Helium genesis resource evaluation method and apparatus

A device for helium genesis resource evaluation, comprising a memory, a processor and a computer program stored in the memory and capable of operating on the processor, wherein the processor, when executing the computer program, implements the following steps:

• for a helium source rock at a target area, acquiring an absolute age of the helium source rock, the content of a radioactive element in the helium source rock by rock measurement, and acquiring a density of the helium source rock and a decay constant of the radioactive element in the helium source rock;
• determining a volume of the helium source rock at the target area, including:
• determining a bottom boundary depth of the helium source rock at the target area based on a preset temperature;
• determining a top surface depth of the helium source rock and a distribution area of the helium source rock at the target area;
• determining a thickness of the helium source rock based on the bottom boundary depth of the helium source rock and the top surface depth of the helium source rock;
• and
• determining the volume of the helium source rock based on the thickness of the helium source rock and the distribution area of the helium source rock;
• determining the content of an undecayed parent isotope in the helium source rock on the basis of the density of the helium source rock, the content of the radioactive element in the helium source rock and the volume of the helium source rock;
• determining the content of a decayed daughter isotope in the helium source rock on the basis of the absolute age of the helium source rock, the decay constant of the radioactive element in the helium source rock and the content of the undecayed parent isotope in the helium source rock;
• determining the amount of substance of helium in the helium source rock on the basis of the content of the decayed daughter isotope in the helium source rock;
• determining a total helium production amount of the helium source rock on the basis of the amount of substance of the helium in the helium source rock;
• determining a migration-accumulation coefficient of the helium in the helium source rock at the target area;
• and
• determining a helium accumulation resource amount on the basis of the migration-accumulation coefficient and the total helium production amount of the helium source rock, wherein the determined helium accumulation resource amount is used to evaluate the helium resources in the target area.

A non-transitory machine-readable storage medium, having stored thereon instructions, which, when executed by a processor, cause the processor to be configured to perform the following steps:

• for a helium source rock at a target area, acquiring an absolute age of the helium source rock, the content of a radioactive element in the helium source rock by rock measurement, and acquiring a density of the helium source rock and a decay constant of the radioactive element in the helium source rock;
• determining a volume of the helium source rock at the target area, including:
• determining a bottom boundary depth of the helium source rock at the target area based on a preset temperature;
• determining a top surface depth of the helium source rock and a distribution area of the helium source rock at the target area;
• determining a thickness of the helium source rock based on the bottom boundary depth of the helium source rock and the top surface depth of the helium source rock;
• and
• determining the volume of the helium source rock based on the thickness of the helium source rock and the distribution area of the helium source rock;
• determining the content of an undecayed parent isotope in the helium source rock on the basis of the density of the helium source rock, the content of the radioactive element in the helium source rock and the volume of the helium source rock;
• determining the content of a decayed daughter isotope in the helium source rock on the basis of the absolute age of the helium source rock, the decay constant of the radioactive element in the helium source rock and the content of the undecayed parent isotope in the helium source rock;
• determining the amount of substance of helium in the helium source rock on the basis of the content of the decayed daughter isotope in the helium source rock;
• determining a total helium production amount of the helium source rock on the basis of the amount of substance of the helium in the helium source rock;
• determining a migration-accumulation coefficient of the helium in the helium source rock at the target area;
• and
• determining a helium accumulation resource amount on the basis of the migration-accumulation coefficient and the total helium production amount of the helium source rock, wherein the determined helium accumulation resource amount is used to evaluate the helium resources in the target area.