应用有机包裹体研究天然气成藏特征——以鄂尔多斯盆地苏里格气田西部山1段为例
Application of Organic Fluid Inclusion to Study the Characteristics of Gas Reservoir Formation: Example from the Sulige Gas Field in Western Ordos Basin
-
摘要: 通过对苏里格气田西部山1段成岩作用及成岩序列研究,利用有机包裹体岩相学观察和流体包裹体测试析技术,探讨苏里格气田西部山1段天然气成藏特征。研究表明苏里格气田西部山1段成岩作用主要有压实和压溶作用、胶结作用、石英次生加大作用、溶蚀和裂隙作用等。依据有机包裹体分布特征和包裹体物理相态特征可以识别出特征明显的2期包裹体。第一期油气包裹体主要相态为气态烃+盐水、气态烃+液态烃+盐水和气态烃+液态烃,气/液比较小,多呈串珠状定向分布在裂隙中,均一温度相对较低,温度主峰为120℃,代表了早期天然气充注作用,天然气开始形成并初次运移进入储层。第二期油气包裹体主要为纯气相和气态烃+少量盐水,气/液比较大,主要分布在溶蚀孔隙和晚期裂隙中,均一温度相对高,温度主峰为150℃,该期包裹体代表了生气高峰期天然气大规模运移成藏事件,也是研究区最重要的成藏事件。利用Tt曲线方法研究表明,苏里格西部地区山1段天然气开始运移进入储层的时间大约为170Ma(相当于中晚侏罗世),天然气规模成藏时间约为120Ma(相当于早白垩世晚期)。Abstract: After studying the diagenesis sequence about the sandstone gas bed of the Sulige gas field in Western Ordos Basin, the petrography of organic fluid inclusions has been studied through carrying out petrographical observation and fluid inclusion microthermometry under microscope, the homogenization temperatures and salinities of these organic fluid inclusion shave been analyzed, and the formation characteristics of gas reservoir in the Sulige gas field have been discussed in this paper. Results indicate that the sandstone of gas bed had experienced diagenesis of compaction, pressolution, cementation, quartz secondary increase, dissolution and fracturing.According to the distribution characteristics and the physical phase state of organic fluid inclusions, two stages organic fluid inclusions have been identified by microscopeob servation. The first stage organic fluid inclusions mainly are oil/gas inclusions, which are featured with main phases, including gaseous hydrocarbon and brine, gaseous hydrocarbon and liquid hydrocarbon together with brine or gaseous hydrocarbon and liquid hydrocarbon.For the first stage organic fluid inclusions, their volumes of bubble are relatively small, and their homogenization temperatures are relatively low with the main peak around 120℃.These features of first stage organic fluid inclusions represent the formation and initial migration into reservoir of natural gas at early stage.The second stage organic fluid inclusions are characterized with mainly pure gas phase, with a small amount of brine. For the second stage organic fluid inclusions, their volumes of bubble are relatively big, and their homogenization temperatures are relatively high with the main peak around 150℃.The second organic fluid inclusionsare mainly distributed in the dissolution pores or filled in cracks.The second stage organic fluid inclusions stand for the gas formationpeak and large scale migration and accumulation, representing the most important reservoir formation event in this studying area. The T-t curve of chronology shows that the gas initially migrated into reservoir of natural gas since about 170Ma(Middle-Late Jurassic) and the gas accumulated peak happened at about 120Ma (late period of Early Cretaceous).
-
-
孙玉梅.对石油包裹体研究和应用的几点认识[J]. 矿物岩石地球化学通报, 2006, 25(1): 29-32.
SUN Yumei. An overview on petroleum inclusion research and application[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 2006, 25(1): 29-32.
潘立银,倪培,欧光习,等.油气包裹体在油气地质研究中的应用-概念、分类、形成机制及研究意义[J]. 矿物岩石地球化学通报, 2006, 25(1): 19-28.
PAN Liyin, NI Pei, OU Guangxi, et al. Application of organic inclusion study in petroleum geology-conception, classification, formation mechanism and significance[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 2006, 25(1): 19-28.
刘新社, 周立发, 侯云东.运用流体包裹体研究鄂尔多斯盆地上古生界天然气成藏[J]. 石油学报, 2007, 28(6):38-42.
LIU Xinshe, ZHOU Lifa, HOU Yundong. Study of gas charging in the Upper Paleozoic of Ordos Basin using fluid inclusion[J]. Acta Petrolei Sinica, 2007, 28(6):38-42.
柳少波,顾家裕.包裹体在石油地质研究中的应用与问题讨论[J]. 石油与天然气地质, 1997,18(4): 326-342.
LIU Shaobo, GU Jiayu. Application of fluid inclusions to petroleum geological study and discussion[J]. Oil and Gas Geology, 1997, 18(4): 326-342.
赵靖舟.油气成藏年代学研究进展及发展趋势[J]. 地球科学进展, 2002, 17(3): 378-383.
ZHAO Jingzhou. Geochronology of petroleum accumulation: new advance and the future trend[J]. Advance in Earth Sciences,2002, 17(3): 378-383.
李文厚,魏红红, 赵虹.苏里格庙地区二叠系储层特征及有利相带预测[J]. 西北大学学报,2002,32(4):336-340.
LI Wenhou, WEI Honghong, ZHAO Hong. Prediction of oil-bearing facies and reservoir characteristics of Permian System in Suligemiao Region[J]. Journal of Northwest University, 2002,32(4):336-340.
张明禄,达世攀,陈调胜.苏里格气田二叠系盒8段储集层的成岩作用及孔隙演化[J]. 天然气工业,2002, 22(6):13-16.
ZHANG Minglu, DA Shipan, CHEN Diaosheng. Diageneses and pore evolution of P1h18 reservoir in Sulige Gas Field[J]. Natural Gas Industry, 2002, 22(6):13-16.
刘圣志, 李景明, 孙粉锦,等.鄂尔多斯盆地苏里格气田成藏机理研究[J]. 天然气工业, 2005,25(3):4-6.
LIU Shengzhi, LI Jingming, SUN Fenjing, et al. Reservoiring mechanism of Sulige Gas Field in Ordos Basin[J]. Natural Gas Industry, 2005,25(3):4-6.
杨华, 席胜利, 魏新善,等.苏里格地区天然气勘探潜力分析[J]. 天然气工业,2006,26(12):45-48.
YANG Hua, XI Shengli, WEI Xinshan, et al. Analysision gas exploration potential in Sulige area of the Ordos Basin[J]. Natural Gas Industry, 2006,26(12):45-48.
李荣西, 席胜利, 邸领军.用储层油气包裹体岩相学确定油气成藏期次-以鄂尔多斯盆地陇东油田为例[J].石油与天然气地质,2006,27(2):195-199.
LI Rongxi, Xi Shengli,Di Lingjun. Oil/gas reservoiring phases determined through petrographic Analysis of hydrocarbon inclusions in reservoirs: taking Longdong oilfield, Ordos basin, as an example[J]. Oil and Gas Geology, 2006,27(2):195-199.
卢焕章,范宏瑞,倪培,等.流体包裹体[M]. 北京:科学出版社,2004.
LU Huanzhang, FAN Hongrui,NI Pei, et al.Fluid inclusions[M]. Beijing: Science Press,2004.
蔡春芳, 顾家裕, 蔡洪美.塔中地区志留系烃类侵位对成岩作用的影响[J]. 沉积学报, 2001, 19(1): 60-64.
CAI Chunfang, GUJiayu, CAI Hongmei. Effect of hydrocarbon emplacementon diagenesis of Silurian sandstone of central Tarim basin[J]. Acta Sedimentologica Sinica, 2001, 19(1): 60-64.
肖贤明,刘祖发,刘德汉,等.应用储层流体包裹体信息研究天然气气藏的成藏时间[J]. 科学通报,2002,47(12):957-960.
XIAO Xianming,LIU Zufa, LIU Deha, et al. Application of reservoir fluid inclusions Information Research the time of natural gas accumulation[J]. Chinese Science Bulletin,2002,47(12):957-960.
梁积伟,肖丽,高小林,等.鄂尔多斯盆地晚三叠世早期物源分析[J]. 西北地质,2008,41(2): 81-86.
LIANG Jiwei, Xiao Li, GAO Xiaolin, et al. Source Analysis During the early Late Triassic in Ordos Basin[J].North western Geology, 2008,41(2): 81-86.
齐亚林,宋江海,王立社,等. 鄂尔多斯盆地正宁地区延长组长6,长8砂岩储层成岩作用特征[J]. 西北地质,2009,42(3): 95-101.
QI Yalin, SONG Jianghai, WANG Lishe, et al. Reservoir Diagenesis of Chang6-8 in Yangchang Formation of Zhengning Area in Ordos Basin[J]. Northwestern Geology, 2009,42(3): 95-101.
BODNAR R J. Revised equation and stable for determining the freezing point depression of H2O-NaCl solution[J]. Geochimica et Cosmochimica Acta, 1993, 57: 683-684.
LI Rongxi,QIN Xiaoli,DONG Shuwen,et al. Characteristics of hydrocarbon fluid inclusions and their significance for evolution of petroleum systems in the Dabashan foreland, Central China[J]. Acta Geologica Sinica (English Edition), 2015,89(3): 861-875.
LIRongxi, S Dong,X Zhang, et al. Formation of Natural Bitumen and its Implication for Oil/gas Prospect in Dabashan Foreland[J]. Acta Geologica Sinica (English Edition, 2012,86 (2): 462-472.
TILLEY B J, NESBITT B E, LONGSTAFFE F J. Thermal history of Alberta deep basin: Comparative study of fluid inclusion and vitrinite reflectance data[J]. AAPG Bulletin, 1989, 73(10): 1206-1222.
-
计量
- 文章访问数: 2179
- PDF下载数: 2238
- 施引文献: 0
下载: