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Resin fiber and preparation method thereof

A resin fiber and fiber technology, applied in the field of resin fiber and its preparation, can solve the problems of low plugging efficiency, repetitive leakage, low pressure bearing capacity of plugging materials, etc.

Active Publication Date: 2021-09-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in related technologies, fibers are directly compounded with the above-mentioned substances, and the resulting plugging material has a low pressure bearing capacity, and repeated leakage is prone to occur in the follow-up, resulting in low plugging efficiency.

Method used

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  • Resin fiber and preparation method thereof
  • Resin fiber and preparation method thereof
  • Resin fiber and preparation method thereof

Examples

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Effect test

preparation example Construction

[0064] The embodiment of the present application provides a kind of preparation method of resin fiber, this method comprises:

[0065] Step 1: Put the target fiber into the multifunctional fluidized bed, start the blower, push and suspend the target fiber through the blower.

[0066] The blast speed of the blower is 40~80m 3 / h, the jet pressure is 0.4~0.6MPa, the air inlet temperature is 50~100℃, and the air outlet temperature is 40~80℃.

[0067] Step 2: Under the action of a constant-flow pump, spray the first resin solution on the target fibers with a high-pressure spray gun at a spray rate of 0.5-2 L / h, and dry for 2-6 hours to obtain the first fibers.

[0068] In this step, under the action of a constant flow pump, the first resin solution is atomized into fine droplets through a high-pressure spray gun, and sprayed at a spray rate of 0.5-2L / h on the target that is suspended and formed into a fluidized state due to the high-temperature airflow. On fibers, the intermitte...

Embodiment 1

[0079] In this embodiment, the mass ratio of the target fiber to the first resin solution is 1:0.098, the mass ratio of the target fiber to the second resin solution is 1:0.002, and the first resin solution includes: phenolic resin, epoxy resin and solvent .

[0080] Step 1: Put the basalt fiber with a length of 2-9 mm and a thickness of 0.3-0.8 mm into the multifunctional fluidized bed, start the blower, and push and suspend the basalt fiber through the blower.

[0081] The blower blowing speed is 80m 3 / h, the jet pressure is 0.4MPa, the air inlet temperature is 70°C, and the air outlet temperature is 70°C.

[0082] Step 2: Under the action of a constant flow pump, spray the first resin solution on the basalt fiber with a high-pressure spray gun at a spray rate of 1 L / h, and dry for 3 hours to obtain the first fiber.

[0083] Before this step, prepare the first resin solution. The preparation process of the first resin solution is: add the ethanol that mass percent is 62%...

Embodiment 2

[0087] In this embodiment, the mass ratio of the target fiber to the first resin solution is 1:0.286, the mass ratio of the target fiber to the second resin solution is 1:0.014, and the first resin solution includes: phenolic resin, epoxy resin and solvent .

[0088] Step 1: Put glass fibers with a length of 2-9 mm and a thickness of 0.3-0.8 mm into a multifunctional fluidized bed, start the blower, and push and suspend the glass fibers through the blower.

[0089] Blower blowing speed is 60m 3 / h, the jet pressure is 0.5MPa, the air inlet temperature is 100°C, and the air outlet temperature is 65°C.

[0090] Step 2: Under the action of a constant flow pump, spray the first resin solution on the glass fibers with a high-pressure spray gun at a spray rate of 2 L / h, and dry for 3.5 hours to obtain the first fibers.

[0091] Before this step, prepare the first resin solution. The preparation process of the first resin solution is: add the acetone that mass percentage is 50% in...

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Abstract

The invention discloses a resin fiber and a preparation method thereof, and belongs to the technical field of well drilling leaking stoppage. According to the resin fiber provided by the embodiment of the invention, a first resin solution and a second resin solution are sequentially sprayed on the surface of a target fiber based on a multifunctional fluidized bed process, so that the resin fiber is obtained. Under the action of the formation temperature of 55-130 DEG C, the phenolic resin and the epoxy resin on the surface of the target fiber react with a curing agent to generate particles which are adhered and mutually cemented to form a consolidated body of a three-dimensional network structure, and the consolidated body is high in consolidation strength, so that the pressure-bearing and plugging capacities of a bridging structure of a plugging material are greatly improved, and the plugging efficiency is improved.

Description

technical field [0001] This application relates to the technical field of drilling lost circulation. In particular, it relates to a resin fiber and a preparation method thereof. Background technique [0002] Lost circulation is a common complex situation in drilling operations. Lost circulation will not only waste drilling time and lose cement slurry, but may also cause well collapse, pipe sticking or blowout accidents if not handled properly. Lost circulation has a great impact on drilling operations. Therefore, when lost circulation occurs, it is necessary to use plugging materials for plugging, and fiber is an important component of plugging materials. [0003] In the related technology, fiber is added to substances such as fruit shells and mica, and then compounded into a plugging material, and the plugging material is pumped into the leakage layer for plugging. [0004] However, in the related art, the fibers are directly compounded with the above-mentioned substances...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/146C03C25/465C03C25/36C03C25/34D06M15/41D06M15/55C09K8/46D06M101/40
CPCC03C25/146C03C25/465C03C25/36C03C25/34D06M15/41D06M15/55C09K8/426C09K8/46D06M2101/40C09K2208/08
Inventor 沈园园王在明朱宽亮李云峰张艺馨许婧
Owner PETROCHINA CO LTD
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