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High-stability oil-based polymer powder suspension and preparation method thereof

A high-stability, polymer-based technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of low viscosity, low stability, high solid phase content, etc., and achieve good fluidity, strong stability, The effect of increasing the dissolution rate

Inactive Publication Date: 2016-07-27
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The first object of the present invention is to overcome the deficiencies of the above-mentioned existing background technology, provide a kind of high stability polymer powder oil-based suspension, solve the deficiency that the stability of traditional polymer powder suspension is too low, the high stability The oil-based suspension of non-toxic polymer powder can remain stable for 180 days at room temperature, and it also has the advantages of high solid phase content and low viscosity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The high-stable polymer powder oil-based suspension provided in this embodiment, the high-stable polymer powder oil-based suspension consists of a weighting agent, a stabilizer, a surfactant, a cosolvent, a polymer powder and a base Oil composition, each component and the mass percentage of each component are: weighting agent 10%; stabilizer 0.5%; surfactant 2%; cosolvent 0.1%; polymer powder 55%; base oil 32.4%;

[0017] The weighting agent is a high-density organic solvent, specifically dibromopropane; the stabilizer is fumed alumina; the surfactant is Span 80; the cosolvent is ethylene glycol monobutyl ether; The polymer powder is a water-soluble polymer, specifically hydroxypropyl guar gum; the base oil is an organic solvent, specifically environmentally friendly tire oil.

[0018] The preparation method of the high-stability polymer powder oil-based suspension provided in this example is as follows: (1) add fumed alumina into the environmental protection tire oil a...

Embodiment 2

[0021] The high-stable polymer powder oil-based suspension provided in this embodiment, the high-stable polymer powder oil-based suspension consists of a weighting agent, a stabilizer, a surfactant, a cosolvent, a polymer powder and a base Oil composition, each component and the mass percentage of each component are: weighting agent 8%; stabilizer 0.5%; surfactant 1%; cosolvent 0.5%; polymer powder 35%; base oil 55%;

[0022] The weighting agent is a high-density organic solvent, specifically brominated cottonseed oil; the stabilizer is fumed silica; the surfactant is naphthenic acid soap; the co-solvent is urea powder; The polymer powder is a water-soluble polymer, specifically polyacrylamide; the base oil is an organic solvent, specifically chlorinated waste oil.

[0023] The preparation method of the high-stable polymer powder oil-based suspension provided in this example is as follows: (1) add fumed silica to the chlorinated waste oil according to the ratio of raw material...

Embodiment 3

[0026] The high-stable polymer powder oil-based suspension provided in this embodiment, the high-stable polymer powder oil-based suspension consists of a weighting agent, a stabilizer, a surfactant, a cosolvent, a polymer powder and a base Oil composition, each component and the mass percentage of each component are: weighting agent 30%; stabilizer 1%; surfactant 0.8%; cosolvent 0.5%; polymer powder 20%; base oil 47.7%;

[0027] The weighting agent is a high-density organic solvent, specifically trichloroethane; the stabilizer is fumed silica; the surfactant is Tween 80; the co-solvent is methanol; the polymer The powder is a water-soluble polymer, specifically xanthan gum; the base oil is mineral oil, specifically white oil.

[0028] The preparation method of the high-stable polymer powder oil-based suspension provided in this example is as follows: (1) add fumed silica to the white oil according to the ratio of raw materials, use an ultrasonic oscillator to sonicate for ten ...

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PUM

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Abstract

The invention provides a high-stability oil-based polymer powder suspension. The high-stability oil-based polymer powder suspension is prepared from a weighting agent, a stabilizer, a surfactant, a cosolvent, polymer powder and base oil, wherein the weighting agent is a high-density organic solvent; the stabilizer is one of fumed silica and gas-phase aluminum oxide; the surfactant is one or two of naphthenic soap, Span 80, Tween 80, oleic acid, octylphenol polyoxyethylene ether and glyceryl triabietate; the cosolvent is one of methanol, urea and ethylene glycol monobutyl ether; the polymer powder is a water-soluble polymer; the base oil is an organic solvent. The defect that the stability of conventional polymer powder suspension is poor is overcome, and the high-stability oil-based polymer powder suspension can keep stable at the room temperature within 180 days and also has the advantages of high solid phase content and low viscosity.

Description

technical field [0001] The invention relates to the technical field of oil and gas reservoir stimulation, in particular to a high-stability polymer powder oil-based suspension, the invention also relates to a preparation method of the suspension, which is a continuous mixing process applicable to hydraulic fracturing thickener suspension. Background technique [0002] A homogeneously dispersed suspension is usually obtained by polymerization, which includes emulsion polymerization, suspension polymerization, dispersion polymerization, and the like. But for some natural polymer powders or some artificially synthesized powder products, how to evenly suspend and disperse them in the liquid phase has important practical significance. In hydraulic fracturing, in order to increase the dissolution rate of the thickener, avoid the formation of fish eyes during the liquid preparation process, and carry out continuous mixing, it is generally desired to uniformly disperse the water-so...

Claims

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Application Information

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IPC IPC(8): C09K8/64
CPCC09K8/64
Inventor 赵众从柳建新
Owner YANGTZE UNIVERSITY
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