和田河气田奥陶系碳酸盐岩裂缝特征及形成期次
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摘要
塔里木盆地巴楚隆起和田河气田奥陶系碳酸盐岩储集层非均质性强,孔喉结构较差,溶洞、溶孔多被充填,裂缝发育程度成为决定气田产能的主要因素。根据对岩心裂缝的观察发现,研究区储集层裂缝大部分为构造缝,西部高角度裂缝发育,东部低角度和高角度裂缝共同发育。利用露头剖面上裂缝的切割关系、产状、充填关系、充填物碳氧同位素及流体包裹体等综合分析认为,研究区裂缝的形成主要有3期,分别为海西运动早期、海西运动晚期和喜马拉雅运动期。
The Ordovician carbonate reservoir in Hetianhe gas field of Bachu uplift, Tarim basin has strong heterogeneity and poor porethroat structure. Most of the karst caves and dissolved pores of the reservoir are filled, and the degree of fracture development becomes themain factor to determine the productivity of the gas field. According to the observation of fissures in the core, it is found that the fractures ofthe reservoir in the study area are mostly structural fractures. High-angle fractures are developed in the west, and both low-angle and high-angle fractures occur in the east. Based on dissection, occurrence and filling of fractures on the sections of outcrops and the comprehensiveanalysis on isotopes of oxygen and carbon of the fillings and fluid inclusions, it is considered that the fractures were formed in 3 periodssuch as early Hercynian movement, late Hercynian movement and Himalayan movement.
The Ordovician carbonate reservoir in Hetianhe gas field of Bachu uplift, Tarim basin has strong heterogeneity and poor porethroat structure. Most of the karst caves and dissolved pores of the reservoir are filled, and the degree of fracture development becomes themain factor to determine the productivity of the gas field. According to the observation of fissures in the core, it is found that the fractures ofthe reservoir in the study area are mostly structural fractures. High-angle fractures are developed in the west, and both low-angle and high-angle fractures occur in the east. Based on dissection, occurrence and filling of fractures on the sections of outcrops and the comprehensiveanalysis on isotopes of oxygen and carbon of the fillings and fluid inclusions, it is considered that the fractures were formed in 3 periodssuch as early Hercynian movement, late Hercynian movement and Himalayan movement.
引文
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[16]徐文礼,郑荣才,费怀义,等.土库曼斯坦阿姆河右岸卡洛夫—牛津阶裂缝特征及形成期次[J].天然气工业,2012,32(4):33-38.XU Wenli,ZHENG Rongcai,FEI Huaiyi,et al.Characteristics andtiming of fractures in the Callovian-Oxfordian boundary of the rightbank of the Amu Darya river,Turkmenistan[J].Natural Gas Indus-try,2012,32(4):33-38.
[17]白斌,邹才能,朱如凯,等.四川盆地九龙山构造须二段致密砂岩储层裂缝特征、形成时期与主控因素[J].石油与天然气地质,2012,33(4):526-535.BAI Bin,ZOU Caineng,ZHU Rukai,et al.Characteristics,timingand controlling factors of structural fractures in tight sandstones ofthe 2nd member of Xujiahe formation in Jiulong Mountain struc-ture,Sichuan basin[J].Oil&Gas Geology,2012,33(4):526-535.
[2]赖生华,余谦,周文,等.楚雄盆地北部上三叠统—侏罗系裂缝发育期次[J].石油勘探与开发,2004,31(5):25-29.LAI Shenghua,YU Qian,ZHOU Wen,et al.Development periods offractures in the Late Triassic-Jurassic in the north Chuxiong basin[J].Petroleum Exploration and Development,2004,31(5):25-29.
[3]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):64-77.HE Dengfa,JIA Chengzao,LI Desheng,et al.Formation and evolu-tion of polycyclic superimposed Tarim basin[J].Oil&Gas Geology,2005,26(1):64-77.
[4]贾承造.塔里木盆地构造特征与油气聚集规律[J].新疆石油地质,1999,20(3):177-183.JIA Chengzao.Structural characteristics and oil/gas accumulativeregularity in Tarim basin[J].Xinjiang Petroleum Geology,1999,20(3):177-183.
[5]汤良杰.塔里木盆地构造演化与构造样式[J].地球科学,1994,19(6):742-754.TANG Liangjie.Evolution and tectonic patterns of Tarim basin[J].Earth Science,1994,19(6):742-754.
[6]付建奎,张光亚,马郡,等.塔里木盆地巴楚地区构造样式与演化[J].石油勘探与开发,1999,26(5):10-11.FU Jiankui,ZHANG Guangya,MA Jun,et al.The structural stylesand their evolution in Bachu area of Tarim basin[J].Petroleum Exploration and Development,1999,26(5):10-11.
[7]孟祥杰,高志前,樊太亮,等.塔里木盆地中—下奥陶统台缘结构特征及油气指示意义[J].新疆石油地质,2015,36(3):293-298.MENG Xiangjie,GAO Zhiqian,FAN Tailiang,et al.Structural char-acteristics of carbonate platform margins in Lower-Middle Ordovi-cian of Tarim basin and related hydrocarbon implication[J].Xinji-ang Petroleum Geology,2015,36(3):293-298.
[8]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 frame-work and evolution of Bachu uplift in Tarim basin[J].Earth ScienceFrontiers,2008,15(2):242-252.
[9]周文,张银德,王洪辉,等.楚雄盆地北部T3-J地层天然裂缝形成期次确定[J].成都理工大学学报(自然科学版),2008,35(2):121-126.ZHOU Wen,ZHANG Yinde,WANG Honghui,et al.Determinationof fracture's development periods of T3-J formation in the north ofChuxiong basin of Yunnan,China[J].Journal of Chengdu Universi-ty of Technology(Science&Technology Edition),2008,35(2):121-126.
[10]EPSTEIN S,BUCHSBAUM H A,LOWENSTAM H,et al.Revisedcarbonate-water isotopic temperature scale[J].Geological Societyof America Bulletin,1953,64(11):1 316-1 326.
[11]邓虎成,周文,姜文利,等.鄂尔多斯盆地麻黄山西区块延长、延安组裂缝成因及期次[J].吉林大学学报(地球科学版),2009,39(5):811-817.DENG Hucheng,ZHOU Wen,JIANG Wenli,et al.Genetic mecha-nism and development periods of fracture in Yanchang and Yan'anformation of western Mahuangshan block in Ordos basin[J].Jour-nal of Jilin University(Earth Science Edition),2009,39(5):811-817.
[12]张冲,刘鸿博,姚勇,等.普光气田飞仙关组储集层裂缝特征及期次[J].新疆石油地质,2014,35(5):521-525.ZHANG Chong,LIU Hongbo,YAO Yong,et al.Fracture character-istics and formation period of Feixianguan reservoir in Puguang gasfield[J].Xinjiang Petroleum Geology,2014,35(5):521-525.
[13]李慧莉,邱楠生,金之钧,等.塔里木盆地的热史[J].石油与天然气地质,2005,26(5):613-617.LI Huili,QIU Nansheng,JIN Zhijun,et al.Geothermal history ofTarim basin[J].Oil&Gas Geology,2005,26(5):613-617.
[14]冯乔.塔里木盆地满加尔凹陷地层埋藏史与有机质成熟演化[J].沉积学报,1997,15(1):173-177.FENG Qiao.Burial history of stratigraphy and maturity evolution oforganic matter in Manjiaer depression Tarim basin[J].Acta Sedi-mentologica Sinica,1997,15(1):173-177.
[15]刘文斌,姚素平,胡文,等.流体包裹体的研究方法及应用[J].新疆石油地质,2003,24(3):264-267.LIU Wenbin,YAO Suping,HU Wenxuan,et al.Application and re-search approaches of fluid inclusions[J].Xinjiang Petroleum Geol-ogy,2003,24(3):264-267.
[16]徐文礼,郑荣才,费怀义,等.土库曼斯坦阿姆河右岸卡洛夫—牛津阶裂缝特征及形成期次[J].天然气工业,2012,32(4):33-38.XU Wenli,ZHENG Rongcai,FEI Huaiyi,et al.Characteristics andtiming of fractures in the Callovian-Oxfordian boundary of the rightbank of the Amu Darya river,Turkmenistan[J].Natural Gas Indus-try,2012,32(4):33-38.
[17]白斌,邹才能,朱如凯,等.四川盆地九龙山构造须二段致密砂岩储层裂缝特征、形成时期与主控因素[J].石油与天然气地质,2012,33(4):526-535.BAI Bin,ZOU Caineng,ZHU Rukai,et al.Characteristics,timingand controlling factors of structural fractures in tight sandstones ofthe 2nd member of Xujiahe formation in Jiulong Mountain struc-ture,Sichuan basin[J].Oil&Gas Geology,2012,33(4):526-535.