairing method for damaged casing |
| CN111662696A (en) * | 2020-06-03 | 2020-09-15 | 中国石油化工股份有限公司 | Plugging agent and plugging suspension for heavy oil thermal recovery and preparation method thereof |
| CN116333702B (en) * | 2023-05-23 | 2023-08-22 | 奥联图(西安)能源有限公司 | Thixotropic plugging agent and plugging method and preparation method |
| CN117586620A (en) * | 2023-12-11 | 2024-02-23 | 中国矿业大学 | Silicate modified grouting material for high-temperature mine reinforcement and preparation method and application thereof |
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| CN102391845A (en) | 2012-03-28 |
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Effective date of registration: 20150923 Address after: 062552, Hebei City, Renqiu Province West Ring Road Si Si Industrial Zone Applicant after: AOYUAN PETROLEUM TECHNOLOGY Co.,Ltd. Address before: 062552 Renqiu Huabei Petroleum communication office, Hebei, China Applicant before: Renqiu Huabei Petroleum Tongyun Petroleum Machinery Co.,Ltd. |
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