Genetic types and exploration potential of pre-Mesozoic dolomite reservoirs in Yakela fault arch and its surrounding areas, Tarim Basin
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摘要: 钻井岩心、薄片观察和物性资料分析表明,塔北雅克拉断凸及周缘地区前中生界白云岩至少发育3种类型的白云岩储层:风化壳岩溶型、暴露浅滩型和埋藏岩溶型。风化壳岩溶型储层主要受控于古潜山形态,是本区勘探最主要的储层类型;暴露浅滩型储层主要受沉积微相控制,台内滩环境、早期大气淡水淋滤及埋藏成岩环境有机酸的溶蚀是这类储层形成的关键因素;埋藏岩溶型储层主要受埋藏期流体和成岩环境控制。本区白云岩储层形成具有多期次、多类型地质作用的特征,有利的古构造位置和原始沉积相带、建设性成岩作用(白云化作用、溶蚀作用)和断裂及裂缝的发育是白云岩储层形成的关键要素,上覆盖层特别是舒善河组的发育程度是本区白云岩储层油气成藏的关键因素。Abstract: The analyses of drilling cores, thin sections and physical properties show that there are at least three types of pre-Mesozoic dolomite reservoirs in the Yakela fault arch and its surrounding areas, including weathering crust, exposed shoal and buried karst. The weathering crust reservoirs are mainly controlled by ancient buried hills, and serve as the most important reservoir type in the study area. The exposed shoal reservoirs are controlled by sedimentary microfacies, and the environments like platform shoal, atmospheric fresh-water leaching and organic acid corrosion play important roles during reservoir formation. The buried karst reservoirs are controlled by the fluid during the burial period and the diagenetic environment. The dolomite reservoirs in the study area are formed under various geological processes during different stages. Ancient tectonic location, favorable facies, constructive diagenetic effects (dolomitization, dissolution) as well as faults and fissures are the key elements for dolomite reservoir formation. The covering formations, especially the Shushanhe Formation, are decisive for hydrocarbon accumulation in dolomite reservoirs.
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Key words:
- reservoir characteristics /
- dolomite /
- pre-Mesozoic /
- Yakela fault arch /
- Tarim Basin
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[1] 郑兴平,刘永福,张杰,等.塔里木盆地塔中隆起北坡鹰山组白云岩储层特征与成因[J]石油实验地质,2013,35(2):157-161. Zheng Xingping,Liu Yongfu,Zhang Jie,et al.Characteristics and origin of dolomite reservoirs in Lower Ordovician Yingshan Formation,northern slope of Tazhong uplift,Tarim Basin[J].Petroleum Geology & Experiment,2013,35(2):157-161. [2] 黄擎宇,张哨楠,叶宁,等.玉北地区下奥陶统白云岩岩石学、地球化学特征及成因[J].石油与天然气地质,2014,35(3):391-400. Huang Qingyu,Zhang Shaonan,Ye Ning,et al.Petrologic,geochemical characteristics and origin of the Lower Ordovician dolomite in Yubei area[J].Oil & Gas Geology,2014,35(3):391-400. [3] 张静,罗平.塔里木盆地奥陶系孔隙型白云岩储层成因[J].石油实验地质,2010,32(5):470-474. Zhang Jing,Luo Ping. Genesis of Ordovician matrix-porosity do-lomite reservoir in the Tarim Basin[J].Petroleum Geology & Experiment,2010,32(5):470-474. [4] 乔桂林,钱一雄,曹自成,等.塔里木盆地玉北地区奥陶系鹰山组储层特征及岩溶模式[J].石油实验地质,2014,36(4):416-421. Qiao Guilin,Qian Yixiong,Cao Zicheng,et al.Reservoir characteristics and karst model of Ordovician Yingshan Formation in Yubei area,Tarim Basin[J].Petroleum Geology & Experiment,2014,36(4):416-421. [5] 郑和荣,吴茂炳,邬兴威,等.塔里木盆地下古生界白云岩储层油气勘探前景[J].石油学报,2007,28(2):1-8. Zheng Herong,Wu Maobing,Wu Xingwei,et al.Oil gas exploration prospect of dolomite reservoir in the Lower Paleozoic of Tarim Basin[J].Acta Petrolei Sinica,2007,28(2):1-8. [6] 王梅岭,赵敖山,吕媛娥.新疆塔里木盆地沙雅隆起雅克拉断凸储层特征[J].石油实验地质,1999,21(4):311-315. Wang Meiling,Zhao Aoshan,Lü Yuane.Reservior characteristics of Yakela block in the northern Tarim Basin[J].Experimental Petroleum Geology,1999,21(4):311-315. [7] 邢秀娟,焦存礼,王毅,等.塔北地区寒武系白云岩特征与成因研究[J].石油实验地质,2011,33(2):130-136. Xing Xiujuan,Jiao Cunli,Wang Yi,et al.Characteristics and origin of Cambrian dolomite,northern Tarim Basin[J].Petroleum Geology & Experiment,2011,33(2):130-136. [8] 侯方浩,方少仙,沈昭国,等.白云岩体表生成岩裸露期古风化壳岩溶的规模[J].海相油气地质,2005,10(1):19-30. Hou Fanghao,Fang Shaoxian,Shen Zhaoguo,et al.The scale of dolostone bodies palaeoweathering crust karsting hyperdiagenesis exposure phase[J].Marine Origin Petroleum Geology,2005,10(1):19-30. [9] 仵永强,郑伟东.塔里木盆地三道桥地区潜山储层预测[J].断块油气田,2013,20(4):439-442. Wu Yongqiang,Zheng Weidong.Buried hill reservoir prediction in Sandaoqiao Area of Tarim Baisn[J].Fault-Block Oil & Gas Field,2013,20(4):439-442. [10] 张静,胡见义,罗平,等.深埋优质白云岩储集层发育的主控因素与勘探意义[J].石油勘探与开发,2010,37(2):203-210. Zhang Jing,Hu Jianyi,Luo Ping,et al.Master control factors of deep high-quality dolomite reservoirs and the exploration significance[J].Petroleum Exploration and Development,2010,37(2):203-210. [11] Wierzbicki R,Dravis J J,Al-Aasm I,et al.Burial dolomitization and dissolution of Upper Jurassic Abenaki platform carbonates,Deep Panuke reservoir,Nova Scotia,Canada[J].AAPG Bulletin,2006,90(11):1843-1861. [12] 邹才能,陶士振,周慧,等.成岩相的形成、分类与定量评价方法[J].石油勘探与开发,2008,35(5):526-540. Zou Caineng,Tao Shizhen,Zhou Hui,et al.Genesis,classification and evaluation method of diagenetic facies[J].Petroleum Exploration and Development,2008,35(5):526-540. [13] 何莹,鲍志东,沈安江,等.塔里木盆地牙哈—英买力地区寒武系—下奥陶统白云岩形成机理[J].沉积学报,2006,24(6):806-818. He Ying,Bao Zhidong,Shen Anjiang,et al.The Genetic Mechanism of dolostones of the Cambrian- Lower Ordovician in Yaha-Yingmaili Region,Tarim Basin:dolomitization through deep buried hydrothermal fluid[J].Acta Sedimentologica Sinica,2006,24(6):806-818. [14] 郭建华.塔北、塔中地区下古生界深埋藏古岩溶[J].中国岩溶,1996,15(3):207-216. Guo Jianhua.On the palaeokarst of Lower Palaeozoic Group,Tarbei and Tarzhong regions of Tarim[J].Carsologica Sinica,1996,15(3):207-216. [15] 张学丰,胡文瑄,张军涛,等.塔里木盆地下奥陶统白云岩化流体来源的地球化学分析[J].地学前缘,2008,15(2):80-89. Zhang Xuefeng,Hu Wenxuan,Zhang Juntao,et al.Geochemical analyses on dolomitizing fluids of Lower Ordovician carbonate reservoir in Tarim basin[J].Earth Science Frontiers,2008,15(2):80-89.
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