酒泉盆地构造—地层油气藏勘探研究
|
摘要
酒泉盆地中生代为拉张断陷盆地发展阶段,形成了一系列NNE向东断西超的早白垩世次级凹陷,表现为中国东部断陷湖盆的特征,具备形成构造—地层(岩性)油气藏的地质背景。以往的油气勘探主要针对构造油气藏,虽获得一些重大发现,但近年勘探效果并不理想。文中针对该区储层非均质性强、地震资料品质差的特点,充分利用钻井资料,采用地震属性分析、水平切片、倾角测井和成像测井、层序地层学等技术对青西、营尔两个凹陷的构造—地层油气藏进行了勘探、研究。通过精细的断块构造解释和沉积相、储层预测,发现了一批构造—地层圈闭,分别在青西凹陷、营尔凹陷优选出YX1、C3两口区域探井,经钻探均获商业油流,使酒泉盆地构造—地层油气藏勘探取得突破。
The Mesozoic of Jiuquan basin was in developed stage of extensional fault basin,forming a series of NNE Early Cretaceous secondary sags characterized by fault in east and overlap in west and having the feature of east fault lake basin and geologic background of tectonic-stratigraphic (lithologic) reservoir.The targets of former oil/gas exploration were structural reservoirs,which was not ideal in recent exploration,although achieved some important results.In view of such technical difficulties as strong heterogeneity of reservoirs and poor quality of seismic data,the paper fully used drilling data and adopted such techniques as analysis of seismic attributes,horizontal slices,inclination logging and imaging logging,and sequence-stratigraphy in exploration and study of tectonic-stratigraphic reservoirs of two sags: Qingxi and Ying'er,which discovered a lot of tectonic-stratigraphic traps by fine interpretation of fault-block structures and prediction of sedimentary facies and reservoirs,where two regional prospecting wells,YX1 and C3,were optimally settled in Qingxi sag and Ying'er sag respectively and commercial oil flow was gained after drilling.The breakthrough has been made in tectonic-stratigraphic reservoir prospecting of Jiuquan basin.
The Mesozoic of Jiuquan basin was in developed stage of extensional fault basin,forming a series of NNE Early Cretaceous secondary sags characterized by fault in east and overlap in west and having the feature of east fault lake basin and geologic background of tectonic-stratigraphic (lithologic) reservoir.The targets of former oil/gas exploration were structural reservoirs,which was not ideal in recent exploration,although achieved some important results.In view of such technical difficulties as strong heterogeneity of reservoirs and poor quality of seismic data,the paper fully used drilling data and adopted such techniques as analysis of seismic attributes,horizontal slices,inclination logging and imaging logging,and sequence-stratigraphy in exploration and study of tectonic-stratigraphic reservoirs of two sags: Qingxi and Ying'er,which discovered a lot of tectonic-stratigraphic traps by fine interpretation of fault-block structures and prediction of sedimentary facies and reservoirs,where two regional prospecting wells,YX1 and C3,were optimally settled in Qingxi sag and Ying'er sag respectively and commercial oil flow was gained after drilling.The breakthrough has been made in tectonic-stratigraphic reservoir prospecting of Jiuquan basin.
引文
[1]潘良云等.酒泉盆地中新生代区域构造演化与油气勘探.石油与天然气地质,2006,27(1):62~69
[2]赵应成.酒西盆地含油气系统与油气勘探方向.石油实验地质,1998,20(4):362~367
[3]陈建平等.酒西盆地油气形成与勘探方向新认识(一)——基本石油地质条件及生油潜力.石油勘探与开发,2001,28(1):19~22
[4]杜金虎等.二连盆地岩性(地层)油藏形成条件与油气分布规律.中国石油勘探.北京:石油工业出版社,2004
[5]常亮等.二连盆地巴音都兰凹陷巴Ⅱ构造隐蔽油藏的发现.石油勘探与开发,2002,29(4):60~62
[6]李宏伟等.辽河西部凹陷北部地区隐蔽油气藏预测与成藏机制分析.石油勘探与开发,2003,30(1):44~46
[7]李群.松辽盆地长岭凹陷隐蔽油气藏勘探研究.地球科学(中国地质大学学报),2002,27(6):770~774
[8]李建雄等.断陷湖盆层序地层学解释与隐蔽油气藏勘探.石油地球物理勘探,2004,39(5):607~613
[9]李强等.层序地层学在松辽盆地他拉哈地区隐蔽油气藏勘探中的应用.现代地质,2005,19:203~206
[10]刘招君.陆相层序地层学理论与应用.北京:石油工业出版社,2002
[11]薛良清.湖相盆地中的层序、体系域与隐蔽油气藏.石油与天然气地质,2002,23(2):115~120
[12]蒲仁海.断陷湖盆层序地层学的几点进展.石油与天然气地质,2002,23(4):410~413
[13]沈守文等.层序地层学预测隐蔽油气藏的原理和方法.地球学报,2000,21(3):300~305
[14]娄占伟等.营尔凹陷层序地层研究.现代地质,2005,19(4)563~569
[2]赵应成.酒西盆地含油气系统与油气勘探方向.石油实验地质,1998,20(4):362~367
[3]陈建平等.酒西盆地油气形成与勘探方向新认识(一)——基本石油地质条件及生油潜力.石油勘探与开发,2001,28(1):19~22
[4]杜金虎等.二连盆地岩性(地层)油藏形成条件与油气分布规律.中国石油勘探.北京:石油工业出版社,2004
[5]常亮等.二连盆地巴音都兰凹陷巴Ⅱ构造隐蔽油藏的发现.石油勘探与开发,2002,29(4):60~62
[6]李宏伟等.辽河西部凹陷北部地区隐蔽油气藏预测与成藏机制分析.石油勘探与开发,2003,30(1):44~46
[7]李群.松辽盆地长岭凹陷隐蔽油气藏勘探研究.地球科学(中国地质大学学报),2002,27(6):770~774
[8]李建雄等.断陷湖盆层序地层学解释与隐蔽油气藏勘探.石油地球物理勘探,2004,39(5):607~613
[9]李强等.层序地层学在松辽盆地他拉哈地区隐蔽油气藏勘探中的应用.现代地质,2005,19:203~206
[10]刘招君.陆相层序地层学理论与应用.北京:石油工业出版社,2002
[11]薛良清.湖相盆地中的层序、体系域与隐蔽油气藏.石油与天然气地质,2002,23(2):115~120
[12]蒲仁海.断陷湖盆层序地层学的几点进展.石油与天然气地质,2002,23(4):410~413
[13]沈守文等.层序地层学预测隐蔽油气藏的原理和方法.地球学报,2000,21(3):300~305
[14]娄占伟等.营尔凹陷层序地层研究.现代地质,2005,19(4)563~569
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心