随机反演在文昌A油田储层非均质性研究中的应用
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摘要
地震反演是油气储层预测的关键技术,该技术可以将地震信息转换成具有直接地质意义的油气藏参数信息,因而在地质研究中发挥着重要作用。叠后地震随机反演方法兼顾了地震数据的横向分辨率与测井数据的纵向分辨率,更是在油气藏描述方面具有显著优势。这里以文昌A油田ZJ2-1油组储层为研究对象,在分析储层岩石物理特征的基础上,选取多井平均子波,建立低频模型,利用约束稀疏脉冲反演来确定水平变差函数,通过测井数据的分析确定垂直变差函数,从而进行地震随机反演,在储层的非均质性研究中取得了较好的效果。
Seismic inversion is the hotspot of the prediction of oil and gas,which can change the information of reflection interface expressed by seismic data into information of reservoir parameters including directly geological significance,so it has attracted a lots of geological researchers.Post stack seismic random inversion has significant advantages in reservoir description,which takes the lateral resolution of seismic data and the vertical resolution of logging data into account.In this paper,for the study of reservoir of the oil group of ZJ2-1 in Wenchang A oil field,we select the average wavelet of multiple wells,establish the low-frequency model,and determine the function of level variation using the constrained sparse spike inversion and the function of vertical variation by the analysis of log data based on the analysis of lithology characteristics of the reservoir,and take the seismic random inversion.The good results are achieved in the study of reservoir heterogeneity.
Seismic inversion is the hotspot of the prediction of oil and gas,which can change the information of reflection interface expressed by seismic data into information of reservoir parameters including directly geological significance,so it has attracted a lots of geological researchers.Post stack seismic random inversion has significant advantages in reservoir description,which takes the lateral resolution of seismic data and the vertical resolution of logging data into account.In this paper,for the study of reservoir of the oil group of ZJ2-1 in Wenchang A oil field,we select the average wavelet of multiple wells,establish the low-frequency model,and determine the function of level variation using the constrained sparse spike inversion and the function of vertical variation by the analysis of log data based on the analysis of lithology characteristics of the reservoir,and take the seismic random inversion.The good results are achieved in the study of reservoir heterogeneity.
引文
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[4]刘俊州,周小鹰,王箭波,等.地质统计学反演在非均质薄砂岩气藏开发中的实践[J].内蒙古石油化工,2009(7):16.
[5]慎国强,孟宪军,王玉梅,等.随机地震反演方法及其在埕北35井区的应用[J].石油地球物理勘探,2004,39(1):75.
[6]易平,林桂康.随机地震反演技术及在文昌13-1油田的应用[J].石油地球物理勘探,2004,39(1):75.
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[8]边树涛,狄帮让,董艳蕾,等.地质统计反演在东濮凹陷白庙气田沙三段储层预测中的应用[J].石油地球物理勘探,2010,45(3):398.
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[11]孙思敏,彭仕密.地质统计学反演及其在吉林扶余油田储层预测中的应用[J].物探与化探,2007,31(1):51.
[2]LAMRYP,SWABY PA,ROWBOTHAM P S.From seismic to reservoir properties with geo statistical in-version[J].SPE Reservoir Eval and Eny,1999,4(3):334.
[3]史文东,张立昌,尹克敏,等.地质统计地震反演方法及其在民丰断裂带封堵中的应用研究[J].石油地球物理勘探,2002,37(4):407.
[4]刘俊州,周小鹰,王箭波,等.地质统计学反演在非均质薄砂岩气藏开发中的实践[J].内蒙古石油化工,2009(7):16.
[5]慎国强,孟宪军,王玉梅,等.随机地震反演方法及其在埕北35井区的应用[J].石油地球物理勘探,2004,39(1):75.
[6]易平,林桂康.随机地震反演技术及在文昌13-1油田的应用[J].石油地球物理勘探,2004,39(1):75.
[7]李方明,计智锋,赵国良,等.地质统计反演之随机地震反演方法[J].石油勘探与开发,2007,34(4):451.
[8]边树涛,狄帮让,董艳蕾,等.地质统计反演在东濮凹陷白庙气田沙三段储层预测中的应用[J].石油地球物理勘探,2010,45(3):398.
[9]黄绪德.反褶积与地震道反演[M].北京:石油工业出版社,1992.
[10]刘兴东.随机反演变差函数适用性研究[J].石油天然气学报,2010,32(2):253.
[11]孙思敏,彭仕密.地质统计学反演及其在吉林扶余油田储层预测中的应用[J].物探与化探,2007,31(1):51.
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