冀中地区砂岩油藏厚油层特征及潜力分布形式

CHARACTERISTICS OF THE THICK OIL FORMATION OF SANDSTONE OIL RESERVOIR IN JIZHONG REGION AND A MODEL OF PRODUCTION POTENTIAL DISTRIBUTION.

通过对冀中地区砂岩油藏厚油层特征的研究，总结出其主要的沉积类型为三角洲前缘相的河口砂坝和滨浅湖相的沿岸滩坝砂。由于沉积方式的不同，各种类型的厚油层层内非均质性及其表现形式有着明显的差异性。采用地质静态和开采动态研究相结合的方法，分析了厚油层层内动用状况及在平面上的分布特点，为油田中后期的调整挖潜指明了方向。

Through a study of the basic characteristics of the thick sandstone oil formation in Jizhong region, it is shown that the main sedimentary types of thick oil formation in this area are river mouth bar of delta front and beach bar of shallow-lake factes. Because of the difference of deposital facture, the intraformational heterogenities and properties of these two types of thick oil formations are different. In order to analyse the intraformational production performance and the distribution model of intraformational as well as planar production potentiality, a 'combain dynamic and static condition' method has been used, all results put forward in this paper are useful for pointing the correct direction of mid-late stage / adjustment and rejuvenation of oil field.