An experimental device for visually simulating the flow law of self-supporting fracturing fluid under pressure

An experimental device and fracturing fluid technology, applied in the fields of production fluids, wellbore/well components, buildings, etc., can solve the problems of inability to operate continuously, limited migration distance of carrying quartz sand, and small particle size of sand, and achieve optimization. The formula and construction parameters and process, the effect of simple processing and convenient assembly

Active Publication Date: 2022-04-05
DAGANG OIL FIELD GRP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Facing 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 the continuous operation is usually impossible

Method used

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  • An experimental device for visually simulating the flow law of self-supporting fracturing fluid under pressure
  • An experimental device for visually simulating the flow law of self-supporting fracturing fluid under pressure
  • An experimental device for visually simulating the flow law of self-supporting fracturing fluid under pressure

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specific Embodiment

[0069] The flow process of the self-supporting fracturing fluid system in the experimental device for visually simulating the flow distribution of the self-supporting fracturing fluid under pressure is as follows. First, the self-supporting fracturing fluid and channel fracturing fluid are driven by different nitrogen bottles and liquid irrigation Replaced to the injection end threaded hole 10 on the lower side (the upper threaded hole is sealed by a plug at this time), after the self-supporting fracturing fluid system passes through the inner cavity of the injection end, it passes through the inflow end to simulate the blast hole channel 3 under the action of fluid pressure After entering the conical flow space formed by the upper and lower plexiglass 7, it enters the parallel fracture space after shearing, and then the self-supporting fracturing fluid system quickly flows to the simulated fracture tip channel 5 at the outflow end, and enters the inner cavity of the outflow end...

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Abstract

The invention discloses an experimental device for visually simulating the flow law of self-supporting fracturing fluid with pressure resistance. Bolts, the above components are combined to form a continuous internal flow channel with a resistance to 5MPa liquid pressure. Compared with the prior art, the beneficial effects of the present invention are: (1) According to different experimental parameters, the device can visually observe the distribution of self-supporting fracturing fluid in simulated formation fractures; (2) the uniquely designed By simulating the blasthole and conical flow space, the influence of perforation blasthole and perforation zone on the distribution of self-supporting fracturing fluid can be simulated.

Description

technical field [0001] The invention belongs to the field of petroleum exploitation, in particular to the technical field of oil and gas production stimulation measures, and in particular to an experimental device for pressure-resistant and visual simulation of the flow law of self-supporting fracturing fluid. Background technique [0002] Facing the technical problems existing in the current volume fracturing technology, the slick water carries the quartz sand with a limited migration distance, the particle size of the added sand is extremely small, and the continuous operation is usually impossible. At present, a brand-new hydraulic fracturing process measure-liquid self-supporting fracturing technology has been developed. The technical principle is: use immiscible self-supporting fracturing fluid (no solid phase at room temperature, liquid with good flow ability, unique heat sensitivity, self-supporting solid phase will be generated when heated to a certain temperature) a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/267E21B43/27E21B47/002
CPCE21B43/267E21B43/26E21B47/00
Inventor 裴宇昕李东平廖兴松周华兴季红新李欣王建春马龙宋秀英安宁
Owner DAGANG OIL FIELD GRP
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