川西南部地区须二段储层预测技术研究

RESERVOIR PREDICTION TECHNIQUES OF T_3x^2 IN THE SOUTH PART OF WEST SICHUAN

文章针对川西南部地区须家河组储集体具有低孔低渗非均质性强的特征,进行了速度反演、自然伽马反演、孔隙度反演及地震属性提取、分析各种方法试验,寻找出一套适用、有效的砂岩储层预测技术。采用速度反演、辅以自然伽马反演有效地预测储层的有无;利用孔隙度繁衍和量化技术计算出储能系数,查明储层的厚薄和好坏。将该技术推广应用于重点区块“邛西—灌口”地区,有效地预测了须二段上部和中部的砂岩储层,分析该工区储层平面分布规律,指出了储层有利分布区,这为寻找新的含气区和天然气储量计算提供重要依据。

In light of the characteristics of the low porosity, low permeability and strong heterogeneity of Xujiahe Formation reservoirs in the south part of West Sichuan, a set of the suitable and effective sandstone reservoir prediction techniques were found up on the basis of analyzing and investigating various methods as velocity inversion, natural gamma inversion, porosity inversion and seismic attribute extraction, etc. Whether there is a reservoir there can be effectively predicted by velocity inversion while ...