A kind of emulsion with drag reduction and thickening properties and rapid dissolution in fracturing and preparation method thereof
An emulsion and performance technology, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as rapid dissolution, thickening, drag reduction, etc.
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specific Embodiment approach
[0020] Specific implementations include:
[0021] (1) Preparation of organic phase: add a certain amount of organic solvent to a polymerization kettle equipped with a stirring device, and then continue to add a certain amount of emulsifying surfactant or a mixture of surfactants to the polymerization kettle, stirring and mixing uniformly;
[0022] (2) Preparation of the water phase, add a certain amount of water to another liquid mixing kettle equipped with a stirring device, and then add a certain amount of nano-polymer microspheres and monomers with chain extenders in order, and add alkali Adjust the pH of the system, cool down, and add initiator;
[0023] (3) Mix and emulsify, introduce the prepared water phase into the polymerization tank containing the organic phase, stir and mix, and further emulsify through the emulsification pump at the bottom of the tank to obtain a more stable emulsion;
[0024] (4) Polymerization, inert gas is introduced into the polymerization kettle, whil...
Embodiment 1
[0028] Add 1000kg of No. 7 white oil to a 3-party polymerization tank equipped with a stirring device, and then continue to add 150kg Span80 and 10kg Tween60 to the polymerization tank, stir and mix evenly; add 1000kg to another 3-party liquid preparation tank equipped with a stirring device Deionized water, then add 90kg of nano-polymer microspheres with chain extenders, 800kg of acrylamide, 80kg of acrylic acid, 20kg of AMPS in sequence, add sodium hydroxide to adjust the pH of the system to 7.5±0.5, and cool to 15℃. Add 50g of the initiator ammonium persulfate; introduce the prepared water phase through the bottom pump into the polymerization tank containing the organic phase for stirring and mixing, and further emulsify it through the emulsification pump at the bottom of the tank to obtain a more stable emulsion; Nitrogen was introduced into the kettle while the temperature was lowered to 20°C to carry out the polymerization reaction, and the temperature was controlled so th...
Embodiment 2
[0030] Add 1000kg of kerosene to a 3-party polymerization tank equipped with a stirring device, and then continue to add 400kg Span60 and 50kg OP-7 to the polymerization tank, stir and mix evenly; add 1000kg deionization to another 3-party liquid-dispensing tank equipped with a stirring device Water, then add 10kg of nano polymer microspheres with chain extenders, 400kg of acrylamide, 200kg of acrylic acid, 100kg of AMPS in order, add sodium hydroxide to adjust the pH of the system to 6.5±0.5, cool to 15℃, add initiation Sodium persulfate 100g; the prepared water phase is introduced into the polymerization tank containing the organic phase through the tank bottom pump and stirred and mixed, and further emulsified by the emulsification pump at the bottom of the tank to obtain a more stable emulsion; Blow in nitrogen gas while cooling down to 20°C to proceed polymerization reaction and control the temperature so that the final temperature of the system is lower than 100°C. The fi...
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Abstract
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