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A kind of polystyrene 2-butenoic acid methyl ester and its preparation method and application

A technology of methyl crotonate and polystyrene, used in construction and other directions, can solve the problems of unsuitable oil production, large dosage, and few types of tracers, and achieve the effect of high detection accuracy and low dosage

Active Publication Date: 2017-11-10
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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  • A kind of polystyrene 2-butenoic acid methyl ester and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present embodiment provides a kind of preparation method of polystyrene 2-butenoic acid methyl ester, it comprises the following steps:

[0031] a. Dissolve 0.1g of polyvinyl alcohol (average degree of polymerization is 2400-2500) into 55g of 80°C hot water, keep the temperature constant for 30min to obtain an aqueous solution of polyvinyl alcohol;

[0032] B, add dropwise the mixed solution of the 2-butenoic acid methyl ester of 40g, the styrene of 4.5g and the benzoyl peroxide of 0.6g in the aqueous solution of above-mentioned polyvinyl alcohol with the speed of 5-10 drop / min again, After completion of the dropwise addition, react for 10 h, drop to room temperature and discharge to obtain the polystyrene 2-butenoic acid methyl ester, the particle diameter of the polystyrene 2-butenoic acid methyl ester particle is 0.300mm-0.600mm ( 30 mesh-50 mesh).

Embodiment 2

[0034] The present embodiment provides a kind of preparation method of polystyrene 2-butenoic acid methyl ester, it comprises the following steps:

[0035] a. Dissolve 0.15g of polyvinyl alcohol (average degree of polymerization is 2400-2500) in 65g of hot water at 80°C, keep the temperature for 30 minutes to obtain an aqueous solution of polyvinyl alcohol;

[0036] b. Add dropwise the mixed solution of 30g of methyl 2-butenoate, 4g of styrene and 0.5g of benzoyl peroxide in the aqueous solution of polyvinyl alcohol at a speed of 5-10 drops / min, drop After the addition is completed, react for 10 h, drop to room temperature and discharge to obtain the polystyrene methyl 2-butenoate, the particle diameter of the polystyrene methyl 2-butenoate particles is 0.250mm-0.425mm (40 mesh-60 mesh).

Embodiment 3

[0038] The present embodiment provides a kind of preparation method of polystyrene 2-butenoic acid methyl ester, it comprises the following steps:

[0039] a. Dissolve 0.2 g of polyvinyl alcohol (average degree of polymerization is 2400-2500) in 75 g of hot water at 80° C., keep the temperature for 30 minutes to obtain an aqueous solution of polyvinyl alcohol;

[0040] B, then drop the mixed solution of 2-butenoic acid methyl ester of 20g, 3g of styrene and 0.4g of benzoyl peroxide in the aqueous solution of above-mentioned polyvinyl alcohol with the speed of 5-10 drop / min again, drop After the addition is completed, react for 10 hours, drop to room temperature and discharge to obtain the polystyrene methyl 2-butenoate, the particle diameter of the polystyrene methyl 2-butenoate particles is 0.212mm-0.300mm (50 mesh-70 mesh).

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Abstract

The invention provides a methyl polystyrene 2-crotonate, and a preparation method and an application thereof. The preparation method is characterized in that the methyl polystyrene 2-crotonate is obtained through a polymerization reaction of styrene and 2-methyl crotonate as reaction monomers with water as a solvent in the presence of polyvinyl alcohol and benzoyl peroxide. The invention also provides the methyl polystyrene 2-crotonate prepared through the preparation method, an application of the methyl polystyrene 2-crotonate in preparation of horizontal well oil production profile monitoring tracers, and a horizontal well oil production profile monitoring tracer containing methyl polystyrene 2-crotonate. The methyl polystyrene 2-crotonate can be completely dissolved in crude oil, can be used to monitor the oil production condition in every stage after horizontal well multistage fracturing, and can realize the purposes of analysis of the oil production condition in every stage and drawing of the oil liquid production profile in every stage.

Description

technical field [0001] The invention relates to polystyrene 2-butenoic acid methyl ester and its preparation method and application, belonging 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 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 specificity, and the layers are selected based on experience. Therefore, it is particularly important for data collection and analysis of fracturing effects after fracturing. In the existing technology, it is possible to monitor and analyze the development of fractures after fracturing by means of microseismic method, potential method, etc., and then know whether there is industrial oil flow in the reservoir through the flowback situation. There is no effective monitorin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F212/08E21B47/11
Inventor 郑猛张洪君王浩闫峰周飞何强郭韬张西子
Owner PETROCHINA CO LTD