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Base solution composition of chemical rubber plug, chemical rubber plug composition, chemical rubber plug and application process of chemical rubber plug

A technology of composition and chemical glue, which is applied in the direction of drilling composition, chemical instruments and methods, wellbore/well components, etc., can solve the problems of artificial fracture height and shape development that cannot be fractured efficiently, and achieve height and Efficient control of morphological development, improvement of plugging effect and reduction of production cost

Active Publication Date: 2021-07-20
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a base liquid composition of a chemical rubber plug, a chemical rubber plug composition, a chemical rubber plug and its application process, so as to solve the problem that the height and shape development of fracturing artificial fractures cannot be efficiently performed in the prior art. problem of control

Method used

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  • Base solution composition of chemical rubber plug, chemical rubber plug composition, chemical rubber plug and application process of chemical rubber plug
  • Base solution composition of chemical rubber plug, chemical rubber plug composition, chemical rubber plug and application process of chemical rubber plug
  • Base solution composition of chemical rubber plug, chemical rubber plug composition, chemical rubber plug and application process of chemical rubber plug

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 0.005 part of sodium gluconate, 0.5 part of hydroxypropyl guar gum, 98 parts of water, 0.1 part of inorganic clay anti-swelling agent, 0.1 part of polyoxyethylene polyoxypropylene polyether, 0.1 part of fluorocarbon surface active The agent was stirred, the stirring speed was 1500r / min, and the stirring time was 8min to obtain the base liquid composition of the chemical rubber stopper.

Embodiment 2

[0061] With 0.05 parts of sodium gluconate, 0.8 parts of hydroxypropyl guar gum, 98.5 parts of water, 3 parts of inorganic clay anti-swelling agent, 0.5 parts of polyoxyethylene polyoxypropylene polyether, 0.5 parts of fluorocarbon surface active The agent was stirred, the stirring speed was 1500r / min, and the stirring time was 8min to obtain the base liquid composition of the chemical rubber stopper.

Embodiment 3

[0063] 0.08 parts of sodium gluconate, 1.2 parts of hydroxypropyl guar gum, 99 parts of water, 6 parts of inorganic clay anti-swelling agent, 1 part of polyoxyethylene polyoxypropylene polyether, 1 part of fluorocarbon surface active The agent was stirred, the stirring speed was 1800r / min, and the stirring time was 15min to obtain the base liquid composition of the chemical rubber stopper.

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Abstract

The invention provides a base solution composition of a chemical rubber plug, a chemical rubber plug composition, a chemical rubber plug and an application process of the chemical rubber plug. The base solution composition for the chemical rubber plug is prepared from the following components in parts by weight: 0.005-0.08 part of a delayed cross-linking agent, 0.5-1.2 parts of a thickening agent and 98-99 parts of water. According to the base solution composition for the chemical rubber plug, due to the fact that the delayed cross-linking agent is added, the cross-linking time of the high-viscosity rubber plug is prolonged, the plugging effect is improved, the construction friction resistance is reduced, and meanwhile the problem that the high-temperature shear viscosity of the chemical rubber plug is rapidly reduced is solved; and therefore, the purpose of efficiently controlling the height and morphological development of the fractured artificial fracture is achieved. The base solution composition for the chemical rubber plug is simple in formula, the raw materials are cheap and easy to obtain, and the production cost is reduced to a certain extent.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a base liquid composition of a chemical rubber plug, a chemical rubber plug composition, a chemical rubber plug and an application process thereof. Background technique [0002] Hydraulic fracturing is an important measure for increasing production of oil and gas wells and increasing injection of water wells. It can reduce fluid flow resistance by forming artificial fractures to achieve the purpose of increasing production and injection. However, the height and shape control of artificial fractures is one of the key factors affecting the fracturing effect. . First, when there is no shielding layer in the production layer or the shielding layer does not have sufficient strength and thickness, the fractures are easy to break through the interlayer and extend, penetrate into the shielding layer or even penetrate the shielding layer, forming a "top-to-bottom" fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/44E21B33/134
CPCC09K8/44E21B33/134C09K2208/12
Inventor 外力·阿不力米提吕振虎邬国栋潘竟军董景锋孔明炜汪志臣张敬春王牧群
Owner PETROCHINA CO LTD
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