The Diffusion Model and Computation Method of Diffusion Quantification for Natural Gas
- Received Date: 1997-10-21
- Rev Recd Date: 1998-01-12
- Publish Date: 1998-12-10
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Key words:
- natual gas /
- diffusion /
- model /
- cap rock
Abstract: Cap rock is the necessary condition of the gas reservoir preservation, and hydrocarbon concentration confining is one important confining mechanism. The geological and mathematical model of natural gas diffusion has been set up system atically. The natural gas diffusion is mainly through the water, so the solubility of the natural gas in water can be regarded as theinitial gas concentration in the cap rock. The solubility of the natural gas can be calculate by the determination of the temperature, pressure and salini-ty of the stratum. The source rock is usually of relatively larger solubility, so it is the best cap rock.
Citation: | Fang Dequen, Song Yan, Zeng Fangang, Wang Guanyu. The Diffusion Model and Computation Method of Diffusion Quantification for Natural Gas[J]. Acta Sedimentologica Sinica, 1998, 16(3): 72-74,79. |