收稿日期: 2016-06-01
修回日期: 2016-09-12
网络出版日期: 2017-08-10
基金资助
国家科技重大专项(编号:2016ZX05004-002);中国石油天然气股份有限公司重大科技专项“深层油气勘探开发关键技术研究”(编号:2014E-32)联合资助.
The facies and porosity origin of reservoirs:Case studies from Longwangmiao Formation of Cambrian,Sichuan Basin,and their implications to reservoir prediction
Received date: 2016-06-01
Revised date: 2016-09-12
Online published: 2017-08-10
寒武系龙王庙组白云岩已经成为四川盆地非常重要的天然气勘探领域，并在高石梯_磨溪地区发现了万亿方储量规模的大气藏，但对储层成因和分布规律认识不清已经成为制约龙王庙组白云岩勘探的瓶颈。基于露头地质调查、岩心和薄片观察、储层地球化学特征及储层模拟实验，对这套白云岩储层的特征、成因和分布规律做了深入的研究，取得2项认识:一是四川盆地寒武系龙王庙组可划分为上、下2段，编制了以段为单元的岩相古地理图2张，建立了碳酸盐岩缓坡沉积模式，颗粒滩主要分布于上段的浅缓坡；二是颗粒滩是龙王庙组白云岩储层发育的基础，同生溶蚀作用是龙王庙组颗粒滩储层孔隙发育的关键，受暴露面控制，埋藏期溶蚀孔洞不但有规模，而且主要沿同生期的孔隙带发育，具继承性，分布有规律可预测。龙王庙组白云岩储层成因地质认识揭示储层的发育不仅限于高石梯_磨溪构造表生岩溶发育区，全盆地广布的颗粒滩相沉积都是潜在的勘探对象。
沈安江，陈娅娜，潘立银，王龙，佘敏 . 四川盆地下寒武统龙王庙组沉积相与储层分布预测研究[J]. 天然气地球科学, 2017 , 28(8) : 1176 -1190 . DOI: 10.11764/j.issn.1672-1926.2016.11.001
The dolostone of Cambrian Longwangmiao Formation has been significant gas exploration area in Sichuan Basin.In Gaoshiti-Moxi regions,giant gas pool with thousands of billion cubic meters’ reserve has been discovered.But the origin of reservoir and the distribution patterns were still in dispute,which has constrained the dolostone exploration of Longwangmiao Formation.Based on the outcrop geological survey,cores and thin-sections observation,reservoir geochemical characteristics study and reservoir simulation experiments,this paper focuses on the characteristics,origin and distribution patterns of the dolostone reservoir in Longwangmiao Formation.Two achievements were acquired:①The Longwangmiao Formation of Cambrian could be divided into upper part and lower part in Sichuan Basin.Based on the two parts of Longwangmiao Formation,two ligthofacies paleogeographic maps were accomplished and the carbonate ramp sedimentary models were established.The grainstone shoals are mainly distributed in the shallow ramp of the upper part in Longwangmiao Formation.②The grainstone shoals are the developing basis of dolostone reservoir in Longwangmiao Formation and the contemporaneous dissolution was the key factors of the development of grainstone shoal reservoir in Longwangmiao Formation.Controlled by the exposure surface,the dissolution vugs are not only extensively distributed,but also successionally developed along the contemporaneous pore zones.The distribution patterns could be predicted.The geological understandings of the origin of dolostone reservoir in Longwangmiao Formation show that the reservoir distributed in the areas of karstification in Gaoshiti-Moxi regions,and the widespread grainstone shoals in the whole basin are the potential exploration targets.
[1]Ran Longhui,Xie Yaoxiang,Dai Tanshen.New knowledge of [HJ2mm]gas-bearing potential in Cambrian System of southwest Sichuan Basin[J].Natural Gas Industry,2008,28(5):5-9,135-136.[冉隆辉,谢姚祥,戴弹申.四川盆地东南部寒武系含气前景新认识[J].天然气工业,2008,28(5):5-9,135-136.]
[2]Wei Guoqi,Du Jinhu,Xu Chunchun,et al.Characteristics and accumulation modes of large gas reservoirs in Sinian-Cambrian of Gaoshiti-Moxi region,Sichuan Basin[J].Acta Petrolei Sinica,2015,36(1):1-12.[魏国齐,杜金虎,徐春春,等.四川盆地高石梯—磨溪地区震旦系—寒武系大型气藏特征与聚集模式[J].石油学报,2015,36(1):1-12.]
[3]Wang Zecheng,Wang Tongshan,Wen Long,et al.Basic geological characteristics and accumulation conditions of Anyue giant Gasfield,Sichuan Basin[J].China Offshore Oil and Gas,2016,28(2):45-52.[汪泽成,王铜山,文龙,等.四川盆地安岳特大型气田基本地质特征与形成条件[J].中国海上油气,2016,28(2):45-52.]
[4]Zhang Jianyong,Luo Wenjun,Zhou Jingao,et al.Main origins of high quality reservoir of Lower Cambrian Longwangmiao Formation in the giant Anyue Gasfield,Sichuan Basin,SW China[J].Natural Gas Geoscience,2015,26(11):2063-2074.[张建勇,罗文军,周进高,等．四川盆地安岳特大型气田下寒武统龙王庙组优质储层形成的主控因素[J].天然气地球科学,2015,26(11):2063-2074.]
[5]Liu Mancang,Yang Wei,Li Qirong,et al.Characteristics and stratigraphic classification and correlation of Cambrian on south Sichuan Basin[J].Natural Gas Geoscience,2008,19(1):100-103,105-106.[刘满仓,杨威,李其荣,等.四川盆地蜀南地区寒武系地层划分及对比研究[J].天然气地球科学,2008,19(1):100-103,105-106.]
[6]Li Lei,Xie Jinsong,Deng Hongbin,et al.Study on characteristics and its stratigraphic classification and correlation of Cambrian in Sichuan Basin[J].Geology and Mineral Resources of South China,2012,28(3):197-202.[李磊,谢劲松,邓鸿斌,等.四川盆地寒武系划分对比及特征[J].华南地质与矿产,2012,28(3):197-202.]
[7]Liu Baojun,Xu Xiaosong.Lithofacies Paleogeography of Sinian-Triassic in South China[M].Beijing:Science Press,1994:1-239[刘宝珺,许效松.中国南方岩相古地理图集:震旦纪_三叠纪[M].北京:科学出版社,1994:1-239]
[8]Wang Zecheng.Structural Evolution of Central Sichuan Paleo-uplift and Its Controlling Effect on Giant Gas Province Formation,Sichuan Basin[R].Beijing:PetroChina Research Institute of Petroleum Exploration&Development,2013.[汪泽成.四川盆地川中古隆起构造演化及对大气区形成的控制作用研究[R].北京：中国石油勘探开发研究院,2013.]
[9]Adams J E,Rhodes M L.Dolomitization by seepage refluxion[J].AAPG Bulletin,1961,44(12):1921-1920.
[10]Mckenzie J A,Hsu K J,Schneider J E.Movement of subsurface waters under the sabkha,Abu Dhabi,UAE,and its relation to evaporative dolomite genesis[C]//Zenger D H,Dunham J B,Ethington R L.Concepts and Models of Dolomitization.Tulsa:OK.SEPM Special Publication,1980:11-30.
[11]Hardie L A.Dolomitization:a critical view of some current views[J].Journal of Sedimentary Petrology,1987,57(1):166-183.
[12]Montanez I P.Late diagenetic dolomitization of Lower Ordovician,Upper Knox Carbonates:a record of the hydrodynamic evolution of the southern Appalachian Basin[J].AAPG Bulletin,1994,77(8):1210-1239.
[13]Vahrenkamp V C,Swart P K .Late Cenozoic dolomites of the Bahamas:metastable analogues for the genesis of ancient platform dolomites[C]//B.Purser,M.Tucker,and D.Zenger,eds.,Dolomites,International Association of Sedimentologists Special Publication,1994:133-153.
[14]Mattes B W,Mountjoy E W.Burial dolomitization of the Upper Devonian Miette buildup,Jasper National Park,Alberta[C]//Zenger D H,Dunham J B,Ethington R L,.Concepts and Models of Dolomitization.Tulsa,OK:SEPM Special Publication,1980:259-297.
[15]Davis G R,Smith L B.Structurally Controlled Hydrothermal Dolomite Reservoir Facies:An overview[J].AAPG Bulletin,2006,89(11):1636-1684.
[16]Zhao Wenzhi,Shen Anjiang,Hu Suyun,et al.Types and distributional features of Cambrian-Ordovician dolostone reservoirs in Tarim Basin,northwestern China[J].Acta Petrologica Sinica,2012,28(3):758-768.[赵文智,沈安江,胡素云,等.塔里木盆地寒武-奥陶系白云岩储层类型和分布特征[J].岩石学报,2012,28(3):758-768.]
[17]Zhao Wenzhi,Shen Anjiang,Zheng Jianfeng,et al.The porosity origin of dolostone reservoirs in the Tarim,Sichuan and Ordos Basins and its implication to reservoir prediction[J].Science China:Earth Sciences,2014,44(9):1925-1939.[赵文智,沈安江,郑剑锋,等.塔里木、四川及鄂尔多斯盆地白云岩储层孔隙成因探讨及对储层预测的指导意义[J].中国科学:地球科学,2014,44(9):1925-1939.]
[18]Zheng Jianfeng,Shen Anjiang,Qiao Zhanfeng,et al.Genesis of dolomite and main controlling factors of reservoir in Penglaiba Formation of Lower Ordovician,Tarim Basin:A case study of Dabantage outcrop in Bachu area[J].Acta Petrologica Sinica,2013,19(9):3223-3232.[郑剑锋,沈安江,乔占峰,等.塔里木盆地下奥陶统蓬莱坝组白云岩成因及储层主控因素分析—以巴楚大班塔格剖面为例[J].岩石学报,2013,19(9):3223-3232.]
[19]Shen Anjiang,Zheng Jianfeng,Pan Wenqing,et al.Types andcharacteristics of Lower Paleozoic dolostone reservoirs in Tarim Basin[J].Marine Origin Petroleum Geology,2009,14(4)：1-9.[沈安江,郑剑锋,潘文庆,等.塔里木盆地下古生界白云岩储层类型及特征[J].海相油气地质,2009,14(4)：1-9.]
[20]Zheng Jianfeng,Shen Anjiang,Mo Niya,et al.Genesis and feature identification of Cambrian-Lower Ordovician dolostone in Tarim Basin[J].Marine Origin Petroleum Geology,2010,15(1)：6-14.[郑剑锋,沈安江,莫妮亚,等.塔里木盆地寒武系—下奥陶统白云岩成因及识别特征[J].海相油气地质,2010,15(1)：6-14.]
[21]Su Zhongtang,Chen Hongde,Xu Fenyan,et al.Geochemistry and dolomitization mechanism of Majiagou dolomites in Ordovician,Ordos,China[J].Acta Petrologica Sinica,27(8) :2230-2238.[苏中堂,陈洪德,徐粉燕,等.鄂尔多斯盆地马家沟组白云岩地球化学特征及白云岩化机制分析[J].岩石学报,2011,27（8)：2230-2238.]
[22]Shen Anjiang,Zhou Jingao,Xin Yongguang,et al.Types and genesis of Leikoupo Formation,Sichuan Basin[J] .Marine Origin Petroleum Geology,2008,13（4)：19-28.[沈安江,周进高,辛勇光,等.四川盆地雷口坡组白云岩储层类型及成因[J].海相油气地质,2008,13（4)：19-28.]
[23]Arthur M A,Anderson T F,Kaplan I R,et al.Stable Isotopes in Sedimentary Geology (SEPM Short Course No.10)[M]:Tulsa,1983:1-121.
[24]Hoefs J.Stable Isotope Geochemistry[M].Third Edition.New York:Springer-Verlag,1987:1-241.
[25]Budd D A,Hammes U,Ward W B.Cathodoluminescence in calcite cements:new insights on Pb and Zn sensitizing,Mn activation,and Fe quenching at low trace-element concentrations[J].Journal of Sedimentary Research,2000,70(1),217-226.
[26]Olivarez A M,Owen R M.The europium anomaly of seawater:implications for fluvial versus hydrothermal REE inputs to the oceans[J].Chemical Geology,1991,92(4):317-328.
[27]Hu Zhonggui,Zheng Rongcai,Hu Jiuzhen,et al.Geochemical characteristics of rare earth elements of Huanglong Formation dolomites reservoirs in eastern Sichuan-northern Chongqing area[J].Acta Geological Sinica,2009,83（6)：782-790.[胡忠贵,郑荣才,胡九珍,等.川东—渝北地区黄龙组白云岩储层稀土元素地球化学特征[J].地质学报,2009,83（6)：782-790.]
[28]Fairbridge R W.The dolomite question[C]//LeBlanc R J,Breeding J G.Regional Aspects of Carbonate Deposition.Tulsa:SEPM Special Publication No.5,1957:125-178.
[29]Moore C H.Carbonate Reservoirs-Porosity Evolution and Diagenesis in a Sequence Stratigraphic Framework[M].
Amsterdam-London-New York-Oxford-Paris-Shannon-Tokyo:Elsevier,2001:293-298.
[30]Lucia F J.Carbonate Reservoir Characterization[M].Berlin Heidelberg:Springer-Verlag,1999:1-226.
[31]Yang Yu.Sinian-Lower Paleozoic Play Evaluation,Target Optimization and Exploration Deployment of Central Sichuan Paleo-uplift[R].Chengdu:PetroChina Southwest Oil & Gasfield Company,2013:1-45.[杨雨.川中古隆起震旦系_下古生界区带评价、目标优选与勘探部署[R].成都：西南油气田分公司,2013:1-45]
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号