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Polystyrene dipropyl maleate, preparation method and application thereof

A technology of polystyrene dipropyl butenedioate and dipropyl butenedioate is applied in the field of polystyrene dipropyl butenedioate and its preparation, and can solve the problem of large dosage, unsuitable for oil production, There are few types of tracers, etc., to 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 dipropyl maleate, preparation method and application thereof

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Embodiment 1

[0031] The present embodiment provides a kind of preparation method of polystyrene di-n-propyl maleate, it comprises the following steps:

[0032] a. Dissolve 0.1 g of polyethylene glycol (PEG4000) in 55 g of hot water, raise the temperature to 65° C. and keep the temperature for 30 minutes to obtain an aqueous solution of polyethylene glycol;

[0033] b. Slowly add a mixed solution of 40g di-n-propyl maleate, 4g styrene and 0.9g azobisisobutyronitrile dropwise to the aqueous solution of polyethylene glycol at a rate of 5-10 drops / min , react for 10 hours after the dropwise addition, cool to room temperature and discharge to obtain polystyrene di-n-propyl maleate with a particle size of 0.300mm-0.850mm (20 mesh-50 mesh).

Embodiment 2

[0035] The present embodiment provides a kind of preparation method of polystyrene di-n-propyl maleate, it comprises the following steps:

[0036] a. Dissolve 0.15g of polyethylene glycol (PEG4000) into 60g of hot water, raise the temperature to 65°C and keep the temperature for 30min to obtain an aqueous solution of polyethylene glycol;

[0037] b. Add a mixed solution of 35g di-n-propyl maleate, 3.5g styrene and 0.8g azobisisobutyronitrile dropwise to the aqueous solution of polyethylene glycol at a rate of 5-10 drops / min , reacted for 10 hours after the dropwise addition was completed, cooled to room temperature and discharged to obtain polystyrene di-n-propyl maleate with a particle size of 0.212mm-0.425mm (40 mesh-70 mesh).

Embodiment 3

[0039] The present embodiment provides a kind of preparation method of polystyrene di-n-propyl maleate, it comprises the following steps:

[0040] a. Dissolve 0.2g of polyethylene glycol (PEG4000) in 65g of hot water, raise the temperature to 65°C for 30 minutes, and obtain an aqueous solution of polyethylene glycol;

[0041] b. Add dropwise a mixed solution of 30g di-n-propyl maleate, 3g styrene and 0.6g azobisisobutyronitrile to the aqueous solution of polyethylene glycol at a rate of 5-10 drops / min, After the dropwise addition, react for 10 hours, cool to room temperature and discharge to obtain polystyrene di-n-propyl maleate with a particle size of 0.180mm-0.300mm (50 mesh-80 mesh).

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Abstract

The invention provides polystyrene dipropyl maleate, a preparation method and application thereof. The method comprises the step of performing a polymerization reaction on polystyrene and dipropyl maleate serving as reaction monomers in the presence of polyethylene glycol and azodiisobutyronitrile by using water as a dispersion medium to prepare the polystyrene dipropyl maleate. The invention further provides the polystyrene dipropyl maleate prepared by the preparation method, application of the polystyrene dipropyl maleate in preparation of a tracer for monitoring a horizontal well oil production section and the tracer containing the polystyrene dipropyl maleate for monitoring the horizontal well oil production section. The polystyrene dipropyl maleate can be completely dissolved in crude oil, and can be used for achieving the aim of analyzing the oil production situation of each section and drawing the oil production fluid section of each section when being used for detecting the oil production situation of each section after multi-stage fracturing of the horizontal well.

Description

technical field [0001] The invention relates to a polystyrene butadiene dipropyl ester and a preparation method and application thereof, 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 monit...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F212/08E21B47/11
Inventor 郑猛张洪君王浩闫峰刘恩宏张俊蒋伟亢思丹
Owner PETROCHINA CO LTD
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