Preparation method of a multifunctional slippery water fracturing fluid drag reducer

A hydraulic fracturing and multi-functional technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of long preparation time, low preparation cost, and high preparation efficiency, shorten the liquid preparation time, and improve the construction efficiency. , The effect of simplifying the dispensing procedure
CN106832111BActive Publication Date: 2019-01-04江西炼石环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
江西炼石环保科技有限公司
Publication Date
2019-01-04

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Abstract

The invention relates to a preparation method of a multifunctional slick water fracturing fluid drag reducer. The preparation method comprises the following steps: applying inverse emulsion polymerization reaction for compounding two non-ionic emulsifiers into a compound emulsifier, dissolving the compound emulsifier in an oily medium in the mass fraction of 0.3%, stirring for 1-2 hours under the protection of nitrogen, then adding 0.3% by mass fraction of a hydrophobic monomer, then adding 0.3-0.5% by mass fraction of a chelating agent and monomer solution of acrylamide and 2-acrylamide-2-methylpropanesulfonic acid, starting to heat, and after temperature is increased to 52-57 DEG C, adding an oil soluble initiator and a water soluble initiator in batches, and carrying out heat preservation for 8-10 hours after the initiator is completely added, so that stable water-in-oil type polymer emulsion is obtained finally. According to the invention, an inverse emulsion polymerization method is utilized, and by introducing special functional group substances and emulsifiers, a slick water drag reducer with anti-drag and discharge assisting functions is developed, slick water cost is reduced, more importantly, fluid preparation time is shortened, a fluid preparation procedure is simplified, and construction efficiency is greatly improved.
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Description

technical field

[0001] The invention relates to the technical field of petrochemical industry, in particular to a preparation method of a multifunctional slippery water fracturing fluid drag reducer. Background technique

[0002] Slick water fracturing is an effective measure to increase production of shale gas resources. Drag reducer is one of the main components of slick water, and its properties affect the quality of slick water. Emulsion-type polyacrylamide polymer is one of the most widely used drag reducers in slick water fracturing fluid, which has the advantages of good drag reduction effect and low dosage. The current drag reducer products have single performance, slow dissolution rate and high cost, especially the solid drag reducer, which has poor dispersion solubility in water and easily forms "fish eyes" in the solution, which seriously affects the quality of the solution and the construction effect. In order to solve the problem of slow dispersion and dissolut...

Claims

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