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An experimental device for simulating the solubility and injectability of polymers

An experimental device and injection technology, which can be used in measurement devices, instruments, scientific instruments, etc., and can solve problems such as poor polymer flooding and injection effect.

Active Publication Date: 2019-01-25
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an experimental device for simulating the degree of polymer solubility and injectability, so as to solve the problem of poor on-site injection effect of polymer flooding in offshore oilfields

Method used

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  • An experimental device for simulating the solubility and injectability of polymers
  • An experimental device for simulating the solubility and injectability of polymers
  • An experimental device for simulating the solubility and injectability of polymers

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Embodiment Construction

[0017] The specific implementation of the present invention will be further described below in conjunction with the examples, which does not limit the present invention to the scope of the described examples.

[0018] Such as Figure 1 to 3 As shown, an experimental device for simulating the degree of polymer dissolution and injectability includes a cavity with an outer square and an inner circle, a pressure sensing system 4, a PC machine 5, and a shearing device. The connected liquid inlet channel 1, the spherical cavity 2, the liquid outlet channel 3, the shearing device is installed in the spherical cavity 2, and the outlet channel 3 is provided with a filter cake 6, which is determined by the diameter A round cake made by winding and pressing a 1mm thin stainless steel tube has stronger pressure resistance than ordinary filter membranes. The pressure sensing system 4 has a pressure collection connector, and the pressure sensing system 4 is installed outside On the upper end ...

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Abstract

The invention discloses a device for simulating polymer dissolution degree and injection experiments. The device comprises a cavity with a square outside and a circular inside, a pressure sensing system, a PC and a shearing device, wherein the cavity is provided with a liquid inlet channel, a spherical cavity and a liquid discharge channel which are sequentially communicated, the shearing device is mounted in the spherical cavity, filter screen cake is arranged in the liquid discharge channel, the pressure sensing system is provided with a pressure collecting connector, the pressure sensing system is mounted on the upper end face of the cavity, and the pressure sensing system, the PC and the shearing device are sequentially connected. The device has the advantages that the situation that when a polymer crosslinking body exists and is blocked and retained in the cavity by the filter screen, pressure rises, flowing is stopped, corresponding data collected by the pressure sensor is transmitted to the shearing device for shearing, the solution structure is destroyed greatly by the high-speed shearing, polymer solution viscosity is lowered, the solution passes the filter screen in a small volume manner, and the polymer solution entering a core does not block the core is simulated.

Description

Technical field [0001] The invention relates to an experimental device for simulating polymer solubility and injectability, and belongs to the technical field of petroleum industry equipment. Background technique [0002] The recovery rate of Suizhong 36-1 oilfield after early polymer injection increased by 7% compared with conventional water flooding, which marked the great success of the application of polymer flooding early polymer injection technology in offshore oilfields. However, in the entire supporting technical process, many polymer injection wells have high injection pressure, and within a certain time frame, acid fracturing and plugging removal construction measures will be adopted to ensure the injection of polymer solution. Sampling and analysis were taken on site; the results showed that there were still some uneven polymer blends during the polymer preparation process, and the scale content in the formation over 50% was polymer cross-linked. The on-site filter dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N33/00
Inventor 施雷庭朱诗杰叶仲斌张洪王玉唐晓旭姜文卷杨彬刘猛肖胜平
Owner SOUTHWEST PETROLEUM UNIV
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