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Casing repair material with high adhesion to metal and preparation method thereof

A repair material and high-adhesion technology, applied in the fields of functional polymers and oilfield chemicals, can solve the problems of insufficient adhesion of metal oil casings, poor compatibility between coupling agents and furan resins, etc. To achieve good effect, improve the repair effect, enhance the effect of adhesion

Active Publication Date: 2021-10-26
汉中聚智达远环能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The application provides a casing repair material with high adhesion to metal and its preparation method, in order to solve the problem of poor compatibility between commonly used coupling agents and furan resins in the prior art. The adhesion of casing repair materials to metal oil casings does not meet the needs of actual use

Method used

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  • Casing repair material with high adhesion to metal and preparation method thereof
  • Casing repair material with high adhesion to metal and preparation method thereof
  • Casing repair material with high adhesion to metal and preparation method thereof

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preparation example Construction

[0045] Please refer to the attached figure 1 ,Such as figure 1 As shown, the technical solution of the present application also provides a method for preparing a sleeve repair material with high adhesion to metal, comprising the following steps:

[0046] S1: Mix the furan resin and the furan-modified silane coupling agent, and stir evenly to obtain a mixture;

[0047] S2: Add curing agent to the mixture after stirring evenly, and stir evenly;

[0048] S3: adding a crosslinking agent to the mixture after adding the curing agent, stirring evenly to obtain a coarse material;

[0049] S4: Seal the crude material, place it in an oven, set the temperature of the oven at 50-100° C., and react for 2-20 hours to obtain the casing repair material with high adhesion to metal.

Embodiment 1

[0052] A casing repair material with high adhesion to metal, comprising the following raw materials in parts by weight:

[0053]

[0054] and prepared by:

[0055] (1) mixing furfuryl alcohol furan resin and furan modified silane coupling agent, stirring evenly to obtain a mixture;

[0056] (2) add ethyl sulfate in the mixture after stirring, stir;

[0057] (3) Add tetrakis (3-mercaptopropionic acid) pentaerythritol ester to the mixture after adding the curing agent, stir evenly to obtain a coarse material;

[0058] (4) Seal the crude material, put it in an oven, set the temperature of the oven to 80° C., and react for 12 hours to obtain the casing repair material with high adhesion to metal.

Embodiment 2

[0060] A casing repair material with high adhesion to metal, comprising the following raw materials in parts by weight:

[0061]

[0062] and prepared by:

[0063] (1) mixing furfuryl alcohol furan resin and furan modified silane coupling agent, stirring evenly to obtain a mixture;

[0064] (2) add benzenesulfonyl chloride in the mixture after stirring, stir;

[0065] (3) Add trimethylolpropane tris(3-mercaptopropionate) to the mixture after adding the curing agent, and stir evenly to obtain a coarse material;

[0066] (4) Seal the crude material, put it in an oven, set the temperature of the oven to 80° C., and react for 12 hours to obtain the casing repair material with high adhesion to metal.

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Abstract

The application provides a casing repair material with high adhesion to metal, which includes the following raw materials in parts by weight: 60-95 parts of furan resin; 5-15 parts of curing agent; 0.5-5 parts of crosslinking agent 0.5-5 parts of furan-modified silane coupling agent. This application uses a furan-modified silane coupling agent to improve the compatibility between the coupling agent and the furan resin, thereby enhancing the adhesion between the repair material and the metal surface and improving the repair effect. By changing the curing agent and crosslinking agent ratio, change the crosslinking density and activity of the system, realize the controllable curing time within a certain time range, and solve the problem of poor compatibility between the commonly used coupling agent and furan resin in the prior art. The adhesion of casing repair materials to metal oil casings cannot meet the actual use requirements. The present application also provides a preparation method of the casing repair material, which is simple and easy to implement, has good effect and has high application value.

Description

technical field [0001] The application relates to the technical field of functional polymers and oilfield chemicals, in particular to a casing repair material with high adhesion to metal and a preparation method thereof. Background technique [0002] Oil casing is an important oil extraction device, mainly used to support the well wall during the drilling process and after the completion of the well, so as to ensure the normal operation of the entire oil well during the drilling process and after the completion of the well. During the long-term development of oil and gas wells, due to factors such as plastic deformation of downhole rock formations, perforation misshots, corrosion, and casing wear, the service life of casings is much lower than expected, seriously affecting the normal production of oil fields. [0003] At present, the commonly used casing repair technologies are mainly divided into cement repair, expansion pipe subsidy repair and chemical repair technology. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J161/00C09J11/06
CPCC09J11/06C09J161/00C08K5/544C08K5/41C08K5/37
Inventor 赵伟王津阳张贵梓马艳华
Owner 汉中聚智达远环能科技有限公司
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