东营凹陷烃源岩超压体系特征及勘探意义Characteristics of over-pressure system in source rocks of Dongying Depression and its exploration significance
陈中红,查明
CHEN Zhong- hong;et al.(University of Petroleum;
摘要(Abstract)：
东营凹陷下第三系烃源岩中普遍发育异常高压,根据对超压体系的地球化学行为分析后认为压实不均衡是形成沙三中异常高压的主要原因,生烃作用是形成沙四上超压的主要机制,而沙三下同时具备压实不均衡及生烃作用的双向增压效应。断裂沟通的砂岩体及构造背斜等是有利的勘探目标,超压泥岩体周围的透镜状砂体是隐蔽油气藏的潜在目标。
There exists over- pressure abroad in the source rocks in the Paleogene system,Dongying Depression.The over- pressure distributes mainly at the middle part and lower part of the Member 3 and the upper part of the Member 4 of Shahejie Formation.The characteristics of geochemistry in the over- pressure are that the over- pressure in the middle part of the Member 3 was caused by unequlibrium compaction,the over- pressure in the lower part of the Member 3 resulted from hydrocarbon generation, and the formation of the over- pressure in the upper part of the Member 4 was a result of both the unequlibrium compaction of source rocks and the hydrocarbon generation.The over- pressure systems form over- pressure fluid compartments (OPC),which control the hydrocarbon migration and accumulation.Episodic hydrocarbon- expulsion of OPC is very important for the formation of the oil and gas reservoirs in Dongying Depression. The sandstone bodies and anticlines communicated by faults are favorable exploration targets, and the enwrapped sandstone by the over- pressure source rocks is latent objects for oil exploration.
关键词(KeyWords)：
东营凹陷;烃源岩;超压;地球化学;勘探
Dongying Depression;source rocks;over- pressure;geochemistry;exploration
基金项目(Foundation):
作者(Authors):
陈中红,查明
CHEN Zhong- hong;et al.(University of Petroleum;
参考文献(References)：
- [1]袁 静,赵澄林,张善文 东营凹陷沙四段盐湖的深水成因模式[J] 沉积学报,2000,18(1):114 118
- [2]郑和荣,黄永玲,冯有良 东营凹陷下第三系地层异常高压体系及其石油地质意义[J] 石油勘探与开发,2000,27(4):67 70
- [3]刘晓峰,解习农 东营凹陷流体压力系统研究[J] 地球科学,2003,28(1):78 85
- [4]解习农,刘晓峰 超压盆地流体动力系统与油气运聚关系[J]矿物岩石地球化学通报,2000,19(2):103 107
- [5]郑和荣,黄永玲,冯有良 东营凹陷下第三系地层异常高压体系及其石油地质意义[J] 石油勘探与开发,2000,27(4):67 70
- [6]邱桂强,凌云,樊洪海 东营凹陷古近系烃源岩超压特征及分布规律[J] 石油勘探与开发,2003,30(3):71 75
- [7]陈中红,查明,王克,等 烃源岩生排烃研究方法进展[J] 地学前缘,2003,10(3):86
- [8]XIEXN,BETHKECM,LIST,etal OverpressureandpetroleumgenerationandaccumulationintheDongyingdepressionoftheBohaiwanBasin[J] Geofluids,2001,1:257 271
- [9]LUOXR,VASSEURG Contributionsofcompactionandaquathermalpressuringtogeopressureandtheinfluenceofenvironmentalconditions[J]AAPGBulletin,1992,76:1550 1559
- [10]OSBORNEMJ,SWARBRICKRE Mechanismsforgeneratingoverpressureinsedimentarybasins:areevaluation[J] AAPGBulletin,1997,81:1023 1041
- [11]SHIYL,WANGCY Porepressuregenerationinsedimentarybasins:overloadingversusaquathermal[J] JournalofGeophysicalResearch,1986,91:2153 2162
- [12]陈中红,查明,曲江秀 沉积盆地超压体系油气成藏条件及机理[J] 天然气地球科学,2003,14(2):97 102
- [13]王明明,谯汉生,胡见义 东营凹陷牛庄—六户地区高压油气藏成因与分布[J] 石油勘探与开发,1990,17(2):13 21
- [14]李春光 试论东营盆地高压油气藏的特征及找油意义[J] 石油学报,1992,13(1):37 43
- [15]刘晓峰 超压传递:概念和方式[J] 石油实验地质,2002,24(6):533 536