The wave impedance inversion method of expressed compaction controlled by sedimentary facies model and its application on reservoir prediction: taking middle Es3 Formation of Pucheng Tectonic Belt in Dongpu Depression for example
Guo D.-B.,China University of Petroleum - Beijing |
Guo D.-B.,Science Research Institute of Exploration and Development |
Wan T.,Science Research Institute of Exploration and Development |
Wan T.,Postdoctoral Research Station of Zhongyuan Oilfield |
And 6 more authors.
Natural Gas Geoscience | Year: 2014
Through core observation, thin section identification, grain size analysis and seismic attributes research, the sedimentary facies model of Middle Es3 Formation in Pucheng tectonic belt, Dongpu Depression was established. According to the geological characteristics of "high uplifts & deep sags" and the rule of wave impedance inversion on sandstone and mudstone varing from different burial depth, the wave impedance inversion method of expressed compaction controlled by sedimentary facies model was put forward and used for reservoir prediction. The results showed that the sedimentary systems in the study area was fan delta, lacustrine mudstone and beach bar facies. Two fan deltas were developed in the down throw side of Lanliao fault and beach bar sands in shore-shallow lacustrine were found in Pucheng anticline belt. The result of reservoir prediction showed that sand thickness was bigger in the area where developed fan deltas, beach bar or area between the two fan deltas. Sandstone distribution was fit to the rule of sedimentation. Fan delta front and the beach bar between the two fan deltas in the slope area between Pucheng anticline belt and Pucheng Subsag were favorable to exploration where were easy to form up dip wedge-out reservoir and lenticular reservoir.