High-deformation type water absorption resin plugging agent material preparation method

A technology of water-absorbing resin and plugging agent, applied in the field of plugging materials, can solve problems such as poor deformation ability of plugging materials, and achieve the effects of improving mechanical strength, excellent elastic deformation performance, and increasing strain.

Inactive Publication Date: 2019-04-16
郭跃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problem of poor deformation ability of the ex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] In terms of parts by weight, weigh 45 parts of deionized water, 10 parts of chitosan, 3 parts of N, N'-methylenebisacrylamide, and 3 parts of polyvinyl alcohol in a three-necked flask, and exhaust with nitrogen Air, control the rate of nitrogen gas introduction to 25mL / min, after nitrogen gas is introduced for 1min, and stir and mix at 40°C for 25min to obtain the mixed solution; then weigh 45 parts of the mixed solution and 10 parts by weight Acrylamide, 6 parts of acrylic acid and 2 parts of 5% ammonium persulfate solution by mass fraction were placed in an Erlenmeyer flask, stirred and mixed, and 10% by mass fraction of sodium hydroxide solution was added dropwise until the pH was 8.0. After the reaction at 65°C for 3 hours, Collect the mixed gel solution; weigh 45 parts by mass fraction of 1% acetic acid solution, 10 parts by mass fraction of 2% sodium dodecylbenzenesulfonate solution, 1 part of chitosan, and 0.1 part of persulfuric acid in parts by weight Ammonium,...

example 2

[0021] In parts by weight, weigh 47 parts of deionized water, 12 parts of chitosan, 4 parts of N, N'-methylenebisacrylamide, and 4 parts of polyvinyl alcohol in a three-necked flask, and exhaust with nitrogen Air, control the rate of nitrogen gas introduction to 28mL / min, after nitrogen gas is introduced for 1min, and stir and mix at 45°C for 28min, the mixed solution is obtained; then weigh 48 parts of the mixed solution and 12 parts of the mixed solution in parts by weight Acrylamide, 7 parts of acrylic acid and 2 parts of 5% ammonium persulfate solution by mass fraction were placed in an Erlenmeyer flask, stirred and mixed, and 10% by mass fraction of sodium hydroxide solution was added dropwise until the pH was 8.0. Collect the mixed gel solution; weigh 48 parts by mass fraction of 1% acetic acid solution, 12 parts by mass fraction of 2% sodium dodecylbenzenesulfonate solution, 1 part of chitosan, 0.2 part of persulfuric acid Ammonium, 4 parts of acrylic acid, 2 parts of N...

example 3

[0023] In terms of parts by weight, weigh 50 parts of deionized water, 15 parts of chitosan, 5 parts of N, N'-methylenebisacrylamide, and 5 parts of polyvinyl alcohol in a three-necked flask, and ventilate them with nitrogen. Air, control the rate of nitrogen gas introduction to 30mL / min, after nitrogen gas is introduced for 2 minutes, and stir and mix at 50°C for 30 minutes to obtain the mixed solution; then weigh 50 parts of the mixed solution and 15 parts by weight Acrylamide, 8 parts of acrylic acid and 3 parts of 5% ammonium persulfate solution by mass fraction were placed in an Erlenmeyer flask, stirred and mixed, and 10% by mass fraction of sodium hydroxide solution was added dropwise until the pH was 8.0. After the reaction at 75°C for 5 hours, Collect the mixed gel solution; weigh 50 parts by weight of 1% acetic acid solution, 15 parts by weight of 2% sodium dodecylbenzenesulfonate solution, 2 parts of chitosan, and 0.3 parts of persulfuric acid Ammonium, 5 parts of a...

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Abstract

The invention relates to a high-deformation type water absorption resin plugging agent material preparation method, and belongs to the technical field of plugging materials. According to the present invention, chitosan and montmorillonite are compounded to form a first network with cross-link density, the first network is modified to form a network structure with a porous structure, and a water absorption gel system prepared from acrylic acid, acrylamide and the like is introduced in the network; the chemically cross-linked gel has the characteristic of non-uniform system, such that the gel has good elastic stress so as to achieve excellent elastic deformation property; through the interpenetrating structure between the gel and the resin, the gaps of the first network are filled, such thatthe strain is increased, the chain link movement of the first cross-linked network is limited, and the gel and the resin can relatively slide and move during the being pressed so as to effectively disperse the acting force; and through the force unloading dispersing, by effectively improving the mechanical strength of the material, the plugging material has excellent mechanical property and excellent elastic deformation strength so as to effectively improve the use range.

Description

technical field [0001] The invention relates to a preparation method of a highly deformable water-absorbing resin plugging agent material, which belongs to the technical field of plugging materials. Background technique [0002] Lost circulation is a complex downhole situation that is often encountered during drilling. It may occur in shallow, middle and deep formations, or in formations of different geological ages, and may occur in various lithologic formations. Drilling fluid enters the formation from the wellbore through the lost channel. At this time, the construction personnel will consume a lot of mud and plugging materials to deal with the problem of lost circulation. If it is handled properly, the consumption of plugging can be greatly reduced; if it is not handled properly, it will lead to unpredictable Human, financial and time losses, and may cause downhole accidents such as well collapse, drill sticking, blowout, etc. In severe cases, it may lead to problems suc...

Claims

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Application Information

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IPC IPC(8): C09K8/467C08F220/56C08F220/06C08F255/00C08F222/38
CPCC08F220/56C08F255/00C09K8/426C09K8/467C08F220/06C08F222/385
Inventor 郭跃王传河骆兵建
Owner 郭跃
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