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A kind of water-soluble fracturing temporary plugging agent and its synthesis method

A synthesis method and technology of a temporary plugging agent, which are applied in chemical instruments and methods, drilling compositions, preparation of organic compounds, etc., can solve the problems of affecting the effect of steering fracturing, inability to self-degrade, and low plugging efficiency, etc. To achieve the effect of improving fracturing effect, good promotion prospect and high temporary plugging intensity

Active Publication Date: 2021-11-19
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, provide a kind of water-soluble fracturing temporary plugging agent and its synthesis method, overcome in the prior art 1: the fracturing temporary plugging agent has poor effect and high cost; 2 : Affect the effect of diverting fracturing, and even lead to ineffective fracturing; 3: Solid plugging ball diverting agent, which has the characteristics of high strength and small deformation, but has problems such as easy to fall off, low plugging efficiency, and cannot be degraded by itself

Method used

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  • A kind of water-soluble fracturing temporary plugging agent and its synthesis method
  • A kind of water-soluble fracturing temporary plugging agent and its synthesis method
  • A kind of water-soluble fracturing temporary plugging agent and its synthesis method

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specific Embodiment approach

[0029] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention , any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope covered by the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. .

[0030] At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without...

Embodiment 1

[0032] The invention discloses a synthesis method of a water-soluble fracturing temporary plugging agent. The synthesis method comprises the following steps:

[0033] Step 1) Take acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, SM functional monomer, urea and water as raw materials, wherein acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid The weight ratio of acid, SM functional monomer, urea and water is 1500:1000:1:4:60:400, and the water-soluble fracturing temporary plugging agent is obtained through polymerization reaction

[0034]

[0035] Step 2) The water-soluble fracturing temporary plugging agent is used for subsequent treatment.

Embodiment 2

[0037] The invention discloses a synthesis method of a water-soluble fracturing temporary plugging agent. The synthesis method comprises the following steps:

[0038] Step 1) Take acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, SM functional monomer, urea and water as raw materials, wherein acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid The weight ratio of acid, SM functional monomer, urea and water is 1500:1000:1:4:60:400, and the water-soluble fracturing temporary plugging agent is obtained through polymerization reaction

[0039]

[0040] Step 2) The water-soluble fracturing temporary plugging agent is used for subsequent treatment.

[0041] Preferably, the specific synthesis method in the step 1) is: under cooling in a water bath, add acrylamide, acrylic acid, water, 2-acrylamide-2 -Methylpropanesulfonic acid, SM functional monomer, urea, start the agitator, stir evenly, add sodium carbonate and stir for 1 hour, and finally add...

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Abstract

The invention discloses a water-soluble fracturing temporary plugging agent and a synthesis method thereof. The synthesis method comprises the following steps: step 1) using acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, SM function Monomer, urea and water are raw materials, wherein the weight ratio of acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, SM functional monomer, urea and water is 1500:1000:1:4:60: 400. Obtain the water-soluble fracturing temporary plugging agent through a polymerization reaction; Step 2) Subsequent treatment of the water-soluble fracturing temporary plugging agent.

Description

technical field [0001] The invention belongs to the technical field of temporary plugging agent synthesis, and in particular relates to a water-soluble fracturing temporary plugging agent and a synthesis method thereof. Background technique [0002] Hydraulic fracturing technology has been widely used in the development of low-permeability oil and gas fields as the main measure for putting oil and gas wells into production or increasing production, and has made important contributions to the high and stable production of oil and gas fields. With the development of fracturing technology and the transformation of fracturing ideas, in order to increase the controlled reserves of hydraulic fracturing and increase the drainage area of ​​oil and gas wells, diversion fracturing technology has been developed, such as the initial fracturing fracture diversion technology, old well diversion repetition Fracturing technology, etc., the purpose of which is to press out fractures along ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/508C07C213/08C07C219/08C08F220/56C08F220/06C08F220/58C08F220/34
CPCC07C213/08C07C219/08C08F220/56C09K8/5083C08F220/06C08F220/585C08F220/34
Inventor 许洪星王祖文张冕刘国良兰建平池晓明温亚魁姬随波段腾龙杨敏纪冬冬陶长州刘小会尹俊禄高红平王科萌
Owner BC P INC CHINA NAT PETROLEUM CORP
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