双河油田小型隐蔽油藏识别技术

Techniques for Identifying Mini Subtle Reservoirs in Shuanghe Oilfield

分析了双河油田小型隐蔽油藏形成的地质基础 ,指出小型隐蔽油藏与较大规模油藏的形成是同源同步的 ,它们是双河油田开发后期增储稳产的重要力量 ;在井网密度高、砂体控制程度高、动、静态资料丰富的基础上 ,提出了油田内部小型隐蔽油藏识别的 3种技术 :储层精细对比技术、小幅度构造圈闭评价技术、微圈闭评价技术 ,利用这些技术在双河油田识别隐蔽油藏的成功率在 95 %以上 ,增储2 33× 10 4t,累计生产原油 12 7× 10 4t。

Geological basis of forming mini subtle reservoirs in Shuanghe Oilfield is analyzed, it is pointed out that the formation of the mini subtle and large scale reservoirs is consanguineous and synchronous, they are important forces for inproved reserve and stabilized production during the late period of Shuanghe Oilfield development. On the basis of high density of well drilling, high extent of sandbody control, rich dynamic and static data, three types of techniques proposed for identifying mini subtle reservoirs within the oilfield include precision reservoir correlative technique, small structural trap evaluation techniques and micro-trap evaluation technique, by which the success rate of subtle reservoir identification is over 95% in Shuanghe Oilfield, reserve increase is 233 × 104 t, accumulated oil production is 12.7 × 104 t, thus obvious efficiency is achieved.