应用地震地层厚度趋势法恢复塔里木盆地中晚奥陶统生物礁发育环境
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摘要
塔里木盆地中晚奥陶世发育大量的生物礁。通过钻探,发现了中国第一个奥陶系坡折带礁滩相灰岩亿吨级整装凝析油气田。生物礁生存和发育有着严格的生存环境,但由于构造剥蚀作用,造成塔里木盆地中晚奥陶世原始沉积环境破坏殆尽。这里从地震角度出发,应用地震地层厚度趋势法,对塔里木盆地中晚奥陶统地层进行了剥蚀恢复,再现了生物礁发育的原始沉积环境,并指出塔里木盆地中晚奥陶统在塔中以西,存在环麦盖堤斜坡～塔中～塔北的一条台地边缘相带,其范围广,面积大,为良好的生物礁发育场所,是未来油气勘探的主力区块。
Organic reef was largely developed in middle to late Ordovician in Tarim Basin, and the first 100M ton reserves gas oil field in China was discovered in the organic reef-bank limestone of Ordovician slope-bank zone. Organic reef formation and development rely on very unique environment, but original sedimentary environment in middle to late Ordovician in Tarim was destroyed completely due to structure eroded. This paper presents the results of original sedimentary environment of organic reef formation and development in middle to Ordovician in Tarim Basin restored by using seismic stratigraphy thickness trend approach, and it concludes that the middle to late Ordovician distributed in the ring platform margin facies zone from Maigeti Slope to Tazhong to Tabei in western Tazhong and that the sedimentary area are large and wide with good environment for reef which will be the main exploration area of oil and gas in this area in future.
Organic reef was largely developed in middle to late Ordovician in Tarim Basin, and the first 100M ton reserves gas oil field in China was discovered in the organic reef-bank limestone of Ordovician slope-bank zone. Organic reef formation and development rely on very unique environment, but original sedimentary environment in middle to late Ordovician in Tarim was destroyed completely due to structure eroded. This paper presents the results of original sedimentary environment of organic reef formation and development in middle to Ordovician in Tarim Basin restored by using seismic stratigraphy thickness trend approach, and it concludes that the middle to late Ordovician distributed in the ring platform margin facies zone from Maigeti Slope to Tazhong to Tabei in western Tazhong and that the sedimentary area are large and wide with good environment for reef which will be the main exploration area of oil and gas in this area in future.
引文
[1]刘延莉,樊太亮,薛艳梅,等.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[J].石油勘探与开发.2006,33(5):562.
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[13]刘斌.利用流体包裹体计算地层剥蚀厚度——以东海盆地3个凹陷为例[J].石油实验地质,2002,24(2):172.
[14]李储华,纪友亮,张世奇,等.应用宇宙成因核素10Be和26Al估算剥蚀面的暴露时间及剥蚀速率和剥蚀厚度[J].石油大学学报(自然科学版),2004,28(1):1.
[15]何生,王青玲.关于用镜质体反射率恢复地层剥蚀厚度的问题讨论[J].地质论评,1989,35(2):119.
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[17]徐国强,刘树根,李国蓉,等.塔中、塔北古隆起形成演化及油气地质条件对比[J].石油与天然气地质,2005,26(1):114.
[18]MAGARA K.Thickness of removed sediments,paleo-pore pressureand paleotemperature,southwestern part ofwestern Canada basin[J].AAPG Bulletin,1976,60:54.
[2]顾家裕,张兴阳,罗平,等.塔里木盆地奥陶系以地边缘生物礁、滩发育特征[J].石油与天然气地质.2005,26(3):277.
[3]张小兵,张哨楠,赵锡奎,等.应用地震地层综合法计算叠合盆地剥蚀厚度[J].新疆石油地质.28(3):366.
[4]李京昌,金之钧.塔里木盆地沉积剥蚀过程与油气关系[J].沉积学报,1998,16(1):81.
[5]李伟.恢复地层剥蚀厚度方法综述[J].中国海上油气地质,1996,10(3):167.
[6]刘景彦,林畅松,喻岳钰,等.用声波测井资料计算剥蚀量的方法改进[J].石油实验地质,2000,22(4):302.
[7]尹天放.多种信息综合计算剥蚀厚度方法[J].石油勘探与开发,1992,19(5):42.
[8]郝石生,贺志勇,高耀斌,等.恢复剥蚀地层的最优化方法[J].沉积学报,1988,6(4):93.
[9]王毅,金之钧.沉积盆地中恢复地层剥蚀量的新方法[J].地球科学进展,1999,14(5):482.
[10]张志诚,王雪松.裂变径迹定年资料应用中的问题及其地质意义[J].北京大学学报(自然科学版),2004,40(6):898.
[11]刘国臣,金之钧,李京昌.沉积盆地沉积~剥蚀过程定量研究的一种新方法——盆地波动分析应用之一[J].沉积学报,1995,13(3):24.
[12]张庆石,张吉,张庆晨.应用波动分析法研究三肇深层沉积剥蚀史[J].大庆石油地质与开发,2001,20(6):23.
[13]刘斌.利用流体包裹体计算地层剥蚀厚度——以东海盆地3个凹陷为例[J].石油实验地质,2002,24(2):172.
[14]李储华,纪友亮,张世奇,等.应用宇宙成因核素10Be和26Al估算剥蚀面的暴露时间及剥蚀速率和剥蚀厚度[J].石油大学学报(自然科学版),2004,28(1):1.
[15]何生,王青玲.关于用镜质体反射率恢复地层剥蚀厚度的问题讨论[J].地质论评,1989,35(2):119.
[16]陈恭洋.地层压实恢复的定量计算[J].江汉石油学院学报,1996,18(1):1.
[17]徐国强,刘树根,李国蓉,等.塔中、塔北古隆起形成演化及油气地质条件对比[J].石油与天然气地质,2005,26(1):114.
[18]MAGARA K.Thickness of removed sediments,paleo-pore pressureand paleotemperature,southwestern part ofwestern Canada basin[J].AAPG Bulletin,1976,60:54.
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