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Expanding material composition, self-suspension propping agent, method for preparing same and application of self-suspension propping agent

A technology of expansive materials and compositions, which is applied in drilling compositions, chemical instruments and methods, and earthwork drilling and production, and can solve problems such as difficulty in fracturing fluid transportation, formation pollution, and blockage of oil outlet pores, so as to reduce viscosity , reduce pollution, avoid the effects of organic solvents

Inactive Publication Date: 2017-07-07
BEIJING RECHSAND SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of expansion material composition and self-suspending proppant and its preparation method and application, this expansion material composition can be applied to prepare the self-suspension proppant that relative density is low, can suspend in clear water, with It solves the technical problem that high-viscosity fracturing fluid is required to suspend proppant particles in the prior art, and high-viscosity fracturing fluid causes difficulty in fracturing fluid transportation, and at the same time, it can solve the problem that the polymer compound added in the fracturing fluid blocks the oil outlet pores And the technical problem of polluting the formation

Method used

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  • Expanding material composition, self-suspension propping agent, method for preparing same and application of self-suspension propping agent
  • Expanding material composition, self-suspension propping agent, method for preparing same and application of self-suspension propping agent
  • Expanding material composition, self-suspension propping agent, method for preparing same and application of self-suspension propping agent

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preparation example Construction

[0030] The present invention also provides the preparation method of above-mentioned self-suspending proppant, and this method comprises the following steps:

[0031] (1) Disperse and mix the proppant body, binder and curing agent uniformly at the first temperature to obtain granular aggregate with binder and / or curing agent attached, wherein, relative to 100 parts by weight of proppant agent body, the amount of the binder is 1-30 parts by weight, and the amount of the curing agent is 0.1-2 parts by weight;

[0032] (2) Dispersing and mixing the granular aggregate and the expansive material composition at a second temperature so that the expansive material composition is coated on the granular aggregate to obtain a granular self-suspending proppant , wherein, relative to 100 parts by weight of the proppant body, the amount of the expansion material composition is 5-40 parts by weight.

[0033] The preparation method of the self-suspending proppant of the present invention can...

Embodiment 1

[0040] This example is used to illustrate the expansion material composition of the present invention and the preparation method and self-suspension proppant prepared from the expansion material composition.

[0041] The expansion material composition of this embodiment is 100 parts by weight of polyacrylamide (purchased from Ciba, Switzerland, with a weight average molecular weight of 22 million) and 1 part by weight of epoxy resin E44 (purchased from Nantong Xingchen Synthetic Materials Co., Ltd.).

[0042] (1) Using quartz sand (6-10 mesh in particle size) as raw material, after scrubbing and drying at 120°C for 5 hours, screen 6-40 mesh quartz sand as aggregate;

[0043] (2) Take 100 parts by weight of screened quartz sand, heat it to 240°C, add 1 part by weight of epoxy resin E-51 (618), 0.1 part by weight of curing agent phthalic anhydride, stir and mix evenly to obtain a binder package Covered granular aggregate;

[0044] (3) When the temperature of the above-mentioned...

Embodiment 2

[0047] This example is used to illustrate the expansion material composition of the present invention and the preparation method and self-suspension proppant prepared from the expansion material composition.

[0048] The expansion material composition of this embodiment is 100 parts by weight of polyacrylic acid (purchased from Changzhou Runyang Chemical Co., Ltd., GY-303, with a weight average molecular weight of 20000) and 12 parts by weight of epoxy resin E14 (purchased from Nantong Xingchen Synthetic Materials Co., Ltd. Ltd.).

[0049] (1) Take 100 parts by weight of ceramsite (particle size is 100-200 mesh), heat to 190 ° C, add 30 parts by weight of binder bisphenol A type unsaturated polyester 3301, add curing agent phthalic anhydride 2 parts by weight, stirred and mixed evenly to obtain binder-coated granular aggregate;

[0050] (2) When the temperature of the above-mentioned binder-coated granular aggregate drops to 70° C., add 40 parts by weight of the above-mention...

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Abstract

The invention discloses an expanding material composition, a self-suspension propping agent, a method for preparing the same and application of the self-suspension propping agent. The expanding material composition, the self-suspension propping agent, the method and the application have the advantages that the expanding material composition can be coated on a propping agent body and can be quickly swollen in water, stable hydration layers can be formed on the outer surfaces of propping agent granules, the relative density of the propping agent granules can be reduced, a small quantity of organic molecules in the expanding material composition can be expanded in the water, the viscosity of the water can be improved, and accordingly the propping agent granules can be suspended in the water advantageously; the water can be used as fracturing fluid, accordingly, fracturing fluid does not need to be prepared, the expanding material composition and the self-suspension propping agent are convenient to operate, equipment is simple, and organic solvents can be omitted; the viscosity of the fracturing fluid can be lowered, and accordingly the fracturing fluid delivery difficulty can be lowered; additional macromolecular compounds for the fracturing fluid can be omitted, accordingly, the problem of blockage of oil and gas production pores due to macromolecular compounds which flow into underground environments along with existing fracturing fluid can be solved, and stratum environment pollution due to the macromolecular compounds can be reduced.

Description

technical field [0001] The invention relates to the field of fluid mine mining, in particular to an expansion material composition, a self-suspension proppant, a preparation method and application thereof. Background technique [0002] In the mining process of fluid mines such as oil and natural gas, it is often necessary to use fracturing technology, that is, a method that uses hydraulic action to form cracks in oil and gas layers, so it is also called hydraulic fracturing. Hydraulic fracturing is the use of surface high-pressure pumps to squeeze fracturing fluid with high viscosity into the oil layer through the wellbore. When the rate of injection of fracturing fluid exceeds the absorption capacity of the oil layer, a very high pressure will be formed on the oil layer at the bottom of the well. When this pressure exceeds the fracture pressure of the oil layer near the bottom of the well, the oil layer will be pushed open and fractures will be generated. At this time, if ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/805
Inventor 秦升益王中学
Owner BEIJING RECHSAND SCI & TECH GRP
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