川中中台山地区侏罗系自流井组大安寨段致密油储层孔隙结构特征
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摘要
致密储层岩石孔隙结构对致密储层中油气的储集能力和渗流机理有着重要影响。为了更好的对研究工区内甜点进行有效的识别,进一步指导后续的致密油开采,笔者运用氩离子抛光扫描电镜技术、低温氮气吸附脱附法和高压压汞实验对川中中台山地区侏罗系大安寨段致密油储层的微观孔隙结构进行了详细的研究。研究结果表明:1川中地区侏罗系大安寨段致密储层孔径范围主要集中在微米-纳米级,孔隙类型可分为有机质孔、无机孔、裂缝,其中有机质孔对储层的贡献最大;2有机质孔内TOC的含量与有机质孔的数量,两者之间呈现较好的正相关;3致密储层微观孔隙结构类型复杂多样,孔径主要分布在3~30 nm,以中孔为主、大孔和微孔不发育;4黏土矿物含量、脆性矿物含量、有机碳含量、有机质热演化程度、成岩作用、保存条件共同影响着致密储层的孔隙结构。在上述研究的基础,分析了川中地区致密储层孔隙结果的影响因素,为后续的致密油甜点识别提供了地质依据。
The pore structure of tight reservoir is the main factor that influences the capacity of tight oil reservoir and the characteristics of seepage flow. In order to better the research area dessert for identification and further guide the subsequent tight oil extraction,the author uses the argon ion polishing scanning electron microscope technology,cryogenic nitrogen gas adsorption desorption adsorption method and mercury porosimetry experiments detailed research has been made on the micro pore structure of Sichuan in Taishan area of DAANZAI member in dense oil reservoir. The results of the study show that: 1 in Sichuan region of DAANZAI member in tight reservoir pore size of micron to nano scale,pore types can be divided into the hole of organic matter and inorganic pore,micro cracks,the organic pore the development; 2 organic pore TOC content,between the two showed good positive correlation; 3 the tight reservoir,the types of microcosmic pore structure and complex,aperture main distribution in3 ~ 30 nm,dominated by holes,macropore and micropore agenesis; 4 the content of clay minerals,brittle mineral content,organic carbon content,organic matter thermal evolution degree,diagenesis,preservation conditions of tight reservoir pore structure has an important influence. On the basis of the above research,the influencing factors of the pore result of tight reservoir in Central Sichuan are analyzed,which provides a geological basis for the subsequent identification of dense oil.
The pore structure of tight reservoir is the main factor that influences the capacity of tight oil reservoir and the characteristics of seepage flow. In order to better the research area dessert for identification and further guide the subsequent tight oil extraction,the author uses the argon ion polishing scanning electron microscope technology,cryogenic nitrogen gas adsorption desorption adsorption method and mercury porosimetry experiments detailed research has been made on the micro pore structure of Sichuan in Taishan area of DAANZAI member in dense oil reservoir. The results of the study show that: 1 in Sichuan region of DAANZAI member in tight reservoir pore size of micron to nano scale,pore types can be divided into the hole of organic matter and inorganic pore,micro cracks,the organic pore the development; 2 organic pore TOC content,between the two showed good positive correlation; 3 the tight reservoir,the types of microcosmic pore structure and complex,aperture main distribution in3 ~ 30 nm,dominated by holes,macropore and micropore agenesis; 4 the content of clay minerals,brittle mineral content,organic carbon content,organic matter thermal evolution degree,diagenesis,preservation conditions of tight reservoir pore structure has an important influence. On the basis of the above research,the influencing factors of the pore result of tight reservoir in Central Sichuan are analyzed,which provides a geological basis for the subsequent identification of dense oil.
引文
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22吴元燕,吴胜和,蔡正其.油矿地质学.北京:石油工业出版社,2005:207-224Wu Yuanyan,Wu Shenghe,Cai Zhengqi.Oil field geology.Beijing:Petreoleum Industry Press,2005:207-224
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25王道富,王玉满,董大忠,等.川南下寒武统筇竹寺组页岩储集空间定量表征.天然气工业,2013;33(7):1-10Wang Daofu,Wang Yuman,Dong Dazhong,et al.Quantitative characterization of reservoir space in the Lower Cambrian.Natural Gas Industry,2013;33(7):1-10
26侯读杰,包书景,毛小平,等.页岩气资源潜力评价的几个关键问题讨论.地球科学与环境学报,2012;34(3):7-16Hou Dujie,Bao Shujing,Mao Xiaoping,et al.Discussion on the key issues of resource potential evaluation for shale gas.Journal of Earth Science and Environment,2012;34(3):7-16
27 Lee J O,Kang I M,Cho W J.Smectite alteration and its influence on the barrier properties of smectite clay for a repository.Applied Clay Science,2010;47(1-2):99-104
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2潘仁芳,黄晓松.页岩气及国内勘探前景展望.中国石油勘探,2009;14(3):1-6Pan Renfang,Huang Xiaosong.Shale gas and its exploration prospects in China.China Petroleum Exploration,2009;14(3):1-6
3陈波,兰正凯.上扬子地区下寒武统页岩气资源潜力.中国石油勘探,2009;14(3):10-14Chen Bo,Lan Zhengkai.Lower Cambrian shale gas resource potential in Upper Yangtze region.China Petroleum Exploration,2009;14(3):10-14
4董大忠,程克明,王玉满,等.中国上扬子区下古生界页岩气形成条件及特征.石油与天然气地质,2010;31(3):288-299Dong Dazhong,Cheng Keming,Wang Yuman,et al.Forming conditions and characteristics of shale gas in the Lower Paleozoic of the Upper Yangtze region,China.Oil&Gas Geology,2010;31(3):288-299
5王世谦,陈更生,董大忠,等.四川盆地下古生界页岩气藏形成条件与勘探前景.天然气工业,2009;29(5):51-58Wang Shiqian,Chen Gengsheng,Dong Dazhong,et al.Accumulation conditions and exploration prospect of shalegas in the Lower Paleozoic Sichuan Basin.Natural GasI ndustry,2009;29(5):51-58
6邹才能,朱如凯,白斌,等.中国油气储层中纳米孔首次发现及其科学价值.岩石学报,2011;27(6):1857-1864Zou Caineng,Zhu Rukai,Bai Bin,et al.First discovery of nanopore throat in oil andgas reservoir in China and its scientific value.Acta Petrologica Sinica,2011;27(6):1857-1864
7张金川,徐波,聂海宽,等.中国页岩气资源勘探潜力.天然气工业,2008;28(6):136-140Zhang Jinchuan,Xu Bo,Nie Haikuan,et al.Exploration potential of shale gas resources in China.Natural Gas Industry,2008;28(6):136-140
8张利萍,潘仁芳.页岩气的主要成藏要素与气储改造.中国石油勘探,2009;14(3):20-23Zhang Liping,Pan Renfang.Major accumulation factors and storage reconstruction of shale gas reservoir.China Petroleum Exploration,2009;14(3):20-23
9潘仁芳,伍媛,宋争.页岩气勘探的地球化学指标及测井分析方法初探.中国石油勘探,2009;14(3):6-9,28Pan Renfang,Wu Yuan,Song Zheng.Geochemical parameters for shale gas exploration and basic methods for well logginganalysis.China Petroleum Exploration,2009;14(3):6-9,28
10国土资源部油气资源战略研究中心.全国石油天然气资源评价.北京:中国大地出版社,2010Ministry of Land and Resources,Strategic Research Center of Oil and Gas Resource.National oil and gas resource assessment.Beijing:China Land Press,2010
11李军,陶士振,汪泽成,等.川东北地区侏罗系油气地质特征与成藏主控因素.天然气地球科学,2010;21(5):733-738Li Jun,Tao Shizhen,Wang Zecheng,et al.Characteristics of jurassic petroleum geology and main factors of hydrocarbon accumulation in NE sichuan basin.Natural Gas Geoscience,2010;21(5):733-738
12陈盛吉,万茂霞,杜敏,等.川中地区侏罗系油气源对比及烃源条件研究.天然气勘探与开发,2005;28(2):11-14Chen Shengji,Wan Maoxia,Du Min,et al.Jurassic oil-gas source correlation and hydrocarbon source condition in central sichuan region.Natural Gas Exploraiton&Development,2005;28(2):11-14
13李耀华.四川盆地下侏罗统陆相有机质演化特征与油气分布规律.西南石油学院学报,1998;20(1):38-41Li Yaohua.Characteristics of terrestrial organic matter evolution and regularity of hydrocarbon distribution in lower jurassic in Sichuan Basin.Journal of Southwest Petroleum Institute,1998;20(1):38-41
14蒋裕强,漆麟,邓海波,等.四川盆地侏罗系油气成藏条件及勘探潜力.天然气工业,2010;30(3):22-26Jiang Yuqing,Qi Lin,Deng Haibo,et al.Hydrocarbon accumulation conditions and exploration potentials of the Jurassic reservoirs in the Sichuan Basin.Natural Gas Industry,2010;30(3):22-26
15 Loucks R G,Reed R M,Ruppel S C,et al.Morphology,genesis,and distribution of nanometer-scale pores in siliceous mudstones of the mississippian barnett shale.Journal of Sedimentary Research,2009;79(12):848-861
16钟太贤.中国南方海相页岩孔隙结构特征.天然气工业,2012;32(9):1-4Zhong Taixian.Characteristics of pore structure of marine shales in South China.Natural Gas Industry,2012;32(9):1-4
17陈尚斌,朱炎铭,王红岩,等.川南龙马溪组页岩气储层纳米孔隙结构特征及其成藏意义.煤炭学报,2012;37(3):438-444Chen Shangbin,Zhu Yanming,Wang Hongyan,et al.Structure characteristics and accumulation significance of nanopores in Longmaxi shale gas reservoir in the southern Sichuan Basin.Journal of China Cocal Society,2012;37(3):438-444
18龙鹏宇,张金川,唐玄,等.泥页岩裂缝发育特征及其对页岩气勘探和开发的影响.天然气地球科学,2011;22(3):525-532Long Pengyu,Zhang Jinchuan,Tang Xuan,et al.Feature of muddy Shale fissure and its effect for shale gas exploration and development.Natural Gas Geoscience,2011;22(3):525-532
19聂海宽,张金川,包书景,等.页岩气成藏体系研究---以四川盆地及其周缘下寒武统为例.西安石油大学学报(自然科学版),2012;27(3):8-14Nie Haikuan,Zhang Jinchuan,Bao Shujing,et al.Study on the accumulation systems of shale gas:taking the lower cambrian in Sichuan Basin and its periphery as an example.Journal of Xi'an Shiyou University(Natural Science Edition),2012;27(3):8-14
20王炜,刘若冰,倪凯.川东北侏罗系千佛崖组页岩气勘探潜力分析.西安石油大学学报(自然科学版),2012;27(6):36-41Wang Wei,Liu Ruobing,Ni Kai.Analysis of the exploration potential of shale gas in Jurassic Qianfoya Formation in northeast sichuan basin.Journal of Xi'an Shiyou University(Natural Science Edition),2012;27(6):36-41
21陈桂华,祝彦贺,徐强.页岩气成藏的四性特征及对下扬子地区页岩气勘探的启示.中国石油勘探,2012;17(5):63-70Chen Guihua,Zhu Yanhe,Xu Qiang.Four characteristics of shale gas play and enlightenment to shale gas exploration in Lower Yangtze Area.China Petroleum Exploration,2012;17(5):63-70
22吴元燕,吴胜和,蔡正其.油矿地质学.北京:石油工业出版社,2005:207-224Wu Yuanyan,Wu Shenghe,Cai Zhengqi.Oil field geology.Beijing:Petreoleum Industry Press,2005:207-224
23李琦.泥岩裂缝油气藏地质模型与成因机制研究---以河口地区沙三段泥岩裂缝油气藏为例.武汉:中国地质大学出版社,2005Li Qi.Geological models and origin mechanism of mudstone fractured reservoirs:a case study of Es:in the shahejieF m,Hekou,Jiyang Depression.Wuhan:China University of Geosciences Press,2005
24刘辉,吴少华,姜秀民,等.快速热解褐煤焦的低温氮吸附等温线形态分析.煤炭学报,2005;30(4):507-510Liu Hui,Wu Shaohua,Jiang Xiumin,et al.The configuration analysis of the adsorption isotherm ofnitrogen in low temperature with the lignite char produced under fast pyrolysis.Journal of Chian Coal Society,2005;30(4):507-510
25王道富,王玉满,董大忠,等.川南下寒武统筇竹寺组页岩储集空间定量表征.天然气工业,2013;33(7):1-10Wang Daofu,Wang Yuman,Dong Dazhong,et al.Quantitative characterization of reservoir space in the Lower Cambrian.Natural Gas Industry,2013;33(7):1-10
26侯读杰,包书景,毛小平,等.页岩气资源潜力评价的几个关键问题讨论.地球科学与环境学报,2012;34(3):7-16Hou Dujie,Bao Shujing,Mao Xiaoping,et al.Discussion on the key issues of resource potential evaluation for shale gas.Journal of Earth Science and Environment,2012;34(3):7-16
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