CN102899011A - Low-permeability reservoir water-lock releasing agent and preparation method thereof - Google Patents
Low-permeability reservoir water-lock releasing agent and preparation method thereof Download PDFInfo
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- CN102899011A CN102899011A CN2012104606789A CN201210460678A CN102899011A CN 102899011 A CN102899011 A CN 102899011A CN 2012104606789 A CN2012104606789 A CN 2012104606789A CN 201210460678 A CN201210460678 A CN 201210460678A CN 102899011 A CN102899011 A CN 102899011A
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Abstract
The invention discloses an oil field chemical agent used in petroleum gas oil-pumping operation construction, and particularly relates to a low-permeability reservoir water-lock releasing agent used in working fluid and a preparation method thereof. The low-permeability reservoir water-lock releasing agent consists of the following components in percentage by weight: 1 to 15 percent of glycol ether, 15 to 45 percent of didodecyl dicarboxylic sodium, 15 to 30 percent of ethylene glycol silicon ether and 30 to 60 percent of water. The preparation method comprises the following steps of: adding 30 to 60 percent of water into an enamel reaction kettle, starting a stirrer, and heating to raise the temperature to be between 30 and 40 DEG C; adding 1 to 15 percent of glycol ether and 15 to 45 percent of didodecyl dicarboxylic sodium into the reaction kettle, controlling the temperature and stirring for 1 hour; and adding 15 to 30 percent of ethylene glycol silicon ether into the reaction kettle, controlling the temperature to be between 40 and 80 DEG C, and reacting for 1 to 2 hours to obtain the water-lock releasing agent. The water-lock releasing agent is strong in surface activity and low in use level, can well maintain the permeability of a low-permeability reservoir and release water-lock damages, and is used in the working fluid such as fracturing fluid, perforating fluid, well control fluid and the like.
Description
Invention field
The present invention relates to employed Oilfield Chemicals in a kind of oil and gas oil producing operation construction, particularly a kind of low-permeability oil deposit Xie Shui lock agent and preparation method thereof is mainly used in the working fluids such as fracturing liquid, perforating fluid and well control fluid.
Background technology
Low-permeability oil deposit generally has the characteristics such as capillary pressure is high, water sensitivity is strong and pore throat is tiny, poor permeability, serious heterogeneity.In the oil production process, working fluid is easy to occur the water capillary imbibition, causes a large amount of working fluids to enter oil reservoir.The poor permeability of low-permeability oil deposit, the working fluid that causes invading oil reservoir returns row's difficulty, even can not the row of returning, and forms water blocking damage.Studies show that both at home and abroad, water blocking damage is main, the most serious type of injury of low-permeability oil deposit, and damaging factor is generally 70%～90%, in case come to harm, the oil reservoir perviousness is recovered relatively difficulty, and long-term effect single well productivity, oil reservoir production efficiency increase cost of development.
The earliest, the main natural gas pool aspect of concentrating of the water blocking damage research that people carry out, in recent years along with development of low-permeability oil reservoir, people have strengthened the research to oil reservoir water blocking damage mechanism, extent of injury prediction aspect.Think such as D.B.Bennion etc., liquid phase is assembled in hydrocarbon-bearing pool and is detained is the principal element of water blocking damage, and rate of permeation is lower, affects more serious; Li Shubai is studied with the Forecasting Methodology of multivariate analysis in regressive to liquid phase trap infringement, has set up the functional relation between liquid phase trap harmful penetrance recovery value and reservoir permeability and the porosity.
Along with the progressively intensification of people to water blocking damage understanding, to strengthen understanding dewatering and lock the development of injury chemical agent, portioned product has carried out rig-site utilization, and effect is comparatively remarkable.The disclosed patent WO of U.S. CONOCOPHILLIPS CO, 2004096940[P] be a kind of water lock agent for releasing of hydrocarbon-containifirst tensio-active agent; The disclosed patent MX of U.S. UNIV TEXAS, 2009010142[P] relate to a kind of oil well Xie Shui lock agent and process the method for hydrocarbonaceous petroclastic rock.The people such as Xue Yuzhi develop sulfonated petro-leum, rhamnolipid and yellow soda ash compound system [" Drilling and completion fluids " 2009, Vol.26 No.6], perviousness that can Effective Raise Pinghu Oil and Gas Field low permeability reservoir; Ma Hongxing develops PWA water blocking damage treating agent [" oil-gas geology and recovery ratio " 2005, Vol.26 No.4] for the chengdao oilfield low pressure well, and well the lock effect that dewaters is conciliate in prevention.
Rig-site utilization shows, the Xie Shui lock agent of single type is difficult to take into account the factors such as geology, reservoir condition and construction technology of low-permeability oil deposit, removes the water blocking damage effect undesirable, is of limited application.Therefore, research and development become trend by the Xie Shui lock agent that two or more surfactant compound forms, and to improve the immunity from interference of Xie Shui lock agent, enlarge its range of application.
Summary of the invention
The present invention is difficult to take into account the factors such as geology, reservoir condition and construction technology of low-permeability oil deposit for the Xie Shui lock agent that solves single type, remove the water blocking damage effect undesirable, the technical problem such as be of limited application, it is strong that the present invention one provides a kind of surfactivity, make working fluid return row easily, the infiltrative low-permeability oil deposit Xie Shui lock agent of oil reservoir is kept in the lock injury that can efficient solution dewaters; Two provide the preparation method of a kind of low-permeability oil deposit Xie Shui lock agent.
Solve the problems of the technologies described above by the following technical solutions: the agent of a kind of low-permeability oil deposit Xie Shui lock, it is characterized in that: the agent of described low-permeability oil deposit Xie Shui lock comprises glycol ether, two dodecyl Sodium Dicarboxylic Acid, ethylene glycol silicon ether and water with raw material, by mass percentage, glycol ether 1～15%, two dodecyl Sodium Dicarboxylic Acids 15～45%, 1 ethylene glycol silicon ether 5～30%, water 30～60%.
As priority scheme, described glycol ether is a kind of of ethylene glycol monobutyl ether, butyl glycol ether, Diethylene Glycol butyl ether, diethylene glycol ether, Polyethylene glycol dimethyl ether.
As priority scheme, the described pair of dodecyl Sodium Dicarboxylic Acid is a kind of of NN ˊ-dodecyl-quadrol base dipropionic acid, NN ˊ-dodecyl-quadrol base sodium diacelate, NN ˊ-dodecyl-butanediamine base dipropionic acid, NN ˊ-dodecyl-butanediamine base sodium diacelate.
As priority scheme, described ethylene glycol silicon ether is a kind of of ethylene glycol trimethylsilyl ethers, ethylene glycol triethyl silicon ether, polyoxyethylene glycol trimethylsilyl ethers, polyoxyethylene glycol triethyl silicon ether.
A kind of method for preparing the agent of low-permeability oil deposit Xie Shui lock, the device that described method is used comprises the reactor stirrer, it is characterized in that, its preparation method comprises subordinate's step: the mass percent meter, in enamel reaction still, add 30～60% water, start stirrer, water is heated to 30～40 ℃; Then in reactor, add 1～15% glycol ether, 15～45% pairs of dodecyl Sodium Dicarboxylic Acids, temperature control stirring 1h; And then add 15～30% ethylene glycol silicon ethers, and the control temperature is at 40～80 ℃, and reaction 1～2h obtains Xie Shui lock agent finished product.
As priority scheme, described reactor is enamel reaction still.
As priority scheme, described water is distilled water.
As priority scheme, described stirrer is the magnetic stirrer with electric mantle.
Adopt technique scheme, compared with prior art, low-permeability oil deposit Xie Shui lock provided by the invention agent mainly contains three kinds of active ingredients: two dodecyl Sodium Dicarboxylic Acids, ethylene glycol silicon ether, glycol ether.Two dodecyl Sodium Dicarboxylic Acids are a kind of Gemini surface active agent (Gemini Surfactants), have high surfactivity, and water-soluble better.Ethylene glycol silicon ether is a kind of organic silicon ether type tensio-active agent, has good synergistic effect with two dodecyl Sodium Dicarboxylic Acids.Glycol ether is Xie Shui lock agent active ingredient, can improve again the water-soluble of two dodecyl Sodium Dicarboxylic Acids, reduces the cloud point of Xie Shui lock agent.A kind of low-permeability oil deposit Xie Shui lock agent surfactivity that the present invention relates to is strong, makes working fluid return row easily, and the perviousness of oil reservoir is kept in the lock injury that can efficient solution dewaters.Its significant effect is: preparation method's science of the present invention, the product surface that obtains is active by force, consumption is few, strong adaptability, applied range.Can be used for the many kinds of measures operation in the natural petroleum gas field process, in the working fluids such as fracturing liquid, perforating fluid, well control fluid.
Embodiment
The present invention will be further described below in conjunction with specific embodiment.
Embodiment 1
The present embodiment discloses a kind of low-permeability oil deposit Xie Shui lock agent and preparation method thereof, this low-permeability oil deposit Xie Shui locks agent by mass: by 50 g butyl glycol ethers, 90gNN ˊ – Shi Er Wan Ji – quadrol base dipropionic acid, 70g ethylene glycol triethyl silicon ether, 160g distilled water forms.Concrete preparation method is:
In the four-hole 500ml flask with reflux condensing tube, thermometer, dropping funnel, add 160g distilled water, put into the stirring magneton, flask is put on the magnetic stirrer with electric mantle, open magnetic stirrer, open heater switch, temperature is controlled at 30～40 ℃, opens the water coolant of reflux condensing tube; Add 50 g butyl glycol ethers, add again 90gNN ˊ – Shi Er Wan Ji – quadrol base dipropionic acid, reaction 1h.Add 70g ethylene glycol triethyl silicon ether, the control temperature is at 70～80 ℃, and reaction 1～2h obtains a kind of low-permeability oil deposit and locks agent with Xie Shui.
Embodiment 2
The present embodiment discloses a kind of low-permeability oil deposit Xie Shui lock agent and preparation method thereof, the agent of this low-permeability oil deposit Xie Shui lock is by adding 50 g methoxypolyethylene glycols by mass, 115g NN ˊ – Shi Er Wan Ji – quadrol base sodium diacelate, 56g ethylene glycol trimethylsilyl ethers, 140g distilled water forms.Concrete preparation method is:
In the four-hole 500ml flask with reflux condensing tube, thermometer, dropping funnel, add 140g distilled water, put into the stirring magneton, flask is put on the magnetic stirrer with electric mantle, open magnetic stirrer, open heater switch, temperature is controlled at 30～40 ℃, opens the water coolant of reflux condensing tube; Add 50 g methoxypolyethylene glycols, add again 115g NN ˊ – Shi Er Wan Ji – quadrol base sodium diacelate, reaction 1h.Add 56g ethylene glycol trimethylsilyl ethers, the control temperature is at 65～75 ℃, and reaction 1～2h obtains a kind of low-permeability oil deposit and locks agent with Xie Shui.
Embodiment 3
The present embodiment discloses a kind of low-permeability oil deposit Xie Shui lock agent and preparation method thereof, the agent of this low-permeability oil deposit Xie Shui lock is by 35 g diethylene glycol ethers by mass, 80g NN ˊ – Shi Er Wan Ji – quadrol base dipropionic acid, 75g polyoxyethylene glycol trimethylsilyl ethers, 150g distilled water forms.Concrete preparation method is:
In the four-hole 500ml flask with reflux condensing tube, thermometer, dropping funnel, add 150g distilled water, put into the stirring magneton, flask is put on the magnetic stirrer with electric mantle, open magnetic stirrer, open heater switch, temperature is controlled at 30～40 ℃, opens the water coolant of reflux condensing tube; Add 35 g diethylene glycol ethers, add again 80g NN ˊ – Shi Er Wan Ji – quadrol base dipropionic acid, reaction 1h.Add 75g polyoxyethylene glycol trimethylsilyl ethers, the control temperature is at 65～75 ℃, and reaction 1～2h obtains a kind of low-permeability oil deposit and locks agent with Xie Shui.
Embodiment 4
The present embodiment discloses a kind of low-permeability oil deposit Xie Shui lock agent and preparation method thereof, the agent of this low-permeability oil deposit Xie Shui lock is by 55 g ethylene glycol monobutyl ethers by mass, 95g NN ˊ – Shi Er Wan Ji – quadrol base sodium diacelate, 75g ethylene glycol trimethylsilyl ethers, 150g distilled water forms, and concrete preparation method is:
By mass: in the four-hole 500ml flask with reflux condensing tube, thermometer, dropping funnel, add 150g distilled water, put into the stirring magneton, flask is put on the magnetic stirrer with electric mantle, open magnetic stirrer, open heater switch, temperature is controlled at 30～40 ℃, opens the water coolant of reflux condensing tube; Add 55 g ethylene glycol monobutyl ethers, add again 95g NN ˊ – Shi Er Wan Ji – quadrol base sodium diacelate, reaction 1～2h.Add 75g ethylene glycol trimethylsilyl ethers, the control temperature is at 65～75 ℃, and reaction 1～2h obtains a kind of low-permeability oil deposit and locks agent with Xie Shui.
Above disclosed only be specific embodiments of the invention; although the present invention discloses as above with preferred embodiment; but the present invention is not limited thereto; the changes that any person skilled in the art can think of; within not breaking away from design philosophy of the present invention and scope; the present invention is carried out various changes and retouching, all should drop within protection scope of the present invention.
Claims (8)
1. low-permeability oil deposit Xie Shui lock agent, it is characterized in that: the agent of described low-permeability oil deposit Xie Shui lock comprises glycol ether, two dodecyl Sodium Dicarboxylic Acid, ethylene glycol silicon ether and water with raw material, by mass percentage, glycol ether 1～15%, two dodecyl Sodium Dicarboxylic Acids 15～45%, 1 ethylene glycol silicon ether 5～30%, water 30～60%.
2. low-permeability oil deposit Xie Shui according to claim 1 lock agent is characterized in that: described glycol ether is a kind of of ethylene glycol monobutyl ether, butyl glycol ether, Diethylene Glycol butyl ether, diethylene glycol ether, Polyethylene glycol dimethyl ether.
3. a kind of low-permeability oil deposit Xie Shui lock according to claim 1 agent is characterized in that: the described pair of dodecyl Sodium Dicarboxylic Acid is a kind of of NN ˊ-dodecyl-quadrol base dipropionic acid, NN ˊ-dodecyl-quadrol base sodium diacelate, NN ˊ-dodecyl-butanediamine base dipropionic acid, NN ˊ-dodecyl-butanediamine base sodium diacelate.
4. a kind of low-permeability oil deposit Xie Shui lock according to claim 1 and 2 agent is characterized in that: described ethylene glycol silicon ether is a kind of of ethylene glycol trimethylsilyl ethers, ethylene glycol triethyl silicon ether, polyoxyethylene glycol trimethylsilyl ethers, polyoxyethylene glycol triethyl silicon ether.
5. one kind prepares the method that low-permeability oil deposit Xie Shui locks agent, the device that described method is used comprises the reactor stirrer, it is characterized in that, its preparation method comprises subordinate's step: the mass percent meter, in enamel reaction still, add 30～60% water, start stirrer, water is heated to 30～40 ℃; Then in reactor, add 1～15% glycol ether, 15～45% pairs of dodecyl Sodium Dicarboxylic Acids, temperature control stirring 1h; And then add 15～30% ethylene glycol silicon ethers, and the control temperature is at 40～80 ℃, and reaction 1～2h obtains Xie Shui lock agent finished product.
6. the method for preparing the agent of low-permeability oil deposit Xie Shui lock according to claim 5 is characterized in that, described reactor is enamel reaction still.
7. the method for preparing the agent of low-permeability oil deposit Xie Shui lock according to claim 5 is characterized in that, described water is distilled water.
8. the method for preparing the agent of low-permeability oil deposit Xie Shui lock according to claim 5 is characterized in that, described stirrer is the magnetic stirrer with electric mantle.
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| CN201210460678.9A CN102899011B (en) | 2012-11-16 | 2012-11-16 | Low-permeability reservoir water-lock releasing agent and preparation method thereof |
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| CN201210460678.9A CN102899011B (en) | 2012-11-16 | 2012-11-16 | Low-permeability reservoir water-lock releasing agent and preparation method thereof |
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| CN105214557A (en) * | 2015-10-28 | 2016-01-06 | 北京工商大学 | A kind of N-alkyl aminopropionic acid type Gemini surface active agent and method for making |
| CN107986981A (en) * | 2017-11-23 | 2018-05-04 | 中国石油大学(华东) | A kind of double type air humidity reversion immunomodulator compounds and preparation method and application |
| CN108485616A (en) * | 2018-03-26 | 2018-09-04 | 中国石油天然气集团有限公司 | A kind of drilling fluid environment-friendly type organosilicon Waterproof lock agent and its preparation method and application |
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| CN110669486A (en) * | 2019-10-10 | 2020-01-10 | 北京大德广源石油技术服务有限公司 | Enhanced gas production material for comprehensive treatment of gas well and preparation method thereof |
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Cited By (10)
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| CN104449631A (en) * | 2014-11-25 | 2015-03-25 | 中国石油大学(华东) | Strong gas-wetting nanosilicon dioxide water block removal agent, preparation method thereof and method for wetting transition of rock surface |
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| CN105214557A (en) * | 2015-10-28 | 2016-01-06 | 北京工商大学 | A kind of N-alkyl aminopropionic acid type Gemini surface active agent and method for making |
| CN107986981A (en) * | 2017-11-23 | 2018-05-04 | 中国石油大学(华东) | A kind of double type air humidity reversion immunomodulator compounds and preparation method and application |
| CN107986981B (en) * | 2017-11-23 | 2020-02-18 | 中国石油大学(华东) | Gemini gas-wet reversal agent compound and preparation method and application thereof |
| CN108485616A (en) * | 2018-03-26 | 2018-09-04 | 中国石油天然气集团有限公司 | A kind of drilling fluid environment-friendly type organosilicon Waterproof lock agent and its preparation method and application |
| CN109181669A (en) * | 2018-10-18 | 2019-01-11 | 陕西新奥石油工程有限公司 | A kind of mating medicament and technique releasing reservoir water lock, blocking |
| CN111978933A (en) * | 2019-05-21 | 2020-11-24 | 中石化南京化工研究院有限公司 | Waterproof lock composition for oil field and application thereof |
| CN111978933B (en) * | 2019-05-21 | 2022-09-09 | 中石化南京化工研究院有限公司 | Waterproof lock composition for oil field and application thereof |
| CN110669486A (en) * | 2019-10-10 | 2020-01-10 | 北京大德广源石油技术服务有限公司 | Enhanced gas production material for comprehensive treatment of gas well and preparation method thereof |
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Effective date of registration: 20200929 Address after: 063500 Hebei province Tangshan City Luannan County noble Fort Patentee after: TANGSHAN JIYOU RUIFENG CHEMICAL Co.,Ltd. Patentee after: PetroChina Co.,Ltd. Address before: 063500 Hebei province Tangshan City Luannan County noble Fort Patentee before: TANGSHAN JIYOU RUIFENG CHEMICAL Co.,Ltd. |
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