Natural gas hydrate exploitation simulation device and method

Abstract

The invention is suitable for the technical field of natural gas exploitation simulation equipment, and particularly relates to a natural gas hydrate exploitation simulation device and method.The device comprises a gas injection unit, a temperature control unit, a reaction unit, an outlet control unit and a data processing unit, the gas injection unit is communicated with the reaction unit, the reaction unit is arranged in the temperature control unit, and the outlet control unit is arranged in the temperature control unit; the temperature control unit is used for controlling reaction conditions of the reaction unit, the outlet control unit is connected with the reaction unit, and the data processing unit is connected with the gas injection unit, the temperature control unit, the reaction unit and the outlet control unit and used for data acquisition and data processing. Under the condition that the characteristics of a natural gas hydrate reservoir are truly simulated, a one-dimensional large-scale natural gas hydrate exploitation experiment can be carried out, exploitation evaluation can be carried out on methods such as pressure reduction, N2 purging and replacement, the exploitation efficiency and economical efficiency of specific hydrate stratums through multiple exploitation methods can be investigated, and the method is suitable for large-scale exploitation of natural gas hydrates. And a reliable scheme and technical guidance are provided for commercial exploitation of the natural gas hydrate.

Description

technical field [0001] The invention belongs to the technical field of natural gas exploitation simulation equipment, and in particular relates to a natural gas hydrate exploitation simulation device and method. Background technique [0002] At present, natural gas hydrate production methods mainly include depressurization method, heat injection method, chemical inhibitor injection method, displacement method, etc., and all of them are used in field trial production. Among them, the method of depressurization, heat injection and injection of chemical inhibitors is to artificially break the temperature and pressure equilibrium conditions of the existence of natural gas hydrate, so that the natural gas hydrate is decomposed, and then the natural gas is extracted to the ground; The natural gas is replaced to obtain carbon dioxide hydrate and natural gas to realize the exploitation of natural gas. [0003] Aiming at various hydrate mining methods, it is necessary to have a cert...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic natural gas hydrate mining experimental devices are mostly horizontal, one-dimensional, and small-scale three-dimensional experimental devices. The hydrate mining experiments can only reflect local and short-distance hydrate mining conditions, and cannot investigate the mining efficiency as the mining radius increases. , effects and other changes, thus restricting the selection of effective, economical and safe methods for large-scale field mining of hydrates

Images