塔河油田碳酸盐岩储层地球物理响应特征

碳酸盐岩储层是塔里木盆地北部油气勘探的主要目标之一,该类裂缝、溶洞型储集层非均质性和各向异性极强,给油气的勘探与开发工作带来较大困难。针对碳酸盐岩储层预测难点,利用物探方法与手段,建立了一套适合塔河地区碳酸盐岩储层预测的方法技术系列,并在生产实践中取得了很好的应用效果,提高了钻井的油气命中率。这些技术主要包括地震振幅提取、振幅变化率计算、相干体计算及波阻抗反演等。

The geophysical characteristics of carbonate reservoirs in Tahe oilfield,Tarim Basin

Carbonate reservoir is the main target for oil-gas exploration in the north of the Tarim basin. Because of strong heterogeneity and anisotropy of carbonate reservoirs, the exploration and development for oil and gas encountered great difficult. A suite of geophysical methods for prediction of carbonate reservoirs has been developed. Satisfactory results have been achieved by applying these methods into practice in Tahe Oilfield. The hit rate of drilling has been increased. The methods include seismic amplitude pick-up, calculation of rate of seismic amplitude change, calculation of coherence cube, and impedance inversion.