文档介绍：西北大学硕士学位论文鄂尔多斯盆地上古生界天然气成藏特点及开发对策姓名:孙胜宇申请学位级别:硕士专业:油气田开发工程指导教师:张金功 20100623 摘要本文依据地质资料、录井解释及测井解释等资料,结合岩心、薄片观察和孔隙度、渗透率测试分析,对鄂尔多斯盆地上古生界早白垩世末烃源岩最大埋深期、晚白垩世以来地层剥蚀期及现今构造定型阶段的天然气运移最大驱动力源区的分布特征进行分析, 并对最大驱动力源区及天然气藏的连通关系、烃源岩、储层和隔层的连通关系及上古生界天然气的成藏特点进行研究,在此基础上,对鄂尔多斯盆地上古生界天然气藏的开发对策进行初步探讨。主要取得以下认识: ;晚白垩世以来地层剥蚀期最大驱动力源区分布在盆地西北部铁苏克庙地区及西南部的山城一带;现今构造定型阶段最大驱动力源区分布在盆地西北部铁苏克庙一带。 ,其连通性主要是通过裂缝实现的。其中,。,。。 (烃源岩层、泥岩隔层)具有良好的连通关系,其连通主要是通过裂缝实现的。 ,鄂尔多斯盆地上古生界天然气藏流体的驱动能量在区域上与盆地烃源岩最大驱动力源区有密切关系,储气层和烃源岩、隔层之间可以通过裂缝实现有效的连通。基于上述原因,天然气藏在开发过程中可从气藏以外的区域或与储气层连通的隔层或烃源岩中得到有效的补充。在制定气藏开发措施时,应充分考虑这种特点。关键词:鄂尔多斯盆地上古生界,天然气藏,最大驱动力源区,储层和隔层,裂缝 The Formation Characteristic ofNatural Gas inUpper Paleozoic ofOrdos Basin and Development Strategies Abstract Thisarticleisbased on geological data,logging and logdatainterpretation,and core,thin sections andporosity,permeability testandanalysis,to analyze thelargest depth of source rocks in lateearly Cretaceous,the denudation sinceofthe late Cretaceousand thebiggest driving force distribution ofthe source areainthe current construction phase,to analyze the distribution ofnatural gas inthebasin,todiscusses thebiggest driving force source and theconnectivity relations ofnatural gas and SOUrCerocks,reservoirs partments,based on theabove analysis,toanalyze the characteristicsof upper Paleozoic of Ordos Basin gas reservoir,and discuss development obtainedknowledge are asthe follows: area oflateearly Cretaceous source rocks ofthebiggest driving force SOUrCe inupper Paleozoic ofOrdos Basin ismaerzhuang—dabazui—duhoutan-jiayuan. The area ofthedenudation sinceof the lateCretaceous isTiesukemiao inthe northwest andshancheng areaofthebiggest driving force distribution oftheSOUrCeareainthe current construction phase isTiekesumiao inthe northwest. natural gas found