塔中北斜坡下奥陶统鹰山组热液岩溶特征及发育模式
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摘要
塔中北斜坡下奥陶统鹰山组受热液改造强烈,来源于地壳深部富含CO2和H2S的热液流体沿断裂、不整合面等发生运移,并对其流经的碳酸盐岩围岩发生溶蚀及白云岩化,形成孔洞缝组合,极大地改善了储层的物性。热液岩溶识别标志为岩石热褪色、非选择性溶蚀、缝洞充填典型热液矿物、"树状扩散"、"层状叠合"的地震反射等特征。
The Yingshan formation,Lower-Ordovician of North Slope of Tazhong is strongly reformed by hydrothermal solution.Hydrothermal fluids from the deep crust,containing much CO2and H2S migrates along the fault and unconformity plane,corrodes and dolomizes the Carbonate rock flowing by.As a result,the assemblage of pores,holes and fractures is formed and the reservoir is greatly improved.Identification marks of hydrothermal karst are the rock heat bleaching,non-selective corrosion,fracture caves infilling of typical hydrothermal mineral and seismic reflection features of "tree-proliferation","layered composite",etc.
The Yingshan formation,Lower-Ordovician of North Slope of Tazhong is strongly reformed by hydrothermal solution.Hydrothermal fluids from the deep crust,containing much CO2and H2S migrates along the fault and unconformity plane,corrodes and dolomizes the Carbonate rock flowing by.As a result,the assemblage of pores,holes and fractures is formed and the reservoir is greatly improved.Identification marks of hydrothermal karst are the rock heat bleaching,non-selective corrosion,fracture caves infilling of typical hydrothermal mineral and seismic reflection features of "tree-proliferation","layered composite",etc.
引文
[1]Hedenquist J W,Henley R W.The Importance of CO2onFreezingpoint Measurements of Fluid Inclusions:Evidencefrom Active geochermal Systems and Implications forEpithermal ore Deposition[J].Econ Geol,1985,80:1379-1405.
[2]贾承造.盆地构造演化与区域构造地质[M].北京:石油工业出版社,1995.
[3]苌衡,张新艳,彭鑫岭.塔里木盆地塔中地区火成岩对油气勘探的影响[J].断块油气田,2003,10(1):5-8.
[4]陈汉林,贾承造.塔里木盆地地质热事件研究[J].科学通报,1997,42(10):1096-1099.
[5]陈红汉,李思田.活动热流体与成藏、成矿动力学研究进展[J].地学前缘,1996,3(4):259-262.
[6]Wigley T M,Plummer L N.Mixing of Carbonate Waters[J].Geochim Cosmochim Acta,1976,40:989-995.
[7]蔡春芳,梅博文,马亭,等.塔里木盆地有机酸来源、分布及对成岩作用的影响[J].沉积学报,1997,15(3):103-109.
[8]黎平,陈景山,王振字.塔中地区奥陶系碳酸盐岩储层形成控制因素及储层类型研究[J].天然气勘探与开发,2003,26(1):37-42.
[2]贾承造.盆地构造演化与区域构造地质[M].北京:石油工业出版社,1995.
[3]苌衡,张新艳,彭鑫岭.塔里木盆地塔中地区火成岩对油气勘探的影响[J].断块油气田,2003,10(1):5-8.
[4]陈汉林,贾承造.塔里木盆地地质热事件研究[J].科学通报,1997,42(10):1096-1099.
[5]陈红汉,李思田.活动热流体与成藏、成矿动力学研究进展[J].地学前缘,1996,3(4):259-262.
[6]Wigley T M,Plummer L N.Mixing of Carbonate Waters[J].Geochim Cosmochim Acta,1976,40:989-995.
[7]蔡春芳,梅博文,马亭,等.塔里木盆地有机酸来源、分布及对成岩作用的影响[J].沉积学报,1997,15(3):103-109.
[8]黎平,陈景山,王振字.塔中地区奥陶系碳酸盐岩储层形成控制因素及储层类型研究[J].天然气勘探与开发,2003,26(1):37-42.
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