Patent ID: 11873712
Assignee: CHINA UNIVERSITY OF PETROLEUM—BEIJING
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 10:
11. The non-transitory computer-readable storage medium according to claim 8, wherein before the determining the initial gas pressure according to the actual recovery of the natural gas, the processor is further enabled to:
set a corresponding pressure value of a displacement pump to the initial formation pressure, so that a liquid enters a third intermediate container from a liquid inlet end of the third intermediate container to compress natural gas inside the third intermediate container, so as to make an internal pressure of the third intermediate container reach the initial formation pressure;
control the natural gas in the third intermediate container to be injected into a core in vacuum in the core holder, and stop the natural gas from being injected into a core saturated with the natural gas in the core holder when both a pressure at the outlet end of the core holder and a pressure at the inlet end of the core holder reach the initial formation pressure; and
determine a total volume of the natural gas in the core saturated with the natural gas according to the initial formation pressure, a gas deviation factor of the natural gas, atmospheric pressure, and a pore volume of the core.