塔里木盆地下古生界碳酸盐岩油气勘探对策

塔里木盆地下古生界碳酸盐岩中的油气藏的宏观外部形态似为层状或块状，实际其内部结构是由断裂和裂缝把孔，洞（多为溶蚀孔，洞）连接起的储集空间系统中网络状的油气聚集。具有超常的非均质性，因而在油气富集区带之内，在油气田之内打出一些低产井，产水井，不要轻易否定区带的资源潜能，放弃勘探，注重保护油层技术，是实现高产的关键，大型的酸化压裂对油气层改造，是获得高产并稳产的另一关键。以这种概念和观点才能客观地认识这一领域的油气资源前景和做出正确的勘探决策，尽快探明大油气田。在现有勘探成果的基础上在这个领域中可以划分出5个主要的成藏组合，11个有利的成藏区，16个有利的勘探区带，其中轮南，塔中，英买力以及塔河是当前最现实，最有利的勘探地区。

Strategy for Exploration of Carbonate Reservoir of Lower Paleozoic in Tarim Basin

The petroleum reservoirs in Lower Paleozoic carbonate rocks in Tarim basin occur as layered or massive shapes in its exterior configuration,but in fact its interior structures are composed of faults and fractures which connect with pores and cavities,forming network-like petroleum system.And they are characterized by abnormal heterogeneity.Therefore,don't blindly negate resource potential or abandon petroleum prospect only due to low-productivity wells and water producing wells drilled within hydrocarbon-enriched domain or oil-gas fields.To pay attention to technology of payzone protection is the key for high production.And large scale acid fracture treatment of the reservoirs is an other key for high and steady production.It is the only way for understanding of the resource potential in this area and for making proper decision for identifying giant oil/gas fields as early as possible.According to available exploratory results herein,the domain can be classified into5reservoir assemblages,11favorable pool-forming zones and16favorable blocks for hydrocarbon prospect,of which Lunnan,Tazhong,Yingmaili and Tahe would be as the most favorable areas.