CN102618250A - Preparation method of environmental-friendly demulsify-cleanup additive for fracture acidizing - Google Patents
Preparation method of environmental-friendly demulsify-cleanup additive for fracture acidizing Download PDFInfo
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- CN102618250A CN102618250A CN2012100531533A CN201210053153A CN102618250A CN 102618250 A CN102618250 A CN 102618250A CN 2012100531533 A CN2012100531533 A CN 2012100531533A CN 201210053153 A CN201210053153 A CN 201210053153A CN 102618250 A CN102618250 A CN 102618250A
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Abstract
The invention provides a preparation method of an environmental-friendly demulsify-cleanup additive for fracture acidizing and is characterized in that the environmental-friendly demulsify-cleanup additive for fracture acidizing is prepared according to the following proportion in parts by weight (the unit is gram): 100 parts of environmental-friendly demulsify-cleanup additive for fracture acidizing comprise 20-25 parts of biological de-emulsifier SWP, 10-15 parts of alkyl polyglucosides, 20-30 parts of low-molecular alcohol and residual amount water. The environmental-friendly demulsify-cleanup additive for fracture acidizing belongs to pure green degradable substance, has no pollution to the environment, has the surface tension of 27.17 mN/m and the interfacial tension of 0.6640 mN/m and has better cleanup performance; the demulsification rate of the demulsify-cleanup additive is more than 90%, oil water emulsion can be radically demulsified and separated, and meanwhile, the demulsify-cleanup additive is multipurpose and can be conveniently added on site.
Description
Technical field
The present invention relates to the oil-gas field fracturing technology field, is the preparation method of environment-friendly type fracture acidizing with the breakdown of emulsion cleanup additive.
Background technology
For low pressure, LOW PERMEABILITY RESERVOIR, fracturing reform be bring in a well, the major measure of old well production potential tapping raising the output.The fracturing liquid of poor performance is prone to reservoir is caused reservoir damages such as water-sensitive, water lock, emulsification obstruction, reservoir permeability is reduced, and then influence correctional effect.The emulsion splitter and the cleanup additive that add better performances in the fracturing liquid can prevent that fracturing liquid from causing water blocking damage and emulsification to stop up to reservoir, improves the reservoir reconstruction effect.The staple of breakdown of emulsion cleanup additive is a tensio-active agent; Because tensio-active agent has wetting action to the stratum; Sandstone surface is generally electronegative, and cationic tensio-active agent is prone to make rock generation wettability reversal to stop the smooth outflow of crude oil, simultaneously; People are also increasingly high to environmental protection requirement, and the additive of chemical classes is prone to environment is polluted.This patent is introduced a kind of biodegradable environment-friendly type breakdown of emulsion cleanup additive of mainly being made up of negatively charged ion and nonionogenic tenside; This breakdown of emulsion cleanup additive can not produce absorption to the stratum; The breakdown of emulsion ability is strong; Breaking glue solution surface and interface tension force is low, and is biodegradable environmentally friendly, can not pollute environment.
One Chinese patent application 91107226 discloses " acidifying and fracturing technology cleanup additive ", and it is made up of fluorine-containing carboxamido-group cation quaternary ammonium salt and non-ionic type silane and methyl alcohol or terepthaloyl moietie, can obviously reduce the fracturing working fluid surface tension.It is said this invention good product performance, consumption accounts for greatly between the 1%--0.5% of fracturing liquid weight, belongs to chemical type, can pollute environment, is prone on sandstone, produce absorption.
One Chinese patent application numbers 201010251665.1 discloses " a kind of novel breakdown of emulsion cleanup additive "; Its prescription consists of: permeate agent, agricultural chemicals wetting agent, pressure break breakdown of emulsion cleanup additive, fluorocarbon surfactant, sodium formiate, methyl alcohol, water; The moity more complicated; Preparation needs to stir 60 minutes, and the preparation time is oversize, and the concrete performance index of this product and the technical superiority of comparing with other products are not described.Product category is many, belongs to the product of chemical type, is prone to environment is polluted.
Summary of the invention
The purpose of this invention is to provide a kind of environment-friendly type fracture acidizing with breakdown of emulsion cleanup additive and its preparation method, raising fracture acidizing liquid returns row and leads, low injury and degradable.
Technical scheme of the present invention is the preparation method of environment-friendly type fracture acidizing with the breakdown of emulsion cleanup additive, it is characterized in that: this environment-friendly type fracture acidizing is configured according to following ratio with the breakdown of emulsion cleanup additive:
100 parts environment-friendly type fracture acidizing with the breakdown of emulsion cleanup additive by biological demulsifying agent SWP20-25 part, alkyl polyglycoside 10-15 part, low mass molecule alcohol 20-30 part, surplus is a water.
The environment-friendly type fracture acidizing is characterized in that with the preparation method of breakdown of emulsion cleanup additive: this environment-friendly type fracture acidizing is configured according to following step with the breakdown of emulsion cleanup additive:
Step 1 is got the low mass molecule alcohol that 10 to 15 parts alkyl polyglycoside adds 20 to 30 parts, at room temperature stir, and dissolving evenly obtains mixing liquid 1;
Step 2, the mixing liquid 1 that step 1 is obtained adds 20 to 25 parts biological demulsifying agent SWP, and stirs, and obtains mixing liquid 2;
Step 3, the mixing liquid 2 that step 2 is obtained adds entry, and making its gross weight is 100 parts, at room temperature stirs, and obtains the environment-friendly type fracture acidizing and uses the breakdown of emulsion cleanup additive.
Described low mass molecule alcohol is any one in methyl alcohol, ethanol or the Virahol.
Carbon number in the described alkyl polyglycoside is between 12 to 14, and alkyl polyglycoside is by the pure and mild glucose synthetic of renewable resources natural fat, is the more comprehensive new non-ionic surfactants of a kind of performance.
Described biological demulsifying agent SWP is the fermented product that utilizes different carbon sources to generate by Pseudomonas aeruginosa.
The environment-friendly type fracture acidizing uses mass percent that the breakdown of emulsion cleanup additive accounts for the fracturing liquid consumption by it directly to add in fracturing liquid or the acidizing fluid as the dosage of 0.2%-0.5% and uses.
This breakdown of emulsion cleanup additive laboratory experiment test result, 0.3% mass percent concentration surface tension 27.17mN/m, IT 0.6640 mN/m, with the crude oil demulsification rate more than 90%.
Characteristics of the present invention are: 1, this breakdown of emulsion cleanup additive belongs to pure degradable green material, environmentally safe; 2, surface tension 27.17mN/m, IT 0.6640 mN/m, the row's of helping better performances; 3, this breakdown of emulsion cleanup additive demulsification efficiency can make the thorough breakdown of emulsion of water-oil emulsion separate more than 90%; 4, the many usefulness of potion, the on-the-spot adding conveniently.
Embodiment
To combine embodiment that the present invention is further described below.
The environment-friendly type fracture acidizing is characterized in that with the preparation method of breakdown of emulsion cleanup additive: this environment-friendly type fracture acidizing is configured according to following ratio with the breakdown of emulsion cleanup additive:
100 parts environment-friendly type fracture acidizing with the breakdown of emulsion cleanup additive by biological demulsifying agent SWP20-25 part, alkyl polyglycoside 10-15 part, low mass molecule alcohol 20-30 part, surplus is a water.(ratio of said components is weight part)
The environment-friendly type fracture acidizing is characterized in that with the preparation method of breakdown of emulsion cleanup additive: this environment-friendly type fracture acidizing is configured according to following step with the breakdown of emulsion cleanup additive:
Step 1) is got the low mass molecule alcohol that 10 to 15 parts alkyl polyglycoside adds 20 to 30 parts, at room temperature stir, and dissolving evenly obtains mixing liquid 1;
Step 2), the mixing liquid 1 that step 1) is obtained adds 20 to 25 parts biological demulsifying agent SWP, and stirs, and obtains mixing liquid 2;
Step 3) is with step 2) mixing liquid 2 that obtains adds entry, and making its gross weight is 100 parts, at room temperature stirs, and obtains the environment-friendly type fracture acidizing and uses the breakdown of emulsion cleanup additive.
Embodiment 1
Biological demulsifying agent SWP all can not constitute harm by the fermented product that Pseudomonas aeruginosa utilizes different carbon sources to generate to mikrobe, animal and human's class, and this product is provided by Huzhou Zijin bio tech ltd production.
Alkyl polyglycoside is the commercially available prod of carbon number between 12-14.This product is by the pure and mild glucose synthetic of renewable resources natural fat; It is the more comprehensive new non-ionic surfactants of a kind of performance; Have the characteristic of common nonionic and AS concurrently; Having high surface, good ecological security and intermiscibility, is internationally recognized first-selection " green " functional surface promoting agent.
The alkyl polyglycoside of getting 10 grams is dissolved in the ethanol of 20 grams, at room temperature stir, and dissolving evenly; Add 20g biological demulsifying agent SWP then, and stir; The water that adds 50 grams at last stirs and promptly processes the biodegradable environment-friendly type breakdown of emulsion cleanup additive of 100g.
Embodiment 2
Present embodiment and embodiment 1 layoutprocedure are basic identical, and different is to get the 15g alkyl polyglycoside, are dissolved in the 30g ethanol; Stir; Add 25g biological demulsifying agent SWP then, stir, the water that adds 30g at last stirs and promptly processes the biodegradable environment-friendly type breakdown of emulsion cleanup additive of 100g.
Embodiment 3
Present embodiment and embodiment 1 layoutprocedure are basic identical, and different is to get the 12g alkyl polyglycoside, are dissolved in the 28g ethanol; Stir; Add 23g biological demulsifying agent SWP then, stir, the water that adds 37g at last stirs and promptly processes the biodegradable environment-friendly type breakdown of emulsion cleanup additive of 100g.
Embodiment 4
Test pit 1 is to prolong a bite prospect pit of oil recovery factory, Westbound, oil field, is positioned at Liu Wan village, Zhidan County dawn eight town, intends through the fracturing reform formation testing and understands this block oil-containing situation.This well fractured layer position is long by 9, fractured well section 1987.0-1994.0m and 2004.0-2009.0m.Fracturing liquid is with guanidine glue base fracturing liquid, adds in the fracturing liquid that to account for fracturing liquid consumption mass percent be 0.3% breakdown of emulsion cleanup additive of the present invention, and the row of returning leads highly after the pressure, reaches 88.86%, and oil increasing effect is good.Test effect such as table 1, table 2.
The row of returning led after table 1 test pit was pressed
Table 2 test pit fracturing effect
Embodiment 5
Test pit 2 is to prolong a bite prospect pit of oil recovery factory, Wuqi County, oil field, is positioned at Wu Cang Bao township, Wuqi County, intends through the fracturing reform formation testing and understands this block oil-containing situation, hopes to find new oil-containing block.This well fractured well section 2090.4-2104.4m.The fracturing liquid that fracturing liquid uses is water base guanidine gum fracturing fluid, adds to account for the breakdown of emulsion cleanup additive that fracturing liquid consumption mass percent is this invention of 0.5%, compares with contrasting well after the pressure break, and the row of returning leads high, presses the back oil increasing effect obvious.Test effect such as table 3, table 4.
The row of returning led after table 3 test pit was pressed
Table 4 test pit formation testing output and offset wells correlation
Claims (6)
1. the environment-friendly type fracture acidizing is characterized in that with the preparation method of breakdown of emulsion cleanup additive: this environment-friendly type fracture acidizing is configured according to following ratio with the breakdown of emulsion cleanup additive:
100 parts environment-friendly type fracture acidizing with the breakdown of emulsion cleanup additive by biological demulsifying SWP20-25 part, alkyl polyglycoside 10-15 part, low mass molecule alcohol 20-30 part, surplus is a water.
2. the environment-friendly type fracture acidizing is characterized in that with the preparation method of breakdown of emulsion cleanup additive: this environment-friendly type fracture acidizing is configured according to following step with the breakdown of emulsion cleanup additive:
Step 1 is got the low mass molecule alcohol that 10 to 15 parts alkyl polyglycoside adds 20 to 30 parts, at room temperature stir, and dissolving evenly obtains mixing liquid 1;
Step 2, the mixing liquid 1 that step 1 is obtained adds 20 to 25 parts biological demulsifying agent SWP, and stirs, and obtains mixing liquid 2;
Step 3, the mixing liquid 2 that step 2 is obtained adds entry, and making its gross weight is 100 parts, at room temperature stirs, and obtains the environment-friendly type fracture acidizing and uses the breakdown of emulsion cleanup additive.
3. according to the preparation method of the environment-friendly type fracture acidizing described in claim 1 or 2 with the breakdown of emulsion cleanup additive, it is characterized in that: described low mass molecule alcohol is any one in methyl alcohol, ethanol or the Virahol.
4. according to the preparation method of the environment-friendly type fracture acidizing described in claim 1 or 2 with the breakdown of emulsion cleanup additive; It is characterized in that: the carbon number in the described alkyl polyglycoside is between 12 to 14; Alkyl polyglycoside is by the pure and mild glucose synthetic of renewable resources natural fat, is the more comprehensive new non-ionic surfactants of a kind of performance.
5. according to the preparation method of the environment-friendly type fracture acidizing described in claim 1 or 2 with the breakdown of emulsion cleanup additive, it is characterized in that: described biological demulsifying agent SWP is the fermented product that utilizes different carbon sources to generate by Pseudomonas aeruginosa.
6. the environment-friendly type fracture acidizing is characterized in that with the method for use of breakdown of emulsion cleanup additive: the environment-friendly type fracture acidizing uses mass percent that the breakdown of emulsion cleanup additive accounts for the fracturing liquid consumption by it directly to add in fracturing liquid or the acidizing fluid as the dosage of 0.3%-0.5% and uses.
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Cited By (5)
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| CN103923632A (en) * | 2014-01-28 | 2014-07-16 | 北京大德广源石油技术服务有限公司 | Desorbent and its evaluation method |
| CN112480899A (en) * | 2020-12-11 | 2021-03-12 | 德仕能源科技集团股份有限公司 | Demulsification cleanup additive for fracturing and preparation method thereof |
| CN114426828A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Oil washing demulsifier for fracturing fluid and application thereof |
| CN115785940A (en) * | 2022-12-01 | 2023-03-14 | 克拉玛依中科恒信科技有限责任公司 | Demulsification cleanup additive for fracture acidizing and preparation method and use method thereof |
| CN116218507A (en) * | 2023-05-08 | 2023-06-06 | 东营江源化工有限公司 | Demulsification and drainage-assisting composite additive for fracturing and acidizing and preparation method thereof |
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| CN112480899B (en) * | 2020-12-11 | 2022-05-24 | 德仕能源科技集团股份有限公司 | Demulsification and cleanup additive for fracturing and preparation method thereof |
| CN115785940A (en) * | 2022-12-01 | 2023-03-14 | 克拉玛依中科恒信科技有限责任公司 | Demulsification cleanup additive for fracture acidizing and preparation method and use method thereof |
| CN116218507A (en) * | 2023-05-08 | 2023-06-06 | 东营江源化工有限公司 | Demulsification and drainage-assisting composite additive for fracturing and acidizing and preparation method thereof |
| CN116218507B (en) * | 2023-05-08 | 2023-08-15 | 东营江源化工有限公司 | Demulsification and drainage-assisting composite additive for fracturing and acidizing and preparation method thereof |
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| CN102618250B (en) | 2015-06-17 |
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