巴麦地区晚石炭世碳酸盐岩台内滩储层综合评价
摘要
碳酸盐岩台内滩是重要的油气勘探目标,但关于台内滩储层的形成与评价研究相对薄弱。以巴麦地区先巴扎区块上石炭统小海子组作为研究碳酸盐岩台内滩的典型实例,"露头-岩心-镜下-测井-地震"五位一体综合分析表明,小海子组发育竹蜓类生屑滩、藻核形石滩、生屑滩、砂屑滩和薄皮鲕粒滩等5种碳酸盐岩台内滩,形成于海侵背景下、内缓坡台地中的微低古隆起环境,受控于构造变形和海平面变化。优质储层受开阔台地浅滩沉积作用和(准)同生期成岩作用控制;纵向上小海子组下亚段的储层物性比上亚段好;平面上Ⅰ类储层自Bt8井沿北东东向至西南向呈条带状展布,与台内古地貌较高区域相对应;Ⅱ类储层主要发育在台内古地貌较低区域,呈零散的片状分布。
Both domestic and abroad petroleum production demonstrate that carbonate inner platform shoals have been the most important targets for hydrocarbon exploration.But domestic researches on the creation and development of inner platform shoal reservoirs are relatively inadequate,the authors provide a new typical case of inner-platform shoals concerning Xiaohaizi Formation of Late Carboniferous in Bamai region,Tarim basin.Based on the integrative investigation of outcrops,cores,thin sections,logs,and seismic data,it is found that inner platform buildup is composed of fusulinid bioclastic,algal oncoid,and bioclastic and superficial oolitic,and sand shoals,and thereby deduced that these shoals formed in inner ramp micro-paleo-uplift environment under the global transgression setting,and controlled by tectonic deformation and sea level change.Also it is inferred that most high-quality reservoir rocks occur vertically in the lower part of Xiaohaizi Formation,and that horizontally the excellent reservoir rocks(reservoir rock typeⅠ) extend from the northeastern well Bt 8 to the southwestern corresponding to the highest relief in the open-marine inner platform paleoenvironment,and the good reservoir rocks(reservoir rock typeⅡ) appear scatteredly corresponding to the higher relief.Ultimately,it is concluded that the formation and distribution of high-quality inner platform shoal reservoirs are primarily influenced by open-marine inner platform shoal sedimentation and the early diagenesis.
Both domestic and abroad petroleum production demonstrate that carbonate inner platform shoals have been the most important targets for hydrocarbon exploration.But domestic researches on the creation and development of inner platform shoal reservoirs are relatively inadequate,the authors provide a new typical case of inner-platform shoals concerning Xiaohaizi Formation of Late Carboniferous in Bamai region,Tarim basin.Based on the integrative investigation of outcrops,cores,thin sections,logs,and seismic data,it is found that inner platform buildup is composed of fusulinid bioclastic,algal oncoid,and bioclastic and superficial oolitic,and sand shoals,and thereby deduced that these shoals formed in inner ramp micro-paleo-uplift environment under the global transgression setting,and controlled by tectonic deformation and sea level change.Also it is inferred that most high-quality reservoir rocks occur vertically in the lower part of Xiaohaizi Formation,and that horizontally the excellent reservoir rocks(reservoir rock typeⅠ) extend from the northeastern well Bt 8 to the southwestern corresponding to the highest relief in the open-marine inner platform paleoenvironment,and the good reservoir rocks(reservoir rock typeⅡ) appear scatteredly corresponding to the higher relief.Ultimately,it is concluded that the formation and distribution of high-quality inner platform shoal reservoirs are primarily influenced by open-marine inner platform shoal sedimentation and the early diagenesis.
引文
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[2]Stacy Lynn Reeder,Eugene C,Rankey.InteractionsBetween Tidal Flows and Ooid Shoals,NorthernBahamas[J].Journal of Sedimentary Research,2008,78:175-186.
[3]王振宇,严威,张云峰,等.塔中16-44井区上奥陶统台缘礁滩体沉积特征[J].新疆石油地质,2007,28(6):681-683.Wang Zhenyu,Yan Wei,Zhang Yunfeng,et al.Depositional Characteristics of Upper OrdovicianPlatform Margin Reefs in Well Block Tz16-44,TarimBasin[J].Xinjiang Petroleum Geology,2007,28(6):681-683.
[4]王招明,张丽娟,王振宇,等.塔里木盆地奥陶系礁滩体特征与油气勘探[J].中国石油勘探,2007,12(6):1-7.Wang Zhaoming,Zhang Lijuan,Wang Zhenyu,et al.Features of Ordovician Reef Beach and ExplorationActivities in Tarim Basin[J].China PetroleumExploration,2007,12(6):1-7.
[5]陈强路,周凌方,张根法,等.塔里木盆地巴楚—麦盖提地区油气勘探领域评价[J].石油实验地质,2009,31(4):343-349.Chen Qianglu,Zhou Lingfang,Zhang Genfa,et al.Evaluation of Oil and Gas Exploration Domains inBachu-Maigaiti Area of Tarim Basin[J].PetroleumGeology&Experiment,2009,31(4):343-349.
[6]Bilal U Haq,Stephen R,Schutter.A Chronology ofPaleozoic Sea-Level Changes[J].Science,2008,322:64-68.
[7]郭建华,孙磉墩,许杰,等.塔里木盆地巴楚地区石炭系层序地层学特征[J].中南大学学报:自然科学版,2010,41(1):257-264.Guo Jianhua,Sun Sangdun,Xu Jie,et al.SequenceStratigraphy of Carboniferous at Bachu Area,TarimBasin[J].Journal of Central South University:Scienceand Technology,2010,41(1):257-264.
[8]朱如凯,罗平,罗忠.塔里木盆地晚泥盆世及石炭纪岩相古地理[J].古地理学报,2002,4(1):13-24.Zhu Rukai,Luo Ping,Luo Zhong.LithofaciesPalaeogeography of the Late Devonian andCarboniferous in Tarim Basin[J].Journal ofPalaeogeography,2002,4(1):13-24.
[9]刘志宏,王文革,林东成.塔里木盆地吐木休克断裂带断层封闭性研究[J].吉林大学学报:地球科学版,2003,33(1):19-25.Liu Zhihong,Wang Wenge,Lin Dongcheng.Study onthe Faults Sealing Properties of Tumuxiuke Fault Beltin Tarim Basin[J].Journal of Jilin University:EarthScience Edition,2003,33(1):19-25.
[10]刘志宏,迟元林,王孔伟,等.塔里木盆地西部断层的活动性与封闭性[J].吉林大学学报:地球科学版,2004,34(1):61-66.Liu Zhihong,Chi Yuanlin,Wang Kongwei,et al.Activity and Sealing Property of Faults in theWestern Part of Tarim Basin[J].Journal of JilinUniversity:Earth Science Edition,2004,34(1):61-66.
[11]刘志宏,王孔伟,张立国.塔里木盆地巴东4构造与油气[J].吉林大学学报:地球科学版,2005,35(1):27-32.Liu Zhihong,Wang Kongwei,Zhang Liguo.Structure and Hydrocarbon of the Badong in TarimBasin[J].Journal of Jilin University:Earth ScienceEdition,2005,35(1):27-32.
[12]赵治信,张桂芝,肖继南,等.新疆古生代地层及牙形石[M].北京:石油工业出版社,2000.Zhao Zhixin,Zhang Guizhi,Xiao Jinan,et al.PaleozoicStrata and Conodonts in Xinjiang[M].Beijing:Petroleum Industry Press,2000.
[13]郭倩,蒲仁海.塔里木盆地巴麦地区石炭系低速异常碳酸盐岩的解释[J].吉林大学学报:地球科学版,2011,41(3):689-696.Guo Qian,Pu Renhai.Interpretation of CarboniferousLow Velocity Anomalous Carbonate in the BamaiArea,Tarim Basin[J].Journal of Jilin University:Earth Science Edition,2011,41(3):689-696.
[14]丁文龙,林畅松,漆立新,等.塔里木盆地巴楚隆起构造格架及形成演化[J].地学前缘,2008,15(2):242-252.Ding Wenlong,Lin Changsong,Qi Lixin,et al.Structural Framework and Evolution of Bachu Upliftin Tarim Basin[J].Earth Science Frontiers,2008,15(2):242-252.
[15]皇甫红英,温爱琴,武涛.塔里木盆地巴楚隆起石炭—二叠系碳酸盐岩成岩作用[J].新疆地质,2001,19(4):260-262.Huangfu Hongying,Wen Aiqin,Wu Tao.Dia-genesis of the Carbonates of Carboniferous andPermian in Bachu Area of Tarim Basin[J].XinjiangGeology,2001,19(4):260-262.
[16]朱如凯,罗平,罗忠.塔里木盆地石炭系碳酸盐岩同位素地球化学特征[J].新疆石油地质,2002,23(5):382-384.Zhu Rukai,Luo Ping,Luo Zhong.The IsotopeGeochemistry Characteristics of Carbonate Rocks inCarboniferous in Tarim Basin[J].Xinjiang PetroleumGeology,2002,23(5):382-384.
[17]王大锐,白玉雷,贾承造.塔里木盆地油区石炭系海相碳酸盐岩同位素地球化学研究[J].石油勘探与开发,2001,28(6):38-41.Wang Darui,Bai Yulei,Jia Chengzao.Stable IsotopicGeochemistry of the Carboniferous Marine Carbonatesin the Tarim Basin[J].Petroleum Exploration andDevelopment,2001,28(6):38-41.
[18]Grtsch J,Mercadier C.Integrated 3D ReservoirModeling Based on 3D Seismic:The TertiaryMalampaya and Camago Buildups,OffshorePalawan,Philippines[J].AAPG Bull,1999,83:1703-1728.
[19]Grtsch J,Suwaina O,Ajlani G,et al.The ArabFormation in Central Abu Dhabi:3D ReservoirArchitecture and Static and Dynamic Modeling[J].Geo Arabia,2003,8:47-86.
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