川东北马路背地区裂缝对须二段储层的影响 The Fracture Effects on Reservoir in the Second Member of the Xujiahe Formation in Malubei Structure, Northeast Sichuan Basin
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DOI: 10.12677/ag.2017.72023
Abstract: 通过区域构造分析，川东北马路背地区为大巴山与米仓山前缘构造转换带。在构造精细解释的基础上，对断层和裂缝的特征进行刻画。按照裂缝的成因，预测出不同类型的裂缝在工区展布特征。与区域构造应力相关的构造裂缝是研究区高角度缝的主要成因，主要发育在断裂带附近。马路背工区处于转换带位置，工区内由Ⅰ类断层分割形成的三个断块，通过调节断块间断距的变化来调节构造的变形，形成了与构造断裂斜交的裂缝，转换带裂缝主要发育在靠近Ⅰ类大断层的共轭方向以及断层相交部位。通过高产井证实，转换带裂缝与构造裂缝形成的网状缝，是马路背地区须二特低孔低渗储层稳产的关键因素。研究认为马路背构造转换带形成的裂缝系统，与优质储层匹配形成的储渗体，是下步开发的有利目标。 Malubei area, located in north Sichuan Basin, is considered as the structural transform zone of the front of Micang-Daba Mountains based on regional structure analysis. The characters of faults and fractures can be clearly… read more here.
Keywords: xujiahe formation; zone; fault; member xujiahe ... See more keywords