塔里木盆地顺北5断裂带储集体地震反射与产能特征分析

塔里木盆地顺北油气田是当前超深层碳酸盐岩勘探领域的热点，沿顺北5断裂带部署的多口钻井揭示出缝洞型储集体，具有极强的物性非均质性，且不同钻井产能差异性大。基于钻井靶点的地震、测井和生产动态资料等，利用井震标定的手段，分析该地区储集体地震反射与产能特征，探讨井轨迹对产能的影响。结果表明，工区内储集体发育有两类地质模式：第一，断面加优势缝洞型，由贯穿或逼近断面加优势缝洞型的钻井揭示，钻井的靶点为依附于断面的地层强烈破碎体系，裂缝发育密集，产量高；第二，远离断面加优势缝洞型，钻井靶点多夹持于两个远距离断面之间，地层破碎程度弱，裂缝稀疏，产量低。该研究明确断面与其控制的优势缝洞是工区钻井高产的保障，为今后钻井部署与井轨迹调整提供新思路。

Seismic Reflection and Productivity of Reservoirs in the Fault-Zone 5 of Shunbei,Tarim Basin

Shunbei oil&gas field in Tarim Basin is considered as a hot spot in ultra-deep carbonate reservoir exploration.Multi wells deployed along the Shunbei Fault-Zone 5 reveal a fracture-cave reservoir with strong heterogeneity and great differences in productivity.Based on the seismic,logging and production data of drilling targets,the well-seismic calibration was used to analyze the seismic reflection and productivity and explore the influence of well trajectory on productivity.Result shows that there are two geological modes in this area:①cross-section plug dominant fracture-cave,the drilling target is a strongly broken system attaching to the cross-section,the fracture density significantly increases to the cross-section,and the well shows high productivity;②Dominant fracture-cave far away from cross-section,the drilling target is generally clamper between two long-distance cross-sections with relatively low broken level,and the well shows low productivity.This research clarifies the cross-section and the corresponding dominant fracture-cave as the main-controlling factors for high well productivity in this area,which could provide a new orientation for future well deployment and trajectory adjustment.