塔河地区S112-2井区志留系油藏主控因素分析及重要意义

SILURIAN OIL RESERVOIRS MAIN CONTROLLING FACTORS ANALYSIS AND THE IMPORTANT MEANING IN S112-2 WELL AREA OF TAHE

志留系柯坪塔格组柯三段是塔北地区重要含油层段,通过对S112-2井区油藏解剖,明确该区志留系油藏主控因素,即早期油藏破坏与晚期成藏并存、构造-地层削蚀不整合控藏.研究表明,地层削蚀不整合对油气疏导、次生孔隙形成具重要作用.进一步明确塔河南地区志留系勘探方向和思路,各层段尖灭线位置是核心,构造精细解释落实圈闭是勘探成功关键.结合沉积相特征,选择类似S112-2地层油气藏类型目标上钻,扩大塔河南地区勘探成果.

Silurian Kepingtage Ke three sections is an important group of oil layer in Tahe area,Based on anatomy of reservoir to the S 112-2 Well area,clearing Silurian oil reservoir controlling factors in this area,early reservoir damage and late accumulation coexist,structural-stratigraphic erosion unconformity control reservoir.The results show that stratigraphic erosion unconformity is an important role in divert oil and gas,the formation of secondary porosity.Which further clarified the Silurian direction and ideas of exploration in southern Tahe and accurately pointed out pinch line position is the core,structural detailed interpretation of the implementation of trap is the key to exploration success,on this basis, combined with sedimentary facies to choose a similar stratigraphic reservoirs of S112-2 type for drilling and expand the exploration results in southern Tahe.