Device and method for thickened oil deposit gas injection huff-puff oil extraction physical simulation experiments

A technology of gas injection huff and puff and physical simulation, which is applied in the direction of earthwork drilling and production, wellbore/well components, etc. It can solve the problems of insufficient one-dimensional length of the model, short huff and puff cycles, and no pressure measuring points, etc., so that the experimental results are true and reliable , the effect of high degree of automation
CN102748018AActive Publication Date: 2012-10-24PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2012-10-24

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Abstract

The invention discloses a device and method for thickened oil deposit gas injection huff-puff oil extraction physical simulation experiments. The device comprises an injection system, a model system, an output control system and a data collection and control system, wherein the injection system is connected with the model system so as to inject formation water, crude oil and huff-puff gas into the model system, the outlet end of the model system is connected with the output control system, the output control system is used for controlling the output of oil-gas mixtures of the model system and calculating gas flow and oil production in the outputted oil-gas mixtures, the model system is further connected with the data collection and control system, and the data collection and control system is used for collecting pressure, temperature and huff-puff gas flow data in a model body and monitoring and processing data in real time. The device can be used for truly simulating processes of injecting gas into a stratum, soaking and extracting indoors and monitoring pressure and pressure gradient distribution rules of different positions from the well bottom of a gas injection well to the far end of the stratum in gas injection and extraction simulation processes.
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Description

technical field

[0001] The invention belongs to the field of petroleum development, and in particular relates to an experimental device and method for simulating the gas injection huff and puff oil production process of heavy oil reservoirs. Background technique

[0002] In the field of petroleum development, gas injection huff and puff oil production refers to inject huff and puff gas (natural gas, carbon dioxide, etc.) The ground is in contact with the formation crude oil and dissolves to reach saturation, which is called the swallowing process; after the immersion period is over, the well is opened for production, and due to the dissolved gas drive and the expansion of the crude oil, the gas staying in the formation mixes with the expanded crude oil and flows out of the wellhead , to complete the spraying process.

[0003] At present, China's heavy oil development methods mainly include steam stimulation (about 78%), steam flooding (about 10%) and conventional water floo...

Claims

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