文西断裂带高分辨率层序地层学特征
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摘要
应用高分辨率层序地层学理论与方法,通过岩性剖面、测井曲线、地震剖面等资料进行层序边界识别,将该区主要含油层系沙二下、沙三上和沙三中亚段划分为4个层序27个准层序组。准层序叠加样式有基准面上升、可容空间增大时的三角洲前缘、前三角洲沉积,基准面旋回下降、可容空间减小时的前三角洲、三角洲前缘沉积,基准面上升、可容空间增大时的漫湖沉积,基准面下降、可容空间减小时的漫湖沉积。准层序组层序叠加样式包括退积—进积对称型、进积非对称型和退积非对称型。建立了3种层序模式:地垒带层序地层学模式、断阶带层序地层学模式和地堑带层序模式。
Applying the high resolution sequence stratigraphic theory and method,carrying on sequence border distinguish with lithological section,well logging profiles and seismic data ,the fundmental oil-bearing of this region,which the lower part of the member 2(Es_2) 、the upper and middle part of the member 3(Es_3) of the Shahejie Formation, have been identified 4 sequences and 27 penesequence suites .Penesequence upgrading styles inclusion delta front sedimentation,prodelta sedimentation and flood plain sedimentation when base level ascend,capacitiable volume increase and base level fall,capacitiable volume decrease .Penesequence suites upgrading styles holds overlap-onlap symmetric form,onlap asymmetric form and overlap asymmetric form . Founded three bed succession types: horst zone,fault zone of fracture stratigraphic forms and graben zone sequence.
Applying the high resolution sequence stratigraphic theory and method,carrying on sequence border distinguish with lithological section,well logging profiles and seismic data ,the fundmental oil-bearing of this region,which the lower part of the member 2(Es_2) 、the upper and middle part of the member 3(Es_3) of the Shahejie Formation, have been identified 4 sequences and 27 penesequence suites .Penesequence upgrading styles inclusion delta front sedimentation,prodelta sedimentation and flood plain sedimentation when base level ascend,capacitiable volume increase and base level fall,capacitiable volume decrease .Penesequence suites upgrading styles holds overlap-onlap symmetric form,onlap asymmetric form and overlap asymmetric form . Founded three bed succession types: horst zone,fault zone of fracture stratigraphic forms and graben zone sequence.
引文
1 邓宏文,王红亮·高分辨率层序地层学———原理及应用·北京:地质出版社,2002
2 陈发亮,朱晖,李绪涛·东濮凹陷下第三系沙河街组层序地层划分及盐岩成因探讨·沉积学报,2000,18(3):384~388
3 郑鸿稳·东濮凹陷下第三系层序地层学模式·石油学报,2002,23(4):24~28
4 李健,王德仁,白兴盈·东濮凹陷沙三3-4层序地层与沉积体系分析·石油与天然气地质,2001,22(2):161~164
2 陈发亮,朱晖,李绪涛·东濮凹陷下第三系沙河街组层序地层划分及盐岩成因探讨·沉积学报,2000,18(3):384~388
3 郑鸿稳·东濮凹陷下第三系层序地层学模式·石油学报,2002,23(4):24~28
4 李健,王德仁,白兴盈·东濮凹陷沙三3-4层序地层与沉积体系分析·石油与天然气地质,2001,22(2):161~164
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