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

A technology of hydroxypropyl 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 dosage

Active Publication Date: 2017-12-01
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-hydroxypropyl ester and its synthesis method and application

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Experimental program
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Effect test

Embodiment 1

[0031] Dissolve 0.1g of polyethylene glycol (PEG4000 average molecular weight 3600-4400) into 55g of hot water, raise the temperature to 75°C for 30min, slowly add 40g of 2-hydroxypropyl acrylate, 4g of styrene and 0.9g of azo The mixed solution of diisobutyronitrile was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged. Particles with a particle diameter of 0.425 mm-0.850 mm (20 mesh-40 mesh) were obtained.

Embodiment 2

[0033] Dissolve 0.15g of polyethylene glycol (PEG4000 average molecular weight 3600-4400) into 60g of hot water, raise the temperature to 75°C for 30min, slowly add 35g of 2-hydroxypropyl acrylate, 3.5g of styrene and 0.8g of The mixed solution of azodiisobutyronitrile was reacted for 8 hours after the dropwise addition was completed, cooled to room temperature and discharged. Particles with a particle diameter of 0.425 mm-0.212 mm (40 mesh-70 mesh) were obtained.

Embodiment 3

[0035] Dissolve 0.2g of polyethylene glycol (PEG4000 average molecular weight 3600-4400) into 65g of hot water, raise the temperature to 75°C for 30min, slowly add 30g of 2-hydroxypropyl acrylate, 3g of styrene and 0.6g of azo The mixed solution of diisobutyronitrile was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged. Particles with a particle diameter of 0.212 mm-0.090 mm (70 mesh-170 mesh) were obtained.

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Abstract

The invention provides polystyrene acrylic acid-2-hydroxyl propyl ester and a synthetic method therefor and application thereof. The polystyrene acrylic acid-2-hydroxyl propyl ester is prepared by virtue of the method comprising the following step: by taking acrylic acid-2-hydroxyl propyl ester and polystyrene as reaction monomers, carrying out suspended polymerization reaction by taking water as a dispersing medium in the presence of a dispersant polyethylene glycol and an initiator azodiisobutyronitrile. The polystyrene acrylic acid-2-hydroxyl propyl ester provided by the invention has the advantages that the test result shows that the polystyrene acrylic acid-2-hydroxyl propyl ester prepared by the synthetic method can be fully dissolved in crude oil; the concentration of the polystyrene acrylic acid-2-hydroxyl propyl ester can be accurately measured by virtue of a gas chromatograph-mass spectrometer; the dosage is small; and the demand on monitoring an oil producing profile of a horizontal well is satisfied.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, in particular to a polystyrene acrylate-2-hydroxypropyl ester 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/28C08F212/08E21B47/11
Inventor 郑猛张洪君王浩闫峰徐厚英李佳孙倩茹董婉
Owner PETROCHINA CO LTD
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