【摘要】 针对大港油田南部油区大多为复杂断块、多层系、稠油油藏,断块面积小且平面、层间、层内非均质性较强,目前大多进入高含水阶段,水驱效果逐渐变差的实际问题。通过采用井下人工地震技术,利用地震波产生的超声波,降低原油黏度,提高原油流动能力,在南部地区的王官屯油田和枣园油田的现场应用取得了显著效果,对改善高含水阶段的水驱效果,降低含水上升速度起到了积极作用。通过4口井、6次试验,累积增油8499t,投入产出比为1∶9.3,井下人工地震驱油技术为改善复杂断块稠油高含水油藏开发效果提供了新的技术手段,具有作用范围大,对油藏伤害小,投入产出比低等优点,是一项具有较好应用前景的采油技术。更多还原

【Abstract】 The south oil region of Dagang oil field is characterized by complicated fault block, multilayer system and heavy oil reservoirs. The size of the fault block reservoir is small with serious areal heterogeneity, interlamination heterogeneity and intralamination heterogeneity. Most of these reservoirs are in the high water cut stage and the waterflood feefct is becoming worse and worse, the artificial earthquake technology is applied to produce ultrasonic that it can decrease crude oil viscosity and improve the crude oil flow ability. The technology used in the Wangguantun and Zaoyuan oil field acquired the marked effectiveness, which improves the waterflood eefect in the high water cut stage, and slow down the ascending water -containing speed. By the six times experimentation with four wells , the summation of crude output is 8499t and the input/output ratio is 1 ∶9.3. The downhole artificial earthquake oil flooding technology supplies a kind of new technology for the complicated fault block, heavy oil reservoirs and high water cut reservoir development. The technology has many advantages, such as wide operation area, small degree of damage to reservoir and the low input/output ratio. The artificial earthquake oil flooding technology has a good future for oil production.更多还原