Patent ID: 11899005
Assignee: GUANGZHOU INSTITUTE OF ENERGY CONVERSION, CHINESE ACADEMY OF SCIENCES
Field: Measurement (Instruments)
Classification: CPC G  B  E | IPC B  E  G

Claim 16:
17. A method for a simulation experiment of sand production and sand control in natural gas hydrate exploitation using the divisible device of claim 1, comprising the following steps:
assembling the reactor system to give a combination according to a purpose of the simulation experiment, placing a reservoir material partially in a corresponding reactor unit according to the combination, disposing sensors in the corresponding holes, wherein the sensors include pressure sensors, temperature sensors, and resistance sensors;
connecting the feeding system and the separation and measurement system to the corresponding inlets or outlets of the reactor system, vertically or horizontally disposing the reactor system in the water-bath jacket system, and fixing the in the water-bath jacket system on the base;
performing an air tightness test on the reactor system and the water-bath jacket system;
filling the corresponding reactor unit with the reservoir material, introducing water and methane gas into the reactor system to a predetermined pressure according to the simulation experiment to initiate the formation of the natural gas hydrates under the predetermined pressure and the temperature regulated by the water-bath jacket system; monitoring a pressure change in the reactor system via the pressure sensors, wherein the formation of the natural gas hydrates is complete when the pressure change in a specific period is zero or below a predetermined value;
performing the simulated exploitation via a depressurization method, and separating and measuring the gas-liquid-sand mixture via the separation and measurement system;
when a pressure of produced gas reduces to a predetermined value and stops changing, terminating the simulated exploitation, and sending the measurement data to the software recording and analyzing system via the support and safety system.