Quantitative prediction on fractures and its development law in Lianglitage Formation in Tazhong 54-Tazhong 16 well area, Tarim Basin
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摘要: 运用断面脱空理论与断层相关裂缝定量描述技术（VSD），以三维地震资料的地质构造精细解释为基础，对塔中54—塔中16井区上奥陶统良里塔格组断层相关的裂缝发育、分布特征进行了定量计算与预测，并以塔中823井为例较为详细地介绍了VSD计算的步骤及成果展示。研究结果表明：塔中54—塔中16井区总体上位于宽缓构造带，有效裂缝主要为断层相关裂缝，集中于断层附近，因牵引作用而造成该地区强烈褶曲形变。VSD计算结果得到了测井反演及岩心等资料的验证，表明VSD技术较为准确地预测了该区构造裂缝的发育分布情况，从而为后续勘探、开发、部署提供了依据。Abstract: In this paper，based on the 3D seismic data in the Tazhong 54Tazhong 16 well area，by means of fault detachment theory and its derived Void Space Description(referred to as VSD hereafter for short)technique，the authors carry out quantitatively calculation and prediction on development and distribution characteristics of the faultrelated fractures in the Lianglitage Formation in the study area，meanwhile，taking well TZ 823 as an example，we introduced and exhibited the procedures to operate the VSD technique and related outcome maps.The results show that，in the Tazhong 54Tazhong 16 well area，the effective fractures are primarily faultrelated ones and they are chiefly distributed along fault planes with strong foldingshaped deformation and drag structures.Alternately，the dual lateral log interpretation of fracture parameters，cores and well testing data support the VSD results，thus，it tends to suggest that the fault detachment theory and VSD technique could be a powerful tool to predict the distribution of structural fractures.These initial efforts may provide us data for further exploration activities and wells deployment.
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