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Adjustable and visual self-supporting fracturing technology study and experiment device applicable to large displacement

A technology for process research and experimental device, applied in the field of large-displacement adjustable visual self-supporting fracturing process research experimental device

Inactive Publication Date: 2020-02-21
DAGANG OIL FIELD GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] But, also do not have a kind of experimental device at present, it can solve above technical problem

Method used

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  • Adjustable and visual self-supporting fracturing technology study and experiment device applicable to large displacement
  • Adjustable and visual self-supporting fracturing technology study and experiment device applicable to large displacement
  • Adjustable and visual self-supporting fracturing technology study and experiment device applicable to large displacement

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Embodiment Construction

[0106] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0107] First of all, it needs to be explained that in self-supporting fracturing construction, the key to making the formed self-supporting fractures achieve high conductivity is to allow the self-supporting fracturing fluid to form a stable and effective support, while the self-supporting fracturing fluid The distribution of the flow form of the system determines the distribution characteristics of the self-supporting solid phase after the phase transition. Therefore, the study of the flow distribution of the self-fracturing fluid system under different liquid formulations and different construction parameters is helpful for optimizing the self-supporting fracturing fluid formulation and self-supporting fracturing. It is necessary to support...

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Abstract

The invention discloses an adjustable and visual self-supporting fracturing technology study and experiment device applicable to large displacement. The device comprises a visual flowing simulation unit, a visual clamping temperature control unit, a liquid supply unit, a pressure control and flow control unit and an image collection unit. The visual flowing simulation unit is used for simulating aflowing distribution process and a solidification process of self-supporting fracturing liquid in perforation strips and formation fracture space; the visual clamping temperature control unit is usedfor heating the self-supporting fracturing liquid and channel fracturing liquid in the visual flowing simulation unit to form a self-supporting solid phase; the liquid supply unit is used for outputting the self-supporting fracturing liquid and the channel fracturing liquid to the pressure control and flow control unit; the pressure control and flow control unit is used for providing the self-supporting fracturing liquid and the channel fracturing liquid for the visual flowing simulation unit; and the image collection unit is used for shooting the flowing distribution process and the solidification process of the self-supporting fracturing liquid in the visual flowing simulation unit. By means of the device, under high pump injection pressure and displacement, the flowing and phase changephenomena of a self-supporting fracturing liquid system in the simulated perforation strips and simulated fractures can be visually observed, and then the influence rule of the phenomena is studied.

Description

technical field [0001] The invention relates to the field of petroleum exploitation, in particular to the technical field of oil and gas production enhancement measures, and in particular to a large-displacement adjustable visual self-supporting fracturing process research experimental device. Background technique [0002] At present, in the field of oil exploitation, faced with the technical problems existing in the current volume fracturing technology, the movement distance of quartz sand carried by slick water is limited, the particle size of sand added is extremely small, and continuous operation is usually impossible. At present, a new hydraulic fracturing process has been developed: liquid self-supporting fracturing technology. [0003] For liquid self-supporting fracturing technology, the technical principle is: use immiscible self-supporting fracturing fluid (no solid phase at room temperature, liquid with good flow ability, unique thermal sensitivity, heated to a ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/267E21B47/00E21B47/002
CPCE21B43/267E21B47/00
Inventor 裴宇昕廖兴松周华兴杨欢张天林马龙宁晓颖易博王滨李海霞赵冬华
Owner DAGANG OIL FIELD GRP
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