巴楚地区下丘里塔格组层序地层及对储层影响
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摘要
塔里木盆地巴楚地区下丘里塔格组主要为一套局限台地相沉积,广泛发育厚层状白云岩储层,是目前寒武系最为重要的油气勘探目的层。运用测井、地震资料,结合岩性组合特征综合分析,对巴楚地区下丘里塔格组进行了层序地层划分,确定出该组包含4个三级层序,层序内部主要表现为海侵体系域和高位体系域的组合。其中,高位体系域不完全发育。在层序分析的基础上,通过岩心薄片和钻井油、气、水显示资料综合分析,认为三级层序影响了巴楚地区下丘里塔格组白云岩储层发育,是储层发育的主要控制因素。下丘里塔格组(岩溶型)白云岩储层主要发育于层序界面下部的高位期,特别是有短期暴露界面下的高位晚期。
The Upper Cambrian Xiaqiulitage Formation in Tarim Basin has widely developed thick dolomite on restricted platform,and has become the most important reservoir.According to the multidisciplinary analysis of the data on wells and seismic,the Upper Cambrian Xiaqiulitage Formation is divided into four sequence stratigraphic units in Bachu area.The sequence stratigraphic units were charactered by TST and HST.The HST does not develop completely.On the multidisciplinary analysis of lithologic character of dolomite and indication of oil and gas on wells,the sequence stratigraphic units have vital effect on dolomite reservoir.The karstic dolomite reservoir mainly developed in the HST of sequence stratigraphic,especially in the last period of HST with exposition.
The Upper Cambrian Xiaqiulitage Formation in Tarim Basin has widely developed thick dolomite on restricted platform,and has become the most important reservoir.According to the multidisciplinary analysis of the data on wells and seismic,the Upper Cambrian Xiaqiulitage Formation is divided into four sequence stratigraphic units in Bachu area.The sequence stratigraphic units were charactered by TST and HST.The HST does not develop completely.On the multidisciplinary analysis of lithologic character of dolomite and indication of oil and gas on wells,the sequence stratigraphic units have vital effect on dolomite reservoir.The karstic dolomite reservoir mainly developed in the HST of sequence stratigraphic,especially in the last period of HST with exposition.
引文
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杨小萍,刘桂侠,马文杰.层序地层学研究现状及发展趋势[J].西北地质,2001,34(2):16-20.Yang Xiaoping,Liu Guixia,Ma Wenjie.Current situationand developing tendency of sequence stratigraphy[J].Northwestern Geology,2001,34(2):16-20.
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陈国俊,史基安,薛莲花,等.塔里木西部古生代层序地层特征[J].沉积学报,1999,17(4):560-565.Chen Guojun,Shi Jian,Xue Lianhua.SequenceStratigraphy of the Paleozoic in West Tarim Basin[J].Acta Sedimentologica Sinica,1999,17(4):560-565.
陈永权,周新源,杨海军,等.塔里木盆地肖尔布拉克剖面下丘里塔格组层序地层及其油气勘探意义[J].地层学杂志,2010,34(1):77-81.Chen Yongquan,Zhou Xinyuan,Yang Haijun.SequenceStratigraphy and its controlon burial karstification dolo-stone reservoir in the uppercambrian xiaqiulitage forma-tionat xiao erbulakesection,tarim Basin[J].Journalof Stratigraphy,2010,34(1)77-81.
何登发,贾承造,李德生,等.塔里木多旋回叠合盆地的形成与演化[J].石油与天然气地质,2005,26(1):64-75.He Dengfa,Jia Chengzao,Li Desheng.Formation and evo-lution of polycyclic superimposed Tarim Basin[J].Oil&Gas Geology,2005,26(1):64-75.
贾承造,魏国齐.塔里木盆地构造特征与含油气性[J].科学通报,2002,47(增刊):1-8.Jia Chengzao,Wei Guoqi.Tectonic and hydrocarbon bearingfeature in the Tarim Basin[J].Chinese Science Bulle-tin,2002,47(supplement):1-8.
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李霞,范宜仁,邓少贵,等.利用测井资料研究层序方法的评述[J].测井技术,2006,30(5):411-415.Li Xia,Fan Yiren,Deng Shaogui,et al.Review on Meth-ods for Studying Strata Sequence with Log Data[J].Well Logging Technology,2006(5):411-415.
尹微,樊太亮,王宏语,等.塔里木盆地巴楚地区油气运移的控制因素分析[J].西北地质,2006,39(3):75-82.Yin Wei,Fan Tailiang,Wang Hongyu,et al.ControllingFactors of Hydrlcarbon Migration in Bachu Area of Ta-rim Basin[J].Northwestern Geology,2006,39(3):75-82.
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