Lithologic oil/gas reservoir exploration technology in Putaogou area of Tuha basin
Lin Ming-qiang1, Zhao Yu-feng2
1. Department of Exploration of Tu-Ha Oilfield Brach, PetroChina, Hami City, Xinjiang Uygur Autonomous Region, 839009, China;
2. Borehole Seismic Center of BGP,CNPC,Zhuozhou City,Hebei Province,072751,China
Abstract：The structural background and developing condition of lithologic oil/gas reservoir have been formed in Putaogou area of Taibei sag after the reformation of late structural activity. The sandstone and mudstone, the Middle Jurassic major objective layer in Putaogou area, is characterized by distribution of flaggy alternative beds vertically and rapid facies-changing laterally, and poor differentiation of sandstone from mudstone by wave impedance, which brought about difficulty to predict the lithologic trap in the area. Based on sequence-stratigraphy and sedimentary micro-facies study, the paper used lithologic random simulation, logging reconstruction inversion, analysis of seismic attributes, integrative multi-attribute oil/gas prediction, analysis of seismic wavelet absorption and flat spot techniques to effectively predict the lithologic trap and developing condition of oil/gas reservoir, discovering the abundance zone of structural-lithologic oil/gas reservoir in Putaogou area.
