滇黔北地区HJB区块石牛栏组储层评价方法

Reservoir evaluation for Shiniulan Formation in the HJB block,the northern Yunnan and Guizhou

滇黔北地区HJB区块位于四川台坳川南低陡褶皱带南缘,区内多口井在志留系石牛栏组下部天然气显示良好。为准确评价HJB区块石牛栏组下部裂缝性储层,落实裂缝发育区以及气藏的含气范围及规模,应用GeoEast解释系统曲率体、高亮体、含油气检测以及EasyTrack叠前裂缝检测等特色技术,对HJB区块石牛栏组下部4号小层开展精细属性分析,刻画并圈定有利含油气范围,为区内石牛栏组裂缝性气藏的有利目标优选提供了有力依据。

The HJB block located in the north Yunnan and Guizhou is on the southern margin of the low steep fold belt in Sichuan Depression.Many drilled wells have rich-gas show in Lower Silurian Shiniulan Formation.In order to accurately evaluate fractured reservoirs and determine fracture and gas-bearing belts,we achieve reservoir evaluation for Shiniulan Formation with interpretation tools provided by GeoEast,including curvature cube,highlight volume,hydrocarbon detection,and EasyTrack prestack fracture prediction.The Bed 4 of Lower Shiniulan Formation is analyzed with attributes,and favorable oil and gas bearing traps are depicted,which provides a strong basis of favorable targets for the future exploration.