Oil-gas migration simulation experiment device and method

Abstract

The invention provides an oil-gas migration simulation experiment device and method and belongs to the field of physical geography. The device comprises a fluid input part, a model part and an ultrasonic detection part. The fluid input part is used for selecting the type of input fluid and controlling the flow of the input fluid. The model part comprises a single layer or multiple layers of seepage materials, and if the multiple layers of seepage materials are adopted, the seepage materials are arranged from bottom to top sequentially. An injection hole is formed in the lower portion of the model part and an outlet of the fluid input part is communicated with the injection hole through a pipeline. The ultrasonic detection part comprises ultrasonic transmitting probes and a face scanning vibration meter. The ultrasonic transmitting probes are laid on the two sides of the upper surface of the model part and used for simulating a field focus. Measuring points are arranged at the portion, between the ultrasonic transmitting probes on the two sides, of the upper surface of the model part. A scanning laser head of the face scanning vibration meter is lifted at the upper end of the center of the model part and used for measuring vibration of each measuring point.

Description

technical field [0001] The invention belongs to the field of geophysics, and in particular relates to an oil and gas migration simulation experiment device and method. Background technique [0002] With the development of petroleum exploration, large-scale oil and gas fields have been basically discovered. Therefore, it is becoming more and more important to improve the recovery rate of mature oilfields. The only effective way to improve the recovery of existing oil and gas reservoirs is to further understand the heterogeneity of the internal structure of the rock and the fluid flow inside the rock. To do this, seismic surveys are often used. The so-called seismic survey refers to the use of explosives as the source of the earthquake (that is, the so-called artificial earthquake), and the use of seismic reflection sound waves to detect the formation situation. When the rock formation contains fluid, does not contain fluid, or contains different fluids, the wave velocity a...

AI Technical Summary

Problems solved by technology

[0012] (1) The input fluid cannot be automatically selected, and the injection speed cannot be automatically controlled;

[0013] (2) High-density detection cannot be carried out, and the consequence is that the detection points are not dense enough, so the imaging clarity is poor;

[0014] (3) The repeatability is not good enough

The detection speed is slow, which affects the detection accuracy

Images