大池干井构造带嘉二~2储层特征及有利区预测

川东大池干井构造带嘉二2储层已成为目前油气勘探的重点层位,通过对储层沉积特征、物性、受控因素等的综合研究,发现嘉二2储层以晶间孔、溶孔为主,储层为裂缝―孔隙型。嘉二2储层可划分为4类,该区以 类储层为主, 、 类储层在地层剖面上呈局部分布,形成1～2个高孔层段。储集物性主要受沉积相带及溶蚀和白云岩化作用的控制。通过储层横向预测,发现麦南构造和陡翼断层下盘的磨盘―老湾潜伏构造储层较发育,是大池干井构造带下一步勘探及井位部署的重点区域。

RESERVOIR CHARACTERISTICS AND PREDICTION OF FAVORABLE REGIONS OF T1j22 IN DACHIGANJING STRUCTURAL BELT

Presently the T_(1)j~2_2 stratum have become the important stratum of oil and gas exploration in Dachiganjing structural belt of east Sichuan, through comprehensive researches of reservoir sedimentary feature、 reservoir physical property、reservoir influential factor and reservoir prediction, we find that the T_(1)j~2_2 reservoir pore spaces were dominated by crystal-to-crystal pores and corrosion pores, and the reservoir type was defined as fracture-pore type. The reservoirs were classified in four types, a...