中文摘要：

通过钻井资料和地震资料结合，对应岩相古地理背景，确定了孔二段残留盆地边界。应用碎屑岩矿物成熟度系数、碎屑重矿物稳定系数和泛克里金等3种方法对孔二段进行了原型盆地边界恢复。综合分析恢复结果，结合岩相古地理背景，最终确定出原型盆地边界。孔南地区孔二段地层沉积时期受沧东、徐西断层活动的影响，地层遭受强烈的改造，为受后期构造运动改造的盆地，原型盆地与残留盆地的边界差异很大，残留盆地明显缩小。

英文摘要：

Through the data integration of the wells and seismic achievements and corresponding the lithofacies palaeogeographie background, the borders of the residual basin in Kong No. 2 Member are confirmed. With the help of the following methods： maturation coefficient of elastic minerals, stability coefficient of elastic heavy minerals and Universal Kriging, the recovery of the borders of the primary basin in Kong No. 2 Member is conducted. By means of comprehensive analyzing the recovery results and integrating the lithofacies palaeogeographic background, the basin borders are finally determined. Influenced by the movements of Cangdong and Xuxi faults in the sedimen- tary age of Kong No. 2 Member in Kongnan area, the formations are greatly changed and result in catagenesis basins reformed by tectonic movement of later period ; the differences of the borders between the primary and residual basins are rather serious, the size of the later diminishes obviously.