利用测井地震资料预测塔中油田碳酸盐岩储集层
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摘要
碳酸盐岩储集层缝洞发育,非均质性强,储层横向预测需要综合测井、地震和试油等资料。利用声电成像测井新技术及资料(特别是电成像、偶极横波等新技术资料)只能精细描述井周储层缝洞发育程度和裂缝走向;沿主裂缝走向作地震剖面寻找异常储集体(俗称"串珠")是目前物探解释的亮点,平面地震波均方根振幅和沿层相干属性切片是预测岩溶带横向展布的重要手段。这种测井和地震(井震)资料相结合的储层横向预测技术应用到塔中油田I号坡折带奥陶系储层初见成效,在多口井中获得了日产百吨以上的高产油气流,已找到和验证了多个有利勘探区域。
Carbonate reservoir is seriously heterogeneous with developed fracture-cave.Simplex application of acoustic-electric imaging well logging information,such as electric imaging and dipole shear wave imaging,only can finely describe grown degree and fracture bearings in the reservoir around the wellbore,missed some oil-gas reservoirs with high productivity in Zhonggu-A well.Whereas seismic profile along the main fracture direction with techniques as root-mean-square amplitude of seismic wave and coherent attributes slice can display horizontal distributing characters,predict horizontal distributing of karst zones,and be helpful in searching abnormal reservoirs(called as "a string of beads").The horizontal prediction technique of reservoirs combining logging and seismic information has got good effects in Ordovician reservoirs of the No.1 slope break zone of Tazhong Oilfield,identifying some wells with high oil-gas productivity up to hundreds tons per day,and verifying several potential exploratory areas.
Carbonate reservoir is seriously heterogeneous with developed fracture-cave.Simplex application of acoustic-electric imaging well logging information,such as electric imaging and dipole shear wave imaging,only can finely describe grown degree and fracture bearings in the reservoir around the wellbore,missed some oil-gas reservoirs with high productivity in Zhonggu-A well.Whereas seismic profile along the main fracture direction with techniques as root-mean-square amplitude of seismic wave and coherent attributes slice can display horizontal distributing characters,predict horizontal distributing of karst zones,and be helpful in searching abnormal reservoirs(called as "a string of beads").The horizontal prediction technique of reservoirs combining logging and seismic information has got good effects in Ordovician reservoirs of the No.1 slope break zone of Tazhong Oilfield,identifying some wells with high oil-gas productivity up to hundreds tons per day,and verifying several potential exploratory areas.
引文
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[6]吕景英.预测碳酸盐岩储集层的地球物理方法[J].新疆石油地质,2003,(4):313-315.
[2]高宏亮.轮南西奥陶系碳酸盐岩地震反射特征的研究[J].石油地球物理勘探,2002,37:193-198.
[3]张承泽,等.塔中地区走滑断裂特征、成因及地质意义[C]∥塔里木石油与天然气专刊,2007:36-40.
[4]高磊.根据地震属性预测乌夏断裂带深层火山岩储集层[J].新疆石油地质,2007,(8):416-418.
[5]司马立强.测井地质应用技术[M].北京:石油工业出版社,2002.
[6]吕景英.预测碳酸盐岩储集层的地球物理方法[J].新疆石油地质,2003,(4):313-315.
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