Simulation exploiting experiment device for natural gas hydrate

Abstract

The invention relates to an experiment device, in particular to a simulation exploiting experiment device for natural gas hydrate. The simulation exploiting experiment device for the natural gas hydrate comprises a reaction kettle, a gas supply device, a liquid supply device, a temperature control device and a gas-liquid separator, wherein the reaction kettle is respectively connected with the gas supply device, the liquid supply device, the temperature control device and the gas-liquid separator; and a time domain reflection probe is arranged in the reaction kettle and is connected with a data acquisition system through a time domain reflector. The invention has the advantages that the reaction kettle is in a longitudinal structure, so that the submarine sediment environment can be better simulated; by applying the time domain reflection technology, the saturation degree of the hydrate can be monitored in real time; and the simulation exploiting experiment device has more measuring points and can reflect the experiment progress and can conduct the experiments by using various exploiting methods.

Description

technical field [0001] The invention relates to an experimental device, in particular to an experimental device for simulated exploitation of natural gas hydrate. Background technique [0002] Marine natural gas hydrate, due to the complex environment in which it exists, may cause geological and environmental problems during the mining process, and the cost and risk of pilot-scale mining in the ocean are high, so the experimental research on hydrate mining is carried out in the laboratory in advance to obtain the necessary The technical parameters have important theoretical and practical significance. [0003] Hydrate mining methods mainly include thermal excitation (electric heating, hot water injection) mining method, decompression mining method, chemical reagent injection mining method, etc. These methods require certain experimental devices and technologies to realize. At present, domestic natural gas hydrate production experimental devices are mostly horizontal and one...

AI Technical Summary

Problems solved by technology

The devices used in the experimental research on hydrate mining in foreign countries have horizontal and vertical structures, but they still cannot monitor the change of hydrate saturation during the hydrate decomposition process at the same time, nor can they reflect the decomposition status of different positions of the sediment.

Moreover, it is difficult to realize the experimental research of various hydrate production methods in the same device

[0004] On the seabed, gas hydrate is extremely fragile. Once certain factors (such as sea level drop, seabed tectonic activities, increase in seabed heat flow, improper drilling or gas production, etc.) cause seabed pressure to drop or temperature to rise, gas hydrate will have It may be decomposed into natural gas and water, which will affect the stability of seabed sediments, and even lead to seabed landslides and serious destabilization of marine structures. A large amount of natural gas will cause environmental disasters such as biological death and climate warming.

Images