川西回龙地区大安寨段成藏条件分析

Analysis of Reservior-Forming Condition of Da’anzhai Member in Huilong Area of West Sichuan

川西回龙地区大安寨段油气藏类型系裂缝性介屑滩油气藏,大安寨段油气藏属自生自储油气藏,回龙地区大安寨期处于滨浅湖相区,介屑滩规模小,储层较差,发育小型裂缝型油藏。

The Da’anzhai member in Huilong of West Sicuan area is bio-fragmental limestone fractured oil and gas reservoir. Da’anzhai member is self-producing and self-reserving reservoir. Da’anzhai member in Huilong area is in foreshore and meare phase field, the scale of bio-fragmental limestone is small, the reservoir bed is bad, and it is a developed fracture type reservoir.