任延广,张君龙,齐景顺,张亚金,张斌,刘洋
REN Yanguang,ZHANG Junlong,QI Jingshun,ZHANG Yajin,ZHANG Bin,LIU Yang

• 1:大庆油田有限责任公司勘探开发研究院
• 2:大庆油田有限责任公司勘探事业部

摘要(Abstract)：

随着勘探程度的提高,塔东地区寒武—奥陶系碳酸盐岩地层展现出良好油气勘探前景。根据碳酸盐岩沉积模式,通过岩石学特征、地震相、沉积古地貌解剖等研究,在塔东地区识别出盆地、广海陆棚、台缘斜坡、台缘礁滩、台缘浅滩、开阔台地、局限台地相等7种碳酸盐岩沉积相类型,指出塔东地区寒武—奥陶系碳酸盐岩沉积相具有三分结构特征:中部发育盆地相区,东部和西部发育台地相区及台缘相区。确定了下寒武统深水盆地—开阔台地,中—上寒武统(较)深水、浅水盆地—局限台地,中—下奥陶统浅水、深水盆地—开阔/局限台地沉积相组合序列及沉积体系展布特征,并结合相对海平面升降分析建立了塔东地区碳酸盐岩缓坡台盆体系—镶边台盆体系—远端变陡型台盆体系的沉积演化模式。指出台地边缘相发育礁滩储层、台缘斜坡相发育重力流沉积储层及局限台地内发育膏溶储层,是油气聚集的有利相带。
With the increase of the exploration degree,Cambrian-Ordovician carbonate formations in the Tadong region have shown the good exploration prospects in finding oil and gas.According to the carbonate depositional models and studies on the petrologic characteristics,seismic facies and sedimentary palaeogeomorphologic analyses,seven types of the carbonate sedimentary facies in the Tadong region are identified,including basin facies,continental shelf of wide sea facies,slope of platform margin facies,reef and beach of platform margin facies,shallow beach of platform margin facies,open platform facies and restricted platform facies,and moreover the typical trisection structural features are pointed out in Tadong Cambrian-Ordovician carbonate sedimentary facies;the basin facies develops in the central area,the platform facies and platform margin facies develop in the eastern and western parts.The sedimentary-facies sequential compositions and distributional characteristics of the sedimentary systems are made sure in Lower Cambrian deep water basin-open platform and Middle-Upper Cambrian deeper water and shallow water basin-restricted platform and Middle-Lower Ordovician shallow water and deep water basin-open /restricted platforms.Combined with the analysis of the relative sea level fluctuation,the sedimentary evolution models are established for the ramp platform-basin system-rimmed platform-basin system-distal steepening platform-basin system in the Tadong carbonate region.The favorable facies belts for the petroleum accumulation are the reef and beach reservoirs developed in the platform margin facies and gravity flow reservoirs developed in the slope of platform margin facies and gypsum soluble reservoirs developed in the restricted platform.

关键词(KeyWords)： 塔东地区;寒武—奥陶系;碳酸盐岩;沉积相类型;沉积演化
Tadong region;Cambrian-Ordovician;carbonate rock;sedimentary facies type;sedimentary evolution

Abstract:

Keywords:

基金项目(Foundation): 国家重大科技专项“大型油气田及煤层气开发”(2011ZX05001-001-004)

作者(Author): 任延广,张君龙,齐景顺,张亚金,张斌,刘洋
REN Yanguang,ZHANG Junlong,QI Jingshun,ZHANG Yajin,ZHANG Bin,LIU Yang

参考文献(References)：

• [1]周新源,王清华,杨文静,等.塔里木盆地天然气资源及勘探方向[J].天然气地球科学,2005,16(1):7-11.
• [2]杨永剑,刘家铎,田景春,等.塔里木盆地寒武纪层序岩相古地理特征[J].天然气地球科学,2011,22(3):451-458.
• [3]余宽宏,金振奎,李鹏,等.塔东地区寒武—奥陶纪岩相古地理分析[J].西北地质,2010,43(4):113-116.
• [4]张云智.塔里木盆地顺托果勒—满加尔地区寒武系、奥陶系沉积特征[J].矿物岩石,2000,20(2):64-67.
• [5]张月巧,贾进斗,勒久强,等.塔东地区寒武—奥陶系沉积相与沉积演化模式[J].天然气地球科学,2007,18(2):229-233.
• [6]胡九珍,冉启贵,刘树根,等.塔里木盆地东部地区寒武系—奥陶系沉积相分析[J].岩性油气藏,2009,21(2):71-74.
• [7]邵龙义,韩俊,马锋,等.塔里木盆地东部寒武系白云岩储层及相控特征[J].沉积学报,2010,28(5):953-961.
• [8]杨园园,朱玉波,胡志方,等.塔中地区下古生界碳酸盐岩储层特点及预测方法[J].大庆石油地质与开发,2006,25(3):7-9.
• [9]Wilson J L Carbonate facies in eologic time[M].New York:Springer-Verlag,1975:471.
• [10]Tucker M,Wright V P.Carbonate sedimentology[M].Oxford:Blackwell Scientific Publications,1990.
• [11]关士聪,演怀玉,丘东洲,等.中国海陆变迁海域沉积相与油气(晚元古代-三叠纪)[M].北京:科学出版社,1984:272.
• [12]Wilson J L.Carbonate Facies in Geologic History[M].NewYork:Springer,1975:1-471.
• [13]余宽宏,金振奎.地震相在塔里木盆地古城地区碳酸盐岩台地演化及特征分析中的应用[J].天然气地球科学,2011,22(1):115-121.
• [14]黄海平,傅恒,汪瑞良,等.珠江口盆地东部珠江组层序格架下沉积体系分析[J].大庆石油地质与开发,2012,31(2):1-7.
• [15]康志江,李红凯.塔河油田奥陶系碳酸盐岩储集体特征[J].大庆石油地质与开发,2014,33(1):21-26.
• [16]罗俊成,杨海军,朱长见,等.塔里木东部寒武纪—中奥陶世坡折带沉积特征及勘探潜力[J].地质科学,2008,43(4):661-670.
• [17]傅锁堂,黄建松,闫小雄.鄂尔多斯盆地古生界海相碳酸盐岩勘探新领域[J].天然气工业,2002,22(6):17-21.
• [18]Brian P C,Fred J R.High-resolution sequence stratigraphy in Terliary Carbonate-rich sections by thin-sectioned well cuttings[J].AAPG Bulletin,2002,86(8):1407-1415.
• [19]马永生,刘波,梅冥相,等.碳酸盐岩层序地层学近期进展及应用[M].北京:海洋出版社,2003.
• [20]高志前,樊太亮,焦志峰,等.塔里木盆地寒武—奥陶系碳酸盐岩台地样式及其沉积响应特征[J].沉积学报,2006,24(1):19-27.
• [21]高志前,樊太亮,杨红伟,等.塔里木盆地下古生界碳酸盐岩台缘结构特征及其演化[J].吉林大学学报:地球科学版,2012,42(3):657-665.
• [22]高志前,樊太亮,李岩,等.塔里木盆地寒武—奥陶纪海平面升降变化规律研究[J].吉林大学学报:地球科学版,2006,36(4):554-555.
• [23]鲍志东,齐跃春,金之钧,等.海平面波动中的岩溶响应——以塔里木盆地牙哈一英买力地区下古生界为例[J].地质学报,2007,86(2):205-211.
• [24]杨玉平,钟建华,段宏亮,等.高邮凹陷吴堡与句容赤山组沉积特征及地质意义[J].特种油气藏,2013,20(4):45-49.
• [25]顾家裕.塔里木盆地沉积层序特征及其演化[M].北京:石油工业出版社,1996:10-51.