陆相湖盆致密油气储层研究中的几个关键问题

TE122; 陆相湖盆致密油气是中国非常规油气资源最为现实的重要类型之一,储层研究是实现其高效勘探开发的核心与关键.基于前期研究成果,以松辽盆地南部白垩系泉头组、鄂尔多斯盆地三叠系延长组及准噶尔盆地吉木萨尔凹陷二叠系芦草沟组等典型致密油气藏为例,厘定沉积成岩综合相的概念,形成沉积成岩综合相的测井识别技术,实现沉积成岩综合相的空间展布研究.结果 表明:致密油气储层储集物性极低,储集空间类型多样,发育微纳米级孔喉系统,孔喉连通性差;高压压汞、恒速压汞和核磁共振相结合,实现孔喉半径及分布的全面表征,原油优先充注于半径较大、连通性较好的原生孔隙中;将储层埋藏演化、成岩演化过程、物性演化过程与油气成藏过...

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Published in中国石油大学学报(自然科学版) Vol. 43; no. 5; pp. 11 - 20
Main Authors 操应长, 葸克来, 李克, 刘可禹, 朱如凯, 杨田
Format Journal Article
LanguageChinese
Published 中国石油大学(华东)深层油气重点实验室,山东青岛,266580%中国石油勘探开发研究院,北京10083 20.10.2019
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ISSN1673-5005
DOI10.3969/j.issn.1673-5005.2019.05.002

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Abstract TE122; 陆相湖盆致密油气是中国非常规油气资源最为现实的重要类型之一,储层研究是实现其高效勘探开发的核心与关键.基于前期研究成果,以松辽盆地南部白垩系泉头组、鄂尔多斯盆地三叠系延长组及准噶尔盆地吉木萨尔凹陷二叠系芦草沟组等典型致密油气藏为例,厘定沉积成岩综合相的概念,形成沉积成岩综合相的测井识别技术,实现沉积成岩综合相的空间展布研究.结果 表明:致密油气储层储集物性极低,储集空间类型多样,发育微纳米级孔喉系统,孔喉连通性差;高压压汞、恒速压汞和核磁共振相结合,实现孔喉半径及分布的全面表征,原油优先充注于半径较大、连通性较好的原生孔隙中;将储层埋藏演化、成岩演化过程、物性演化过程与油气成藏过程相结合,建立成岩-油气成藏系统,划分“先成藏,后致密”和“先致密,后成藏”两种致密油气藏类型;“先成藏,后致密”型致密砂岩油气储层,成藏期储层物性好,现今为大孔细喉特征,孔隙度是储层评价的较优参数;“先致密,后成藏”型致密砂岩油气储层,成藏期储层物性差,现今为小孔细喉的特征,储层品质指数可以作为储层评价的关键参数.在此基础上结合储层有效性控制因素,采用灰色关联分析,形成致密油气定量评价分类方法.
AbstractList TE122; 陆相湖盆致密油气是中国非常规油气资源最为现实的重要类型之一,储层研究是实现其高效勘探开发的核心与关键.基于前期研究成果,以松辽盆地南部白垩系泉头组、鄂尔多斯盆地三叠系延长组及准噶尔盆地吉木萨尔凹陷二叠系芦草沟组等典型致密油气藏为例,厘定沉积成岩综合相的概念,形成沉积成岩综合相的测井识别技术,实现沉积成岩综合相的空间展布研究.结果 表明:致密油气储层储集物性极低,储集空间类型多样,发育微纳米级孔喉系统,孔喉连通性差;高压压汞、恒速压汞和核磁共振相结合,实现孔喉半径及分布的全面表征,原油优先充注于半径较大、连通性较好的原生孔隙中;将储层埋藏演化、成岩演化过程、物性演化过程与油气成藏过程相结合,建立成岩-油气成藏系统,划分“先成藏,后致密”和“先致密,后成藏”两种致密油气藏类型;“先成藏,后致密”型致密砂岩油气储层,成藏期储层物性好,现今为大孔细喉特征,孔隙度是储层评价的较优参数;“先致密,后成藏”型致密砂岩油气储层,成藏期储层物性差,现今为小孔细喉的特征,储层品质指数可以作为储层评价的关键参数.在此基础上结合储层有效性控制因素,采用灰色关联分析,形成致密油气定量评价分类方法.
Author 朱如凯
李克
葸克来
杨田
刘可禹
操应长
AuthorAffiliation 中国石油大学(华东)深层油气重点实验室,山东青岛,266580%中国石油勘探开发研究院,北京10083
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CAO Yingchang
LIU Keyu
LI Ke
ZHU Rukai
YANG Tian
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物性
陆相湖盆
致密砂岩
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