永进地区隐蔽油气藏成藏主控因素
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摘要
准噶尔盆地腹部永进地区位于车莫古隆起南翼,受车莫古隆起的控制,在白垩—侏罗系不整合面之下广泛发育地层、地层—岩性型隐蔽圈闭,研究此类油气藏形成的主控因素十分必要。对该区隐蔽油气藏成藏主控因素研究的结果认为:车莫古隆起对油气藏的聚集和调整以及优质高效储层的发育都起着关键的控制作用;断层、砂体、不整合面构成了油气立体输导格架,控制着该区隐蔽油气藏的分布。在以上认识的基础上,以沉积模式、成藏模式为指导,综合应用地震属性分析、测井约束反演等技术手段,确定了不整合面下地层剥蚀线的展布范围、有利储集相带和砂体的展布规律。
Yongjin area in the central Junggar basin is located on the south limb of Chemo paleohigh. Stratigraphic and stratigraphic-lithologic subtle traps are extensively developed below the Cretaceous-Jurassic unconformity due to the control of Chemo paleohigh. Therefore, it is very important to study the main factors controlling the formation of these hydrocarbon reservoirs. The study reveals that Chemo paleohigh played a key role in controlling the accumulation and adjustment of hydrocarbons and the development of reservoirs with high quality and efficiency, and the stereo pathway framework composed of faults, sandbodies and unconformities controls the distribution of the subtle reservoirs in the study area. Based on these understandings, the distribution area of erosional line of the formations underlying unconformities and the distribution patterns of favorable reservoir facies belts and sandbodies are defined by integrating seismic attribute analysis and log-constrained inversion and under the guidance of depositional models and hydrocarbon pooling models.
Yongjin area in the central Junggar basin is located on the south limb of Chemo paleohigh. Stratigraphic and stratigraphic-lithologic subtle traps are extensively developed below the Cretaceous-Jurassic unconformity due to the control of Chemo paleohigh. Therefore, it is very important to study the main factors controlling the formation of these hydrocarbon reservoirs. The study reveals that Chemo paleohigh played a key role in controlling the accumulation and adjustment of hydrocarbons and the development of reservoirs with high quality and efficiency, and the stereo pathway framework composed of faults, sandbodies and unconformities controls the distribution of the subtle reservoirs in the study area. Based on these understandings, the distribution area of erosional line of the formations underlying unconformities and the distribution patterns of favorable reservoir facies belts and sandbodies are defined by integrating seismic attribute analysis and log-constrained inversion and under the guidance of depositional models and hydrocarbon pooling models.
引文
[1]邹华耀,郝芳,鲍志东,等.准噶尔盆地中部Ⅰ区块及其周缘油气充注史与成藏模式[M]∥牟书令主编.中国石化西部新区勘探论文集.北京:石油工业出版社,2004:62-69.
[2]张年富,齐雪峰,王英民,等.准噶尔盆地侏罗系Ⅲ层底界上下砂体预测与有利区评价[J].石油与天然气地质,2002,23(2):145-149.
[3]朱成宏,黄国骞,秦瞳,等.断裂系统精细分析技术[J].石油物探,2002,41(1):42-48.
[4]张洪波,王伟.高精度地震属性储存预测技术研究[J].天然气工业,2005,25(7):35-37.
[5]凌云研究组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探,2003,38(6):642-653.
[6]徐旺林,庞雄奇.储层测井特征属性反演方法[J].天然气工业,2005,25(3):52-54.
[2]张年富,齐雪峰,王英民,等.准噶尔盆地侏罗系Ⅲ层底界上下砂体预测与有利区评价[J].石油与天然气地质,2002,23(2):145-149.
[3]朱成宏,黄国骞,秦瞳,等.断裂系统精细分析技术[J].石油物探,2002,41(1):42-48.
[4]张洪波,王伟.高精度地震属性储存预测技术研究[J].天然气工业,2005,25(7):35-37.
[5]凌云研究组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探,2003,38(6):642-653.
[6]徐旺林,庞雄奇.储层测井特征属性反演方法[J].天然气工业,2005,25(3):52-54.
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