Abstract：Synthesizing seismic, logging and drilling information, based on sequence-stratigraphic interpretation of 3-D seismic data, taking core and imaging logging data as calibration and wavelet transform of logging signal in individual well as kernel, the technique of division of sand-gravel rock mass sedimentary cycle was built up. The key using imaging logging data to carry out the identification of sedimentary cycle lies on the reasonably implementing the transformation from "image" to"lithofacies", and using core data to calibrate the stratigraphic imaging logging image, which diminishes the multiple solutions of geologic interpretation and creates different types of lithofacies modes. The 1-D logging signal can be transformed into 2-D time-frequency domain by multi-scaled and high-resolution wavelet transform analysis of logging signals under the seismic constraint and imaging logging calibration, which can better reflect the periodic feature and local anomaly of signals and further gives technical support to cycle division of sand-gravel rock mass and dissection of internal structure. The practical analysis of Paleogene giant thickness of sand-gravel rock mass in steep slope of Chezhen sag of Jiyang depression showed that the technique has good application prospect for the division of sedimentary cycle and dissection of internal structure in the sand-gravel rock mass-developed zone where using biologic fossil or logging array to make stratigraphic division is very difficult.
孙怡, 鲜本忠, 林会喜. 断陷湖盆陡坡带砂砾岩体沉积期次的划分技术[J]. 石油地球物理勘探, 2007, 42(4): 468-473.
Sun Yi, Xian Ben-zhong, Lin Hui-xi. Division of sedimentary cycle of sand-gravel rock mass in steep slope of faulted lake basin. OGP, 2007, 42(4): 468-473.
