用户名: 密码: 验证码:
鄂尔多斯盆地姬塬地区长2油层组储层发育的沉积成岩机制
详细信息    本馆镜像全文|  推荐本文 |  |   获取CNKI官网全文
摘要
鄂尔多斯盆地中生界上三叠统延长组是一套以大型内陆盆地为背景、以河流
    和湖泊相为主的陆源碎屑沉积。根据岩性、电性和古生物特征,延长组划分为五
    段、10个油层组。
     通过对姬塬地区长2油层组大量的岩心观察,取得了丰富的沉积构造和岩性
    信息,结合测井曲线分析研究,并对收集到的大量薄片鉴定资料、重矿物资料、
    物性资料进行统计分析,同时对长2(包括小层)地层厚度特征进行研究,我们
    有如下认识:
     姬塬地区长2油层组主要发育平原网状河(网结河)沉积。在长2~3到长2~1
    的时间段中,砂地比向上降低、砂岩向上变细,河床逐渐变缓、古陆逐渐夷平、
    沉积物供给逐渐减少,砂体逐渐萎缩,到长2末期,除少数地区以外,研究区已
    几乎完全沦为网状河沼泽湿地系统。在长2的主要时间段中,姬塬地区主要受北
    东物源控制,但在长2~2后期和2~1的时间段中,显示出北部偏西物源的掺合作用。
     碳酸盐胶结物对储层的影响主要是负面的,高岭石、绿泥石和硅质胶结物都
    可以从不同的角度对埋藏条件下孔隙的保存起到一定的积极的作用。从成岩作用
    角度来说,姬塬地区长2油层组储层砂岩孔隙保存与发育的主要机制包括:a)
    早期分散的胶结作用,主要是石英的胶结作用;b)粘土矿物的早期孔隙衬里,
    主要是绿泥石的孔隙衬里;c)大气淡水的溶解作用,主要是印支期曝露时间间
    隔中的大气淡水溶解作用。
     印支期曝露时间间隔中大气淡水的溶解作用是姬塬地区长2油层组储层砂
    岩最为重要的成岩作用,不整合面附近砂岩次生孔隙显著增加。与全盆地相比,
    姬塬地区长2油层组具有显著较低的粒间孔隙含量和显著较高的次生孔隙含量,
    储层对成岩作用和次生孔隙的依赖较大。下部小层具有比上部小层更为有利的形
    成粒间孔隙的沉积条件,而上部小层则具有比下部小层更为有利的形成次生孔隙
    的成岩条件。姬塬地区长2油层组大致属于Ⅱa类,即中等质量储层类型中的中
    上等亚类;下部小层的储层质量略好于上部小层。
     本论文还利用剥蚀厚度求解新模型对三叠纪末期剥蚀厚度及剥蚀古地貌进
    行了恢复、解释。
     最后,根据各小层沉积相和砂体的分布特征以及成岩作用的研究成果,同时
    考虑三叠纪末期剥蚀厚度的大小、古河道古沟谷的发育、长2高岭石分布等特点,
    并依照优先考虑上部油层组砂体的原则,兼顾与有利生油岩分布区的关系和构造
    部位,参考物性状况,我们建议了6个区块,作为供参考的有利评价区块。
The Yan-Chang formation of Upper Triassic in Ordos basin is mostly detritus sediments derived from rivers and lakes sedimentary environment on setting of inland basin. It is divided into 10 subformations containing oil and gas by its lithologic, electric, and paleontological characters.
    We have obtained abundance of information about its sedimentary structure and lithologic characters by observing bore cores of Chang2 subformation, and combining with the information from well-log curves, and a great deal of thin section observation, heavy mineral analysis, porosity and permeability data, stratum thickness, et al. In the end, we get following achievements:
    The sedimentary facies of Chang2 subformation in JiYuan district are reticulation fluvial. During the time from Chang2~3- Chang2~1, the ratio for thickness of sand bodies to thickness of stratum decreased, with fine granularity, gentle grade of riverbed, and shrinking sandbodies. The environment of JiYuan district had evolutated into marsh in the terminal of Chang2 subformation. At the most time of Chang2 subformation, the material province of JiYuan district is mainly located in northeast to some degree.
    The carbonate cementation is mostly negative to development of reservoir, however, kaolinite, chlorite and silica cementation are favored to preservation of reservoir space from many aspects. The mechanism for conservation and evolvement of pore of Chang2 from diagenesis are as following: a) early quartz cementation during diagenesis; b) lining of chlorite in pores in early period; c) dissolution of feldspar by freshwater during the Indosinian period, which is the most important diagenetic mechanism in Chang2 subformation in our target area. Moreover, the secondary pores increased violently near surface of unconformity.
    The intergranular pores are very low, whereas the secondary pores are very high in JiYuan district compared with the entire basin. During the whole diagenetic stage, the role of the secondary pores are very important for the improvement of reservoir quality.
    The intergranular relatively pores prevailed in the lower part of Chang2 subformation than the upper part, on the contrary, the upper part contained more sencondary pores than the lower part of Chang2 subformation. the reason leading to
引文
Al-Shaieb Z, Shelton J W. Migration of hydrocarbons and secondary porosity in sandstones: AAPG Bulletin, 1981, 65: 2433~2436.
    Baker J C, Havord P J, Martin K R, et al. Diagenesis and petrophysics of the Early Permian Moogooloo Sandstone, southern Carnarvon Basin, Western Australia [J ]. AAPG Bulletin, 2000, 84: 250~ 265.
    Beard D C, Weyl P K. Influence of texture on porosity and permeability of unconsolidated sand. American Association of Petroleum Geologists, Tulsa, OK, United states, 1973, 57: 349~369.
    Bethke C M S, Marshak. Brine migrations across North America; the plate tectonics of groundwater: Annual Review of Earth and Planetary Sciences, 1990, 18: 287~315.
    Bjorlykke K, Nedkvitne T, Ramm M, Saigal G C. Diagenetic processes in the Brent Group (Middle Jurassic) reservoirs of the North Sea; an overview: Geological Society Special Publications. 1992, 61: 263~287.
    Bjorlykke K, Aagaard P, Egeberg P K et al. Geochemical constraints from formation water analyses from the North Sea and the Gulf Coast Basin on quartz, feldspar and illiteprecipitation in reservoir rocks [A ]. In: Cubitt J M, England W A, eds. The Geochemistry of Reservoirs [C ].Geological Society Special Publication,, 1994, 86,33~50.
    Bloch S, Franks S G Preservation of shallow plagioclase dissolution porosity during burial; implications for porosity prediction and aluminum mass balance: AAPG Bulletin, 1993, 77: 1488~1501.
    Bloch S. Secondary porosity in sandstones: Significance, origin, relationship to subaerial unconformities, and effect on predrill reservoir quality prediction, in M. D. Wilson, ed., Reservoir Quality assessment and prediction in clastics rocks: SEPM short Course. 1994, 30: 136~159.
    D'Agostino A. Petrography, reservoir qualities, and depositional setting of the How ell sand, deep upper Wilcox, east Seven Sisters field, Dural County,Texas: Gulf Coast Section [ J ].Society for Sedimentary Geology Foundation Fourth Annual Research Conference Proceedings, 1985, 243~ 262.
    Deming D,Sass J H, Lachenbruch A H, De-Rito R F. Heat flow and subsurface temperature as evidence for basin-scale ground-water flow, North Slope of Alaska: Geological Society of America Bulletin. 1992 .104: 528~542.
    Dixon S A , Summers D M , Surdam R C. Diagenesis and preservation of porosity in Norph let Formation (Upper Jurassic), southern Alabama [ J ]. AAPG Bulletin, 1989, 73: 707~ 728.
    Dutton S P. Diagenesis and porosity distribution in deltaic sandstone, Strawn series (Pennsylvanian), north2 central Texas: Gulf Coast [J ]. Association of Geological Societies Transactions, 1977, 27: 272~277.
    Edmunds W M, Bath A H, Miles D L. Hydrochemical evolution of the East Midlands Triassic sandstone aquifer, England: Geochimica et Cosmochimica Acta, 1982, 46: 2069~2082.
    Ehrenberg S N. Kaolinized, potassium-leached zones at the contacts of the Garn Formation, Haltenbanken, mid-Norwegian continental shelf: Marine and Petroleum Geology, 1991, 8: 250~269.
    Ehrenberg S N. Preservation of anomalously high porosity in deeply buried sandstones by grain-coating chlorite: Examples from the Norwegian Continental Shelf. AAPG Bulletin, 1993,77:1260~1286.
    Emery D, Myers K J, Young R. Subaerial exposure and freshwater leaching in sandstones. Geology, 1990,18:1178~1181.
    Franks S G, Forester R W. Relationships among secondary porosity, pore-fluid chemistry and carbon dioxide, Texas Gulf Coast: AAPG Memoir, 1984, 37: 63~79.
    
    Galloway W E. Hydrogeologic regimes of sandstone diagenesis: AAPG Memoir, 1984..37: 3~13.
    Giles M R. Mass transfer and problems of secondary porosity creation in deeply buried hydrocarbon reservoirs: Marine and Petroleum Geology, 1987, 4: 188~204.
    Giles M R, Marshall J D. Constraints on the development of secondary porosity in the subsurface; re-evaluation of processes: Marine and Petroleum Geology, 1986 3: 243~255.
    Giles M R, de Boer R B. Secondary porosity, creation of enhanced porosities in the subsurface from the dissolution of carbonate cements as a result of cooling formation waters [J]. Marine and Petroleum Geology, 1989, 6: 261~269.
    Guidish T M, et al. Basin evaluation using burial history calcuations: an overview[J]. AAPG Bull, 1985, 69(1): 92~1051.
    Hancock N J. Possible causes of Rotliegend sandstone diagenesis in northern West Germany[J ]. Journal of the Geological Society of London, 1978, 135: 35~40.
    Hayes M J, Boles J R. Volumetric relations between dissolved plagioclase and kaolinite in sandstones; implications for aluminum mass transfer in the San Joaquin Basin, California: Special Publication. Society of Economic Paleontologists and Mineralogists, 1992, 47: 111 ~123.
    Heald M T, Anderegg R C. Differential cementation in the Tuscarora sandstone [ J ]. Journal of Sedimentary Petrology, 1960, 30: 568~ 577.
    Heald M T, Larese R E. Influence of coatings on quartz cementation [ J ]. Journal of SedimentaryPetrology, 1974, 44: 1269~ 1274.
    Houseknecht D W, Hathon L A. Relationships among thermalmaturity, sandstone diagenesis, and reservoir quality in Pennsylvanian strata of the Arkoma basin [J]. AAPG Bulletin, 1987, 71: 568~569.
    Howseknecht D W. Assessing the relative importance of compaction processes and cementation to reduction of porosity in sandstones [J ]. AAPG Bull, 1987, 71 (6): 633~642.
    Hutcheon I, Abercrombie H J. Carbon dioxide in clastic rocks and silicate hydrolysis: Geology (Boulder), 1990, 18:.541~544.
    Hutcheon I, Abercrombie H J. Fluid rock interactions in thermal recovery of bitumen, Tucker Lake pilot, Cold Lake, Alberta [A ]. AAPG Memoir, 1990, 49:161~170.
    Keller W D.Kaolinization of feldspar as displayed in scanning electron micrographs: Geology (Boulder). 1978,6:184~188.
    Lundegard P D, Land L S, Galloway W E. Problem of secondary porosity; Frio Formation (Oligocene), Texas Gulf Coast: Geology (Boulder), 1984,12: 399~402.
    Lundegard, P D, Land L S. Carbon dioxide and organic acids; their role in porosity enhancement and cementation, Paleogene of the Texas Gulf Coast: Special Publication - Society of Economic Paleontologists and Mineralogists, 1986, 38: 129~146.
    MacGowan D B, Surdam R C. Difunctional carboxylic acid anions in oilfield waters: Organic Geochemistry, 1988,12:245~259.
    Magara K. .Thickness of removed sediments, paleoporepressure, and paleotemperature, southwestern part of Western Canada Basin[J]. Bull. Am. Assoc. Pet, Geol, 1976, (60): 554~5651.
    
    Mailj A D.1987,河流相模式研究的新进展.张昌民,温道明,曹大乾等译,解习农,沈锡昌校,地质科学泽丛,1989(2):85~91.
    Nedkvitne T K, Bjorlykke. Secondary porosity in the Brent Group (Middle Jurassic), Huldra Field, North Sea; implication for predicting lateral continuity of sandstones: Journal of Sedimentary Petrology, 1992, 62: 23~34.
    Passaretti M L, Eslinger V E. Dissolution and relic textures in framework grains of Holocene sediments from the Brazos River and Gulf Coast of Texas: Journal of Sedimentary Petrology, 1987, 57: 94~97.
    Pittman E D, Lumsden D N. Relationship between chlorite coatings on quartz grains and porosity, Spiro Sand, Ok lahoma [J]. Journal of Sedimentary Petrology, 1968, 38: 668~670.
    Plummer L N. Defining reactions and mass transfer in part of the Floridan Aquifer: Water Resources Research, 1977, 13: 801~812.
    Ramm M. Porosity-depth trends in reservoir sandstones; theoretical models related to Jurassic sandstones offshore Norway: Marine and Petroleum Geology, 1992, 9: 553~567.
    Schmidt V, McDonald D A. Texture and recognition of secondary porosity in sandstones: Special Publication-Society of Economic Paleontologists and Mineralogists, 1979, 26: 209~225.
    Schmidt V, McDonald D A. The role of secondary porosity in the course of sandstone diagenesis: Special Publication-Society of Economic Paleontologists and Mineralogists, 1979, 26: 175~207.
    Smith J T, Ehrenberg S N. Correlation of carbon dioxide abundance with temperature in clastic hydrocarbon reservoirs; relationship to inorganic chemical equilibrium: Marine and Petroleum Geology, 1989, 6: 129~135.
    Surdam R C, Boese S W, Crossey L J. The chemistry of secondary porosity: AAPG Memoir, 1984, 37: 127~149.
    Surdam R C, Crossey L J. Integrated diagenetic modeling; a process-oriented approach for clastic systems: Annual Review of Earth and Planetary Sciences, 1987, 15: 141~170.
    Surdam R C, Crossey L J, Lahamn R. Mineral oxidants and porosity enhancement: AAPG Bulletin, 1984, 68: 532.
    Surdem R C, Crossey L J, Hagen E S, Heasler H P. Organic inorganic interactions and sandstone diagenesis. AAPG Bulletin, 1989, 73: 17~23.
    Taylor T T. The influence of calcite dissolution of reservoir porosity in Miocene Sandstones, Picaroon Field, offshore Texas Gulf Coast[J]. Journal of Sedimentary Petrology, 1990,60:322~334.
    Thomson A. Preservation of porosity in the deep Woodbineo/Tuscaloosa trend, Louisiana: Gulf Coast [J]. Association of Geological Societies Transactions, 1979, 30: 396~403.
    Tillman R W, Almon W R. Diagenesis of the Frontier Formation offshore bar sandstones, Spearhead Ranch field, W yom ing[J]. SEPM Special Publication, 1979, 26: 337~378.
    Wescott W A. Diagenesis of Cotton Valley sandstone (Upper Triassic), east Texas: implications for tight gas formation pay recognition [J]. AAPG Bulletin, 1983, 67: 1002~1013.
    Winn R D, Stonecipher S A, Bishop M G. Depositional environments and deposition of offshore sand ridges, Frontier Formation, Spearhead Ranch field, W yom ing[J]. Mountain Geologist, 1983, 20: 41~58.
    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):60~65.
    长庆油田石油地质志编写组,中国石油地质志(卷12)—长庆油田[M].北京:石油工业出版社,1992.初福君.长庆油田:未来的又一能源中心.中国石油,2001,6~8.
    第广龙.长庆奇迹是这样创造的.中国石化,2003,60~61.
    冯增昭.沉积岩石学(下册)[M].北京:石油工业出版社,1993.
    黄思静,等.丽水凹陷储层特征及有利分布区预测研究.成都理工大学,中国石油(中国)有限公司,内部资料,2005.
    黄思静,张萌,谢连文,等.中国三叠系陆相砂岩中自生绿泥石的形成机制及其与储层孔隙保存的关系[J].成都理工大学学报(自然科学版),2004,31(3):273~281.
    黄思静,石和,林金辉,等.鄂尔多斯盆地中南部延长组主要油层组有利储集体特征及展布研究.成都理工大学,长庆油田公司勘探开发研究院,内部资料,2001.
    黄思静,侯中建.地下孔隙度和渗透率在时间和空间上的变化及影响因素[J].沉积学报,2001,19(2):224~232.
    黄思静,杨俊杰,张文正,等.不同温度条件下乙酸对长石溶蚀过程的实验研究[J].沉积学报,1995,13(1):7~17.
    黄思静,张萌,朱世全,等.砂岩孔隙成因对孔隙度/渗透率关系的控制作用—以鄂尔多斯盆地陇东地区三叠系延长组为例[J].成都理工大学学报(自然科学版),2004,31(6):648~653.
    黄思静,武文慧,刘洁,等.大气水在碎屑岩次生孔隙形成中的作用—以鄂尔多斯盆地三叠系延长组为例[J].地球科学—中国地质大学学报,2003,28(4):419~424.
    雷振宇,张朝军,杨晓萍.鄂尔多斯盆地含油气系统划分及特征[J].勘探家,2000,5(3):75~82.
    兰大樵,邱宗恬.川西坳陷平地落坝气田须二段气藏成藏研究[J].石油勘探与开发,2002,29(3):8~11.
    李德生.重新认识鄂尔多斯盆地油气地质学[J].石油勘探与开发,2004,31(6):1~7。
    李德生.陕西延长油田浅油层的储油和出油条件[A].李德生石油地质论文集[C],北京:石油工业出版社,1992.
    李克勤.鄂尔多斯盆地大地构造对油气的控制作用[A].中国含油气盆地构造学[C].北京:石油工业出版社,2002.
    李忠,寿建峰,王生朗.东濮凹陷砂岩储层成岩作用及其对高压致密气藏的制约[J].地质科学,2000,35(1):96~104.
    罗静兰,S.Morad,阎世可,等.河流—湖泊三角洲相砂岩成岩作用的重建及其对储层物性演化的影响—以延长油区侏罗系-上三叠统砂岩为例[J].中国科学(D辑),2001,31(12):1006~1015.
    罗静兰,张成立,阎世可,等.盆地埋藏史及其对砂岩储集层物性演化的影响—以陕北延长油区砂岩储层为例[J].石油与天然气地质,2001,22(2):123~136.聂永生,田景春,夏青松,等.鄂尔多斯盆地白豹—姬塬地区上三叠统延长组物源分析[J].油气地质与采收率,2004,11(5):4~6.
    蔺宏斌,姚泾利.鄂尔多斯盆地南部延长组沉积特征与物源探讨[J].西安石油学院学报(自然科学版),2000,15(5):7~9.
    柳益群,李文厚.陕甘宁盆地上三叠统含油长石砂岩的成岩特点及孔隙演化[J].沉积学报,1996,14(3):87~96.
    吕正祥,卿淳.川西新场气田上沙溪庙组储层渗透性的地质影响因素[J].沉积与特提斯地质,2001,21(2):57~63.
    李文厚,张小莉,刘生福,等.鄂尔多斯盆地南部延长组主要油层组沉积相研究.西北大学地质系,长庆石油勘探开发研究院,内部资料,1999.
    廖保方,张为民,李列,等.辫状河现代沉积研究与相模式——中国永定河剖析[J].沉积学报,1998,16(1):34~392.
    刘宝瑶.沉积岩石学[M].北京:地质出版社,1980。
    刘林玉,曲志浩,孙卫,等.新疆鄯善油田碎屑岩中的粘土矿物特征[J].西北大学学报(自然科学版),1998,28(5):443~446.
    马立祥.利用砂岩孔隙度演化趋势估计古地层剥蚀量的简易方法[J].石油实验地质,1991,13(1):53~551.
    马启富.超压盆地与油气分布[M].北京:地质出版社,2000.
    毛凤鸣,侯建国.盐城凹陷朱家墩地区天然气储层特征[J].西安石油学院学报(自然科学版),2001,16(1):8~15.
    牟中海,唐勇,崔炳富,等.塔西南地区地层剥蚀厚度恢复研究[J].石油学报,2002,23(1):40~44.
    裘怿南,刘雨芬,等.低渗透砂岩油藏开发模式[M].北京:石油工业出版社,1998.
    任战利.鄂尔多斯盆地热演化史与油气关系的研究[J].石油学报,1996,17(1):17~23.
    田景春,陈高武,窦伟坦,等.湖泊三角洲前缘砂体成因组合形式和分布规律—以鄂尔多斯盆地姬塬白豹地区三叠系延长组为例[J].成都理工大学学报(自然科学版),2004,31(6):636~640.
    王峰,王多云,高明书,等.陕甘宁盆地姬塬地区三叠系延长组三角洲前缘的微相组合及特征[J].沉积学报,2005,23(2):218~223.
    王琪,史基安,王多云,等.鄂尔多斯盆地西部三叠系长2油层组砂岩成岩演化特征[J].天然气地球科学,2005,16(3):261~268.
    王琪,禚喜准,陈国俊,等.鄂尔多斯盆地盐池—姬源地区三叠系长4+5砂岩成岩演化特征与优质储层分布[J].沉积学报,2005,23(3):397~405.
    王允诚.油气储层评价[M].北京:石油工业出版社,1999.
    吴素娟,黄思静,孙治雷,等.鄂尔多斯盆地三叠系延长组砂岩中的白云石胶结物及形成机??制[J].成都理工大学学报(自然科学版),2005,32(6):569~575.
    武文慧,黄思静.超压盆地中碎屑岩储集层的矿物岩石学特征[J].成都理工大学学报(自然科学版),2003,30(3):258~262.
    谢庆邦,李克勤,王喜娥等.陕甘宁盆地南部上三叠统延长组低渗砂岩储层评价.长庆石油勘探局,内部资料,1988.
    谢庆邦,黄思静,杨承运.陕甘宁盆地中部气田奥陶系风化壳碳酸盐岩储层特征研究[J].天然气工业,1994,14(增刊):13~18.
    杨俊杰.鄂尔多斯盆地构造演化与油气分布规律[M].北京:石油工业出版社,2002.
    杨小萍,陈丽华.陕北斜坡延长组低渗储集层成岩相研究[J].石油勘探与开发,2001,28(4):38~40.
    杨永彪,王振.牛居油田牛12断块东营组储层特征[J].西安石油学院学报,1996,11(4):11~16.
    应凤祥,等.中国碎屑岩储层图集[M].北京:石油工业出版社,1994.
    真柄钦次.压实与流体运移[M].陈荷立等,译.北京:石油工业出版社,1981.
    曾伟.张强凹陷上侏罗统成岩作用及储层分布[J].西南石油学院学报,1996,18(4):9~15.
    曾允孚,夏文杰.沉积岩石学[M].北京:地质出版社,1985.
    张文昭.鄂尔多斯盆地油气勘探的重大突破—马岭、安塞大油田、中部大气田发现的回顾[J].中国矿业,1999,8(3):5~8.
    赵俊兴,陈洪德,时志强.古地貌恢复技术方法及其研究意义—以鄂尔多斯盆地侏罗纪沉积前古地貌研究为例[J].成都理工学院学报,2001,28(3):260~265.
    钟广法,林社卿,侯方浩.泌阳凹陷核三下亚段砂岩成岩作用及储集性[J].矿物岩石,1996,16(2):40~46.
    朱明恭,郝宇.陕北东部油田地质规律[A].中国含油气盆地构造学[C],北京:石油工业出版社,2002.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700