Experimental device for researching micro-leaking of gas in underground oil and gas reservoir through stratums

Abstract

The invention relates to an experimental device for researching micro-leaking of gas in underground oil and gas reservoir through stratums. The experimental device comprises a simulation chamber, a gas cylinder and at least two layers of simulated stratums superposed up and down, and a soil layer positioned uppermost, wherein each simulated stratum comprises a direct covering layer with small hole penetration, and an overlying stratum with large hole penetration and positioned above the direct covering layer, and each direct covering layer is provided with a gas outlet. The experimental device can be used for simulating the micro-leaking rule and near-surface abnormal distribution of gas in a plurality of oil and gas reservoirs underground, so as to obtain theoretic knowledge for guiding the oil and gas earth chemical exploration practice; the experimental device can conduct oil-gas secondary migration simulation and mechanism study thereof; the experimental device can conduct the closure study of the oil and gas reservoir covering layer; the experimental device can conduct oil and gas consumption quantity simulation study, thus providing parameters for the calculation of resource quantity.

Description

technical field [0001] The present invention relates to an experimental device for studying the micro-leakage of gas in underground oil and gas reservoirs, in particular to an experiment for studying the mechanism of micro-leakage of gas in oil and gas reservoirs distributed at different depths in the underground vertical direction and in different lateral positions device. Background technique [0002] Surface geochemical exploration in areas where there are two sets of hydrocarbon-bearing systems with different evolution degrees of source rocks (such as Cenozoic and Mesozoic, or Mesozoic and Paleozoic, etc.), or in areas where complex oil and gas fields exist In this study, it is necessary to identify the characteristics of geochemical anomalies from different sources, and to study the gas micro-leakage mechanism of multiple oil and gas reservoirs through experimental devices can provide experimental basis and play a guiding role for the correct analysis of surface geochem...

AI Technical Summary

Problems solved by technology

However, when setting up the simulated formation, the porosity and permeability of the simulated formation are the same at all heights, and only one layer of oil and gas caprock can be simulated

In this way, it is not convenient to simulate the interaction of gas in oil and gas reservoirs at different depths in micro-leakage

[0004] Therefore, how to solve the problem that it is inconvenient to simulate the interaction of gas in oil and gas reservoirs located at different depths in micro-leakage and the superposition effect of the surface is a technical problem that researchers in this field need to solve

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