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Auto-suspension propping agent

A proppant, self-suspension technology, applied in the fields of production fluid, coating, drilling composition, etc., can solve problems such as environmental pollution and cost increase

Inactive Publication Date: 2019-02-12
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a self-suspending proppant to solve the problem that the proppant needs to be added with a gelling agent when used in clean water, resulting in increased cost and environmental pollution

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0038] Take the apparent density as 1.05g / cm 3 100 parts of ceramsite with a particle size of 20 / 40, heated to 180°C, pour the heated ceramsite into a bowl-shaped mixing casserole, add 2 parts of epoxy resin and 0.2 part of curing agent T31 and stir until the temperature reaches 170-180°C Finally, add 2 parts of propylene glycol polymer and 0.02 parts of dibutyltin dilaurate and stir. After the temperature reaches 100-130°C, add 0.02 parts of a mixture of diethylenetriamine and ethylenediamine and stir. After the temperature reaches 80-110°C, add Stir 1.4 parts of isocyanate, and take it out of the pot after the temperature reaches 70°C.

Embodiment 2

[0040] Take the apparent density as 1.5g / cm 3 100 parts of ceramsite with a particle size of 30 / 50, heated to 200°C, pour the heated ceramsite into a bowl-shaped mixing casserole and add 5 parts of phenolic resin and 1.5 parts of hexamethylenetetramine and stir until the temperature reaches 180- After 190°C, add 5 parts of ethylene glycol polymer and 0.005 parts of dibutyltin dilaurate and stir, and when the temperature reaches 80-130°C, add 0.75 parts of a mixture of triethylamine and triethylenetetramine and stir until the temperature reaches 70- After 110°C, add 3.5 parts of isocyanate and stir, and take out of the pot after the temperature reaches 40°C.

Embodiment 3

[0042] Take the apparent density as 2.1g / cm 3 100 parts of ceramsite with a particle size of 40 / 70, heated to 190°C, pour the heated ceramsite into a bowl-shaped mixing casserole and add 6 parts of epoxy ester resin and 1.8 parts of curing agent T31 and stir until the temperature reaches 170-180 After ℃, add 4 parts of ethylene glycol polymer and 0.004 parts of dibutyltin dilaurate and stir. After the temperature reaches 150-160℃, add 0.4 parts of ethylamine and stir. After the temperature reaches 110-120℃, add 2.8 parts of isocyanate and stir. Take it out of the pot when the temperature reaches 50°C.

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Abstract

The invention belongs to the technical field of mining of fluid ore of oil, natural gas, shale gas and the like, and particularly discloses an auto-suspension propping agent. The auto-suspension propping agent is prepared from aggregate and a covering layer, wherein the covering layer is prepared from resin, a curing agent and an additive, the aggregate is ceramsite with apparent density of 1.05-2.65 g / cm3, and the additive is an amine compound. The auto-suspension propping agent is mainly used for mining oil and shale gas, and the problem that when a propping agent is used in clear water, a gelatinizing agent needs to be added so that cost improvement and environmental pollution are caused is solved.

Description

technical field [0001] The invention belongs to the technical field of fluid mineral exploitation such as oil, natural gas and shale gas, and specifically discloses a self-suspending proppant. Background technique [0002] The innovation and development of conventional and unconventional oil and gas exploitation technologies in modern times have formed a normal technical specification for systematic hydraulic fracturing. The base mixed liquid is sent into the ground to create a variety of fractures of different sizes, widely distributed, and deep into the reservoir, and the obtained reservoir fractures are kept in an unclosed state to bring about the interconnection of the reservoir and the production pipeline to achieve the goal of reservoir stimulation. A technology system for increasing production. As a crucial technical method in this technical system, when the obtained reservoir fractures remain unclosed, it is necessary to fill the fractures with a proppant that can s...

Claims

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Application Information

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IPC IPC(8): C09K8/80C09D163/00C09D175/04C09D175/08C09D161/06C09D171/02
CPCC09D161/06C09D163/00C09D171/02C09D175/04C09D175/08C09K8/805
Inventor 熊帆熊鹰王正力陈秋庆
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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