碳酸盐岩古岩溶储层预测的难点与对策
|
摘要
在分析碳酸盐岩古岩溶储层成因特点与预测难点的基础上,确定针对该类储层进行地震预测的思路与对策,即首先建立古岩溶储层的地质概念模型,然后通过实验室地震物理模拟,确定敏感性地震参数,最后在井旁地震道属性统计分析的基础上,对塔里木盆地轮西区块奥陶系风化壳古岩溶储层进行预测。结果表明:该区早海西期存在2个岩溶旋回,相应地发育3套与岩溶作用有关的储层;平均反射强、均方根振幅、平均能量是反映缝洞型储层的主要敏感性地震参数,而能量半衰时斜率对于检测裂缝发育带最为敏感;研究区古岩溶储层的发育主要受岩溶地貌和断裂系统的控制,具有明显的分带性及叠置性特征。
By analyzing genesis characteristics and prediction difficulties of carbonate paleokarst reservoir,the route and countermeasures of carbonate paleokarst reservoir seismic prediction were determined.A geologic conceptual model was first developed,and the sensitive seismic attribute parameters were determined by seismic physics modeling in laboratory.Finally,the reservoir distribution was predicted according to the statistics of near-well seismic traces attributes.The forecast results of the Odovician weathering curst karst reservoir in Lunxi block,Tarim Basin show that two karst cycles developed in the Odovician weathering curst of Lunxi block,which formed three sets of reservoirs related to the early Hercynian period karstification.The results of physical modeling show that the main seismic parameters sensive to the fractural and carvern reservoir are the average reflection intensity,the mean square root amplitude and the mean amount of energy,and the parameter sensive to the fractural zone is the gradient of energe half attenuation time.The distribution of paleokarst reservoir shows an obvious characteristic of banding and overlaying,which is mainly controlled by the karst topograph and the development of the faults.
By analyzing genesis characteristics and prediction difficulties of carbonate paleokarst reservoir,the route and countermeasures of carbonate paleokarst reservoir seismic prediction were determined.A geologic conceptual model was first developed,and the sensitive seismic attribute parameters were determined by seismic physics modeling in laboratory.Finally,the reservoir distribution was predicted according to the statistics of near-well seismic traces attributes.The forecast results of the Odovician weathering curst karst reservoir in Lunxi block,Tarim Basin show that two karst cycles developed in the Odovician weathering curst of Lunxi block,which formed three sets of reservoirs related to the early Hercynian period karstification.The results of physical modeling show that the main seismic parameters sensive to the fractural and carvern reservoir are the average reflection intensity,the mean square root amplitude and the mean amount of energy,and the parameter sensive to the fractural zone is the gradient of energe half attenuation time.The distribution of paleokarst reservoir shows an obvious characteristic of banding and overlaying,which is mainly controlled by the karst topograph and the development of the faults.
引文
[1]蓝江华.四川盆地大池干井构造带石炭系古岩溶储层成因模式[J].成都理工学院学报,1999,26(1):23-27.LAN Jiang-hua.The genetic model of paleosolution con-trolled reservoir of carboniferous system in the Dachigan-jing tectonic belt,Sichuan Basin[J].Journal of ChengduUniversity of Technology,1999,26(1):23-27.
[2]邬长武,龚福华,魏建新,等.地震物理正演模拟在古岩溶储层研究中的应用[J].江汉石油学院学报,2004,26(4):74-76.WUChang-wu,GONG Fu-hua,WEI Jian-xin,et al.Ap-plication of seismic physical forward modeling in palae-okarst reservoir study[J].Journal of Jianghan PetroleumInstitute,2004,26(4):74-76.
[3]魏建新,狄邦让,王立华.孔洞储层地震物理模拟研究[J].石油物探,2008,47(2):156-160.WEI Jian-xin,DI Bang-rang,WANG Li-hua.Seimicphysical modeling of caveren reservoir[J].Petroleumphysical exploration,2008,47(2):156-160.
[4]王永刚,乐友喜,刘伟,等.地震属性与储层特征的相关性研究[J].石油大学学报:自然科学版,2004,28(1):26-30.WANG Yong-gang,YUE You-xi,LIU Wei,et al.Rela-tivity between seimic attributes and reservoir characters[J].Journal of the University of Petroleum,China(Edi-tion of Natural Science),2004,28(1):26-30.
[5]莫午零,吴朝东.碳酸盐岩风化壳储层的地球物理预测方法[J].北京大学学报:自然科学版,2006,42(6):704-707.MO Wu-ling,WU Chao-dong.Geophysical method forprediction of weathering crust of carbonate reservoirs[J].Acta Scicentiarum Naturalum Universitis Pekinesis,2006,42(6):704-707.
[6]刘忠宝,孙华,于炳松,等.裂缝对塔中奥陶系碳酸盐岩储集层岩溶发育的控制[J].新疆石油地质,2007,28(3):289-291.LIU Zhong-bao,SUN Hua,YU Bing-song,et al.Thecontrol of fractures on karst in Ordovician carbonate reser-voirs in Tazhong area,Tarim Basin[J].Xinjiang Petrole-um Geology,2007,28(3):289-291.
[7]陈新军,蔡希源,纪友亮,等.塔中奥陶系大型不整合面与风化壳岩溶发育[J].同济大学学报:自然科学版,2007,35(8):1122-1127.CHEN Xin-jun,CAI Xi-yuan,JI You-liang,et al.Rela-tionship between large scale unconformity surface andweathering crust Karst of Ordovician in Tazhong[J].Journal of Tongji University(Natural Science),2007,35(8):1122-1127.
[8]朱如凯,郭宏莉,高志勇,等.中国海相储层分布特征与形成主控因素[J].科学通报,2007,52(增刊1):40-45.ZHU Ru-kai,GUO Hong-li,GAO Zhi-yong,et al.Thedistribution character and the formation controlling factorsof marine reservoir in China[J].Chinese Science Bulle-tin,2007,52(sup1):40-45.
[9]王宏语,樊太亮,高志前,等.塔中地区奥陶纪古地貌及其对储集层的控制作用[J].新疆石油地质,2007,28(1):15-19.WANG Hong-yu,FAN Tai-liang,GAO Zhi-qian,et al.Ordovician Palaeogeomorphology and reservoir-controlledprocess in Tazhong area,Tarim Basin[J].Xinjiang Pe-troleum Geology,2007,28(1):15-19.
[10]热合木江,马玉书.模糊神经网络在地质数据分析中的应用[J].石油大学学报:自然科学版,1996,20(6):13-16.REHE Mu-jiang,MA Yu-shu,Analysis of geologicaldata by using fuzzy neural networks[J].Journal of theUniversity of Petroleum,China(Edition of Natural Sci-ence),1996,20(6):13-16.
[2]邬长武,龚福华,魏建新,等.地震物理正演模拟在古岩溶储层研究中的应用[J].江汉石油学院学报,2004,26(4):74-76.WUChang-wu,GONG Fu-hua,WEI Jian-xin,et al.Ap-plication of seismic physical forward modeling in palae-okarst reservoir study[J].Journal of Jianghan PetroleumInstitute,2004,26(4):74-76.
[3]魏建新,狄邦让,王立华.孔洞储层地震物理模拟研究[J].石油物探,2008,47(2):156-160.WEI Jian-xin,DI Bang-rang,WANG Li-hua.Seimicphysical modeling of caveren reservoir[J].Petroleumphysical exploration,2008,47(2):156-160.
[4]王永刚,乐友喜,刘伟,等.地震属性与储层特征的相关性研究[J].石油大学学报:自然科学版,2004,28(1):26-30.WANG Yong-gang,YUE You-xi,LIU Wei,et al.Rela-tivity between seimic attributes and reservoir characters[J].Journal of the University of Petroleum,China(Edi-tion of Natural Science),2004,28(1):26-30.
[5]莫午零,吴朝东.碳酸盐岩风化壳储层的地球物理预测方法[J].北京大学学报:自然科学版,2006,42(6):704-707.MO Wu-ling,WU Chao-dong.Geophysical method forprediction of weathering crust of carbonate reservoirs[J].Acta Scicentiarum Naturalum Universitis Pekinesis,2006,42(6):704-707.
[6]刘忠宝,孙华,于炳松,等.裂缝对塔中奥陶系碳酸盐岩储集层岩溶发育的控制[J].新疆石油地质,2007,28(3):289-291.LIU Zhong-bao,SUN Hua,YU Bing-song,et al.Thecontrol of fractures on karst in Ordovician carbonate reser-voirs in Tazhong area,Tarim Basin[J].Xinjiang Petrole-um Geology,2007,28(3):289-291.
[7]陈新军,蔡希源,纪友亮,等.塔中奥陶系大型不整合面与风化壳岩溶发育[J].同济大学学报:自然科学版,2007,35(8):1122-1127.CHEN Xin-jun,CAI Xi-yuan,JI You-liang,et al.Rela-tionship between large scale unconformity surface andweathering crust Karst of Ordovician in Tazhong[J].Journal of Tongji University(Natural Science),2007,35(8):1122-1127.
[8]朱如凯,郭宏莉,高志勇,等.中国海相储层分布特征与形成主控因素[J].科学通报,2007,52(增刊1):40-45.ZHU Ru-kai,GUO Hong-li,GAO Zhi-yong,et al.Thedistribution character and the formation controlling factorsof marine reservoir in China[J].Chinese Science Bulle-tin,2007,52(sup1):40-45.
[9]王宏语,樊太亮,高志前,等.塔中地区奥陶纪古地貌及其对储集层的控制作用[J].新疆石油地质,2007,28(1):15-19.WANG Hong-yu,FAN Tai-liang,GAO Zhi-qian,et al.Ordovician Palaeogeomorphology and reservoir-controlledprocess in Tazhong area,Tarim Basin[J].Xinjiang Pe-troleum Geology,2007,28(1):15-19.
[10]热合木江,马玉书.模糊神经网络在地质数据分析中的应用[J].石油大学学报:自然科学版,1996,20(6):13-16.REHE Mu-jiang,MA Yu-shu,Analysis of geologicaldata by using fuzzy neural networks[J].Journal of theUniversity of Petroleum,China(Edition of Natural Sci-ence),1996,20(6):13-16.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心