辽中中洼东陡坡带古近系层序地层格架控制下的储层预测
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摘要
受地震资料品质和钻井控制点较少的影响,测井约束反演技术在辽中中洼东陡坡带古近系储层预测中的应用受到了一定的限制。探索总结出了一套层序地层格架控制下的储层预测方法,以砂体包络线为控制面选取合理时窗和提取地震属性,针对地震能量、振幅、频率和波形特点进行地震相划分,并结合地质综合分析结果对储层分布特征进行精确预测。辽中中洼东陡坡带A构造区南高点S1井的钻探成功,证实了钻前对该区储层预测的正确性,也证明了这一储层预测方法的有效性。
When predicting Paleogene reservoirs in east steep-slope zone(ESSZ),Liaozhong middle depression,the application of logging-constrained inversion techniques is somewhat restricted because of poorer seismic data quality and fewer wells drilled.The methodology to predict reservoirs under a sequence stratigraphy framework has been developed,which can use sand envelops as control surfaces to select reasonable time-window and pick up seismic attributes,classify seismic phases in terms of seismic energy,amplitude,frequency and wave-form characteristics,and predict accurately features of reservoir distribution by combining with integrated geologic analyses.The success of well S1 at the south high on structure A,ESSZ,has confirmed the pe-drilling located at east artic region of Liaozhong middle depression,and the well S1 located at south high spot reservoir prediction in this area and the methodology effectiveness.
When predicting Paleogene reservoirs in east steep-slope zone(ESSZ),Liaozhong middle depression,the application of logging-constrained inversion techniques is somewhat restricted because of poorer seismic data quality and fewer wells drilled.The methodology to predict reservoirs under a sequence stratigraphy framework has been developed,which can use sand envelops as control surfaces to select reasonable time-window and pick up seismic attributes,classify seismic phases in terms of seismic energy,amplitude,frequency and wave-form characteristics,and predict accurately features of reservoir distribution by combining with integrated geologic analyses.The success of well S1 at the south high on structure A,ESSZ,has confirmed the pe-drilling located at east artic region of Liaozhong middle depression,and the well S1 located at south high spot reservoir prediction in this area and the methodology effectiveness.
引文
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