流体活动性属性技术在KG油田储集层描述中的应用
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摘要
阿尔及利亚Oued Mya盆地438b区块北部KG油田主要储集层为下三叠统曲流河沉积,砂体厚度薄、横向非均质性强、地震资料分辨率低、常规地震属性储集层预测效果差,采用常规储集层预测方法预测结果与实钻误差较大。为了精细描述KG油田T1砂体分布,应用流体活动性属性技术对T1储集层的非均质性及含油气性进行了预测。研究表明,流体活动性属性剖面上岩性组合与地震波组对应关系清楚。利用流体活动性属性技术较好地识别了KG油田有利储集层的分布,有效指导了水平井钻井轨迹调整,预测的储集层产能与实测产能基本一致,说明流体活动性属性技术可用于KG油田及同类型油田的储集层描述。图8参13
Lower Triassic sandstones deposited in meandering river channels are the main reservoirs of the KG(Kef El Argoub) Oilfield which is located at the northern Block 438b,Oued Mya Basin,Algeria.The sand bodies are thin and strong in lateral heterogeneity.It is difficult to be identified by simply applying seismic data and conventional seismic attributes,which will lead to a large difference between the prediction result and drilling result.A fluid mobility attribute technique is developed and applied in order to precisely characterize and evaluate the distribution of T1 sand bodies.Study shows that lithology assemblage showed in the fluid mobility attribute section is clearly corresponding to seismic wave group.Fluid mobility attributes help to identify favorable reservoirs and effectively adjust the drilling track of horizontal well.The predicting productivity is equivalent to actual productivity.Fluid mobility attributes could be applied to reservoir characterization of oil fields similar to the KG Oilfield.
Lower Triassic sandstones deposited in meandering river channels are the main reservoirs of the KG(Kef El Argoub) Oilfield which is located at the northern Block 438b,Oued Mya Basin,Algeria.The sand bodies are thin and strong in lateral heterogeneity.It is difficult to be identified by simply applying seismic data and conventional seismic attributes,which will lead to a large difference between the prediction result and drilling result.A fluid mobility attribute technique is developed and applied in order to precisely characterize and evaluate the distribution of T1 sand bodies.Study shows that lithology assemblage showed in the fluid mobility attribute section is clearly corresponding to seismic wave group.Fluid mobility attributes help to identify favorable reservoirs and effectively adjust the drilling track of horizontal well.The predicting productivity is equivalent to actual productivity.Fluid mobility attributes could be applied to reservoir characterization of oil fields similar to the KG Oilfield.
引文
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[3]张厚福.石油地质学[M].北京:石油工业出版社,2004.267-271.Zhang Houfu.Petroleum geology[M].Beijing:PetroleumIndustry Press,2004.267-271.
[4]刘剑平,潘校华,马君,等.西部非洲地区油气地质特征及资源概述[J].石油勘探与开发,2008,35(3):378-384.Liu Jianping,Pan Xiaohua,Ma Jun,et al.Petroleum geologyand resources in West Africa:An overview[J].PetroleumExploration and Development,2008,35(3):378-384.
[5]李阳,刘建民.油藏开发地质学[M].北京:石油工业出版社,2003.100-117.Li Yang,Liu Jianmin.Reservoir development geology[M].Beijing:Petroleum Industry Press,2003.100-117.
[6]邹才能,陶士振,袁选俊,等.“连续型”油气藏及其在全球的重要性:成藏、分布与评价[J].石油勘探与开发,2009,36(6):669-682.Zou Caineng,Tao Shizhen,Yuan Xuanjun,et al.Globalimportance of“continuous”petroleum reservoirs:Accumulation,distribution and evaluation[J].Petroleum Exploration andDevelopment,2009,36(6):669-682.
[7]乐友喜.地震属性提取、分析与应用方法研究[D].北京:中国石油勘探开发研究院,2002.Yue Youxi.Research of seismic attribute’s pickup,interpretationand application method[D].Beijing:Research Institute ofPetroleum Exploration&Development,PetroChina,2002.
[8]庄东海.地震属性分析与四维地震方法研究及应用[D].北京:中国地质大学(北京),1999.Zhuang Donghai.Seismic attribute interpretation and 4D seismicmethod,application[D].Beijing:China University ofGeosciences,1999.
[9]黄昌武.岩石物理学最新研究进展[J].石油勘探与开发,2008,35(2):204.Huang Changwu.Latest progress in petrophysics[J].PetroleumExploration and Development,2008,35(2):204.
[10]Silin D B,Korneev V A,Goloshubin G M,et al.A hydrologic viewon Biot’s theory of poroelasticity[A].Paper LBNL-54459,2004.
[11]Hampson D P,Schuelke J S,Quirein J A.Use of multiattributetransforms to predict log properties from seismic data[J].Geophysics,2001,66:220-236.
[12]Goloshubin G M,Korneev V A,Vingalov V A,et al.Seismiclow-frequency effects from oil-saturated reservoir zones[R].SaltLake City:SEG Meeting,2002.
[13]Valeri A K,Dmitry S,Valeri A K.Reservoir imaging using lowfrequencies of seismic reflections[J].The Leading Edge,2006,83:525-527.
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