阜阳地区非常规气藏勘探前景浅析

Exploration prospect of unconventional natuaral gas in Fuyang area

致密砂岩气、煤层气、页岩气等非常规油气资源正在成为当前储量增长的主体,非常规油气资源在未来能源结构中的地位越来越重要。通过对阜阳地区的成藏条件分析,并与鄂尔多斯苏里格致密砂岩气田对比,认为阜阳地区石炭—二叠系煤系烃源岩具有广覆生烃的能力,并与砂岩储层呈指状、互层状接触,在喜山期断裂活动的背景下,油气运移顺畅,在煤系地层内部及三叠系泥质岩的封盖下,具有与苏里格气田相似的成藏模式,具备形成致密砂岩气藏的良好条件。

The unconventional oil and gas resources such as tight sandstone gas, coal bed methane and shale gas, etc. , is becoming main part of current reserves increase, and it is more and more important in the future energy structure. Based on the analysis of reservoir formation conditions of Fuyang area, and by compared with tight sand gasfield in Ordos Sulige, it is considered that the Carboniferous - Permian coal source rocks in Fuyang area has ability of overlying hydrocarbon generation, and there is finger and layered contact with sandstone reservoir. Under the background of Himalayan fault activity, the hydrocarbon migration is smooth ; in coal - bearing strata and under the cover of Triassic mudstone,the accumulation mode is similar to Sulige gasfield,with good conditions of forming tight sandstone gas reservoirs.