CN102311728B - Chemical pressure-reducing injection-increasing agent for injection well and preparation and use thereof - Google Patents
Chemical pressure-reducing injection-increasing agent for injection well and preparation and use thereof Download PDFInfo
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- CN102311728B CN102311728B CN201010227126.4A CN201010227126A CN102311728B CN 102311728 B CN102311728 B CN 102311728B CN 201010227126 A CN201010227126 A CN 201010227126A CN 102311728 B CN102311728 B CN 102311728B
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Abstract
The invention relates to a chemical pressure-reducing injection-increasing agent for an injection well and preparation and use thereof. The chemical pressure-reducing injection-increasing agent comprises the following components in percentage by weight: 0.03 to 0.3 percent of hexadecyl trimethyl ammonium bromide surfactant, 0.05 to 0.5 percent of MY/IMC-80BHH corrosion inhibitor, 0.1 to 0.3 percent of polyamino polyether methylene phosphonae, 0.01 to 0.03 percent of polyquaternium, 0.05 to 0.1 percent of citric acid, 0.1 to 0.5 percent of hydrochloric acid and the balance of water. The total amount of the injected water is 100 percent. The pressure-reducing injection-increasing agent is used in an amount which is 0.1 to 0.3 percent based on the weight of injected water. The pressure-reducing injection-increasing agent is added into a medicine adding device in a water injection station, uniformly mixed, pumped into a high-pressure pipe by a high-pressure pump and is injected into stratum with injected water to achieve a chemical pressure-reducing injection-increasing effect. The single-well pressure drop is about 15 percent.
Description
Technical field
The present invention relates to water injection well chemical antihypertensive injection agent and preparation and application for a kind of oil-field flooding well operations.
Background technology
In oilfield development process, injection water quality is poor, suspended particulate is many, there are sulfate reducing bacteria (SRB), iron bacteria, saprophytic bacteria etc. simultaneously, throw after people's exploitation in this class oil field, because injected water and formation water are incompatible, produce precipitation and fouling, the corrosion of aggravation system simultaneously, for bacterium provides the place of growth and breeding, bring burn into blockage problem, cause water injection pressure to rise, water-injection efficiency fast reducing, normally injection allocation, make oil extraction in oil field Speed Reduction, become a subject matter of restriction oil field long term stable production.
For above-mentioned present situation, need to study a kind of water injection well chemical antihypertensive injection agent, solve the formation blockage that is incompatible and causes due to injected water and formation water, water injection pressure rising, normally injection allocation, makes the problem of oil extraction in oil field Speed Reduction.
Summary of the invention
The object of this invention is to provide the chemical antihypertensive injection agent that a kind of water injection well is used, in injected water, add uniformly chemical antihypertensive injection agent, by the reduction of oil water interfacial tension, improve the migration velocity of water phase permeability and profit microemulsion, stop dirty formation and suppress various bacteria growth, reach the object of water injection in low-permeability oilfield well step-down augmented injection.
Raw material and the formula of chemical antihypertensive injection agent for water injection well of the present invention
1, softex kw
Molecular formula: C
16h
33(CH
3)
3nBr
Performance: have good surface-active, strong emulsibility, enters in injection allocation water and form microemulsion, forms very soon profit mixed phase emulsion after chance oil, and hydrophilic and oleophilic is balanced, and oil water interfacial tension is reduced.
2, MY/IMC-80BHH corrosion inhibiter
Main component: imidazolidine derivatives, aromatic amine derivant, alkoxyl-methyl quaternary ammonium salt, mean molecule quantity 800-3200.
Structural formula:
Wherein R ' is alkyl, R
1, R
2, R
3, R
4for aryl, cycloalkyl, X is halogen.
Performance: adsorptivity corrosion inhibiter, metal is formed to close and solid adsorption layer, there is good corrosion mitigating effect.
Production unit: Shenyang Zhong Kemingyang corrosion and protection Co., Ltd.
3, polyamino polyether base methylenephosphonic acid
Another name: polyamino polyether base medronic acid
Structural formula:
Performance: there is very high chelating dispersive property, calcium carbonate, calcium sulfate, calcium phosphate are had to excellent scale-inhibiting properties, be specially adapted to recirculating cooling water system and the oil field water treatment agent of high rigidity, high alkalinity, high pH, with compounding polycarboxylic acid better effects if.
4, polyquaternium
Performance: dark-brown is homogeneous phase transparent liquid, polyquaternium bactericide belongs to strong cation high molecular polymer, has wide spectrum, efficiently sterilization algae removal ability and certain dispersion, osmosis, and compatibility, concertedness are good.
5, citric acid (industrial goods)
Performance: citric acid is colourless translucent crystal or white particle or white crystalline powder, odorless, taste be acid extremely, soluble in water and ethanol, the aqueous solution is aobvious acid.
6, hydrochloric acid (industrial goods)
7, water
Two, each components by weight of water injection well chemical antihypertensive injection agent
Water injection well chemical antihypertensive injection agent composition of the present invention is 0.03～0.3% softex kw surfactant by weight, 0.05～0.5% MY/IMC-80BHH corrosion inhibiter, 0.1～0.3% polyamino polyether base methylenephosphonic acid, 0.01～0.03% polyquaternium, 0.05～0.1% citric acid, 0.1～0.5% hydrochloric acid, all the other are water.
Using method: the day injected water weight of take is absolutely, according to step-down injection agent consumption, be the 0.1-0.3% of water filling weight, by field technician, measure a certain amount of chemical agent, add after stirring in water-injection station chemicals dosing plant and can squeeze in pressure duct by high-pressure pump, along with injected water injects stratum, play the effect of chemical antihypertensive augmented injection.
The effect of invention
Within 2009, in oil field, 10 mouthfuls of water injection wells carry out chemical antihypertensive injection agent field conduct successively, injection pressure reduces by 15% left and right, improve water injection rate, reached low permeability oil field step-down augmented injection, prevent that dirty sample from forming, anti-bacteria simultaneously, can adjust in time formula components ratio according to on-the-spot water injection well actual conditions, easy to operate.
The specific embodiment
Embodiment 1:
In a capacity is the steel reactor of 1000 liters, add quantitative water, adding weight content is 0.03% softex kw, stirs, the MY/IMC-80BHH corrosion inhibiter that adds weight content 0.05%, stirring and dissolving is complete, and adding weight content is 0.02% polyamino polyether base methylenephosphonic acid, and stirring and dissolving is complete, adding successively weight content is 0.01 polyquaternium again, 0.05% citric acid, 0.1% hydrochloric acid, surplus is water, stir, obtain this product.
Using method and effect: Wu Banner water-injection station, at water-injection station distributing room for water injection, with dosing pump, in this station well injected water volume 0.1% ratio, chemical antihypertensive injection agent is pumped in pressure duct, along with injected water injects stratum, individual well water injection pressure 5.8MPa before measure, individual well water injection pressure 4.9MPa after measure, front and back contrast individual well pressure drop 15.5%.
Embodiment 2:
In a capacity is the steel reactor of 1000 liters, add quantitative water, adding weight content is 0.3% softex kw, stirs, the MY/IMC-80BHH corrosion inhibiter that adds weight content 0.1%, stirring and dissolving is complete, and adding weight content is 0.01% polyamino polyether base methylenephosphonic acid, and stirring and dissolving is complete, adding successively weight content is 0.03% polyquaternium again, 0.05% citric acid, 0.3% hydrochloric acid, surplus is water, stir, obtain this product.
Using method and effect: Xinhua's one metaideophone water station, at water-injection station distributing room for water injection, with dosing pump, in this station well injected water volume 0.3% ratio, chemical antihypertensive injection agent is pumped in pressure duct, along with injected water injects stratum, individual well water injection pressure 23.0MPa before measure, individual well water injection pressure 19.5MPa after measure, front and back contrast individual well pressure drop 15.2%.
Embodiment 3:
In a capacity is the steel reactor of 1000 liters, add quantitative water, adding weight content is 0.2% softex kw, stirs, the MY/IMC-80BHH corrosion inhibiter that adds weight content 0.2%, stirring and dissolving is complete, and adding weight content is 0.2% polyamino polyether base methylenephosphonic acid, and stirring and dissolving is complete, adding successively weight content is 0.02% polyquaternium again, 0.03% citric acid, 0.3% hydrochloric acid, surplus is water, stir, obtain this product.
Using method and effect: king's kiln water-injection station, at water-injection station distributing room for water injection, with dosing pump, in this station well injected water volume 0.2% ratio, chemical antihypertensive injection agent is pumped in pressure duct, along with injected water injects stratum, individual well water injection pressure 18.6MPa before measure, individual well water injection pressure 15.8MPa after measure, front and back contrast individual well pressure drop 15.1%.
Embodiment 4:
In a capacity is the steel reactor of 1000 liters, add quantitative water, adding weight content is 0.1% softex kw, stirs, the MY/IMC-80BHH corrosion inhibiter that adds weight content 0.2%, stirring and dissolving is complete, and adding weight content is 0.05% polyamino polyether base methylenephosphonic acid, and stirring and dissolving is complete, adding successively weight content is 0.02 polyquaternium again, 0.03% citric acid, 0.3% hydrochloric acid, surplus is water, stir, obtain this product.
Using method and effect: king's kiln note clear water station, at water-injection station distributing room for water injection, with dosing pump, in this station well injected water volume 0.1% ratio, chemical antihypertensive injection agent is pumped in pressure duct, along with injected water injects stratum, individual well water injection pressure 8.6MPa before measure, individual well water injection pressure 7.2MPa after measure, front and back contrast individual well pressure drop 16.3%.
Claims (3)
1. a water injection well chemical antihypertensive injection agent, it is characterized in that: composition is 0.03～0.3% softex kw surfactant by weight, 0.05～0.5% MY/IMC-80BHH corrosion inhibiter, 0.1～0.3% polyamino polyether base methylenephosphonic acid, 0.01～0.03% polyquaternium, 0.05～0.1% citric acid, 0.1～0.5% hydrochloric acid, all the other are water.
2. the preparation method of a water injection well chemical antihypertensive injection agent according to claim 1, it is characterized in that: in a capacity is the steel reactor of 1000 liters, add quantitative water, adding weight content is 0.03～0.3% softex kw, stir, the MY/IMC-80BHH corrosion inhibiter that adds weight content 0.05～0.5%, stirring and dissolving is complete, adding weight content is 0.1～0.3% polyamino polyether base methylenephosphonic acid, stirring and dissolving is complete, adding successively weight content is 0.01～0.03% polyquaternium again, 0.05～0.1% citric acid, 0.1～0.5% hydrochloric acid, surplus is water, stir, obtain this product.
3. the application of a water injection well chemical antihypertensive injection agent according to claim 1, it is characterized in that: take injected water weight as a hundred per cent, step-down injection agent consumption is the 0.1-0.3% of water filling weight, after adding and stirring in water-injection station chemicals dosing plant, by high-pressure pump, squeeze in pressure duct, along with injected water injects stratum, play the effect of chemical antihypertensive augmented injection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010227126.4A CN102311728B (en) | 2010-07-06 | 2010-07-06 | Chemical pressure-reducing injection-increasing agent for injection well and preparation and use thereof |
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| CN201010227126.4A CN102311728B (en) | 2010-07-06 | 2010-07-06 | Chemical pressure-reducing injection-increasing agent for injection well and preparation and use thereof |
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| CN102311728B true CN102311728B (en) | 2014-04-02 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215027B (en) * | 2012-01-18 | 2015-09-23 | 中国石油天然气股份有限公司 | A kind of Acidic surfactant fracture liquid system |
| CN105754567B (en) * | 2014-12-17 | 2018-08-14 | 中国石油天然气股份有限公司 | A kind of water injection well scale remover and its preparation method and application |
| FR3031521A1 (en) | 2015-01-08 | 2016-07-15 | Ceca Sa | ADDITIVE FOR INJECTIVITY |
| FR3031520A1 (en) | 2015-01-08 | 2016-07-15 | Ceca Sa | ADDITIVE FOR INJECTIVITY |
| CN106609135A (en) * | 2015-10-26 | 2017-05-03 | 中国石油化工股份有限公司 | Salt-resistant nano-emulsion injection enhancement agent for oilfield water injection and preparation method thereof |
| CN106281288B (en) * | 2016-08-04 | 2019-06-07 | 陕西森瑞石油技术开发有限公司 | A kind of low permeability reservoir pressure reducing and injection increasing agent used for flooding well and preparation method thereof |
| CN107892908A (en) * | 2017-11-23 | 2018-04-10 | 克拉玛依新科澳石油天然气技术股份有限公司 | Water injection well unblocking and injection increasing agent and preparation method thereof |
| CN110700804B (en) * | 2019-10-09 | 2022-01-04 | 中国石油天然气股份有限公司 | Method for adding antihypertensive and augmented injection medicament |
| CN114479804A (en) * | 2020-11-11 | 2022-05-13 | 中国石油天然气股份有限公司 | Blocking remover and preparation method and application thereof |
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| US20070049501A1 (en) * | 2005-09-01 | 2007-03-01 | Halliburton Energy Services, Inc. | Fluid-loss control pills comprising breakers that comprise orthoesters and/or poly(orthoesters) and methods of use |
| CN101538457B (en) * | 2009-04-30 | 2011-08-03 | 中国石油天然气股份有限公司 | Input well composite blockage relieving agent and preparation method thereof |
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