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Gas drive overburden simulation device and use method thereof

A simulation device and gas flooding technology, which are applied in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of low reliability of simulation results and difficulty in overlay simulation of two-dimensional core models.

Active Publication Date: 2020-03-24
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a gas drive overlay simulation device and its use method to solve the problems that it is difficult to realize the two-dimensional core model overlay simulation and the reliability of the simulation results is low

Method used

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  • Gas drive overburden simulation device and use method thereof
  • Gas drive overburden simulation device and use method thereof
  • Gas drive overburden simulation device and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 provides a gas drive overburden simulation device, the structure of which will be described in detail below.

[0025] refer to figure 1 , the gas drive overburden simulation device includes an injection pump 1, a piston intermediate container 2, a core holder 3, a surge tank 4, at least two sets of oil production devices and a self-controlled thermostat 8, a piston intermediate container 2, and a core holder 3 , surge tank 4, and two sets of oil extraction devices are all arranged in the self-control thermostat box 8, and the injection pump 1 is arranged outside the self-control thermostat box 8.

[0026] Among them, the core holder 3 is used to install the core model, and the piston intermediate container 2 is a high-temperature and high-pressure resistant piston intermediate container, which has a pressure resistance of 40 MPa and a temperature resistance of 100 ° C, and is used to load carbon dioxide; the injection pump 1 is preferably a constant speed a...

Embodiment 2

[0039] Embodiment 2 provides a method for using a gas drive overlay simulation device, using the gas drive overlay simulation device provided in Embodiment 1, the use method includes the following steps:

[0040] Step A: According to the requirements of the experimental simulation object, the core model is made according to the similarity criterion, so that the size of the core model satisfies a height of 8 cm and a width of 2 cm;

[0041] Step B: The core model is loaded into the core holder, and the oil-water saturation distribution of the reservoir conditions is established;

[0042] Specifically, step B includes the following steps:

[0043] Step B1: Clean the inner wall of the holder cylinder 31, open the adjustment caps 33 and plugs 32 at both ends, and put the core model into the holder cylinder 31. If the length of the core model is less than 60cm, it needs to A number of fake rock core blocks are loaded into both ends of the cylinder body 31;

[0044] Step B2: Put t...

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Abstract

The invention discloses a gas drive overburden simulation device and a use method thereof. The gas drive overburden simulation device comprises an injection pump, a piston intermediate container, a core holder, a pressure stabilizing tank and at least two sets of oil extraction devices, wherein the injection end of the core holder is provided with at least one liquid inlet through hole, and the extraction end of the core holder is provided with at least two oil outlet through holes. The gas drive overburden simulation device provided by the invention can simulate the gas drive overburden of atwo-dimensional core model under the conditions of high pressure and high temperature, widens the length range of the core model, optimizes a gas drive overburden representation mode, improves the gasdrive temperature and pressure of the gas drive overburden simulation device, the application range of the core length and the like and the precision of overburden simulation and overburden representation results, and provides convenience for further researching the overburden law under different factors of oil reservoir conditions.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to a gas drive overburden simulation device and a method for using the same. Background technique [0002] In order to study the law of gas flooding overlay under reservoir conditions, numerical simulation is often used to study the gas flooding process combined with indoor experimental verification. The gas flooding overlay simulation device is an important equipment for indoor experimental verification. The overburden representation mode applicable to the current gas drive overlay simulation device is relatively extreme, which cannot simulate the oil and gas migration process in the actual reservoir, and the applicable range of the gas drive temperature and pressure of the model is too low, which cannot meet the actual oil and gas migration process. Reservoir conditions (temperature generally above 60°C, pressure generally above 10MPa) greatly reduce the scope of applicat...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B43/16
CPCE21B49/00E21B43/164
Inventor 赵凤兰宋黎光王强冯海如张德明
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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