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Polystyrene methyl methacrylate and synthetic method therefor and application thereof

A technology of polystyrene methyl methacrylate and methyl methacrylate, 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: 2015-11-25
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 methyl methacrylate and synthetic method therefor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 0.5g of polyvinyl alcohol (average degree of polymerization 2400-2500) into 50g of hot water, raise the temperature to 65°C for 30min, slowly add 45g of methyl methacrylate, 4.5g of styrene and 1.5g of azobisiso The mixed solution of butyronitrile was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged.

Embodiment 2

[0032] Dissolve 1g of polyvinyl alcohol (average degree of polymerization 2400-2500) in 55g of hot water, raise the temperature to 65°C for 30min, slowly add 40g of methyl methacrylate, 4g of styrene and 1g of azobisisobutyronitrile dropwise Mix the solution, react for 8 hours after the dropwise addition, cool down to room temperature and discharge.

Embodiment 3

[0034] Dissolve 1.5g of polyvinyl alcohol (average degree of polymerization 2400-2500) into 60g of hot water, raise the temperature to 65°C for 30min, slowly add 35g of methyl methacrylate, 3.5g of styrene and 0.5g of azobisiso The mixed solution of butyronitrile was reacted for 8 hours after the dropwise addition, cooled to room temperature and discharged.

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PUM

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Abstract

The invention provides polystyrene methyl methacrylate and a synthetic method therefor and application thereof. The polystyrene methyl methacrylate is prepared by virtue of the method comprising the following step: by taking methyl methacrylate and polystyrene as reaction monomers, carrying out suspended polymerization reaction by taking water as a dispersing medium in the presence of a dispersant polyvinyl alcohol and an initiator azodiisobutyronitrile. The polystyrene methyl methacrylate provided by the invention has the advantages that the test result shows that the polystyrene methyl methacrylate prepared by the synthetic method can be fully dissolved in crude oil; the concentration of the polystyrene methyl methacrylate 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 methyl 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F212/08E21B47/11
Inventor 郑猛张洪君王浩闫峰许占双李瑞柳荣伟陈小凯
Owner PETROCHINA CO LTD
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