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A kind of polystyrene acrylic acid-2-hydroxyethyl ester and its synthesis method and application

A technology of hydroxyethyl ester and acrylic acid, 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 acrylic acid-2-hydroxyethyl ester and its synthesis method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 1g of polyvinyl alcohol (average degree of polymerization 2400-2500) in 55g of hot water, raise the temperature to 75°C for 30min, slowly add 40g of 2-hydroxyethyl acrylate, 4.5g of styrene and 0.9g of peroxide The mixed solution of benzoyl was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged.

Embodiment 2

[0032] Dissolve 1.5g of polyvinyl alcohol (average degree of polymerization 2400-2500) into 65g of hot water, raise the temperature to 75°C for 30min, slowly add 30g of 2-hydroxyethyl acrylate, 4g of styrene and 0.6g of peroxide The mixed solution of benzoyl was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged.

Embodiment 3

[0034] Dissolve 2g of polyvinyl alcohol (average degree of polymerization 2400-2500) into 70g of hot water, raise the temperature to 75°C for 30min, slowly add 25g of 2-hydroxyethyl acrylate, 3g of styrene and 0.5g of styrene peroxide dropwise The mixed solution of formyl was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged.

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Abstract

The invention provides a polystyrene acrylate-2-hydroxyethyl ester and its synthesis method and application. Polystyrene-2-hydroxyethyl acrylate of the present invention is prepared by the method comprising the following steps: with 2-hydroxyethyl acrylate and styrene as reaction monomers, in dispersant polyvinyl alcohol and initiator benzyl peroxide Suspension polymerization was carried out with water as the dispersion medium in the presence of acyl. The polystyrene acrylate-2-hydroxyethyl acrylate of the present invention has the following advantages: test results show that the polystyrene acrylate-2-hydroxyethyl acrylate produced by the synthetic method of the present invention can be completely dissolved in crude oil, and the The instrument can accurately measure its concentration, and the dosage is small, which meets the needs of horizontal well oil production profile monitoring.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, in particular to a polystyrene-2-hydroxyethyl acrylate and its synthesis method and application. Background technique [0002] At present, in the process of oilfield exploration and development, horizontal wells are mostly used for exploration wells, and multi-layer and multi-stage fracturing is the preferred process for formation stimulation. However, in the process of layer selection, there is no pertinence, and layers are selected based on experience. Therefore, It is particularly important for data collection and analysis of fracturing effects after fracturing. In the prior art, the development of fractures after fracturing can be monitored and analyzed by microseismic method, potential method, etc., and whether there is industrial oil flow in the reservoir can be known through the flowback situation, but for the oil production of each stage after staged fracturing There ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/28C08F212/08E21B47/11
Inventor 郑猛王浩闫峰解宇宁刘强管紫君戴倩倩杨丰铭
Owner PETROCHINA CO LTD
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