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楚雄盆地是我国南方重要的中生代沉积盆地，盆地具有烃源条件好、圈闭类型多、生储盖条件好、资源潜力大等特点，而成为滇黔桂地区中、古生代大型盆地中最有希望取得突破和发展的盆地。云龙凹陷位于楚雄盆地东缘隆后沉积区，其内古生界海相地层保留相对较完整。具有长期稳定沉降、海陆相烃源岩丰富、勘探目的层多、埋深适中等特点。中部断弯构造带圈闭发育、圈闭面积大、闭合度高、资源量大，是首选的有利勘探区带。

PETROLEUM GEOLOGICAL CHARACTERISTICS AND EXPLORATION TARGETS IN YUNLONG SEG OF CHUXIONG BASIN

Chuxiong Basin is an important Mesozoic sedimentary basin in South China. The basin is most hopeful of making a breakthrough and development in the large sized Mesozoic and Paleozoic basins in Dian Qian Gui region,because it is of such characteristics as fair hydrocarbon source conditions,multiple type traps,good source reservoir seal conditions and a large resource potential,etc. Yunlong Seg is located in the east edge behind the uplift sedimentary area of Chuxiong Basin,where the Paleozoic marine strata are relatively complete,being of the properties as long term stable subsidence,abundant marine continental source rocks,multiple exploration target zones and moderate burial depths,etc. The fault warping structural belt in the central part of the seg,where the traps are developed,being of big areas,high closures and large resources,is the first chosen beneficial exploration zone.