High temperature resistant cleansing emulsion or microemulsion fracturing fluid and preparation method thereof
A high temperature resistant, hydraulic technology, applied in chemical instruments and methods, drilling compositions, reagents, etc., can solve problems such as high viscosity, inconvenient on-site use, slow dissolution, etc.
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Embodiment 1
[0223] Example 1: Preparation of high temperature resistant clean emulsion fracturing fluid
[0224] The implementation steps of this embodiment are as follows:
[0225] Step A: Prepare oil phase and emulsifier mixture
[0226] Add the mixed emulsifier composed of 30 parts by weight of white oil phase and 3 parts by weight of Pingping plus O-10 and span80 to the reactor equipped with mechanical stirring device, nitrogen inlet, constant pressure funnel and thermometer. Stir at constant temperature under certain conditions to obtain a homogeneous mixture;
[0227] Step B: Preparation of the aqueous phase
[0228] Acrylamide monomer A, (meth)acrylic acid monomer B, acryloxyethyl dimethyl octadecyl ammonium chloride monomer C and acrylamido sodium p-benzoate monomer D according to their weight ratio 10:10:0.5:0.25 is dissolved in water, the ratio of monomer weight to water weight is 1:1, the total weight of the water phase is 70, and 0.1% EDTA disodium salt is added based on th...
Embodiment 2
[0233] Example 2: Preparation of high temperature resistant clean emulsion fracturing fluid
[0234] The implementation steps of this embodiment are as follows:
[0235] Step A: Prepare oil phase and emulsifier mixture
[0236] Add the mixed emulsifier composed of 38 parts by weight of kerosene oil phase and 4 parts by weight of OP-1.5 and OP-7 to the reactor equipped with mechanical stirring device, nitrogen inlet, constant pressure funnel and thermometer. Constant temperature stirring under the condition to obtain a homogeneous mixture;
[0237] Step B: Preparation of the aqueous phase
[0238] (Meth) acrylamide monomer A, maleic anhydride monomer B, acryloyloxyethyl dimethyl octadecyl ammonium chloride monomer C and acrylamido sodium terebenzoate monomer D according to Their weight ratio is 65:65:1.0:0.80 soluble in water, the ratio of monomer weight to water weight is 1:1, the total weight of the water phase is 70, and 0.1% EDTA based on the total weight of the above mo...
Embodiment 3
[0242] Example 3: Preparation of high temperature resistant clean emulsion fracturing fluid
[0243] The implementation steps of this embodiment are as follows:
[0244] Step A: Prepare oil phase and emulsifier mixture
[0245] Add the mixed emulsifier composed of 60 parts by weight of diesel oil phase and 6 parts by weight of TX-10 and span80 to the reactor equipped with mechanical stirring device, nitrogen inlet, constant pressure funnel and thermometer, under the conditions of temperature 35°C and 280rpm Stir at a constant temperature to obtain a homogeneous mixture;
[0246] Step B: Preparation of the aqueous phase
[0247] N-hydroxypropyl (meth)acrylamide monomer A, fumaric acid monomer B, acryloyloxyethyl dimethyl octadecyl ammonium chloride monomer C and acrylamido sodium terebenzoate Body D is dissolved in water according to their weight ratio of 90:75:1.6:0.40, the ratio of monomer weight to water weight is 1:1, the total weight of the water phase is 70, and the to...
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