用户名: 密码: 验证码:
苏里格地区盒8段低渗储层特征及其成因
详细信息    本馆镜像全文|  推荐本文 |  |   获取CNKI官网全文
摘要
论文应用现代沉积学、储层地质学和地球化学等理论,对苏里格地区上古生界盒8储层成岩作用及微观孔隙结构特征进行研究,探讨沉积环境、成岩作用等因素对储层发育和储集性能的控制,力图在低孔低渗储层背景下寻找上古生界高效储层,取得以下成果:
     1、通过进行沉积相和层序地层研究,得出苏里格地区盒8段优质储层主要发育在水上辫状河道和水下分流河道微相中,并且砂体在平面的展布和垂向上的演化受沉积相和基准面旋回的双重控制。
     2、通过储层特征研究表明盒8储层为一套距物源较近的辫状河三角洲沉积,储层以低成熟度、低结构成熟度为其显著特征,表现为岩屑含量高、颗粒分选中等-差、颗粒棱角状等结构特征。岩石胶结物主要为自生粘土矿物和硅质胶结,局部地区有铁方解石、凝灰质和绿泥石膜等胶结物。
     3、研究区储层经历的成岩作用主要有压实作用、胶结作用、溶蚀作用等,其成岩演化史经过三个阶段,目前处于中成岩B阶段。根据碎屑成分、成岩矿物组合、填隙物成分、成岩作用类型及孔隙演化等特征可以划分为4种成岩相和3种成岩相组合。并且通过自然伽玛、声波时差、密度及深浅侧向测井与成岩相的对应关系,建立相应的定量化测井识别模式。
     4、研究区盒8低孔低渗砂岩储层的形成既与沉积作用有关,也与成岩作用密切相关,其中成岩作用是盒8低渗透储层形成的主导因素。通过定量计算成岩作用强度参数,详细分析了成岩作用的定量特征及其对孔隙减小的效应,表明强压实和胶结作用是低孔低渗的关键因素,正是由于溶蚀作用在致密储层中出现相对高孔高渗区。
     5、对区内重点单井进行了储层综合评价,根据储层成因类型、成岩作用和储层物性等特征,将苏里格盒8储层划分为I,II,III类,并预测优质储层分布规律。苏里格盒8储层孔隙类型以次生溶孔为主,成岩作用研究表明溶蚀作用的发生与烃类注入有关,因此有利储层主要分布在毗邻生油凹陷或是油气运移指向与有利沉积相配合地区,即辫状河三角洲平原分流河道和辫状河三角洲前缘水下分流河道。
Under the guidance of the theories and technologies of Sedimentology, Reservoir Geology and Geochemistry, researches are carried out on several aspects such as diagenesis and micro-pore structure of He 8 Section reservoir in Sulige region. And then the controlling effects of sedimentary environment and diagenesis on reservoir distribution and reservoir physical property are explored. Based on the above researches, the rules of good reservoir distribution are settled up. The obtained main conclusions and views are as followed:
     1. According to the researches on sedimentary facies and sequence stratigraphy, the good reservoir distributes in favorable sedimentary microfacies such as braided channel and subaquatic braided channel. The combination factors of sedimentary facies and basal level cycles control the horizontal distribution and vertical evolution of the sandstone.
     2. The reservoir characteristics of He 8 Section in Sulige region suggest that its sedimentary facies is braided delta, which is near the sediment source. The reservoir lithology characteristics show low texture maturity and low compositional maturity, appearing as high debris content, middle-low particle classification, and angular particles. The cement types mainly are authigenic clay mineral and siliceous cement, sometimes ferrocalcite and tuffaceous cement and chlorite.
     3. The diagenesis types are compaction, cementation and denudation, with diagenesis history divided into three phases, and the diagenesis reaches middle diagenesis phase B period. According to clastic constituents, diagenesis mineral, interstitial matter and diagenesis type and pore evolution characteristics, He 8 Section of Sulige Region are divided into four diagenetic facies types and three types of diagenetic facies combination. With the analysis of the relationship between diagenetic facies and electrofacies, logging curves favorable for identifying diagenetic facies are summarized, which are SP, AC, DEN,combination of RLLS and RLLD. And their quantitative logging curves models are settled up.
     4. Both the sedimentation and diagenesis contribute to the forming of good reservoir, whereas diagenesis is the leading factor. Through the quantitative assessment of diagenetic intensity, the impacts of diagenesis on the reservoir physical property are analyzed thoroughly, reaching the result that intense compaction and cementation are the critical factors for low porosity and permeability, whereas denudation improves the physical property greatly.
     5. Based on the comprehensive reservoir evaluation of priority wells, in combination with the analysis of reservoir type, diagenesis and reservoir physical property, the He 8 reservoirs are divided into three types, that is type I, type II and type III. With the knowledge that the reservoir pore type mainly is secondary pore and its forming has close relationship with hydrocarbon injection, we draw the conclusion that the good reservoirs distribute in the favorable sedimentary facies, where is adjoined to oil source depression or is on the route of oil migration, such as braided channel and subaquatic braided channel.
引文
[1] Curtis C. D. Sedimentary geochemistry: environments and processes dominated by involvement of an aqueous phase. Philosophical Transactions of the Roal Society, London, 1977, A286, 352-373
    [2] Burley, S.D., Kantorowiez, J.D, Waugh, B. Clastic diagenesis. In: Sedimentology: Recent and Applied Aspects (Eds P. Brenchley & B.P.B. Williams). Spec. Pub1. Geol.Soc.London, 1985, No.18, 189-226. Blackwell Scientific Publications Oxford
    [3]黄勇.鄂尔多斯盆地苏里格气田上古气藏储层特征研究:[硕士学位论文].成都:成都理工大学,2003
    [4]刘成林,朱筱敏,曾庆猛.苏里格气田储层成岩序列与孔隙演化.天然气工业,2005,25(11):1-3
    [5]何东博.苏里格气田复杂储层控制因素和有效储层预测:[博士学位论文].北京:中国地质大学(北京),2005
    [6]吉海龙.鄂尔多斯苏里格地区上古生界储层沉积相与砂体分布研究:[硕士学位论文].北京:中国地质大学(北京),2007
    [7]王晓方.苏里格气田复上古生界优质储层成岩作用研究:[硕士学位论文].西安:西北大学,2005
    [8]刘锐娥,李文厚,拜文华,等.苏里格庙地区盒8段高渗储层成岩相研究.西北大学学报(自然科学版),2002,32(6):667-67
    [9]李仲东,过敏,李良,等.鄂尔多斯盆地北部塔巴庙地区上古生界低压力异常及其与产气性关系.矿物岩石,2006,26(4):48-53
    [10]陈瑞银,罗晓容,陈占坤,等.鄂尔多斯盆埋藏演化史恢复.石油学报,2006,27(2):43-47
    [11]陈瑞银,罗晓容,陈占坤,等.鄂尔多斯盆地中生代地层剥蚀量估算及其地质意义.地质学报,2006,80(5):685-693
    [12]刘池洋,赵红格,桂小军,等.鄂尔多斯盆地演化-改造的时空坐标及其成藏(矿)响应.地质学报,2006,80(5):617-638
    [13]裘亦楠.储层沉积学研究工作流程.石油勘探与开发,1990, 17(1):85-90
    [14]裘亦楠,薛叔浩等编著.油气储层评价技术.北京:石油工业出版社,2001
    [15]焦养泉,李思田.湖泊三角洲水下分流河道砂体储集性及储层地质模型研究.地学探索,1994,10:33-41
    [16]梅志超.沉积相与古地理重建.西安:西北大学出版社,1994
    [17]刘宝嗜,张锦泉.沉积成岩作用.北京:科学出版社,1992
    [18]李兴国.陆相储层沉积微相与微型构造.北京:石油工业出版社,2000
    [19]徐同台,王行信.中国含油气盆地粘土矿物.北京:石油工业出版社,2000
    [20]赵新民,李国平,王树寅,等.欠压实带与超压带的测井识别.石油与天然气地质,2002,23(1):63-65
    [21]赵阳,刘震,戴立昌.惠明凹陷临南地区油气输导系统及油气运移特征.西安石油学院学报(自然科学版),2003,18(3):1-3
    [22]真柄钦次.压实与流体运移(陈荷立等译).北京:石油工业出版社,1981
    [23]Bjorlykke, K. Fluid-1ow processes and diagenesis in sedimentary basins. In: Geolluids: Origin, Migration and Evolution of Fluids in Sedimentary Basins (Ed.J. Parnell). Special Publication 78, Geological Society of London, 1997: 127-140
    [24]Bjarkum, P. A. How important is pressure in causing dissolution of quartz in sandstoncs? Journal of Sedimentary Research, 1999(66) : 147-154
    [25]Bjorlykke, K., Egeberg, P. K. Quartz cementation in sedimentary basins. American Association of Petroleum Geologists Bulletin, 1998 (77): 1536-1548
    [26]Blake, R. E, Walter, L. M. Kinetics of feldspar and quartz dissolution at 70-80℃and near neutral PH: Effect of organic and NaCl. Geochim. Cosmochim. Acta, 1999(63) : 2043-2059
    [27]胡海燕.油气充注对成岩作用的影响.海相油气地质,2004,9 (1-2 ): 85-90
    [28]朱筱敏,孙超,刘成林,等.鄂尔多斯盆地苏里格地区储层成岩作用与模拟.中国地质,2007,34(2):276-282
    [29]Aase, N. E. , Bjorkum, P. A, Nadeau, P. H. Effect of grain-coating microquartz on presentation of reservoir porosity. American Association of Petroleum Geologists Bulletin, 1998, 80: 1654-1673
    [30]Barclay, S. A., Worden, R. H. Effects of reservoir wettability on quartz cementation in oil fields. In: Quartz cementation in sandstones (Eds R.H. Worden & S. Morad). Special Pubilication 29, International Association of Scdimcntologists. Blackwell, Science, Olford, 2000: 103-117
    [31]史基安,晋慧娟,薛莲花.长石砂岩中长石溶蚀作用发育机理及其影响因素分析.沉积学报,1994,12(3):67-75
    [32]Bjorlykke, K. Formation of secondary porosity: How important is it? In: Clastic Diagcncsis (Eds D. A. McDonald & R. C. Surdam). Memoir 37, American Association of Petroleum Geologists, Tulsa, ok, 1984: 277-286
    [33]Bloeh, S. Secondary porosity in sandstones: Significance, origin, relationship to subaerial unconfomities, and effect on predrill reservoir quality prediction. In: Reservoir Quality Assessment and Prediction in Clastic Rocks (Ed. M. D. Wilson). Short Course 30, Society of Sedimentary Geologist, Tulsa, OK, 1998: 136-159
    [34]陈忠,罗蚕潭.论砂岩储层次生孔隙的形成机制.成都理工学院学报增刊,1996,23 (增刊):35-41
    [35]陈丽华,赵澄林,纪友亮,等.碎屑岩天然气储集层次生孔隙的一种成因.石油与开发,1996,2(5): 77-79
    [36]陈永武.储集层与油气分布.北京:石油工业出版社,1995
    [37]姜在兴.沉积学.北京:石油工业出版社,2003:44-47
    [38]蔡进功,张枝焕,朱筱敏,等.东营凹陷烃类充注与储集层化学成岩作用.石油勘探与开发,2003,30 (3) : 7983
    [39]蔡春芳.塔里木盆地有机酸来源、分布及对成岩作用的影响.沉积学报,1997,15(3):103-108
    [40]陈永武.储集层与油气分布.北京:石油工业出版社,1995
    [41]宗国洪,卓勤功,郝雪峰.利用有机包裹体恢复油藏油气充注史及应用实例.油气地质与采收率,2002,6(3):49-51
    [42]郑有业,王思源,李小菊,等.有机流体包裹体研究在石油地质领域中的应用现状.地质地球化学,1998,26(2):72-76
    [43]胡文瑞.鄂尔多斯“福气”满盆.中国石油石化,2008,(8):40
    [44]刘建章,陈红汉,李剑等.鄂尔多斯盆地伊-陕斜坡山西组2段包裹体古流体压力分布及演化.石油学报,2008,29(2):226-230
    [45]尤欢增,李仲东,李良等.鄂尔多斯盆地上古生界低压异常研究中应注意的几个问题.矿物岩石,2007,27(2):64-69
    [46]刘德汉,卢焕章,肖贤明.油气包裹体及其在石油勘探和开发中的应用.广州:广东科技出版社,2007
    [47]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.石油学报,2007,28(6):37-42
    [48]宋明水.含烃流体包裹体丰度法追溯古油水界面的局限性.油气地质与采收率,2007,14(3):5-8
    [49]李荣西,席胜利,邸领军.鄂尔多斯盆地中部断裂带方解石脉天然气包裹体研究.石油实验地质,2006,28(5):463-467
    [50]陈彦华,刘莺.成岩相-储集体预测的新途径.石油实验地质,1994,16 (3) :274-281
    [51]蔡春芳,梅博文,马亭等.塔里木盆地流体-岩石相互作用研究.北京:地质出版社,1997
    [52]孙玉善,杨帆.再论东河砂岩孔隙成因.沉积学报,1999,17(增刊):699-750
    [53]寿建峰,朱国华.砂岩储层孔隙保存的定量顶测研究.地质科学,1998,33(2): 244-250
    [54]祝总祺,苗建宇,刘文荣等.论压力封存箱及其对次生孔隙的保护作用.西北大学学报(自然科学版),1997,27(1):73-78
    [55] Dixon S A, Summers D M, Sμrdam R C. Diagenesis and preservation of porosity in Nor phlet Formation (Μpper Jμrassic), soμth ernAlabama. AAPG Bμlletin, 1989, 73: 707-728
    [56] Hμe A Y, Fμnnier L J, Vandenbroμcke M, et al. Northern Lake Tanganyika: An example of organic sedimentation in an anoxic rift lake in Katz B J, eds. Lacμstrine Basin Exploration. AAPG Memoir 50, The American Association of Petroleμm Geologists, Tμlsa , Oklaboma,Μ. S. A 1990: 169-186
    [57] Heald M T, eregg R. C. Differential cementation in the Tμscarora sandstone. Joμrnal of Sedimentary Petrology, 1960, 30: 568-577
    [58]李会军,程文艳,张文才.深层异常温压条件下碎屑岩成岩特征初探.石油勘探与开发,2001,28(6):28-31
    [59]代金友,张一伟,熊琦华,等.成岩作用对储集层物性贡献比率研究.石油勘探与开发, 2003,30(4):54-55,71
    [60]张金亮,司学强,梁杰.陕甘宁盆地庆阳地区长8油层砂岩成岩作用及其对储层性质的影响.沉积学报,2004,22(2):225-233
    [61]黄思静,张萌,朱世全等.砂岩孔隙成因对孔隙度和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.成都理工大学学报(自然科学版),2004,3l(6):648-653
    [62]黄思静,侯中健.地下孔隙率和渗透率在空间和时间上的变化及影响因素.沉积学报,2001,19 (2):224-231
    [63]何东博,应风样,郑浚茂.碎屑岩成岩作用数值模拟及其应用.石油勘探与开发,2004,31(6)66-68
    [64]黄智辉编著.地球物理测井资料在分析沉积环境中的应用.北京:地质出版社,1986
    [65]黄思静,谢连文,张萌.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.成都理工大学学报(自然科学版),2004, 31(3):273-280

© 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