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Water uptake expansion composition, water uptake expansion material and water uptake expansion packer

A technology of water-absorbing swelling and composition, which is applied in the field of packers of oil well special equipment, and can solve problems such as low grafting rate, lack of affinity between water-absorbing resin and rubber, and use

Active Publication Date: 2011-07-20
STARSE ENERGY & TECH GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantages are: 1. The process is complex, such as the use of solution reactions and the consumption of solvents
2. Low grafting rate and low water absorption rate
[0011] 1. Water-absorbing resin is usually granular or fine powder, which is not easy to disperse evenly in rubber
[0012] 2. The water-absorbent resin and rubber lack affinity, and it is easy to precipitate when the rubber expands

Method used

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  • Water uptake expansion composition, water uptake expansion material and water uptake expansion packer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1: prepare WSR of the present invention

[0061] A. 100 parts of HNBR, 100 parts of CMC, 30 parts of NMA, 55 parts of SDBS, 1 part of S1, 10 parts of DCP, 30 parts of HAF, 5 parts of stearic acid, 0.5 parts of zinc stearate, 0.5 parts of accelerator M, TMTD 2 parts, 1 part of antioxidant D, 3 parts of IPPD, 20 parts of white carbon black, 3 parts of N-(4-anilinophenyl) methacrylamide, 3 parts of zinc oxide, 2 parts of magnesium oxide, 7 parts of mica, On the internal mixer or open mill, the temperature is 50-55°C, the operation is 10-15min, the roller distance is 4-6mm, the thickness becomes 1-2mm, the mixing is uniform, the sheet is placed on and off the open mill, and cooled naturally.

[0062] B. After parking at room temperature for 17 hours, put it into a mold, vulcanize and shape it with a flat vulcanizer, and keep it at 180°Cx5minx10MPa to make a WSR test piece.

[0063] Its main performance indicators are as follows:

[0064] a. Hardness (Shore A): ...

Embodiment 2

[0067] Embodiment 2: prepare WSR of the present invention

[0068] A. 100 parts of NBR, 80 parts of CMC, 20 parts of NMA, 70 parts of SDBS, 20 parts of DCP, 60 parts of HAF, 3 parts of stearic acid, 5 parts of accelerator D, 2 parts of IPPD, 3 parts of white carbon black, N- 3 parts of (4-anilinophenyl) methacrylamide, 6 parts of N-(4-anilinophenyl) maleimide, 4 parts of zinc oxide, 15 parts of pottery clay on the internal mixer or open mixer, The temperature is 45-50°C, the operation is 10-15min, the roller distance is 4-6mm, the thickness is changed to 1-2mm, the mixing is even, the sheet is put on and off in the open mill, and cooled naturally.

[0069] B. After parking at room temperature for 17 hours, put it into a mold, vulcanize and shape it with a flat vulcanizer, and keep it at 170°Cx5minx10MPa to make a WSR test piece.

[0070] Its main performance indicators are as follows:

[0071] a. Hardness (Shore A): 88 degrees b. Tensile strength 5.58MPa

[0072] c. Elongat...

Embodiment 3

[0074] Embodiment 3: prepare WSR of the present invention

[0075] A. 100 parts of NR, 25 parts of CMC, 7 parts of AM, 20 parts of SDS, 6 parts of DCP, 40 parts of HAF, 1 part of stearic acid, 3 parts of accelerator CZ, 2 parts of anti-aging agent D, N-(4- 5 parts of anilinophenyl) methacrylamide, 0.5 parts of N, N'-m-phenylene bismaleimide, 5 parts of magnesium oxide, 10 parts of clay, 4 parts of mica, in internal mixer or open mixer , the temperature is 35-40°C, the operation is 10-15min, the roller distance is 4-6mm, and the thickness is changed to 1-2mm, and the mixing is uniform.

[0076] B. After parking at room temperature for 17 hours, put it into a mold, vulcanize it with a flat vulcanizer, keep it at 170°Cx10minx10MPa, and make a WSR test piece.

[0077] Its main performance indicators are as follows:

[0078] a. Hardness (Shore A): 60 degrees b. Tensile strength: 5.71MPa

[0079] c. Elongation at break: 200% d. Permanent deformation at break: 0%

[0080] e. Weig...

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Abstract

The present invention relates to a water-absorbent expansive composition, the application of the water-absorbent expansive composition, water-absorbent expansive material containing the water-absorbent expansive composition and packers made of the water-absorbent expansive material. The water-absorbent expansive composition of the present invention is made of water-absorbent agent, reaction monomer and surfactant. The water-absorbent agent is a naturally hydrophilic polymer or the derivative; the reaction monomer is monomer containing water-absorbent group such as carboxyl, hydroxyl, ether group, aroylamino, sulfonic group, carboxylate group, sulfonate group, quaternary ammonium salt monomer, or hydrophilic vinyl monomer after hydrolysis. The monomer contains double bonds and can be cross-linked with water-absorbent agent; wherein, the weight content of the water-absorbent agent is 3 portions to 100 portions; the weight content of the reaction monomer is 0 portion to 30 portions; the weight content of the surfactant is 0 portion to 70 portions.

Description

technical field [0001] The present invention relates to a water-swellable composition and its application, and also to a water-swellable material containing the water-swellable composition and its application, as well as a packer made of the water-swellable material, especially suitable for oil well special equipment Packer. Background technique [0002] The invention relates to a downhole tool for sealing off oil and water layers and adjusting the oil production profile. The tool is especially suitable for oil production wells with serious water production. During production and workover, the annular space between tubing and casing or well wall is usually isolated into upper and lower parts to control or close some reservoirs. In the process of oil production, the purpose of reducing the water content of crude oil can be achieved by selectively sealing the high-permeability layer downhole. For oil wells in the middle and later stages, they have entered the stage of high w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F251/00
Inventor 王强曹爱芬易会安
Owner STARSE ENERGY & TECH GROUP
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