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A kind of polystyrene vinyl benzoate and its synthetic method and application

A technology of polystyrene vinyl benzoate and vinyl benzoate, applied in the field of polystyrene vinyl benzoate and its synthesis, can solve the problems of no effective monitoring method for oil production, etc. Achieve the effect of using less

Active Publication Date: 2018-07-10
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 vinyl benzoate and its synthetic method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Dissolve 0.1g of polyethylene glycol (PEG4000 average molecular weight 3600-4400) into 50g of hot water, raise the temperature to 65°C for 30min, slowly add 45g of vinyl benzoate, 4.5g 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.

Embodiment 2

[0033] Dissolve 0.15g of polyethylene glycol (PEG4000 average molecular weight 3600-4400) into 60g of hot water, raise the temperature to 65°C for 30min, slowly add 35g of vinyl benzoate, 3.5g of styrene and 0.65g of azo The mixed solution of diisobutyronitrile was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged.

Embodiment 3

[0035] Dissolve 0.2g of polyethylene glycol (PEG4000 average molecular weight 3600-4400) into 70g of hot water, raise the temperature to 65°C for 30min, slowly add 25g of vinyl benzoate, 2.5g of styrene and 0.35g of azo The mixed solution of diisobutyronitrile 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 vinyl benzoate and its synthesis method and application. Polystyrene vinyl benzoate of the present invention is prepared by the method comprising the following steps: take vinyl benzoate and styrene as reaction monomers, in dispersant polyethylene glycol and initiator azobisisobutyl In the presence of nitrile, the suspension polymerization was carried out with water as the dispersion medium. Polystyrene vinyl benzoate of the present invention has following advantage: test result shows that the polystyrene vinyl benzoate that adopts synthetic method of the present invention to prepare can be dissolved in crude oil completely, can Its concentration can be accurately measured, and the dosage is small, which meets the needs of monitoring the oil production profile of horizontal wells.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, in particular to a polystyrene vinyl benzoate 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 are no ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/14C08F212/08E21B47/11
Inventor 郑猛张洪君王浩闫峰梁凌熏张群刘晶晶柳燕丽
Owner PETROCHINA CO LTD
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