地质模型动态更新方法在关家堡油田的应用
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摘要
地质模型动态更新依据随钻测井资料及时更新先期建立的地质模型,得到钻井不同时刻的三维地质模型,实时有效地了解储集层空间展布,及时发现其构造、产状等的变化,从而对原有设计井眼轨迹加以修正,有效地调整钻井前进轨迹,发挥地质导向作用,直至以最佳方式穿过油层,最终达到提高水平段有效率和钻井总体效益的目的。把地质模型动态更新方法应用于关家堡油田水平井钻井过程中,结合测井、地质和地震等资料,并把随钻资料加入到地质模型中,采用多步建模的方法进行地质条件约束,更新并完善GR、孔隙度、渗透率等模型,提高了储集层随机建模精度,特别是砂体分布模型的精度,保证了模型的准确性和可靠性。Zh8-H井钻井实践表明,由于及时地提供了较为准确的地质模型,明显地提高了水平井钻遇油层的能力。图5参13
Through building 3D geological models in different drilling time according to the logging while drilling(LWD) data and by updating the previous geological models,the dynamic updating of geological model could enable the acquisition of the spatial distribution of reservoir effectively and find the structural and occurrence changes instantly,so as to modify the former designed borehole track and adjust the drilling track by geosteering,and drill the oil layers in the best way.It can improve the effectiveness of horizontal interval and the drilling benefit.Combined with well logging,geological data and seismic data as well as the LWD data,this method was applied to the drilling of the Guanjiapu Oilfield,and the geological conditions were constrained by the multistage modeling method,to update and improve the GR,porosity and permeability models and the accuracy of reservoir random models,especially the sandstone distribution model to ensure the accuracy and reliability of the model.The drilling of Well Zh8-H has shown that the geosteering drilling capability was obviously improved in light of providing accurate geological model timely.
Through building 3D geological models in different drilling time according to the logging while drilling(LWD) data and by updating the previous geological models,the dynamic updating of geological model could enable the acquisition of the spatial distribution of reservoir effectively and find the structural and occurrence changes instantly,so as to modify the former designed borehole track and adjust the drilling track by geosteering,and drill the oil layers in the best way.It can improve the effectiveness of horizontal interval and the drilling benefit.Combined with well logging,geological data and seismic data as well as the LWD data,this method was applied to the drilling of the Guanjiapu Oilfield,and the geological conditions were constrained by the multistage modeling method,to update and improve the GR,porosity and permeability models and the accuracy of reservoir random models,especially the sandstone distribution model to ensure the accuracy and reliability of the model.The drilling of Well Zh8-H has shown that the geosteering drilling capability was obviously improved in light of providing accurate geological model timely.
引文
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[2]朱焱,谢进庄,杨为华,等.提高油藏数值模拟历史拟合精度的方法[J].石油勘探与开发,2008,35(2):225-229.Zhu Yan,Xie Jinzhuang,Yang Weihua,et al.Method fori mproving history matching precision of reservoir numericalsi mulation[J].Petroleum Exploration and Development,2008,35(2):225-229.
[3]陈烨菲,蔡冬梅,范子菲,等.哈萨克斯坦盐下油藏双重介质三维地质建模[J].石油勘探与开发,2008,35(4):492-497,508.Chen Yefei,Cai Dongmei,Fan Zifei,et al.3D geologicalmodeling of dual porosity carbonate reservoirs:A case fromKenkiyak pre-salt oilfield,Kazakhstan[J].PetroleumExploration and Development,2008,35(4):492-497,508.
[4]张淑娟,邵龙义,宋杰,等.相控建模技术在阿南油田阿11断块中的应用[J].石油勘探与开发,2008,35(3):355-361.Zhang Shujuan,Shao Longyi,Song Jie,et al.Application offacies-controlled modeling technology to the fault-block A11 inA’nan Oilfield[J].Petroleum Exploration and Development,2008,35(3):355-361.
[5]赵国良,沈平平,穆龙新,等.薄层碳酸盐岩油藏水平井开发建模策略———以阿曼DL油田为例[J].石油勘探与开发,2009,36(1):91-96.Zhao Guoliang,Shen Pingping,Mu Longxin,et al.Geo-modeling for thin carbonate reservoirs developed with horizontalwells:A case from DL Oilfield,Oman[J].PetroleumExploration and Development,2009,36(1):91-96.
[6]Pri mera A,Perez-Damas C,Kumar S,et al.Si mulation whiledrilling:utopia or reality[A].SPE 99945,2006.1-7.
[7]Efnik MS,Hamawi M,Al Shamri A,et al.Using newadvancesin LWD technology for geosteering and geologic modeling[A].SPE/I ADC 57537,1999.1-9.
[8]Hashem M,Miller R,Dossari S M,et al.Enhanced reservoircontact using new LWD technology in thin channel sands[A].SPE 113779,2008.1-13.
[9]李艳明,陶林本,李旭东.吐哈油田水平井随钻地质导向技术研究[J].吐哈油气,2007,12(4):337-340.Li Yanming,Tao Linben,Li Xudong.Studies on geologysteering technology while drilling for horizontal well in Tuhabasin[J].Tuha Oil&Gas,2007,12(4):337-340.
[10]袁淑琴,肖敦清,高嘉瑞,等.关家堡地区第三系精细构造解释与构造特征分析[J].石油天然气学报(江汉石油学院学报),2006,28(4):252-254.Yuan Shuqin,Xiao Dunqing,Gao Jiarui,et al.Tertiary precisionstructural interpretation and structural characteristics inGuanjiabao area[J].Journal of Oil and Gas Technology(J.JPI),2006,28(4):252-254.
[11]窦松江,孙超囡,贾玉梅,等.滩海油田开发初期的地质建模研究[J].海洋石油,2008,28(1):13-18.Dou Songjiang,Sun Chaonan,Jia Yumei,et al.Geologicalmodeling in early development of offshore oilfield[J].OffshoreOil,2008,28(1):13-18.
[12]苏义脑.地质导向钻井技术概况及其在我国的研究进展[J].石油勘探与开发,2005,32(1):92-95.Su Yinao.Geosteering drilling technology and its development inChina[J].Petroleum Exploration and Development,2005,32(1):92-95.
[13]夏宏泉,陈平,石晓兵,等.基于随钻资料的地层岩性实时识别方法[J].石油学报,2004,25(2):51-54.Xia Hongquan,Chen Ping,Shi Xiaobing,et al.Real-ti merecognizing method of lithology based on information whiledrilling[J].Acta Petrolei Sinica,2004,25(2):51-54.
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