Visual high-temperature and high-pressure fracture-cavity simulation system and use method thereof

A simulation system, high temperature and high pressure technology, applied in the direction of earthwork drilling, mining fluid, wellbore/well components, etc., can solve the problems of size and connection relationship, difference, real-time observation of fluid flow status, etc., to improve reliability Operability and flexibility, effect of reducing experiment cost

Pending Publication Date: 2021-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, this model is a simplified physical model of fractured-vuggy reservoir injection, which simplifies the pores, fractures, and cavities in the fractured-vuggy reservoir into a regular model. The shape, size and connection relationship of pores, fractures and caves are displayed, which are quite different from the actual fracture-cavity reservoir system.
At the same time, the physical model of the injection agent in the fracture-vuggy reservoir is invisible, and it is impossible to observe and record the fluid flow in the model in real time

Method used

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  • Visual high-temperature and high-pressure fracture-cavity simulation system and use method thereof
  • Visual high-temperature and high-pressure fracture-cavity simulation system and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a visualized high-temperature and high-pressure fracture-cavity simulation system includes: a fracture-cavity simulation system, a first pressure gauge 1, a second pressure gauge 2, an advection pump 12, an intermediate container system, a back pressure valve 13, and a gas-liquid separator 14 and gas meter 15; the advection pump 12, the intermediate container system, the second pressure gauge 2, the crack hole simulation system, the back pressure valve 13, the gas-liquid separator 14 and the gas volume The meter 15 is connected in turn through pipelines, and the first pressure gauge 1 is connected with the back pressure valve 13 through pipelines; the intermediate container system is used for injecting experimental fluid into the crack-hole simulation system, and the crack-hole simulation system The system is used to provide the formation environment required for the experiment.

[0028] The intermediate container system includes a simulated ...

Embodiment 2

[0040] A method for using a visualized high-temperature, high-pressure fracture-cavity simulation system. The advection pump 12 pressurizes the simulated formation water intermediate container 5, and injects simulated formation water into the fracture-cavity simulation system. When the fracture-cave simulation After the system is saturated with simulated formation water, close the inlet and outlet valves of the simulated formation water intermediate container 5; then pressurize the simulated oil intermediate container 3 through the advection pump 12, and inject simulated oil into the fracture-cavity simulation system , when the fracture-cavity simulation system is saturated with simulated oil, build up the pressure of the fracture-cavity simulation system, and then close the inlet and outlet valves of the simulated oil intermediate container 3, so as to establish the original formation pressure and original water saturation , oil saturation, and then depletion experiments, wate...

Embodiment 3

[0042] In the fracture-cavity simulation system, depletion experiments, water flooding experiments and gas injection flooding experiments were carried out to simulate three stages of oil and gas field development: depletion production, water flooding production and gas injection flooding production stages, to clarify the oil displacement of different production methods The mechanism and the distribution position of the remaining simulated oil after each stage are used to guide and improve the development method of Tahe carbonate fracture-vuggy reservoir.

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Abstract

The invention aims to provide a visual high-temperature and high-pressure fracture-cavity simulation system and a use method thereof. According to system and the use method thereof, the flow condition of fluid in a fracture-cavity is recorded online through a visual window on the side face of a container, and the guiding effect on the actual development process of a fracture-cavity oil reservoir is achieved. In order to achieve the purpose, the visual high-temperature and high-pressure fracture-cavity simulation system comprises a fracture-cavity simulation system body, a first pressure gauge, a second pressure gauge, a constant-flux pump, an intermediate container system, a back-pressure valve, a gas-liquid separator and a gas meter.

Description

technical field [0001] The invention relates to the technical field of petroleum engineering, in particular to a visualized high-temperature, high-pressure fracture-cavity simulation system and a use method thereof. Background technique [0002] The fractured-cavity carbonate reservoir is a reformed reservoir, and its main storage space and seepage channel are mainly composed of pores, caves and fractures. Physical simulation is a common method for simulating the development of oil and gas reservoirs. Based on the relevant data provided by the actual oil field, a physical model is designed and manufactured to simulate the actual mining process of fractured-cavity reservoirs. Existing physical models of injection agents in fractured-vuggy reservoirs, such as glass tube model, etched flat plate model, pouring irregular model, core fracture-cavity model, etc., are difficult to process, not resistant to high temperature and high pressure, difficult to observe the experimental pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B43/16E21B43/20E21B47/002
CPCE21B43/166E21B43/20E21B49/00
Inventor 胡文革刘学利杨敏谭涛陈勇郭臣杨占红窦莲解慧谢爽
Owner CHINA PETROLEUM & CHEM CORP
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