Estimation of loss of gas diffusion from sourcerock in Binbei region

This paper has evaluated the diffusion amount of the sourcerock of K_1q_n and K_1n_(1+2) in Binbei region, established a method for estimating gas diffusion amount through mathematical model of gas diffusion loss, and the method for establishing the diffusion losing amount in the condition of multi-gas sourcerock. Using the method this paper estimates the gas diffusion loss amount of gas sourcerock of K_1qn and K_1n_(1+2) in Binbei region. The result indicates that the total gas diffusion loss amount of K_1qn in Binbei region is about 5.3×10~(11) m~3, which is 31.2% of the total generation gas amount. The total gas diffusion loss amount of K_1n_(1+2) in Binbei region is about 2.5×10~(11) m~3, which is 32.5% of total generation gas amount. It indicates that the diffusion is the important factor of gas loss in Binbei region.