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Preparation method of multifunctional slick water fracturing fluid drag reducer

A water fracturing and multi-functional technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of long preparation time, low preparation cost, high preparation efficiency, shorten the time of liquid preparation and improve construction efficiency , The effect of simplifying the dosing procedure

Active Publication Date: 2017-06-13
江西炼石环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing technology still fails to meet the problems of low production cost and high production efficiency in the preparation of drag reducers.
[0003] Chinese Patent Application No. 201410119841.4 discloses a slick water drag reducer, but its preparation cost is high and the preparation time is long, so it is impossible to prepare a large amount of slick water drag reducer in a short period of time

Method used

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  • Preparation method of multifunctional slick water fracturing fluid drag reducer
  • Preparation method of multifunctional slick water fracturing fluid drag reducer
  • Preparation method of multifunctional slick water fracturing fluid drag reducer

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preparation example Construction

[0026] A preparation method of a multifunctional slick water fracturing fluid drag reducer, comprising the steps of:

[0027] Using inverse emulsion polymerization, two nonionic emulsifiers are compounded to form a compound emulsifier, and the compound emulsifier is dissolved in an oily medium at a mass fraction of 0.3%, added to a three-necked flask, and stirred under nitrogen protection for 1 ~2h, then add 0.3% hydrophobic monomer by mass fraction, then add 0.3-0.5% chelating agent by mass fraction, and monomer solution of acrylamide and 2-acrylamide-2-methylpropanesulfonic acid, start to heat up, When the temperature rises to 52-57°C, add oil-soluble initiator and water-soluble initiator in batches, keep warm for 8-10 hours after adding the initiator, and finally obtain a stable water-in-oil polymer emulsion. 2-acrylamido-2-methylpropanesulfonic acid is introduced into the polymer molecule for the purpose of improving the salt resistance of the drag reducer.

[0028] As a ...

Embodiment 1

[0039] A preparation method of a multifunctional slick water fracturing fluid drag reducer, comprising the steps of:

[0040] Using inverse emulsion polymerization, compound two non-ionic emulsifiers to form a compound emulsifier, dissolve the compound emulsifier in an oily medium at a mass fraction of 0.3%, add it to a three-necked flask, and stir for 1 hour under nitrogen protection , then add a mass fraction of 0.3% hydrophobic monomer, then add a mass fraction of 0.3% of a chelating agent, and a monomer solution of acrylamide and 2-acrylamide-2-methylpropanesulfonic acid, start to heat up, and wait until the temperature rises to At 52°C, add an oil-soluble initiator and a water-soluble initiator in batches, and keep warm for 8 hours after adding the initiator, and finally obtain a stable water-in-oil polymer emulsion.

[0041] In the present embodiment, the two types of nonionic emulsifiers are TW60 and SP80, namely polyoxyethylene sorbitan monostearate and sorbitan monool...

Embodiment 2

[0049]A preparation method of a multifunctional slick water fracturing fluid drag reducer, comprising the steps of:

[0050] Using inverse emulsion polymerization, compound two non-ionic emulsifiers to form a compound emulsifier, dissolve the compound emulsifier in an oily medium at a mass fraction of 0.3%, add it to a three-necked flask, and stir for 2 hours under nitrogen protection , then add a mass fraction of 0.3% hydrophobic monomer, then add a mass fraction of 0.5% of a chelating agent, and a monomer solution of acrylamide and 2-acrylamide-2-methylpropanesulfonic acid, start to heat up, and wait until the temperature rises to At 57°C, add an oil-soluble initiator and a water-soluble initiator in batches, and keep warm for 10 hours after adding the initiator, and finally obtain a stable water-in-oil polymer emulsion.

[0051] In the present embodiment, the two types of nonionic emulsifiers are TW60 and SP80, namely polyoxyethylene sorbitan monostearate and sorbitan monoo...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/58C08F210/14C08F2/30C09K8/64
CPCC09K8/64C08F2/30C08F220/56C08F220/585C08F210/14
Inventor 王满学
Owner 江西炼石环保科技有限公司
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