安宁盆地位于云南省中部,东北距昆明市32公里,面积264平方公里,盆内为中生代河湖相碎屑岩和含盐岩系,厚约3000米。1982年,云南省地矿局钾盐队对该盆地进行钾盐勘探,在 ZK_1孔钻入上侏罗统安宁组泥质白云岩时发现油显示。当时可见棕黑色的原油从岩心中慢慢地向外渗出,散发出很浓的油味。随后在钾盐队所续钻的七口井中(截至1984年9月止)均见有不同程度的油显示。这八口井中,较好的为 ZK_5和 ZK_1孔,前者有17层含油,后者有9层含油。其它井含油2—5层不等。这些含油层位大多数集 Anning basin is located in the central part of Yunnan Province, 32 km northeast of Kunming City, an area of ​​264 square kilometers, the basin is Mesozoic lacustrine clastic rocks and salt rock series, about 3,000 meters thick. In 1982, the Potash team from Yunnan Bureau of Geology and Mineral Resources carried out potash exploration of the basin, and found oil when drilling into the Argunian Argillaceous dolomite at hole ZK_1. Visible at that time brownish brown crude oil from the core slowly outward, exudes a very rich flavor. Later, there were varying degrees of oil display in the seven wells drilled by the Potash team (as of September 1984). Among the eight wells, ZK_5 and ZK_1 are the preferred ones. The former has 17 levels of oil, and the latter has 9 levels of oil. Other wells ranging from 2-5 layers of oil. Most of these oil-bearing formations