Abstract：The existing fracture prediction methods for buried-hill reservoirs mostly describe the development characteristics of single-scale fracture zones. In order to comprehensively reflect the multi-scale fracture characteristics of Archaeozoic buried-hill reservoirs in M gas field of the Bohai Basin,a multi-scale fracture prediction technique for buried-hill reservoirs based on main controlling factors is proposed. ①In view of the favorable area of micro-geomorphology and weathering control of grooves and ridges,the curvature attribute is used to characterize the groove and ridge morphology on the top surface of the buried hill and predict the macro-scale fracture accumulation bands caused by weathering. ②In view of the structural fractures of buried-hill controlled by high and steep faults along the near east–west direction in Yanshanian—Himalayan stages, the distribution of large-scale steep faults is predicted based on Radon transform technique. ③Constrained by the direction and angle of regional fault development,the medium and small scale micro-fault zones are predicted by using ant tracking attributes. ④The low-frequency and high-frequency information of curvature attribute,Radon transform attribute,and ant tracking attribute are obtained based on the Contourlet transform. The fusion rules of low-frequency and high-frequency information are designed respectively,and the prediction results of fracture zones with three different scales are effectively fused based on the Contourlet transform. The fusion attribute is well matched with FMI imaging logging fracture density and production test knowledge,which comprehensively reflects the development characteristics of multi-scale fracture zones in the buried hill and guides the design and optimization of development wells in M gas field. It is proved that the seismic multi-scale fracture reservoir prediction technique has practicality.
杜昕, 范廷恩, 马淑芳, 樊鹏军, 张显文. 基于主控因素的潜山裂缝储层多尺度地震预测[J]. 石油地球物理勘探, 2024, 59(3): 598-607.
DU Xin, FAN Tingen, MA Shufang, FAN Pengjun, ZHANG Xianwen. Seismic multi-scale fracture prediction for buried-hill reservoirs based on main controlling factors. Oil Geophysical Prospecting, 2024, 59(3): 598-607.
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