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A kind of water-in-oil type nanoemulsion, nanoemulsion composite response type viscous acid thickener and preparation method thereof

A nano-emulsion, water-in-oil technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of poor temperature resistance and acid resistance stability, poor shear resistance of thickeners, and weak viscosity increasing ability. , to achieve the effect of optimizing temperature resistance, improving viscosity, acid resistance and temperature resistance, and promoting dissolution rate

Active Publication Date: 2021-10-29
SHANDONG NUOER BIOLOGICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing thickeners have poor shear resistance, weak thickening ability, and poor temperature and acid resistance stability. Aiming at the defects in the prior art, a water-in-oil nanoemulsion, Nanoemulsion composite response type viscosifying acid thickener and preparation method thereof

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  • A kind of water-in-oil type nanoemulsion, nanoemulsion composite response type viscous acid thickener and preparation method thereof
  • A kind of water-in-oil type nanoemulsion, nanoemulsion composite response type viscous acid thickener and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] In this example, a nanoemulsion composite response type viscosity-changing acid thickener is prepared through the following steps

[0061] (1) Preparation of ultrafine powder of thickener

[0062] The preparation of the thickener consists of the following raw materials in parts by weight: 10 parts of acrylamide, 40 parts of acryloyl morpholine, 120 parts of methacryloyloxyethyltrimethylammonium chloride, N , N - 50 parts of dimethylacrylamide, 0.5 part of trimethylolpropane triacrylate, 0.5 part of dodecyl mercaptan, 0.1 part of azobisisobutyronitrile, 0.1 part of potassium persulfate, 0.2 part of sodium bisulfite , 750 parts of water; the preparation method is: acrylamide, acryloylmorpholine, methacryloyloxyethyltrimethylammonium chloride, N , N -After mixing dimethylacrylamide, trimethylolpropane triacrylate and water thoroughly, adjust the pH value to 4.0, then add dodecylmercaptan, potassium persulfate and azobisisobutyronitrile and stir for 30min , transferred ...

Embodiment 2

[0073] 本实施例通过以下步骤制备得到一种纳米乳液复合响应型变粘酸稠化剂

[0074] (1)稠化剂超细粉制备

[0075] 稠化剂制备由下列重量份的原料组成:丙烯酰胺20份,丙烯酰吗啉60份,甲基丙烯酰氧乙基三甲基氯化铵140份, N , N -二乙基丙烯酰胺70份,三丙二醇二丙烯酸酯0.7份,叔十二烷基硫醇0.7份,偶氮二异丁腈0.25份,过硫酸钾0.15份,亚硫酸氢钠0.3份,水700份;

[0076] 制备方法是:将丙烯酰胺,丙烯酰吗啉,甲基丙烯酰氧乙基三甲基氯化铵, N , N -二乙基丙烯酰胺,三丙二醇二丙烯酸酯和水充分混合均匀后,调节pH值至4.5,再加入叔十二烷基硫醇、过硫酸钾和偶氮二异丁腈后搅拌30min,转入反应釜中,通氮气除氧60min,在13℃下加入亚硫酸氢钠引发聚合,反应4h后,得到稠化剂胶块,经过造粒、烘干、粉碎、筛分后得到200目的稠化剂超细粉。

[0077] (2)油包水型纳米乳液制备

[0078] 包含如下重量份组成:

[0079] (a)水相,由下列重量份的原料组成:丙烯酰胺30份,丙烯酰吗啉110份,乙烯基三乙基硅烷110份,二甲基二烯丙基氯化铵65份, N -十六烷基丙烯酰胺7份,水280份,过硫酸铵0.25份。

[0080] (b)油相,由下列重量份的原料组成:白油340份,司盘60为52份,吐温40为8份。

[0081] (c)亚硫酸氢钠0.3份,壬基酚聚氧乙烯醚20份。

[0082] 制备方法为:将丙烯酰胺,丙烯酰吗啉,乙烯基三乙基硅烷,二甲基二烯丙基氯化铵, N -十六烷基丙烯酰胺和水混合均匀,调整pH值为4.0,加入过硫酸铵混合均匀;在8000rpm的搅拌速度下,将白油、司盘60、吐温40和水相混合,直至乳化体系粘度达到300mPa·s;通氮气除氧60min,在200rpm的搅拌速度下,泵入亚硫酸氢钠引发聚合,反应温度30℃,反应4h反应结束,继续保温2h,加入壬基酚聚氧乙烯醚得到油包水型纳米乳液。

[0083] (3)纳米乳液复合响应型变粘酸稠化剂制备

[0084] 响应型变粘酸稠化剂由以下重量份组成:稠化剂超细粉275份,改性高岭土17份,激活剂(乙二醇:环氧乙基缩合物APE-7:水=1:2:1)8份,白油200份,油包水...

Embodiment 3

[0087] 本实施例通过以下步骤制备得到一种纳米乳液复合响应型变粘酸稠化剂

[0088] (1)稠化剂超细粉制备

[0089] 稠化剂制备由下列重量份的原料组成:丙烯酰胺30份,丙烯酰吗啉80份,甲基丙烯酰氧乙基三甲基氯化铵160份, N -异丙基丙烯酰胺90份,三羟甲基丙烷三丙烯酸酯1份,十二烷基硫醇1份,偶氮二异丁腈0.5份,过硫酸钾0.2份,亚硫酸氢钠0.4份,水650份;

[0090] 制备方法是:将丙烯酰胺,丙烯酰吗啉,甲基丙烯酰氧乙基三甲基氯化铵, N -异丙基丙烯酰胺,三羟甲基丙烷三丙烯酸酯和水充分混合均匀后,调节pH值至5.0,再加入十二烷基硫醇、过硫酸钾和偶氮二异丁腈后搅拌30min,转入反应釜中,通氮气除氧60min,在14℃下加入亚硫酸氢钠引发聚合,反应4h后,得到稠化剂胶块,经过造粒、烘干、粉碎、筛分后得到200目的稠化剂超细粉。

[0091] (2)油包水型纳米乳液制备

[0092] 包含如下重量份组成:

[0093] (a)水相,由下列重量份的原料组成:丙烯酰胺40份,丙烯酰吗啉140份,(丙烯酸氧基甲基)二甲基甲氧基硅烷140份,二甲基二烯丙基氯化铵70份,十八烷基丙烯酸酯10份,水370份,过硫酸铵0.5份。

[0094] (b)油相,由下列重量份的原料组成:白油320份,司盘60为45份,异构十三醇聚氧乙烯醚1303为15份。

[0095] (c)亚硫酸氢钠0.5份,壬基酚聚氧乙烯醚30份。

[0096] 制备方法为:将丙烯酰胺,丙烯酰吗啉,(丙烯酸氧基甲基)二甲基甲氧基硅烷,二甲基二烯丙基氯化铵,十八烷基丙烯酸酯和水混合均匀,调整pH值为4.0,加入过硫酸铵混合均匀;在10000rpm的搅拌速度下,将白油、司盘60、异构十三醇聚氧乙烯醚1303和水相混合,直至乳化体系粘度达到300mPa·s;通氮气除氧60min,在300rpm的搅拌速度下,泵入亚硫酸氢钠引发聚合,反应温度30℃,反应4h反应结束,继续保温2h,加入壬基酚聚氧乙烯醚得到油包水型纳米乳液。

[0097] (3)纳米乳液复合响应型变粘酸稠化剂制备

[0098] 响应型变粘酸稠化剂由以下重量份组成:稠化剂超细粉350份,改性硅酸镁铝20份,激活剂(乙二醇:环氧乙基缩合物APE-7:水=1:...

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Abstract

The invention relates to the technical field of oil and gas field development, and provides a water-in-oil nanoemulsion, a nanoemulsion composite response type viscosity-changing acid thickener and a preparation method thereof, and the nanoemulsion composite response type viscosity-changing acid thickener It contains the following components: thickener superfine powder 200~350 parts, coating agent 15~20 parts, activator 5~10 parts, white oil 135~235 parts, and water-in-oil nanoemulsion 390~650 parts The thickening agent of the present invention takes superfine powder as the core, the suspension system is the middle layer, and the nanoemulsion is the outer layer; the nanoemulsion includes an aqueous phase, an oil phase and a phase inversion agent, which is acrylamide, acryloyl morpholine, and a viscosifying unit body, dimethyl diallyl ammonium chloride, copolymer of hydrophobic monomer; superfine powder is a copolymer of acrylamide, acryloyl morpholine, cationic monomer and responsive monomer; suspension system is coating agent, The package system composed of activator and white oil is suitable for deep well and ultra-deep well oil and gas field acidizing construction operations.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a water-in-oil nano-emulsion, a nano-emulsion composite response type viscosity-changing acid thickener and a preparation method thereof. Background technique [0002] At present, thickened acid technology has been widely valued as an important technology and development method for increasing production and injection, and has played an important role in carbonate reservoirs and some sandstone reservoirs. In this technology, the chemical reaction between the acid liquid and the formation rock is carried out in three steps: ① hydrogen ions are transferred from the acid liquid to the rock surface; ② hydrogen ions react with reactive rock minerals; ③ the reaction products diffuse into the acid liquid. It is found through experiments that the reaction rate of the first step in the three-step reaction is the slowest, and this step also determines the overall speed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/34C08F220/54C08F220/58C08F220/56C08F230/08C08F226/02C08F220/18C09K8/64C09K8/68C09K8/72C09K8/88
CPCC08F220/34C08F220/58C08F230/085C09K8/725C09K8/68C09K8/882C09K8/64C09K2208/10C08F220/54C08F220/56C08F226/02C08F220/1818
Inventor 荣敏杰孙建波许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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