安徽巢湖下志留统高家边组页岩储集性能初步研究
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摘要
巢湖地区下志留统高家边组页岩XRD衍射分析表明,页岩主要由伊利石,绿泥石和石英组成。根据沉降法获得石英等脆性矿物平均含量约为67.8%,黏土矿物平均含量约为25.12%。场发射环境扫描电镜对样品进行微观孔隙结构观察,发现页岩的孔隙主要有4种类型,即粒间孔隙、粒内孔隙、裂缝孔隙和溶蚀孔隙。其中粒间孔隙和溶蚀孔隙大量发育,它们是页岩气的重要的储集空间;裂缝孔隙发育良好,是页岩气运移的主要通道。页岩成分和结构之间关系进一步分析表明,页岩中石英等大量脆性矿物的存在,有利于页岩中裂缝的形成;而黏土矿物的存在,不仅能增加有机质含量,并且有利于页岩气的储集。综合分析认为,巢湖地区下志留统高家边组页岩具有较好的储集性能。
X-ray diffraction analysis of sale of lower Silurian Gaojiabian Formation in the Chaohu area showed that the shale mainly consists of illite,chlorite and quartz.By sedimentation method the gained content of quartz and other brittle minerals is about 67.8%in average,clay minerals 25.12%.Field emission-environment scanning electron microscope used to observe microscopic pore structure of samples found that the shale has four major types of pore such as intergranular pore,intragranular pore,fracture pore and dissolved pore,of which intergranular pore and dissolved pore are largely developed serving as major reservoir space for shale gas,fissure pore is also well developed as the major passage for shale gas migration.Further analysis of relation between shale composition and texture indicated that a large quantity of brittle minerals such as quartz existing in shale favor formation of fissures in shale;and clay minerals in shale can increase content of organic matter and also help to amass shale gas.To sum it as a whole,this shale is good in reservoir performance.
X-ray diffraction analysis of sale of lower Silurian Gaojiabian Formation in the Chaohu area showed that the shale mainly consists of illite,chlorite and quartz.By sedimentation method the gained content of quartz and other brittle minerals is about 67.8%in average,clay minerals 25.12%.Field emission-environment scanning electron microscope used to observe microscopic pore structure of samples found that the shale has four major types of pore such as intergranular pore,intragranular pore,fracture pore and dissolved pore,of which intergranular pore and dissolved pore are largely developed serving as major reservoir space for shale gas,fissure pore is also well developed as the major passage for shale gas migration.Further analysis of relation between shale composition and texture indicated that a large quantity of brittle minerals such as quartz existing in shale favor formation of fissures in shale;and clay minerals in shale can increase content of organic matter and also help to amass shale gas.To sum it as a whole,this shale is good in reservoir performance.
引文
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[20]黄保家,施荣富,赵幸滨,周刚.下扬子皖南地区古生界页岩气形成条件及勘探潜力评价[J].煤炭学报,2013,38(5):877-882.
[21]宋宁,杨帅帅,候鹏飞,郭海莹,王广利.下扬子地区五峰组-高家边组页岩气形成条件[J].科技导报,2013,31(33):42-46.
[22]杨振恒,李志明,王果寿,腾格尔,申宝剑.北美典型页岩气藏岩石学特征、沉积环境和沉积模式及启示[J].地质科技情报,2010,29(6):59-65.
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[24]刘石磊.下扬子地区下志留统页岩气资源分布[D].成都成都理工大学,2012.
[25]宋叙,王思波,曹涛涛,宋之光.扬子地台寒武系泥页岩甲烷吸附特征[J].地质学报,2013,87(7):1041-1048.
[26]谢晓永,唐洪明,王春华,白蓉,王自力.氮气吸附法和压汞法在测试泥页岩孔径分布中的对比[J].天然气工业,2006,26(12):100-102.
[27]张莹.岩石铸体薄片孔隙度图像测量技术研究[D].成都:西南石油大学,2012.
[28]陈尚斌,朱炎铭,王红岩,刘洪林,魏伟,方俊华.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[J].煤炭学报,2012,37(3):438-444.
[2]Montgomery S L,Jarvie D M,Bowker K A,Pollastro R M.Mississippian Barnett Shale Xort Worth Basin porthcentral Texas:gasshale play with multitrillion cubic foot potential[J].American Association of Petroleum geologists Bulletin,2005,89(2):155-175
[3]Ross D J,Bustin R M.Shale gas potential of the Lower Jurassic Gordondale Member portheastern British Columbia,Canada[J].AAPG Bulletin,2007,55(1):51-75
[4]Schieber J.Common themes in the formation and preservation of intrinsic porosity in shales and mudstones:Illustrated with examples across the Phanerozoic[C]//Proceeding of SPE Unconventional Gas Conference.SPE 132370.Allen,TX:Society of Petroleum Engineers,2010:10.
[5]Bustin R M.Gas shale tapped for big pay[J].AAPG Explorer,2005 26(2)5-7.
[6]Chalmers G R L,Bustin R M.The organic matter distribution and methane capacity of the Lower Cretaceous strata of Northeastern British Columbia[J].International Journal of Coal Geology,2007,70(1-3):223-239.
[7]Strapoc D,Mastalerz M,Schimmelmann A,Drobniak A,Hasenmueller N R.Geochemical constraints on the origin and volume of gas in the New Albany Shale(DevonianMississippian)eastern Illinois Basin[J].AAPG Bulletin,2010,94(11):1713-1740.
[8]Jarvie D M,Hill R J,Ruble T E.Unconventional shale gas systems The Mississippian Barnett shale of north-central Texas as one model for thermogenic shale-gas assessment[J].AAPG Bulletin,2007,91(4)475-499.
[9]Creties D Jenkins,Charles M Boyer.煤层气和页岩气藏[J].JPT,2008,(1):92-99.
[10]Li Shuangying,Tong Jinnan,Liu Kongyan Wang Fanjian Huo Yangyang.The Lower Triassic cyclic deposition in Chaohu,Anhui Province,China[J].Palaeogeography,Palaeoclimatology,Palaeoecology 2(107,252:188-199.
[11]罗超,刘树根,孙玮,冉波,雍自权,杨迪,张旋,王世玉,叶玥豪,邓宾.上扬子区下寒武统牛蹄塘组页岩气基本特征研究[J].天然气地球科学,2014,25(3)453-470.
[12]陈更生,董大忠,王世谦,王兰生.页岩气藏形成机理与富集规律初探[J].天然气工业,2009,29(5):17-21.
[13]李拒源.东营凹陷泥页岩矿物组成及脆度分析[J].沉积学报.2013,31(4):616-620.
[14]刘树根,马文辛,LUBA Jansa,黄文明曾祥亮胀长俊.四川盆地东部地区下志留统龙马溪组页岩储层特征[J].岩石学报,2011,27(8)2239-52.
[15]闫存章,黄玉珍,葛春梅,董大忠,程克明.页岩气是潜力巨大的非常规天然气资源[J].天然气工业,2009,29(5):1-6.
[16]董大忠,邹才能,李建忠,王社教,李新景,王玉满,李登华,黄金亮.页岩气资源潜力与勘探开发前景[J].地质通报,2011,30(2-3):324-336.
[17]李娟,于炳松,张金川,李玉喜,武景淑.黔北地区下寒武统黑色页岩储层特征及其影响因素[J].石油与天然气地质,2012,33(3):364-374.
[18]王丽波,久凯,曾维特,付景龙,赵松.上扬子黔北地区下寒武统海相黑色泥页岩特征及页岩气远景区评价[J].岩石学报,2013,29(9):3263-3278.
[19]杨超,张金川,唐玄.鄂尔多斯盆地陆相页岩微观孔隙类型及对页岩气储渗的影响田.地学前缘,2013,20(4):240-250.
[20]黄保家,施荣富,赵幸滨,周刚.下扬子皖南地区古生界页岩气形成条件及勘探潜力评价[J].煤炭学报,2013,38(5):877-882.
[21]宋宁,杨帅帅,候鹏飞,郭海莹,王广利.下扬子地区五峰组-高家边组页岩气形成条件[J].科技导报,2013,31(33):42-46.
[22]杨振恒,李志明,王果寿,腾格尔,申宝剑.北美典型页岩气藏岩石学特征、沉积环境和沉积模式及启示[J].地质科技情报,2010,29(6):59-65.
[23]吉利明,邱军利,张同伟,夏燕青.泥页岩主要黏土矿物组分甲烷吸附实验[J].地球科学,2012,37(5):1043-1050.
[24]刘石磊.下扬子地区下志留统页岩气资源分布[D].成都成都理工大学,2012.
[25]宋叙,王思波,曹涛涛,宋之光.扬子地台寒武系泥页岩甲烷吸附特征[J].地质学报,2013,87(7):1041-1048.
[26]谢晓永,唐洪明,王春华,白蓉,王自力.氮气吸附法和压汞法在测试泥页岩孔径分布中的对比[J].天然气工业,2006,26(12):100-102.
[27]张莹.岩石铸体薄片孔隙度图像测量技术研究[D].成都:西南石油大学,2012.
[28]陈尚斌,朱炎铭,王红岩,刘洪林,魏伟,方俊华.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[J].煤炭学报,2012,37(3):438-444.
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