新疆塔河油田西南部东河塘组沉积相和储层特征研究
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摘要
2000年以来,塔河油田西南部多口井钻遇东河砂岩段,岩性以灰白色石英砂岩、岩屑石英砂岩为主且油迹发育层段多,测井解释最高油气柱超过60m。东河砂岩段是塔里木盆地下古生界在经历海西早期运动构造变形,长期遭受剥蚀、夷平之后,晚泥盆世海侵形成的海岸陆屑超复沉积。
本文主要采用薄片、岩芯、测井等资料,对塔河油田西南部东河塘组沉积相和储层特征进行了较为详细的研究,研究结果表明:
1.塔河油田西南部上泥盆统东河塘组属滨岸沉积体系,存在前滨、后滨、临滨等6种微相。
2.通过单井的沉积微相划分和联井剖面的对比发现,以临滨、前滨为主要类型的砂体在空间展布上较稳定,应加强对这些部位的进一步勘探。
3.从厚度上看,东河塘组储层非常发育,西北砂体厚度大,向东南变薄,储层中主要发育粒间孔,有较好的孔渗条件,为Ⅱ类较好的储集岩。
4.用Kridge法作了该区东河塘组储层厚度分布等值线图,为评估储层的厚度分布提供了定量数据,从而确定出研究区西部和西北部有较好的勘探前景。
总之,塔河地区叠加在奥陶系油气藏之上的上泥盆统东河砂岩段具有良好的勘探前景,既是塔河油田外围新的勘探评价层系,也是塔河油田新的油气勘探领域,为扩大油气勘探成果,增储上产,寻找塔河地区新的后备基地具有重要的现实意义。
Donghe Sands, a sands body within Donghetang Formation of Later Devonian, had been discovered in several wells in southwestern Tahe Oilfield since 2000, it was mainly composed of light-gray quartzose and lithic quartzose sandstones, the interpreted column filled hydrocarbon was over 60 m with the evidence of wireline-log data, and hydrocarbon indications occur frequently in the drilling. It was overlain an unconformity which was resulting from long period erosion of the uplifted Northern Tarim basin due to the Early Hercynian orogeny during the time of transgression in Later Devonian.
By use of the data of thin section and core, we make a detailed study about sedimentary facies and reservoir characters. The results show that:
1. 6 microfacies including foreshore, backshore, shoreface and a beach sedimentary system have been identified from the Upper Devonian of the southwest of Tahe oilfield.
2. microfacies of single well and contrast of microfacies of adjacent wells have been ascertained, we find that the sand body mainly with foreshore and shoreface is comparably stable in space, so we should attach great importance to the exploitation in these region.
3. Judging from the thickness, the reservoir is developed,Northwest sand thick and thin to the southeast, the reservoir has development intergranular pore, has a good porosity and permeability conditions for better reservoir of ClassⅡrock.
4.By use of the method of Kridge, we make a forecast of thickness and distributing of the reservoir. It provide quantificational data to evaluate the thickness of reservoir, and it shows that the west and southwest of the research region have better interests for exploitation.
In all,the Donghe Sands overlain the oil pools of Ordovician have a good prospection for oil exploration, and it can to be the new domain and succession for expanding of Tahe Oil Field.
本文主要采用薄片、岩芯、测井等资料,对塔河油田西南部东河塘组沉积相和储层特征进行了较为详细的研究,研究结果表明:
1.塔河油田西南部上泥盆统东河塘组属滨岸沉积体系,存在前滨、后滨、临滨等6种微相。
2.通过单井的沉积微相划分和联井剖面的对比发现,以临滨、前滨为主要类型的砂体在空间展布上较稳定,应加强对这些部位的进一步勘探。
3.从厚度上看,东河塘组储层非常发育,西北砂体厚度大,向东南变薄,储层中主要发育粒间孔,有较好的孔渗条件,为Ⅱ类较好的储集岩。
4.用Kridge法作了该区东河塘组储层厚度分布等值线图,为评估储层的厚度分布提供了定量数据,从而确定出研究区西部和西北部有较好的勘探前景。
总之,塔河地区叠加在奥陶系油气藏之上的上泥盆统东河砂岩段具有良好的勘探前景,既是塔河油田外围新的勘探评价层系,也是塔河油田新的油气勘探领域,为扩大油气勘探成果,增储上产,寻找塔河地区新的后备基地具有重要的现实意义。
Donghe Sands, a sands body within Donghetang Formation of Later Devonian, had been discovered in several wells in southwestern Tahe Oilfield since 2000, it was mainly composed of light-gray quartzose and lithic quartzose sandstones, the interpreted column filled hydrocarbon was over 60 m with the evidence of wireline-log data, and hydrocarbon indications occur frequently in the drilling. It was overlain an unconformity which was resulting from long period erosion of the uplifted Northern Tarim basin due to the Early Hercynian orogeny during the time of transgression in Later Devonian.
By use of the data of thin section and core, we make a detailed study about sedimentary facies and reservoir characters. The results show that:
1. 6 microfacies including foreshore, backshore, shoreface and a beach sedimentary system have been identified from the Upper Devonian of the southwest of Tahe oilfield.
2. microfacies of single well and contrast of microfacies of adjacent wells have been ascertained, we find that the sand body mainly with foreshore and shoreface is comparably stable in space, so we should attach great importance to the exploitation in these region.
3. Judging from the thickness, the reservoir is developed,Northwest sand thick and thin to the southeast, the reservoir has development intergranular pore, has a good porosity and permeability conditions for better reservoir of ClassⅡrock.
4.By use of the method of Kridge, we make a forecast of thickness and distributing of the reservoir. It provide quantificational data to evaluate the thickness of reservoir, and it shows that the west and southwest of the research region have better interests for exploitation.
In all,the Donghe Sands overlain the oil pools of Ordovician have a good prospection for oil exploration, and it can to be the new domain and succession for expanding of Tahe Oil Field.
引文
【1】孙永传、李蕙生,碎屑岩沉积相和沉积环境,北京,地质出版社,1986.12
【2】赵澄林,沉积学原理,北京,石油工业出版社,2001.1
【3】曾允孚、夏文杰,沉积岩石学,北京,地质出版社,1986.6
【4】姜在兴,沉积学,北京,石油工业出版社,2003.5
【5】王允诚,油层物理学,北京,石油工业出版社,1993.11
【6】王允诚,油气储层评价,北京,石油工业出版社,1999.12
【7】袁琪,准噶尔盆地彩南-沙丘河地区侏罗系沉积相和储层特征研究,成都理工学院硕士研究生学位论文,1996.5
【8】樊怀阳,新疆塔里木盆地塔河地区东河塘组地层储集特征研究,成都理工学院硕士研究生学位论文,2004.5
【9】夏文杰编译,双众数砂和砂岩,成都理工大学,1986
【10】王允诚等,鄂尔多斯盆地苏里格气田上古气藏砂体展布规律研究,成都理工大学,2002.6
【11】李永宏,闫相宾等,塔河油田石炭系卡拉沙依组储层特征及其控制因素,石油实验地质,2004.2
【12】樊怀阳等,塔河油田卡拉沙依组砂组沉积相与储层研究,新疆地质,2004.12
【13】顾忆、罗宏等,塔里木盆地北部油气成因与保存,北京,地质出版社,1998
【14】张厚福,石油地质学新进展,北京,石油工业出版社,1998
【15】周棣康等,疆塔里木盆地沉积特征与储集条件研究(85-101-02-02),1995.6
【16】陈立官,油气田地下地质学,北京,地质出版社,1985
【17】朱如凯等,塔里木盆地晚泥盆世及石炭纪岩相古地理,古地理学报,2002.2
【18】韩保清等,塔中地区东河塘组沉积微相分析,江汉石油学院学报,2003.12
【19】王招明、田军等,塔里木盆地晚泥盆世-早石炭世东河塘组地层沉积相,古地理学报,2004.8
【20】杨威等,塔中40油田东河塘组地层储层特征及其控制因素,新疆地质,2003.12
【21】顾家裕、张兴阳,油气沉积学发展回顾和应用现状,沉积学报,2003.3
【22】刘家铎、张哨楠、田景春,塔里木盆地志留-泥盆系沉积体系及储层评价研究(XBKT2002KY-05040),2004.4
【23】朱筱敏等,塔里木盆地志留系沉积体系及分布特征,石油大学学报(自然科学版),2002.6
【24】Weimer P. Sequence stratigraphy, facies geometries and depositional history of the Mississippi Fan, Gulf of Mexico. AAPG Bull, 1990, 74: 425~453
【25】Johnson J H, Klapper G, Sandberg C A. Devonian eustatic fluctuations in Euramerica. Geological Society of America Bulletin, 1985, 96(5): 567~587
【26】Johnson J H, Klapper G. North American Midcontinent Devonian T-R cycles. Oklahoma Geological Survey Bulletin, 1992, 145: 127~135
【27】Ravnas R, Steel R J. Architecture of marine rift-basin successions. AAPG Bulletin, 1998, 82(1): 110~146
【28】Hans E, Mandana H, Woligang S. Tectonic and climatic control of Paleogene sedimentation in Rhenodanubian Flysch basin (Eastern Alps, Austria). Basin Research, 2002, 14(7): 247~262
【29】Bryan D, Jason J. Tectonostratigraphy of the Nieuwerkerk Formation (Delfland subgroup), West Netherlands Basin. AAPG Bulletin, 2002, 86(10): 1679~1709
【30】P.A. Bjφrkum, E.H.Oelkers, P.H.Nadeau,O.Walderhaug and W.M.Murphy 1998 Porosity Prediction in Quatzose Sandstone as a Founction of Time, Temperature, Depth, Stylolite Frequency, and Hydrocarbon Saturation AAPG Bulletin V.82 No.4 P.637-648
【31】M.wilkinson, D.Darby, R.S.Haszeldine, and G.D.Couples 1997 Secondary Porosity Generation During Deep Burial Associatied with Overpressure Leak-off:Furmar Formation, United Kingdom Central Graben AAPG Bulletin V.81 No.5 P.803-813
【32】J.E.Amthor and J.Okkerman 1998 Influence of Early Diagenesis on Reservoir Quality of Rotliegende Sandstone, Northern Netherland AAPG Bulletin V.82 No.12 P.2246-2265
【2】赵澄林,沉积学原理,北京,石油工业出版社,2001.1
【3】曾允孚、夏文杰,沉积岩石学,北京,地质出版社,1986.6
【4】姜在兴,沉积学,北京,石油工业出版社,2003.5
【5】王允诚,油层物理学,北京,石油工业出版社,1993.11
【6】王允诚,油气储层评价,北京,石油工业出版社,1999.12
【7】袁琪,准噶尔盆地彩南-沙丘河地区侏罗系沉积相和储层特征研究,成都理工学院硕士研究生学位论文,1996.5
【8】樊怀阳,新疆塔里木盆地塔河地区东河塘组地层储集特征研究,成都理工学院硕士研究生学位论文,2004.5
【9】夏文杰编译,双众数砂和砂岩,成都理工大学,1986
【10】王允诚等,鄂尔多斯盆地苏里格气田上古气藏砂体展布规律研究,成都理工大学,2002.6
【11】李永宏,闫相宾等,塔河油田石炭系卡拉沙依组储层特征及其控制因素,石油实验地质,2004.2
【12】樊怀阳等,塔河油田卡拉沙依组砂组沉积相与储层研究,新疆地质,2004.12
【13】顾忆、罗宏等,塔里木盆地北部油气成因与保存,北京,地质出版社,1998
【14】张厚福,石油地质学新进展,北京,石油工业出版社,1998
【15】周棣康等,疆塔里木盆地沉积特征与储集条件研究(85-101-02-02),1995.6
【16】陈立官,油气田地下地质学,北京,地质出版社,1985
【17】朱如凯等,塔里木盆地晚泥盆世及石炭纪岩相古地理,古地理学报,2002.2
【18】韩保清等,塔中地区东河塘组沉积微相分析,江汉石油学院学报,2003.12
【19】王招明、田军等,塔里木盆地晚泥盆世-早石炭世东河塘组地层沉积相,古地理学报,2004.8
【20】杨威等,塔中40油田东河塘组地层储层特征及其控制因素,新疆地质,2003.12
【21】顾家裕、张兴阳,油气沉积学发展回顾和应用现状,沉积学报,2003.3
【22】刘家铎、张哨楠、田景春,塔里木盆地志留-泥盆系沉积体系及储层评价研究(XBKT2002KY-05040),2004.4
【23】朱筱敏等,塔里木盆地志留系沉积体系及分布特征,石油大学学报(自然科学版),2002.6
【24】Weimer P. Sequence stratigraphy, facies geometries and depositional history of the Mississippi Fan, Gulf of Mexico. AAPG Bull, 1990, 74: 425~453
【25】Johnson J H, Klapper G, Sandberg C A. Devonian eustatic fluctuations in Euramerica. Geological Society of America Bulletin, 1985, 96(5): 567~587
【26】Johnson J H, Klapper G. North American Midcontinent Devonian T-R cycles. Oklahoma Geological Survey Bulletin, 1992, 145: 127~135
【27】Ravnas R, Steel R J. Architecture of marine rift-basin successions. AAPG Bulletin, 1998, 82(1): 110~146
【28】Hans E, Mandana H, Woligang S. Tectonic and climatic control of Paleogene sedimentation in Rhenodanubian Flysch basin (Eastern Alps, Austria). Basin Research, 2002, 14(7): 247~262
【29】Bryan D, Jason J. Tectonostratigraphy of the Nieuwerkerk Formation (Delfland subgroup), West Netherlands Basin. AAPG Bulletin, 2002, 86(10): 1679~1709
【30】P.A. Bjφrkum, E.H.Oelkers, P.H.Nadeau,O.Walderhaug and W.M.Murphy 1998 Porosity Prediction in Quatzose Sandstone as a Founction of Time, Temperature, Depth, Stylolite Frequency, and Hydrocarbon Saturation AAPG Bulletin V.82 No.4 P.637-648
【31】M.wilkinson, D.Darby, R.S.Haszeldine, and G.D.Couples 1997 Secondary Porosity Generation During Deep Burial Associatied with Overpressure Leak-off:Furmar Formation, United Kingdom Central Graben AAPG Bulletin V.81 No.5 P.803-813
【32】J.E.Amthor and J.Okkerman 1998 Influence of Early Diagenesis on Reservoir Quality of Rotliegende Sandstone, Northern Netherland AAPG Bulletin V.82 No.12 P.2246-2265