塔里木盆地塔中地区中、上奥陶统生物礁滩特征及储集体预测
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摘要
塔里木盆地塔中地区中、上奥陶统发育生物礁滩,主要包括生物礁、生屑滩和灰泥丘3种,在测井曲线上表现为低自然伽马、低声波时差和高电阻率性质,在地震反射记录上有直接或间接特征。纵向上礁滩发育分为两个期次,由早期礁滩向晚期丘滩转化,并有向台内迁移的趋势;平面上多呈带状分布于构造发育带、断层上盘、台地边缘、古地貌凸起、台内缓坡以及地貌坡折带附近。早期礁滩主要分布于塔中1号断裂带附近的台缘相,在Z1井—TZ23井的台内低隆处见台内礁滩,偶见台内点礁(TZ35井),在地貌上发育于古凸起、台内缓坡或者地貌变化坡折带;晚期丘滩主要分布于10号断裂带附近的台缘相,在台内低隆亦见台内滩(TZ23井—Z1井),古地貌上发育于塔中凸起或台内低隆等部位。图4表1参10
Reef bank facies,developed in the Middle-Late Ordovician in the Central Tarim(Tazhong area),includes organic reef,bioclastic bank and lime-mud hillock.The reef bank in logging curves has lower SDT,lower gamma,and higher resistance rate.The seismic reflection has direct or indirect characteristics.The reef-bank reservoir can be vertically divided into two periods: the earlier period is dominated by reef-bank,while the later period by lime-mud hillock.The migratory trend is toward platform.Horizontally,the reef bank is distributed,in the form of strips,in the developed tectonic zones, hanging walls,paleogeomorphic bumps,platform margins,and geomorphic breaks.The earlier reef bank is mainly distributed nearby the fault zone of Tazhong No.1 and inside the platform along Well Z1-TZ23.The later reef bank is mainly distributed nearby the No.10 fault zone and inside the platform along Well Z1-TZ23.
Reef bank facies,developed in the Middle-Late Ordovician in the Central Tarim(Tazhong area),includes organic reef,bioclastic bank and lime-mud hillock.The reef bank in logging curves has lower SDT,lower gamma,and higher resistance rate.The seismic reflection has direct or indirect characteristics.The reef-bank reservoir can be vertically divided into two periods: the earlier period is dominated by reef-bank,while the later period by lime-mud hillock.The migratory trend is toward platform.Horizontally,the reef bank is distributed,in the form of strips,in the developed tectonic zones, hanging walls,paleogeomorphic bumps,platform margins,and geomorphic breaks.The earlier reef bank is mainly distributed nearby the fault zone of Tazhong No.1 and inside the platform along Well Z1-TZ23.The later reef bank is mainly distributed nearby the No.10 fault zone and inside the platform along Well Z1-TZ23.
引文
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[3]李宇平,李新生,周翼,等.塔中地区中上奥陶统沉积特征及沉积演化史[J].新疆石油地质,2000,21(3):204-207.(LI Yu-ping,LI Xin-sheng,ZHOU Yi,et al.Sedimentary characteristics andevolution history of Middle-Upper Ordovician in Tazhong area[J].Xinjiang Petroleum Geology,2000,21(3):204-207.)
[4]顾家裕,方辉,蒋凌志.塔里木盆地奥陶系生物礁的发现及其意义[J].石油勘探与开发,2001,28(4):1-3.(GU Jia-yu,FANGHui,JIANG Ling-zhi.The significance of Ordovician reefdiscovery in Tarim basin[J].Petroleum Exploration andDevelopment,2001,28(4):1-3.)
[5]王子煜,陆克政,漆家福,等.塔里木盆地塔中凸起的构造演化及其与油气藏的关系[J].石油大学学报(自然科学版),1998,22(4):14-17.(WANG Zi-yu,LU Ke-zheng,QI Jia-fu,et al.Relationbetween tectonic evolution and oil-gas reservoir in Tazhong uplift ofTarim basin[J].Journal of the University of Petroleum,China(Edition of Natural Science),1998,22(4):14-17.)
[6]欧阳睿,焦存礼,白利华,等.塔里木盆地塔中地区生物礁特征及分布[J].石油勘探与开发,2003,30(2):33-36.(OUYANG Rui,JIAO Cun-li,BAI Li-hua,et al.The distribution and features ofreef area of Tarim Basin[J].Petroleum Exploration andDevelopment,2003,30(2):33-36.)
[7]肖传桃,刘岭山,罗传容,等.塔里木盆地轮南地区奥陶纪生物礁古生态特征[J].新疆石油地质,1995,16(1):38-42.(XIAOChuan-tao,LIU Ling-shan,LUO Chuan-rong,et al.Paleoecology of organic reef in the Lunnan area,Tarim Basin[J].Xinjiang Petroleum Geology,1995,16(1):38-42.)
[8]中国石油勘探开发研究院油气储层重点实验室.塔里木盆地奥陶系、石炭系沉积相精细研究和编图[R].北京:中国石油勘探开发研究院,2000.(The Key Laboratory for Oil and Gas Reservoirs,Research Institute of Petroleum Exploration&Development.The scrutiny and compilation of Ordovician and Carboniferoussedimentary facies in Tarim Basin[R].Beijing:Research Instituteof Petroleum Exploration&Development,2000.)
[9]李洪辉,周东延,丛祝安.塔里木盆地地震反射异常体及其地质属性初探[J].石油勘探与开发,2001,28(2):50-52.(LI Hong-hui,ZHOU Dong-yan,CONG Zhu-an.Pilot study on seismic bodyand its geological characteristics in Tarim basin[J].PetroleumExploration and Development,2001,28(2):50-52.)
[10]任兴国,罗利,姚声贤,等.川东地区生物礁测井预测方法研究[J].石油勘探与开发,2000,27(1):41-43.(REN Xing-guo,LUOli,YAO Sheng-xian,et al.Logging prediction of organic reef inEast Sichuan China[J].Petroleum Exploration and Development,2000,27(1):41-43.)
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