人工地震驱油技术在断块稠油油藏中的应用
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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。
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 8499t 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.
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 8499t 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.
引文
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[3]周英杰,陈瑞.边底水稠油油藏蒸汽吞吐的开采特点及水驱作用分析[J].石油勘探与开发,1991,18(5):66-71.
[4]孙希敬.勘探历程与经验[M].北京:石油工业出版社,1999.
[5]高锡兴.黄骅拗陷石油天然气地质[M].北京:石油工业出版社,2004.
[6]孙希敬.第三系石油地质基础[M].北京:石油工业出版社,1999.
[7]张大德.大港油田开发若干问题的回顾与思考[M].北京:石油工业出版社,2002.
[8]王守春,李晓良,吕中锋,等.井下人工地震驱油技术在复杂断块油藏的应用[J].石油勘探与开发,2004,31(3):89-91.
[9]王仲茂.震动采油技术[M].北京:石油工业出版社,2000.
[10]张人玲,唐湘明.砂泥薄互层稠油边际油藏经济开发方式[J].石油勘探与开发,2004,31(1):100-102.
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