Self-polymerized consolidated pressure-resistant high-permeability temperature-resistant sand control agent

A technology of sand control agent and high permeability, which is applied in the compound of group 4/14 elements of the periodic table, the composition of drilling holes, chemical instruments and methods, etc., and can solve the waterproof performance, high temperature resistance and compressive strength performance of sand control agent Insufficient, difficult to apply to shale gas wells with high temperature and high pressure, etc., to achieve the effect of enhanced hydrophobic barrier effect, excellent mechanical properties, and delayed infiltration process

Active Publication Date: 2020-06-19
BEIJING GEPETTO OIL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem that the existing sand control agent has insufficient waterproof performance, high temperature resistance and compressive strength, is only suitable for sand control operations in medium and low temperature reservoirs, and is difficult to apply to high temperature and high pressure in shale gas wells, and provides a self-polymerizing Consolidated anti-compressive high-permeability and temperature-resistant sand control agent

Method used

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  • Self-polymerized consolidated pressure-resistant high-permeability temperature-resistant sand control agent
  • Self-polymerized consolidated pressure-resistant high-permeability temperature-resistant sand control agent
  • Self-polymerized consolidated pressure-resistant high-permeability temperature-resistant sand control agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of modified epoxy resin is as follows:

[0028] Add 15.0g of epoxy resin E51, 5.0g of dimethoxybis(pentafluorophenyl)silane, 1.0g of dibutyltin dilaurate and 50.0g of toluene in sequence in the three-necked flask, and set the reaction temperature of the system at 85-90°C , reacted under stirring conditions for 8 hours, and after the reaction was completed, the temperature was lowered and toluene and unreacted dimethoxybis(pentafluorophenyl)silane were removed to obtain a modified epoxy resin.

[0029] In the above preparation method, the hydroxyl group in the epoxy resin E51 and the alkoxy group in the dimethoxybis(pentafluorophenyl)silane condense to form a three-dimensional network structure organic polymer condensate, the chemical reaction equation as follows:

[0030]

[0031] In the formula, m takes an integer in the range of 1-4, and n=2.

[0032] Carry out infrared spectrogram analysis to epoxy resin E51 before and after modification, ...

Embodiment 2

[0034] A kind of self-consolidation anti-compression high-permeability and temperature-resistant sand control agent, the specific composition is: the modified epoxy resin prepared in Example 1 40%, cyclohexanone 40%, γ-glycidyl ether oxypropyl trimethoxysilane 6%, polyoxyethylene sorbitan monooleate 8%, and m-phenylenediamine 6%, mix all the components evenly to obtain the sand control agent solidification liquid.

Embodiment 3

[0036] A kind of self-consolidation anti-compression high-permeability and temperature-resistant sand control agent, the specific composition is: the modified epoxy resin prepared in Example 1 40%, cyclohexanone 45%, γ-glycidyl ether oxypropyl trimethoxysilane 5%, polyoxyethylene sorbitan monooleate 5% and m-phenylenediamine 5%. Mix all the components evenly to obtain the sand control agent solidified liquid.

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Abstract

The invention discloses a self-polymerized consolidated pressure-resistant high-permeability temperature-resistant sand control agent. The sand control agent comprises the following components in percentage by mass: 35-40% of modified epoxy resin, 40-45% of an organic solvent, 5-7% of a coupling agent, 5-8% of an emulsifier and 5-6% of a curing agent. A preparation method of the modified epoxy resin comprises the following steps: reacting dimethoxybis(pentafluorophenyl)silane with epoxy resin in a solvent toluene, carrying out a stirring reaction for 8 hours at a reaction temperature of 85-90DEG C with dibutyltin dilaurate as a catalyst, and after the reaction is finished, carrying out cooling and removing toluene and unreacted dimethoxybis(pentafluorophenyl)silane to obtain the modifiedepoxy resin. The sand control agent is suitable for sand control and sand consolidation of high-temperature and high-pressure wells, is good in waterproofness, excellent in high-temperature resistanceand scouring resistance, high in compressive strength and excellent in permeability, can be injected into a stratum through an original production tubular column or in a fracturing later-period tailing mode, and plays a role in sand control or sand consolidation.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a self-aggregation, consolidation, compression, high permeability, temperature and sand control agent. Background technique [0002] The problem of sand production has always restricted the production quality of oil and gas wells. The problem of sand production not only seriously affects the service life of oil wells, but also wears and corrodes surface pipelines, and at the same time leads to the reduction of oil well production or the occurrence of production shutdown accidents. Therefore, sand control for sand production wells is the primary measure to ensure the normal production of oilfields. [0003] At present, oilfields in most areas of my country have entered the development stage of ultra-high water cut period, and the sand production of oil wells is becoming more and more complicated and diversified. However, the currently implemented sand control mea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/575C08G59/32C07F7/18
CPCC09K8/5755C09K8/5756C08G59/3281C07F7/188
Inventor 徐太平李栓袁发明
Owner BEIJING GEPETTO OIL TECH
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