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Dynamic slit width simulation system and method for slit

A technique for simulating system, slit width

Active Publication Date: 2014-10-29
卢渊 +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

This method is mainly used to simulate the conductivity generated when the fracture closes, and cannot simulate the opening characteristics of formation fractures as the liquid pressure increases

Method used

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  • Dynamic slit width simulation system and method for slit
  • Dynamic slit width simulation system and method for slit
  • Dynamic slit width simulation system and method for slit

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0027] A fracture dynamic fracture width simulation system, comprising a press 5, a press lower plate 4, a press upper plate 3 and a core holder 9, the upper part of the press is coaxially installed with the press lower plate, and the lower plate of the press is Install the upper platen of the press coaxially corresponding to the lower platen on the upper side, install a core holder coaxially on the top of the lower platen between the upper platen of the press and the lower platen of the press, and install a core 8 in the core holder. The front of the device is sequentially connected to the intermediate container 2 and the displacement pump 1 through pipelines, and the back of the core holder is conne...

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Abstract

The invention relates to a dynamic slit width simulation system and method for a slit. The dynamic slit width simulation system comprises a press, a spring disk and a rock core clamp, wherein the rock core clamp is coaxially arranged between an upper pressing plate and a lower pressing plate of the press; a rock core is embedded into the rock core clamp; the front part of the rock core clamp is connected with a middle container and a displacement pump in sequence by pipelines; the rear part of the rock core clamp is connected with a back pressure valve and a liquid meter in sequence through pipelines; the spring disk is coaxially mounted between the rock core clamp and the upper pressing plate of the press; displacement sensors are symmetrically mounted on two sides of the rock core clamp at the bottom of the spring disk; when the pressure of fluid in the rock core is increased, the spring disk and the rock core are compressed to generate certain deformation to expand the slit, and the displacement sensors are used for detecting the width of the slit. The dynamic slit width simulation system can dynamically monitor a change value of the width of the slit between the two rock cores, and is scientific and reasonable in structural design and high in measured data accuracy.

Description

technical field [0001] The invention belongs to the field of petroleum and natural gas engineering, and relates to indoor experimental evaluation of oil and gas field exploitation technology, in particular to a fracture dynamic fracture width simulation system and method. Background technique [0002] In the drilling and fracturing technology of oil and gas reservoirs, the surface high-pressure pump injects working fluid into the formation, and the working fluid with a certain flow pressure forces the natural fractures in the formation rock to open and filter loss occurs. The key to the filtration of the working fluid is that under the formation stress condition, the working fluid with a certain flow pressure forces the rock fractures to open and thus enters the interior of the fractures. [0003] The conventional experimental method of crack simulation in formation rock is to process the rock block into two corresponding cores, put them into the core holder, place the holde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12
Inventor 卢渊李成勇吴元琴周珺韩旭张紫薇车星祥
Owner 卢渊
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