声波测井在碎屑岩沉积压实研究中的应用

通过对塔里木盆地北部阿克库勒地区 5口钻井泥质岩的声波时差及相应的孔隙度、古地层压力研究 ,求得本区的平均压实方程。认为本区 310 0～ 350 0 m属于正常压实层 ,其下属于欠压实层段。初步分析各时代流体的封闭时间和主要目的层欠压实异常类型。结合地震勘探资料 ,提出低速异常带中的更低异常区是找油领域之一。

ACOUSTIC LOGGING APPLIED IN STUDYING SEDIMENTATION-COMPACTION OF CLASTICS

By study of acoustic time difference and associated porosity and paleostratigraphic compaction of mudstones from five drills of Akkule in the northern Tarim basin,an average compaction equation is ob- tained,which shows that the section between 310 0 m and350 0 m is the normal compaction layer,while the section below350 0 m is the sub- compaction layer.The confining time of fluids of each age is primarily ana- lyzed as well as sub- compaction anomaly type of the main target layers.In couple with seismic exploration data the further anomaly regions are pointed as one of the oil- prospecting regions.