多种勘探技术在飞雁滩油气藏研究中的综合运用
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摘要
运用以地震信息为主的相分析、地震属性分析、测井约束反演三维可视化、聚类分析等技术对飞雁滩地区馆陶组河流相砂体开展了勘探和滚动勘探研究,取得了较好效果。应用合成地震记录标定和测井约束反演技术进一步对砂体进行了描述,使用聚类分析技术判断了砂体的含油性;利用相分析技术发现了埕118-34、埕118-40块,振幅值对砂体的追踪预测表明埕118-21等3口井表现为薄层、低阻,其他井同样钻遇了该套层系,这进一步验证了储层预测的准确性。研究还发现一种技术只能解决油气勘探中的某一个方面的问题,对于该区曲流河砂岩储层,综合运用多种技术是研究馆陶组河流相砂体的有效手段。理论试验和实际应用表明,地震属性参数提取和测井约束反演技术在该类砂体的描述中最为成熟,多种技术的综合运用提高了勘探的精度和储层预测的准确性,具有较高的推广价值。
Different technologies, such as seismic data-dominated phase analysis, seismic attribute analysis, logging constrained seismic inversion, 3D visualization and cluster analysis, are comprehensively used to study the sandbodies of fluvial facies in Guantao Formation in Feiyantan area during exploration and progressive exploration and satisfactory results have been achieved. Seismogram calibration and logging constrained seismic inversion technologies are used to further describe the sandbodies, and cluster analysis technology is used to determine their oil potentials. Utilization of phase analysis technology has led to the discovery of Wellblocks Cheng 118-34 and 118-40. Tracing and prediction of sandbody with amplitude value shows that the reservoirs in Cheng 118-21 and other two wells are thin layers with low impedance, and they are also penetrated by other wells, furthering verifying the accuracy of reservoir prediction. It is also found that one technology can only solve certain problem of petroleum exploration. For the sandstone reservoirs of meandering river facies in the study area, comprehensive application of multiple technologies is an effective way to study the sandbodies of fluvial facies in Guantao Formation. Theoretical experiments and real application show that seismic attribute extraction and logging constrained seismic inversion are mature technologies for description of this kind of sandbodies, and comprehensive application of multiple technologies can improve the accuracy of exploration and the reliability of reservoir prediction. This method is worthy to be widely used.
Different technologies, such as seismic data-dominated phase analysis, seismic attribute analysis, logging constrained seismic inversion, 3D visualization and cluster analysis, are comprehensively used to study the sandbodies of fluvial facies in Guantao Formation in Feiyantan area during exploration and progressive exploration and satisfactory results have been achieved. Seismogram calibration and logging constrained seismic inversion technologies are used to further describe the sandbodies, and cluster analysis technology is used to determine their oil potentials. Utilization of phase analysis technology has led to the discovery of Wellblocks Cheng 118-34 and 118-40. Tracing and prediction of sandbody with amplitude value shows that the reservoirs in Cheng 118-21 and other two wells are thin layers with low impedance, and they are also penetrated by other wells, furthering verifying the accuracy of reservoir prediction. It is also found that one technology can only solve certain problem of petroleum exploration. For the sandstone reservoirs of meandering river facies in the study area, comprehensive application of multiple technologies is an effective way to study the sandbodies of fluvial facies in Guantao Formation. Theoretical experiments and real application show that seismic attribute extraction and logging constrained seismic inversion are mature technologies for description of this kind of sandbodies, and comprehensive application of multiple technologies can improve the accuracy of exploration and the reliability of reservoir prediction. This method is worthy to be widely used.
引文
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[2]陆基孟.地震勘探原理[M].山东东营:中国石油大学出版社,1993.
[3]刘全稳,陈景山,王允诚.油气圈闭管理评价系统[M].北京:石油工业出版社,2000.
[4]刘全稳,等.圈闭管理内容与方法[J].天然气工业,2002,22(3):1720.
[5]李洪玺,刘全稳,何家雄,等.榆林气田开采中地质因素分析[J].天然气地球科学,2005,16(3):382386.
[6]张代森.注聚增阻调剖剂CYY-5及其在飞雁滩油田的应用[J].油田化学,2004,21(4):351356.
[7]李学义.利用地震资料作储层预测需要注意的问题[J].天然气工业,2004,24(9):4447.
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