冯子辉,李强,张亚金,王显东,张振伟
FENG Zihui,LI Qiang,ZHANG Yajin,WANG Xiandong,ZHANG Zhenwei

• 1:大庆油田有限责任公司勘探开发研究院

摘要(Abstract)：

油气成藏条件与分布规律一直是制约古城低凸起油气勘探的重要因素。根据岩心、薄片、分析化验、地球物理及测试压裂等资料,对古城低凸起奥陶系成藏条件进行了分析。研究认为:古城低凸起气源条件优越,具备形成规模气藏的资源潜力,构造定型时间早,后期调整微弱,油气保存条件好;奥陶系颗粒滩相灰岩经早期云化作用叠加裂缝和热液溶蚀改造,局部优化形成裂缝—洞型优质白云岩储层,是油气良好储集空间;多期活动的断裂形成大量裂缝,沟通了深部热液,改善了储层,还作为沟通深部油气源通道,控制油气藏的形成;古城低凸起发生了2期油气充注,第1期充注发生在加里东晚期—海西早期,以成熟液态烃类为主,第2期充注主要发生在喜山期,以原油裂解气为主;鹰山组三段白云岩气藏为喜山期充注的裂缝—孔洞型岩性气藏,油气成藏分布主要受控于优质储层、构造活动、断裂、油气源和盖层条件。
Poor understandings of the hydrocarbon accumulation conditions and distribution laws are the major constraint of the petroleum exploration in Gucheng Low Uplift at present. On the basis of the core observation, rock thin sections, analytical test, geophysical data and testing data, the comprehensive analyses were performed for the Ordovician hydrocarbon accumulation conditions in Gucheng Low Uplift. The studies show that there are abundant gas source and a certain-scale resource potential to accumulate gas reservoir in Gucheng Low Uplift and the structures were shaped earlier and the hydrocarbon preserving conditions are much better; for Ordovician grained shoal limestone, through early dolomitisation, the fractures were overlaid, and moreover they were reformed by the hydrothermal alteration and partially optimized to form fracture-vug high-quality dolomite reservoir with much better hydrocarbon accumulation space; the multi-period activities of the fault results in a large number of the fractures, thus the deep hydrothermal fluid has been channeled, the reservoirs have been improved, in addition, the connected deep hydrocarbon source can control the accumulation of the hydrocarbon; two stages of the hydrocarbon infilling happened in Gucheng Low Uplift: the first occurred from Late Caledonian to Early Hercynian Epoch, taking the early-maturity liquid hydrocarbon as the main form, the second mainly occurred in the Himalayan epoch, taking the oil crack as the main form; Member-3 dolomite gas reservoir in Yingshan Formation belongs to the fracture-vug lithological gas reservoir infilled in the Himalayan Epoch, the hydrocarbon distribution is mainly controlled by the high-quality reservoirs, structural activities, faults, petroleum sources and caprock conditions.

关键词(KeyWords)： 古城低凸起;奥陶系;天然气;白云岩滩体;气藏
Gucheng Low Uplift;Ordovician;natural gas;dolomite beach;gas reservoir

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气股份公司重大科技专项“塔东天然气成藏理论及勘探配套技术研究”(2016E-0204)

作者(Author): 冯子辉,李强,张亚金,王显东,张振伟
FENG Zihui,LI Qiang,ZHANG Yajin,WANG Xiandong,ZHANG Zhenwei

DOI: 10.19597/j.issn.1000-3754.201907042

参考文献(References)：

• [1]吴国干,夏斌,王核,等.塔东地区构造变形特征及其分区[J].新疆地质,2003,21(4):407-411.WU Guogan,XIA Bin,WANG He,et al.The characteristics and partitioning of tectonic deformatrion in East Tarim Basin[J].Xinjiang Geology ,2003,21(4):407-411.
• [2]厉玉乐,王显东,孙效东,等.古城低凸起构造演化及有利勘探方向[J].大庆石油地质与开发,2014,33(5):97-102.LI Yule,WANG Xiandong,SUN Xiaodong,et al.Structural evolution and favorable exploration direction for Gucheng Low Uplift[J].Petroleum Geology & Oilfield Development in Daqing,2014,33(5):97-102.
• [3]吴斌,何登发,孙方源.塔里木盆地古城低凸起下古生界的断裂特征及成因机制[J].天然气地球科学,2015,26(5):871-879.WU Bin,HE Dengfa,SUN Fangyuan,et al.Fault characteristic and genetic mechanism of the Lower Palcozoic in Gucheng Lower Uplift,Tarim Basin[J].Natural Gas Geoscience,2015,26(5):871-879.
• [4]田小彬.古城低凸起下古生界碳酸盐岩断裂发育特征与形成演化[J].大庆石油地质与开发,2015,34(6):8-12.TIAN Xiaobin.Fault development characteristics and formation evolution for Lower Paleozoic carbonatite in Gucheng Low Uplift[J].Petroleum Geology & Oilficld Development in Daqing,2015,34(6):8-12.
• [5]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.GAO Zhiqian,FAN Tailiang,JIAO Zhifeng,et al.The structural types and depositional characteristics of carbonate platform in the Cambrian-Ordovician of Tarim Basin[J].Acta Sedimentologica Sinica,2006,24(1):19-27.
• [6]张月巧,贾进斗,靳久强,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):229-234.ZHANG Yueqiao,JIA Jindou,JIN Jiuqiang,et al.Chararteristics of Cambrian-Ordovician sedimentary facics in Tadong region and its sedimentary model[J].Natural Gas Geoscience,2007,18(2):229-234.
• [7]林畅松,杨海军,蔡振中,等.塔里木盆地奥陶纪碳酸盐岩台地的层序结构演化及其对盆地过程的响应[J].沉积学报,2013,31(5):907-919.LIN Changsong,YANG Haijun,CAI Zhenzhong,et al.Evolution of depositional architecture of the Ordovician carbonate platform in the Tarim Basin and its response to basin processes[J].Acta Sedimentologica Sinica,2013,31(5):907-919.
• [8]任延广,张君龙,齐景顺,等.塔东地区寒武—奥陶系碳酸盐岩沉积特征及演化规律[J].大庆石油地质与开发,2014,33(5):103-110.REN Yanguang,ZHANG Junlong,QI Jingshun,et al.Sedimentary characteristics and evolution laws of Cambrian-Ordovician carbonate rocks in Tadong region[J].Petroleum Geology & Oilfield Development in Daqing,2014,33(5):103-110.
• [9]刘策,张义杰,李洪辉,等.塔里木盆地古城地区奥陶系鹰山组层序地层划分及其地质意义[J].东北石油大学学报,2017,41(1):82-96.LIU Ce,ZHANG Yijie,LI Honghui,et al.Sequence stratigraphy classification and its geologic implications of Ordovician Yingshan Formation in Gucheng area,Tarim Basin[J].Journal of Northeast Petroleum University,2017,41(1):82-96.
• [10]张光亚,刘伟,张磊,等.塔里木克拉通寒武纪—奥陶纪原型盆地、岩相古地理与油气[J].地学前缘,2015,22(3):269-276.ZHANG Guangya,LIU Wei,ZHANG Lei,et al.Cambrian-Ordovician prototypic basin,palegeogrtaphy and petroleum of Tarim Carton[J].Earth Science Frontiers,2015,22(3):269-276.
• [11]卢曦.塔里木盆地古城地区下古生界碳酸盐岩成岩作用及储层孔隙特征[J].大庆石油地质与开发,2016,35(4):15-21.LU Xi.Lower Paleozoic carbonate reservoir diagenesis and pore characteristics in Gucheng area of Tarim Basin[J].Petroleum Geology & Oilfield Development in Daqing,2016,35(4):15-21.
• [12]郑兴平,张友,陈希光,等.塔里木盆地东部碳酸盐岩储层特征与天然气勘探方向[J].天然气地球科学,2016,27(5):765-771.ZHENG Xingping,ZHANG You,CHEN Xiguang,et al.Natural gas exploration domains and analysis of carbonate reservoir characteristics in the east of Tarim Basin,NW China[J].Natural Gas Geoscience,2016,27(5):765-771.
• [13]邵红梅,冯子辉,王成,等.塔里木盆地古城地区下古生界白云岩储层类型及成因[J].大庆石油地质与开发,2014,33(5):111-116.SHAO Hongmei,FENG Zihui,WANG Cheng,et al.Types and geneses of the dolomite reservoirs in Lower Paleozoic of Gucheng area of Tarim Basin[J].Petroleum Geology & Oilfield Development in Daqing,2014,33(5):111-116.
• [14]唐照星,曹自成,汪新文,等.塔里木盆地古城墟隆起鹰山组内幕储层特征及影响因素[J].岩性油气藏,2013,25(4):44-49.TANG Zhaoxing,CAO Zicheng,WANG Xinwen,et al.Reservoir characteristics and influencing factors in the inner Yingshan Formation in Guchengxu Uplift,Tarim Basin[J].Lithologic Reservoirs,2013,25(4):44-49.
• [15]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.YU Kuanhong,JIN Zhenkui.Application of seismic facies analysis method in studies of evolution and characteristics of Gucheng Platform in Tarim Basin[J].Natural Gas Geoscience,2011,22(1):115-121.
• [16]赵明,甘华军,岳勇,等.塔里木盆地古城墟隆起西端奥陶系碳酸盐岩储层特征及预测[J].中国地质,2009,36(1):93-100.ZHAO Ming,GAN Huajun,YUE Yong,et al.Characteristics of Ordovician carbonate reservoirs in the western plunge of Gucheng-xu Uplift,Tarim Basin[J].Geology in China,2009,36(1):93-100.
• [17]沙旭光,马庆佑,吕海涛,等.塔里木盆地古城墟隆起奥陶系油气成藏特征及主控因素[J].海相油气地质,2014,19(2):15-22.SHA Xuguang,MA Qingyou,Lü Haitao,et al.Hydrocarbon accumulation and main controlling factors of Ordovician reservoir in Guchengxu Uplift,Tarim Basin[J].Marine Origin Petroleum Geology,2014,19(2):15-22.
• [18]王招明,杨海军,齐英敏,等.塔里木盆地古城地区奥陶系天然气勘探重大突破及其启示[J].天然气工业,2014,34(1):1-9.WANG Zhaoming,YANG Haijun,QI Yingmin,et al.Ordovician gas exploration breakthrough in the Gucheng Lower Uplift of the Tarim Basin and its enlightenment[J].Natural Gas Industry,2014,34(1):1-9.
• [19]程宏岗,冉启贵,王宗礼,等.塔东地区下古生界原油裂解气资源评价[J].天然气地球科学,2009,20(5):707-711.CHENG Honggang,RAN Qigui,WANG Zongli,et al.Resources assessment of the Lower Paleozoic oil cracked gas in Eastern Tarim Basin[J].Natural Gas Geoscience,2009,20(5):707-711.
• [20]刘卫红,高先志,叶信林,等.塔东地区下古生界天然气成藏主控因素及勘探领域[J].海相油气地质,2017,22(4):61-68.LIU Weihong,GAO Xianzhi,YE Xinlin,et al.Conditions for gas accumulation and potential areas in Lower Paleozoic Eastern Tarim Basin[J].Marine Origin Petroleum Gelolgy,2017,22(4):61-68.
• [21]钱玲,李江海,卢玉红,等.塔东地区古城4井和罗西1井油气成藏差异性分析[J].天然气地球科学,2011,22(4):628-634.QIAN Ling,LI Jianghai,LU Yuhong,et al.Difference analysis on hydrocarbon accumulations in two wells of Gucheng 4 and Luoxi 1 in the eastern Tarim Basin[J].Natural Gas Geoscience,2011,22(4):628-634.
• [22]王铁冠,宋到福,李美俊,等.塔里木盆地顺南—古城地区奥陶系鹰山组天然气气源与深层天然气勘探前景[J].石油与天然气地质,2014,35(6):753-762.WANG Tieguan,SONG Daofu,LI Meijun,et al.Natural gas source and deep gas exploration potential of the Ordovician Yingshan Formation in the Shunnan-Gucheng region,Tarim Basin[J].Oil & Gas Geology,2014,35(6):753-762.
• [23]冉启贵,程宏岗,肖中尧,等.塔东地区构造热事件及其对原油裂解的影响[J].现代地质,2008,22(4):541-548.RAN Qigui,CHENG Honggang,XIAO Zhongyao,et al.Tectono-thermal event and its influence on cracking of crude oil in Eastern Tarim Basin[J].Geoscience,2008,22(4):541-548.
• [24]丁寒生.塔东古城地区鹰山组白云岩暴露标志识别及其油气地质意义[J].大庆石油地质与开发,2017,36(4):15-19.DING Hansheng.Identification of the dolomite exposure marks in Eagle Mountain Formation and its petroleum geological significance in Gucheng area of East Tarim Basin[J].Petroleum Geology & Oilfield Development in Daqing,2017,36(4):15-19.
• [25]戴金星,戚厚发,郝石生,等.天然气地质学概论[M].北京:石油工业出版社,1985:1-203.DAI Jinxing,QI Houfa,HAO Shisheng,et al.An introduction to natural gas geology[M].Beijing:Petroleum Industry Press,1985:1-203.
• [26]戴金星.天然气地质和地球化学论文集(卷2) [M].北京:石油工业出版社,2000:1-287.DAI Jinxing.Selected works of natural gas geology and geochemistry(Vol.2)[M].Beijing:Petroleum Industry Press,2000:1-287.