RESERVOIR EVALUATION MEASURE FOR CONDENSATED GAS RESERVOIR OF CARBONATE ROCKS IN QIANMIQIAO BURIED HILL
千米桥潜山碳酸盐岩凝析气藏储层评价方法

Qianmiqiao buried hill condensated gas reservoir is an important discovery at the end of 20th century in Bohai Bay basin. Because the reservoir lithology is carbonate rocks, the pore type includes matrix pore, fractured pore and vug pore, it is hard to make quantitative reservoir evalu- ation. With the development of the imaginery logging technology (particularly the micro-resistance imagery logging FMI), the geological phenomena near well walls can be evaluated quantitatively and directly. Limited by the detection depth it is impossible to make an effective prediction to reserve type and property variety. Taking the successful reservoir evaluation of Qianmiqiao buried hill as a practical example, this paper introduces how to make an accurate lithology recognization and divide the effective pores into matrix ones and fractured and vug ones corresponding to macroscopic core observation and microcosmic laboratory assay data applying 3700 routine logging data integrated with imaginary logging data based on the systematic coring graduation logging. Upon this carry out the quantitative evaluation on reserve type and its capability, at the same time apply NMR logging to judge the fluid quality.