The gas genetic types are multiple, dominated by oil-type gas and coal-formed gas types, and then followed by other types such as the biogas, mixed gas, H2S-rich gas and abiogenetic gas etc.

• 气藏中的天然气成因类型繁多，以油型气型和煤成气型为主，还有生物气型、混合气型、硫化氢气型和无机成因型。