拖市油田提高储量动用程度挖潜增产研究

On Enhancing Utilization Degree of Oil Reserves to Excavate Some Reservoir Potentials and Increase Oil Productivity in Tuoshi Oilfield

拖市油田尚未投入开发的三个区块原油地质储量占该油田总地质储量的30%,有进一步滚动开发增产的潜力。对该油田的地质构造、储层、沉积微相和砂体展布进行综合研究后,可以得出以下结论:1)水下分流河道及河口坝微相为拖市油区的有利沉积相带;2)总3井区拖18井区南部及拖26井区为下一步滚动开发的有利目标区带,预计可新增动用储量22%。

The OOIP of the three undeveloped blocks account for 30% of total oil reserves in Tuoshi Oilfield, so they have potentials to increase productivity by further rolling development. This paper conducts some integrated researches on geologic structures, reservoirs, sedimentary microfacies and distribution of sand bodies in Tuoshi Oilfield and concludes that dirty underwater bifurcating river mouth bay microfacies are favorable sedimentary facies in Tuoshi Oilfield, and that, according to the data from Wellblock Zong--3, the south of Wellblock 18 and Wellblock , are favorable target blocks of next Tuo--26, which are predicted to bring out utilization reserves of 220% rolling development.