塔河油田奥陶系碳酸盐岩油气藏石油地质条件

塔河油田奥陶系碳酸盐岩油气藏的发现。充分展示了在塔里木盆地寻找特大型油气藏的广阔前景。通过对该区钻井，地质及化验分析和测试等资料综合研究后指出，三面逢源，油气供给充沛；孔，洞，缝是良好的储集网络空间；盖层叠合，层层封盖遮挡条件好；良好圈闭；断裂与储集层是油气运移通道；后期改造破坏较小，保存条件良好等等是形成塔河油田的基本石油地质条件。

The Basic Petroleum Geology Conditions for Formation of Ordovician Carbonate Reservoir in Tahe Oilfield,Tarim Basin

The discovery of Ordovician carbonate reservoir in Tahe oilfield foreshowed that Tarim basin has bright prospect of searching for giant oil-gas pools.This paper comprehensively studied various data such as drilling,geology,lab analysis and experiment or testing,and pointed out that the basic petroleum geologic conditions for forming Tahe oil-field include:source rocks around three sides indicates abundant hydrocarbon supply;pores,caves and fissures are good places of reservoir network;cap rocks superposition each other shows good sealing and screened conditions;the trapping condition is good;faulting and reservoir are channels for oil-gas migration;and reconstruction and damage in late period are smaller,conservative conditions are better,etc.