安塞油田长6油层深盆油初探

方法 借鉴国外深盆油气勘探开发的成功模式，对陕甘宁盆安塞油国进行了“深盆油”的初步研究工作。目的 重新认识和评价那些废弃的区带和层系，寻找深盆油气藏。结果 通过对安塞油田的沉积背景、储怪特征和渍水分布的分析，认为安塞油田长６油层内油水分布较为复杂，在横向连续储层内，可出现油水关系倒置现象的深盆油圈闭，从储层角度看，属非均质低渗透相对圈闭油藏；从深盆油气观点看，属一种动态的圈闭油藏。结论 安塞油田深

Preliminary study on the deep basin oil of Chang 6 reservoir Ansai oil field.

MethodPreliminary study on the deep basin oil of Ansai oil field, Shanganning basin was carried out based upon the successful experience on deep basin hydrocarbon exploration and development of abroad.PurposeReevaluate the ignored zones and layers in order to discover more deep basin hydrocarbon. ResultThrough the analysis of sedimentary reservoir characteristics and oilwater distribution, it is considered that the oil water distribution of Chang6 reservoir, Ansai oil field is rather complex. Within the laterally continued reservoir, deep basin oil entrapment is presented with oil water inversion. From the view point of reservoir, it goes to the catagory of heterogeneous, low permeable and relative entrapment reservoir. From the view point of deep basin hydrocarbon, it goes to the catagory of dynamic reservoir.ConclusionThe evidence of the existence of deep basin oil in Ansai oil field widens the oil discovery realm. Therefore, exploration in the vicinity of known reservoir is promising.