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Polystyrene vinyl propionate and preparation method therefor and application thereof

A technology of polystyrene vinyl propionate and vinyl propionate, which is applied in construction and other fields, can solve the problems of large dosage, unsuitable for oil production, and few types of tracers, and achieve the effect of low dosage and high detection accuracy

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

The existing tracers used in oil fields are all water-soluble tracers, and the types of tracers are small and the dosage is large, so they are not suitable for monitoring the oil production of each stage after multi-layer and multi-stage fracturing in horizontal wells

Method used

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  • Polystyrene vinyl propionate and preparation method therefor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a method for preparing polystyrene vinyl propionate, which includes the following steps:

[0029] a. Dissolve 0.4g of vinyl bis-stearic acid amide in 50g of hot water, and raise the temperature to 65°C for 30 minutes to obtain an aqueous solution of vinyl bis-stearic acid amide;

[0030] b. Slowly add 45g of vinyl propionate, 5g of styrene and 0.6g of benzoyl peroxide to the aqueous solution of vinyl bisstearamide at a speed of 5-10 drops / min. The addition is complete. After reacting for 10 hours, the temperature is lowered to room temperature and the material is discharged to obtain polystyrene vinyl propionate with a particle size of 0.425mm-0.850mm (20 mesh-40 mesh).

Embodiment 2

[0032] This embodiment provides a method for preparing polystyrene vinyl propionate, which includes the following steps:

[0033] a. Dissolve 0.5 g of vinyl bis stearamide in 55 g of hot water, and raise the temperature to 65°C for 30 minutes to obtain an aqueous solution of vinyl bis stearamide;

[0034] b. Then slowly drop a mixed solution of 40g vinyl propionate, 4.5g styrene and 0.5g benzoyl peroxide into the aqueous solution of vinyl bisstearamide at a speed of 5-10 drops / min, and add dropwise After completion of the reaction for 10 hours, the temperature is lowered to room temperature and the material is discharged to obtain polystyrene vinyl propionate with a particle size of 0.300mm-0.600mm (30 mesh-50 mesh).

Embodiment 3

[0036] This embodiment provides a method for preparing polystyrene vinyl propionate, which includes the following steps:

[0037] a. Dissolve 0.6g of vinyl bisstearic acid amide in 60g of hot water, and raise the temperature to 65°C for 30 minutes to obtain an aqueous solution of vinyl stearic acid amide;

[0038] b. Slowly add a mixed solution of 35g vinyl propionate, 4g styrene and 0.4g benzoyl peroxide to the aqueous solution of vinyl bisstearamide at a speed of 5-10 drops / min, and the addition is complete. After reacting for 10 hours, the temperature is lowered to room temperature and the material is discharged to obtain polystyrene vinyl propionate, the particle size of which is 0.212mm-0.300mm (50 mesh-70 mesh).

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Abstract

The invention provides polystyrene ethyl butenoate and a preparation method therefor and application thereof. The preparation method comprises the step of carrying out polymerization reaction on styrene and vinyl propionate, which serve as reaction monomers, in the presence of vinyl bisstearamide and benzoyl peroxide in a manner of taking water as a dispersion medium, thereby obtaining the polystyrene vinyl propionate. The invention also provides the polystyrene vinyl propionate prepared by the preparation method, application of the polystyrene vinyl propionate in preparation of tracers for monitoring oil-producing profiles of horizontal wells and the polystyrene vinyl propionate containing tracers for monitoring the oil-producing profiles of the horizontal wells. The polystyrene vinyl propionate provided by the invention can be completely dissolved in crude oil, and by using the polystyrene vinyl propionate to monitor the oil-producing situation of each segment after multistage fracturing of the horizontal wells, the aims of analyzing the oil-producing situation of each segment and drawing the liquid oil producing profile of each segment can be achieved.

Description

Technical field [0001] The invention relates to a polystyrene vinyl propionate and a preparation method and application thereof, and belongs to the technical field of petroleum exploration and development. Background technique [0002] At present, in the process of oilfield exploration and development, horizontal wells are mostly used in exploratory wells, and multi-layer and multi-stage fracturing is the first choice for formation reconstruction. However, in the process of layer selection, there is no pertinence, and the selection of stratification is 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 methods such as microseismic method and electric potential method, and then the flowback situation can be used to understand whether there is industrial oil flow in the reservoir. There is no effective m...

Claims

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Application Information

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IPC IPC(8): C08F218/10C08F212/08E21B47/11
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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