长岭断陷龙凤山地区断裂与油气运聚的关系

发布时间：2018-07-02 19:52

  本文选题：断裂活动性 + 断裂封闭性　； 参考：《地球科学》2017年10期

【摘要】：长岭断陷龙凤山地区具有"下生上储、他源成藏"特征,明确断裂与油气运聚的关系对指导其油气勘探具有重要意义.在分析断裂静态特征的基础上,分别定量评价断裂的活动性、封闭性以及断-盖配置关系,并提出了评价断-盖配置有效性的"SGR下限"法(SGR全称是Shale Gouge Ratio),结合油气藏静态分布特征,探讨了断裂对油气差异聚集的控制作用.研究结果表明,第1期油气成藏早中期,断裂可大规模输导油气;第1期晚期及第2期油气成藏时,主干反向断裂形成的封闭"走廊"空间为油气提供聚集场所.应用"SGR下限"法,认为营Ⅲ砂组断-盖配置关系较好,为油气提供良好的保存条件.断裂控烃作用体现在3个方面,断裂的活动性控制了油气不同时期的垂向运移规模,断裂的封闭差异性控制了油气富集程度,断-盖配置关系控制了油气的富集层系.
[Abstract]:The Longfengshan area in Changling fault depression has the characteristics of "lower generation, upper reservoir, other source and reservoir formation". It is of great significance to clarify the relationship between fault and hydrocarbon migration and accumulation to guide its oil and gas exploration. Based on the analysis of the static characteristics of the fault, the activity, sealing and the relationship between the fault and the cover of the fault are quantitatively evaluated. The "SGR lower bound" method (SGR) is proposed to evaluate the effectiveness of fault-cap configuration (SGR is Shale Gouge ratio). Combined with the static distribution characteristics of oil and gas reservoirs, the controlling effect of faults on oil and gas differential accumulation is discussed. The results show that the faults can transport oil and gas on a large scale in the early and middle stage of hydrocarbon reservoir formation in the first stage, and that the closed "corridor" space formed by the main reverse faults provides a place for oil and gas accumulation during the late and second oil and gas accumulation periods of the first and second periods. By using the "SGR lower limit" method, it is considered that the relationship between fault and cap configuration of Ying 鈪，

本文编号：2090736