Self-polymerized consolidated pressure-resistant permeation-increasing temperature-resistant sand preventing agent

A sand control agent and temperature-resistant technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of affecting the sand control and sand-fixing effect, poor temperature resistance of the consolidated body, difficulty in field operation, etc., so as to prolong the field operation. The effect of improving time and curing strength and increasing the amount of carbon

Active Publication Date: 2020-01-14
SICHUAN JIEBEITONG ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional chemical sand control agent is only suitable for sand control operations in medium and low temperature reservoirs due to its low curing temperature and fast curing speed, and the resulting consolidated body has poor temperature resistance and low compressive strength.
The use of acid anhydride sand curing agent can improve the temperature resistance of the resin. However, due to the high melti

Method used

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  • Self-polymerized consolidated pressure-resistant permeation-increasing temperature-resistant sand preventing agent
  • Self-polymerized consolidated pressure-resistant permeation-increasing temperature-resistant sand preventing agent
  • Self-polymerized consolidated pressure-resistant permeation-increasing temperature-resistant sand preventing agent

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] The preparation of a sand control agent is as follows:

[0026] At room temperature, epoxy resin E-44, epoxy resin E-51, phenol resin F-51, polyvinyl pyrrolidone K30 are mixed according to the mass ratio of epoxy resin E-44: epoxy resin E-51: phenol resin F- 51: Polyvinylpyrrolidone K30=3:3:3:1 is mixed to form a resin compound system; p-nitrobenzoic anhydride and tetrachlorophthalic anhydride are mixed according to a mass ratio of 1:1 to form a curing agent; then The resin compound system, cyclohexanone, coupling agent N-aminoethyl-3-aminopropylmethyldimethoxysilane, emulsifier, filler, and curing agent are in a mass ratio of 30:47:5:8: 5:5 is mixed to prepare a liquid sand control agent. Among them, the emulsifier is a compound of styrene-sodium maleate and polyoxyethylene sorbitan monooleate in a mass ratio of 1:1; the filler is high-temperature resistant multi-mineral fine powder and phenolic fiber, according to the The compounding agent with a mass...

Example Embodiment

[0036] Example 2

[0037] The preparation of a sand control agent is as follows:

[0038] At room temperature, epoxy resin E-44, epoxy resin E-51, phenol resin F-51, polyvinyl pyrrolidone K30 are mixed according to the mass ratio of epoxy resin E-44: epoxy resin E-51: phenol resin F- 51: Polyvinylpyrrolidone K30=2:3:4:1 is mixed to prepare a resin compound system; p-nitrobenzoic anhydride and tetrachlorophthalic anhydride are mixed according to a mass ratio of 1:1 to prepare a curing agent; then The resin compound system, cyclohexanone, coupling agent N-aminoethyl-3-aminopropylmethyldimethoxysilane, emulsifier, filler, and curing agent are in a mass ratio of 40:40:6:5: 5:4 is mixed to prepare a liquid sand control agent. Among them, the emulsifier is a compound of styrene-sodium maleate and polyoxyethylene sorbitan monooleate in a mass ratio of 1:1; the filler is high-temperature resistant multi-mineral fine powder and phenolic fiber, according to the The compounding agent with ...

Example Embodiment

[0048] Example 3

[0049] The preparation of a sand control agent is as follows:

[0050] At room temperature, epoxy resin E-44, epoxy resin E-51, phenol resin F-51, polyvinyl pyrrolidone K30 are mixed according to the mass ratio of epoxy resin E-44: epoxy resin E-51: phenol resin F- 51: Polyvinylpyrrolidone K30=30:25:40:5 is mixed to prepare a resin compound system; p-nitrobenzoic anhydride and tetrachlorophthalic anhydride are mixed according to a mass ratio of 1:1 to prepare a curing agent; then The resin compound system, cyclohexanone, coupling agent N-aminoethyl-3-aminopropylmethyldimethoxysilane, emulsifier, filler, and curing agent are in a mass ratio of 30:49:7:5: 5:4 is mixed to prepare a liquid sand control agent. Among them, the emulsifier is a compound of styrene-sodium maleate and polyoxyethylene sorbitan monooleate in a mass ratio of 1:1; the filler is high-temperature resistant multi-mineral fine powder and phenolic fiber, according to the The compounding agent wi...

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PUM

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Abstract

The invention discloses a self-polymerized consolidated pressure-resistant permeation-increasing temperature-resistant sand preventing agent. The self-polymerized consolidated pressure-resistant permeation-increasing temperature-resistant sand preventing agent comprises the following components, in percentage by mass: 30-40% of a resin compounding system; 40-50% of an organic solvent; 5-7% of a coupling agent; 5-8% of a filler; 4 to 5% of a curing agent, and 5 to 8% of an emulsifier; wherein the sum of the mass percentages of the components is 100%; the curing agent is p-nitrobenzoic anhydrideand tetrachlorophthalic anhydride which are mixed in equal mass; the filler is high-temperature-resistant multi-mineral fine powder and phenolic fiber; and the high-temperature-resistant multi-mineral fine powder is a mixture of magnesium oxide, aluminum oxide and silicon oxide; the resin compounding system is formed by compounding epoxy resin E-44, epoxy resin E-51, phenolic resin F-51 and polyvinylpyrrolidone K30. The sand preventing agent is mainly used for chemical sand control of high-temperature and high-pressure wells, can be injected into stratums without moving tubular columns, andachieve the purposes of sand control and sand consolidation.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a self-agglomeration, consolidation, pressure-resistant, permeability-increasing, temperature-resistant and sand-controlling agent for chemical sand control in high-temperature and high-pressure wells. Background technique [0002] In oil extraction, sand production from oil and water wells is extremely harmful. If sand buries oil, gas, and water layers, the production of oil and gas wells will be stopped, and the injection of water wells will be stopped. Downhole operations, equipment maintenance or replacement will be frequent, and production costs will increase. If a large amount of sand is produced, the formation will be seriously deficient, and cavities will easily form outside the casing of the reservoir, causing formation collapse, casing rupture and deformation, and even the well being scrapped. Therefore, sand control for sand production wells is th...

Claims

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Application Information

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IPC IPC(8): C09K8/575C08G59/42
CPCC08G59/423C09K8/5756
Inventor 曾斌徐太平李栓周京伟张涛张书荣袁发明
Owner SICHUAN JIEBEITONG ENERGY TECH CO LTD
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