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Polystyrene ethyl isovalerate, and synthetic method and application thereof

A technology of polystyrene ethyl acrylate and ethyl acrylate, 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: 2015-12-23
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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  • Polystyrene ethyl isovalerate, and synthetic method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Dissolve 0.25g 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 ethyl methacrylate, 4g of styrene and 0.9g of styrene peroxide dropwise The mixed solution of formyl was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged.

Embodiment 2

[0033] Dissolve 0.35g 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 ethyl methacrylate, 3.5g of styrene and 0.7g of peroxide The mixed solution of benzoyl was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged.

Embodiment 3

[0035] Dissolve 0.45g 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 ethyl methacrylate, 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 ethyl isovalerate, and a synthetic method and an application thereof. The polystyrene ethyl isovalerate is prepared through a suspension polymerization reaction of ethyl isovalerate and styrene as reaction monomers with water as a dispersion medium in the presence of a dispersant polyvinyl alcohol and an initiator benzoyl peroxide. A test result shows that the polystyrene ethyl isovalerate prepared through the synthetic method can be completely dissolved in crude oil, the concentration of polystyrene ethyl isovalerate can be accurately determined through a gas chromatograph-mass spectrometer, the use amount is small, and horizontal well oil production profile monitoring needs are met.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, in particular to a polystyrene ethyl methacrylate 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 n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/16C08F212/08E21B47/11
Inventor 郑猛张洪君闫峰徐厚英李佳孙倩茹董婉贾紫薇
Owner PETROCHINA CO LTD
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