Filling evolution and sand distribution in the west part of Central Canyon,Qiongdongnan Basin
Li Dong1, Xu Qiang1, Wang Yongfeng2, Wang Yingmin3
1. CNOOC Research Institute, Beijing 100027, China;
2. SINOPEC Management Institute, Beijing 100012, China;
3. College of Ueosciences, China University of Pe-troleum(Beijing), Beijing 102249, China
Abstract：Based on the 3D seismic and well data,we have studied filling evolution and sand distribution in the west part of Central Canyon by using seismic reflection characteristics and RMS amplitude attribute.The following observations are obtained: ① The canyon filling can be divided into three stages:canyon axial filling(LST30),low sinuosity channel(LST29)and MTCs(LST28and LST27), ② The fillings are controlled by canyon axial provenance,Hainan provenance and south provenance, ③ Canyon axial filling sands are located in LST30. Channel sands are mainly developed in the LST29 and the eastern part of the area during the later LST30.Lobe sands are located in the eastern part, and only developed in the LST29.In the later LST30,levee sands located on both sides of the channel.④ Canyon axial filling sand,lobe sand and levee sand are wider distribution and can be considered as good reservoirs.
李冬, 徐强, 王永凤, 王英民. 琼东南盆地中央峡谷西段充填体系沉积演化与砂体分布[J]. 石油地球物理勘探, 2013, 48(5): 799-803.
Li Dong, Xu Qiang, Wang Yongfeng, Wang Yingmin. Filling evolution and sand distribution in the west part of Central Canyon,Qiongdongnan Basin. OGP, 2013, 48(5): 799-803.
