Maturation device and polymer preparation system for chemical flooding oil recovery

A chemical flooding and polymer technology, applied in the direction of chemical/physical processes, chemical instruments and methods, mixers, etc., can solve the problems of reducing the viscosity of polymer solutions, clogging of screens or porous materials, shear degradation, etc., to achieve improved Dissolution speed, reduced investment and floor area, and the effect of preventing shear degradation

Active Publication Date: 2018-09-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is easy to cause blockage of the screen or porous material, and it is easy to cause the shear degradation of the polymer molecular chain when the pressure difference is too large or the flow rate is too fast, which reduces the viscosity of the polymer solution.

Method used

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  • Maturation device and polymer preparation system for chemical flooding oil recovery
  • Maturation device and polymer preparation system for chemical flooding oil recovery
  • Maturation device and polymer preparation system for chemical flooding oil recovery

Examples

Experimental program
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Effect test

Embodiment 1

[0053] see figure 1 , the present invention provides a curing device 10 for chemical flooding oil recovery, the curing device 10 for chemical flooding oil recovery has a tank body 101, the tank body 101 is vertically arranged, and the tank body 101 is equipped with There is a support plate 102, the support plate 102 is horizontally arranged in the tank body 101, the periphery of the support plate 102 is welded and fixed with the inner wall of the tank body 101, and the interior of the tank body 101 is divided into The upper cavity 103 and the lower cavity 104; the position of the support plate 102 in the tank body 101 is relatively close to the bottom of the tank body 101, so that the upper cavity 103 has a larger space, and the lower cavity 104 has a larger space. smaller. The upper cavity 103 is the main working cavity. The upper cavity 103 is provided with particle fillers 105 and a first agitator 106. The particle fillers 105 fill most of the space in the upper cavity 10...

Embodiment 2

[0060] see figure 2 As shown, the present invention also provides a polymer preparation system 100 for chemical flooding oil recovery, the polymer preparation system 100 for chemical flooding oil recovery includes the aging method for chemical flooding oil recovery described in Embodiment 1 The device 10, wherein the liquid inlet 1011 of the curing device 10 is connected to the polymer dispersing and dissolving device 20 through a pipeline; the liquid outlet 1012 of the curing device 10 is connected to the liquid inlet of the screw pump 30 through a pipeline, and the screw The liquid outlet of the pump 30 is connected to the stirring and dissolving device 40 through a pipeline.

[0061] Since the polymer preparation system 100 adopts the curing device 10 described in the first embodiment, the stirring effect is improved, and the curing speed of the polymer is accelerated. It can be used for a certain period of time after aging in the tank. The structure is simple and the pr...

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Abstract

The invention relates to a curing device for chemical flooding oil recovery, which has a tank body, and a support plate is arranged in the tank body, and the support plate divides the inside of the tank body into an upper cavity and a lower cavity; particle filler is arranged in the upper cavity and a first agitator, the first agitator is used to stir the mixture and the granular filler entering the upper cavity; a plurality of through holes are arranged on the support plate, and the diameter of the through holes is smaller than the particle diameter of the granular filler. The curing device can reduce "fish eyes" and air bubbles, shorten the curing time of the polymer, and prevent the polymer molecular chain from shearing and degrading. The present invention also relates to a polymer preparation system using the above-mentioned curing device. The polymer preparation system has a compact process flow and reduces ground equipment investment and floor space.

Description

technical field [0001] The invention relates to a complete set of equipment for preparing ground technology for tertiary oil recovery polymers in oilfields, in particular to a curing device and a polymer preparation system for chemical flooding oil recovery. Background technique [0002] Polymer flooding technology is currently one of the most important technologies for enhancing oil recovery. Commonly used polymers are polyacrylamide and sodium polyacrylate. The distribution and injection process of polymer flooding technology is: polymer dispersion and dissolution - polymer maturation - external transport of matured liquid - injection into the formation. Among them, polymer dispersion and dissolution and polymer aging are the key links in the dispensing process, which directly affect the preparation effect of the polymer solution. Polymer dispersion and dissolution is to disperse and mix dry polymer powder in a certain amount of water, and fully wet the polymer dry powde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F1/00B01F13/00
CPCB01F21/00B01F33/251B01F2101/2805
Inventor 柳燕丽匡韶华张群刘晶晶黄鹤楠梁凌熏曾涛
Owner PETROCHINA CO LTD
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