储层/非储层并置或发育具有高排替压力的断层岩可形成断层封堵。采用详细的地震作图和井数据分析方法评估封堵的可能性。断层封堵一级分析包括通过已绘制的层位图和由断面处等值线所确定的精细储集地层来识别断层面上的储层并置区。二级分析评价砂岩/砂岩接触是否能维持一个压差。我们定义两类与岩性相关的属性:断层泥比和涂抹固子。断层泥比指从围岩进入断层泥中的细粒物质的比例估算值;涂抹因子法(包括黏土涂抹势和页岩涂抹因子)估算断裂期间沿断层带移动的页岩厚度。整个断层面上所有这些参数各不相同,说明不能简单地判定断层是封堵的还是非封堵的。应用上述参数的重要一步是,在据断层两侧钻井资料已知其压差的地区,对这些参数进行标定。我们已标定过许多数据集,尽管它们的背景多种多样(如布伦特(Brent)地区、尼日尔三角洲、哥伦布盆地),但所得结果相当一致。例如页岩断层泥比为20%(滑动段中的页岩体积)是产生最小过断层压差和有效封堵的典型门限值。 Faults can be formed by the formation or development of fault rocks with high displacement pressure in reservoir / non-reservoir. Use detailed seismic mapping and well data analysis methods to assess the probability of closure. Fault-level analysis includes the identification of the reservoir juxtaposition on the fault plane from the mapped horizon maps and the fine reservoir formation identified by the contour at the section. Secondary analysis assesses whether sand / sand contact can maintain a pressure differential. We define two types of lithology-related attributes: fault mud ratio and plastering solids. The fault mud ratio is the estimated proportion of fine-grained material entering the fault mud from the surrounding rock. The smear factor method (including the clay smear potential and shale spread factor) estimates the shale thickness along the fault zone during fracture. All of these parameters vary across the fault plane, indicating that it is not easy to determine whether a fault is blocked or not. A significant step in applying the above parameters is to calibrate these parameters in areas where the pressure well is known from drilling data on both sides of the fault. We have calibrated many datasets and, despite their diverse backgrounds (eg, the Brent region, the Niger Delta, the Columbus Basin), the results are fairly consistent. For example, a shale ratio of 20% mud (shale volume in the sliding section) is a typical threshold for creating minimum overpressure differential pressure and effective blockage.