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A kind of polystyrene acrylate-2-ethylhexyl ester and its synthesis method and application

A technology of polystyrene acrylic acid and ethylhexyl ester, which is applied in construction and other fields, can solve the problem that there is no effective monitoring method for oil production, and achieve the effect of less consumption

Active Publication Date: 2018-02-02
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of fracturing stages and the differences in physical properties in long horizontal sections, the fluid drainage after each stage of fracturing is of great significance for the evaluation of fracturing effects and the deployment of well locations in the next step, but for each stage after staged fracturing There is no effective monitoring method for oil production

Method used

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  • A kind of polystyrene acrylate-2-ethylhexyl ester and its synthesis method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 0.1g of polyvinyl alcohol (average degree of polymerization is 2400-2500) in 55g of hot water, heat up to 85°C for 30min, slowly add 40g of 2-ethylhexyl acrylate, 4.5g of styrene and 0.9g The mixed solution of benzoyl peroxide was added dropwise and reacted for 8 hours, then cooled to room temperature and discharged.

Embodiment 2

[0032] Dissolve 0.15g polyvinyl alcohol (average degree of polymerization is 2400-2500) in 65g hot water, heat up to 85°C for 30min, slowly add 30g 2-ethylhexyl acrylate, 4g styrene and 0.5g The mixed solution of benzoyl oxide was added dropwise and reacted for 8 hours, then cooled to room temperature and discharged.

Embodiment 3

[0034] Dissolve 0.2g of polyvinyl alcohol (average degree of polymerization is 2400-2500) in 75g of hot water, heat up to 85°C for 30min, slowly add 20g of 2-ethylhexyl acrylate, 3g of styrene and 0.2g The mixed solution of benzoyl oxide was added dropwise and reacted for 8 hours, then cooled to room temperature and discharged.

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Abstract

The invention provides a polystyrene acrylate-2-ethylhexyl ester and its synthesis method and application. The polystyrene acrylate-2-ethylhexyl of the present invention is prepared by the method comprising the following steps: using acrylate-2-ethylhexyl and styrene as reaction monomers, in dispersant polyvinyl alcohol and initiator peroxidation In the presence of benzoyl, the suspension polymerization was carried out with water as the dispersion medium. The polystyrene acrylate-2-ethylhexyl of the present invention has the following advantages: the test result shows that the polystyrene acrylate-2-ethylhexyl that adopts the synthetic method of the present invention to prepare can be dissolved in the crude oil completely, through gaseous The combined instrument can accurately measure its concentration, and the consumption is small, which meets the needs of monitoring the oil production profile of the horizontal well.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, in particular to a polystyrene acrylate-2-ethylhexyl ester and a synthesis method and application thereof. Background technique [0002] At present, in the process of oilfield exploration and development, exploratory wells are mostly horizontal wells, and multi-layer and multi-stage fracturing is the first choice for formation stimulation. However, in the process of layer selection, there is no pertinence. It is particularly important for data collection and analysis of fracturing effect after fracturing. In the prior art, microseismic method, potential method, etc. can be used to monitor and analyze the development of fractures after fracturing, and to know whether there is industrial oil flow in the reservoir through the flowback situation, but for the oil production of each section after staged fracturing. There is no effective monitoring method. [0003] The construction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F212/08E21B47/11
Inventor 郑猛张洪君王浩许占双李瑞柳荣伟陈小凯田庆丰
Owner PETROCHINA CO LTD
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