小草湖洼陷西山窑组油气成藏特征及主控因素
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摘要
小草湖洼陷紧邻生油洼陷,随着研究的深入,勘探层系由中侏罗统三间房组向西山窑组拓展,油气藏类型由构造型向构造-岩性型转变,基于高分辨层序地层分析,综合应用钻井测井、地震资料及分析测试等成果,系统开展油气成藏特征及主控因素分析。研究表明,该区油气成藏受控于构造、岩性、断层三重因素,南北向左旋走滑断层为油气运移提供了良好的通道,辫状河三角洲水下分流河道控制着储集层砂体的平面分布,晚燕山及早喜山期古构造控制油气的运聚及规模;红台—大步构造带东段剩余圈闭多,油气运聚系统良好,砂体发育,是下一步勘探的主要方向。
Xiaocaohu Depression is located in the vicinity of oil- generation depression. The exploration strata have been extended from the Middle Jurassic Sanjianfang Fm to Xishanyao Fm,and from structural reservoir to structural- lithologic reservoir. Based on high- resolution sequence stratigraphy analysis,the drilling,logging,seismic and test data are combined to systematically analyze hydrocarbon accumulation characteristics and main controlling factors. Research shows that hydrocarbon accumulation in this area is mainly controlled by structure,lithology and fault. NS left- lateral strike- slip faults provide favorable channel for hydrocarbon transport,braided- river deltaunderwater distributary channels control the plane distribution of reservoir sandbody,and Late Yanshanian and Early Himalayan palaeo- structures control the hydrocarbon migration,accumulation and scale. There are many remaining traps in the eastern Hongtai- Dabu structural belt with favorable hydrocarbon migration and accumulation and well- developed sandbody,which is the main target of further exploration.
Xiaocaohu Depression is located in the vicinity of oil- generation depression. The exploration strata have been extended from the Middle Jurassic Sanjianfang Fm to Xishanyao Fm,and from structural reservoir to structural- lithologic reservoir. Based on high- resolution sequence stratigraphy analysis,the drilling,logging,seismic and test data are combined to systematically analyze hydrocarbon accumulation characteristics and main controlling factors. Research shows that hydrocarbon accumulation in this area is mainly controlled by structure,lithology and fault. NS left- lateral strike- slip faults provide favorable channel for hydrocarbon transport,braided- river deltaunderwater distributary channels control the plane distribution of reservoir sandbody,and Late Yanshanian and Early Himalayan palaeo- structures control the hydrocarbon migration,accumulation and scale. There are many remaining traps in the eastern Hongtai- Dabu structural belt with favorable hydrocarbon migration and accumulation and well- developed sandbody,which is the main target of further exploration.
引文
[1]刘俊田,靳振家,李在光,等.小草湖地区岩性油气藏主控因素分析及油气勘探方向[J].岩性油气藏,2007,19(3):44-47.
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[11]刘震,赵政璋,赵阳,等.含油气盆地岩性油气藏的形成和分布特征[J].石油学报,2006,27(1):17-23.
[12]黄云峰,杨占龙,郭精义,等.地震属性分析及其在岩性油气藏勘探中的应用[J].天然气地球科学,2006,17(5):739-742.
[13]陈启林,杨占龙.岩性油气藏勘探方法与技术[J].天然气地球科学,2006,17(5):622-626.
[14]易士威,王权.岩性地层油气藏勘探思路与勘探方法[J].中国石油勘探,2005,10(2):9-14.
[2]袁明生.吐哈盆地油气分布特征及勘探方向[J].新疆石油地质,1998,19(2):106-111.
[3]韩成,左新玉.吐哈盆地小草湖洼陷低孔隙度低渗透率储层测井评价[J].测井技术,2006,30(6):519-522.
[4]贾承造,赵文智,邹才能,等.岩性地层油气藏地质理论与勘探技术[J].石油勘探与开发,2007,34(3):257-272.
[5]贾承造,赵文智,邹才能,等.岩性地层油气藏勘探研究的两项核心技术[J].石油勘探与开发,2004,31(3):3-9.
[6]邹才能,陶士振,薛叔浩.“相控论”的内涵及其勘探意义[J].石油勘探与开发,2005,32(6):7-12.
[7]赵文智,方杰.不同类型断陷湖盆岩性地层油气藏油气富集规律[J].石油勘探与开发,2007,34(2):129-134.
[8]沈守文,彭大钧,颜其彬,等.层序地层学预测隐蔽油气藏的原理和方法[J].地球学报,2000,21(3):300-305.
[9]袁剑英,刘全新,卫平生,等.西北地区岩性地层油气藏勘探[J].天然气工业,2005,25(增刊B):17-20.
[10]李在光,刘俊田,杨占龙,等.台北凹陷红台-疙瘩台地区含油气检测[J].新疆石油地质,2006,27(4):446-448.
[11]刘震,赵政璋,赵阳,等.含油气盆地岩性油气藏的形成和分布特征[J].石油学报,2006,27(1):17-23.
[12]黄云峰,杨占龙,郭精义,等.地震属性分析及其在岩性油气藏勘探中的应用[J].天然气地球科学,2006,17(5):739-742.
[13]陈启林,杨占龙.岩性油气藏勘探方法与技术[J].天然气地球科学,2006,17(5):622-626.
[14]易士威,王权.岩性地层油气藏勘探思路与勘探方法[J].中国石油勘探,2005,10(2):9-14.
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