岩性油气藏 ›› 2020, Vol. 32 ›› Issue (3): 133143.doi: 10.12108/yxyqc.20200313
陈明江, 程亮, 陆涛
CHEN Mingjiang, CHENG Liang, LU Tao
摘要: 伊拉克Ahdeb油田Khasib油藏为中东地区典型的孔隙型碳酸盐岩油藏,具有高孔、低渗、纵向非均质性极强等特征。为快速厘定因储层孔隙结构“多模态”造成水平井网注采过程中含水上升快、水窜现象严重等突出问题,以岩心观察、铸体薄片鉴定、扫描电镜和压汞毛管压力曲线定量分析为手段,以岩相和岩石物理特征为依据将储层划分为24种岩石类型。在此基础上,提取各岩石类型有效喉道半径,并通过测井曲线对比刻画出岩石类型的空间展布,从而实现有效喉道半径的空间展布刻画。研究表明:①Khasib油藏有效喉道半径纵向差异达数十倍,向下呈明显降低趋势;平面上沿构造长轴由东向西降低,垂直构造长轴表现为北高南低的特征;②Khasib2-1-2 L小层为一套平均厚度0.8 m、以粒间孔为主的内碎屑颗粒灰岩,其平均有效喉道半径7.2 μm,平均渗透率高达278.0 mD,远高于相邻小层,为典型的高渗“贼层”;③Khasib2-1-2 L小层在油田范围内分布稳定,是水流优势通道和注水突窜的主控因素;④典型产水特征曲线、生产测井和过路直井电阻率变化均验证了高渗层窜流特征。研究结果为油藏稳油控水提供了可靠措施依据,并据此提出了合理的开发调整措施建议。
中图分类号:
[1] 罗蛰潭,王允诚.油气储集层的孔隙结构.北京:科学出版社, 1986. LUO Z T,WANG Y C. Pore structure of petroleum reservoirs. Beijing:Science Press,1986. [2] CATHY H,VOLKER V,SIMON T,et al. Pore system characterization in heterogeneous carbonates:an alternative approach to widely-used rock-typing methodologies. Marine and Petroleum Geology,2010,27:772-793. [3] 马旭鹏.储层物性参数与其微观孔隙结构的内在联系.油气藏评价与开发,2010,33(3):216-219. MAX P. Internal relationship between physical property and micropore structure of reservoir. Reservoir Evaluation and Development,2010,33(3):216-219. [4] 陈欢庆,曹晨,梁淑贤,等.储层孔隙结构研究进展.天然气地球科学,2013,23(2):227-237. CHEN H Q,CAO C,LIANG S X,et al. Research advances on reservoir pores. Natural Gas Geoscience,2013,23(2):227-237. [5] 郝乐伟,王琪,唐俊.储层岩石微观孔隙结构研究方法与理论综述.岩性油气藏,2013,25(5):123-128. HAO L W,WANG Q,TANG J. Research progress of reservoir microscopic pore structure. Lithologic reservoirs,2013,25(5):123-128. [6] 熊敏,王勤田.盘河断块区孔隙结构与驱油效率.石油与天然气地质,2003,24(1):42-54. XIONG M,WANG Q T. Pore structure and oil displacement efficiency in Panhe fault-block area. Oil & Gas Geology,2003,24(1):42-54. [7] 罗月明,刘伟新,谭学群,等.鄂尔多斯大牛地气田上古生界储层成岩作用评价.石油实验地质,2007,29(4):384-390. LUO Y M,LIU W X,TAN X Q,et al. Diagenesis and reservoir evaluation on the Upper Paleozoic reservoir sandstones in Daniudi gas field,the Ordos Basin. Petroleum Geology&Experiment, 2007,29(4):384-390. [8] ANNA B,SUSANNE G,PETER K. Porosity-preserving chlorite cements in shallow-marine volcaniclastic sandstones:Evidence from Cretceous sandstones of Sawan gas field,Pakistan. AAPG Bulletin,2009,93(5):595-615. [9] 庄锡进,胡宗全,朱筱敏.准噶尔盆地西北缘侏罗系储层.古地理学报,2002,4(1):90-96. ZHUANG X J,HU Z Q,ZHU X M. Jurassic reservoir of the northwest edge in Junggar Basin. Journal of Palaeogeography, 2002,4(1):90-96. [10] PHILIP H N. Pore-throat sizes in sandstones,tight sandstones, and shales. AAPG Bulletin,2009,93(3):329-340. [11] WEGER R J,EBERLI G P,BAECHLE G T,et al. Quantification of pore structure and its effect on sonic velocity and permeability in carbonates. AAPG Bulletin,2009,93(10):1297-1317. [12] 于雯泉,李丽,方涛,等.断陷盆地深层低渗透天然气储层孔隙演化定量研究.天然气地球科学,2010,21(3):397-405. YU W Q,LI L,FANG T,et al. Quantitative research for porosity evolution in low permeability deep gas reservoir of rift-subsidence basin. Natural Gas Geoscience,2010,21(3):397-405. [13] 刘航宇,田中元,徐振永.基于分形特征的碳酸盐岩储层孔隙结构定量评价.岩性油气藏,2017,29(5):97-105. LIU H Y,TIAN Z Y,XU Z Y. Quantitative evaluation of carbonate reservoir pore structure based on fractal characteristics. Lithologic Reservoirs,2017,29(5):97-105. [14] 葛小波,李吉君,卢双舫,等.基于分形理论的致密砂岩储层微观孔隙结构表征:以冀中坳陷致密砂岩储层为例.岩性油气藏,2017,29(5):106-112. GE X B,LI J J,LU S F,et al. Fractal characteristics of tight sandstone reservoir using mercury intrusion capillary pressure:a case of tight sandstone reservoir in Jizhong Depression. Lithologic Reservoirs,2017,29(5):106-112. [15] 谢武仁,杨威,杨光,等.川中地区上三叠统须家河组砂岩储层孔隙结构特征.天然气地球科学,2010,21(3):435-440. XIE W R,YANG W,YANG G,et al. Pore structure features of sandstone reservoirs in the Upper Triassic Xujiahe Formation in the central part of Sichuan Basin. Natural Gas Geoscience, 2010,21(3):435-440. [16] 唐海发,彭仕宓,赵彦超.大牛地气田盒2+3段致密砂岩储层微观孔隙结构特征及其分类评价.矿物岩石,2006,26(3):107-113. TANG H F,PENG S B,ZHAO Y C. Characteristics of pore structure and reservoir evaluation in H2+3 tight gas reservoir, Daniudi Gas field. Journal of Mineralogy and Petrology,2006, 26(3):107-113. [17] 姜均伟,朱宇清,徐星,等.伊拉克H油田碳酸盐岩储层的孔隙结构特征及其对电阻率的影响.地球物理学进展,2015,30(1):203-209. JIANG J W,ZHU Y Q,XU X,et al. Pore structure characteristics of the carbonate reservoir and their influence on electric properties in H oilfield,Iraq. Progress in Geophysics (in Chinese), 2015,30(1):203-209. [18] 邓虎成,周文,郭睿,等.伊拉克艾哈代布油田中-下白垩统碳酸盐岩储层孔隙结构及控制因素.岩石学报,2014,30(3):801-812. DENG H C,ZHOU W,GUO R,et al. Pore structure characteristics and control factors of carbonate reservoirs:the MiddleLower Cretaceous formation,Ahdeb Oilfield,Iraq. Acta Petrologica Sinica,2014,30(3):801-812. [19] DUTTA D,AL-MURAIKHI H R,TIWARY A,et al. Pore system characterization of a low permeability reservoir and its related development and production issues:a case study from Ratawi limestone,Umm Gudair Field,Kuwai. SPE 175363,2015. [20] 何文祥,杨乐,马超亚,等.特低渗透储层微观孔隙结构参数对渗流行为的影响:以鄂尔多斯盆地长6储层为例.天然气地球科学,2011,22(3):477-481. HE W X,YANG L,MA C Y,et al. Effect of micro-pore structure parameter on seepage characteristics in ultra-low permeability reservoir:a case from Chang 6 reservoir of Ordos Basin. Natural Gas Geoscience,2011,22(3):477-481. [21] 蔡忠.储集层孔隙结构与驱油效率关系研究.石油勘探与开发,2000,27(6):45-49. CAI Z. Relationship between reservoir pore structure and oil displacement efficiency. Petroleum Exploration and Development,2000,27(6):45-49. [22] 卢明国,童小兰.江汉盆地新沟嘴组砂岩孔隙结构与产油潜力.大庆石油地质与开发,2007,26(4):31-34. LU M G,TONG X L. Characteristics of pore structures and oil production potential of sandstone reservoir of Paleogene Xingouzui Formation in Jianghan Basin. Petroleum Geology&Development in Daqing,2007,26(4):31-34. [23] 李继红,曲志浩,陈清华.注水开发对孤岛油田储层微观结构的影响.石油实验地质,2001,23(4):424-428. LI J H,QU Z H,CHEN Q H. Effect of injecting water development on microstructure of reservoirs in Gudao Oilfield. Petroleum Geology&Experiment,2001,23(4):424-428. [24] 闫国亮,孙建孟,刘学锋,等.储层岩石微观孔隙结构特征及其对渗透率影响.测井技术,2014,38(1):28-32. YAN G L,SUN J M,LIU X F,et al. Characterization of microscopic pore structure of reservoir rock and its effect on permeability. Well Logging Technology,2014,38(1):28-32. [25] 王小敏,樊太亮.碳酸盐岩储层渗透率研究现状与前瞻.地质学前缘,2013,20(5):166-174. WANG X M,FAN T L. Progress of research on permeability of carbonate rocks. Earth Science Frontiers,2013,20(5):166-174. [26] 陈明江,黄婷婷,颜其彬,等.伊拉克Ahdeb油田稠油层测井识别及分布特征研究新方法.测井技术,2017,41(2):156-164. CHEN M J,HUANG T T,YAN Q B,et al. A new method to identify heavy oil and characterize its distribution with well logs in Ahdeb Oilfield,Iraq. Well Logging Techlology,2017,41(2):156-164. [27] 杜洋,汪娟,方健,等.伊拉克中部上白垩统Khasib组岩溶储层演化及异常高渗层成因.地质科学,2015,50(4):1218-1234. DU Y,WANG J,FANG J,et al. The karst reservoir evolution and genesis of abnormal high permeability zone of the Upper Cretaceous Khasib Formation in central Iraq. Chinese Journal of Geology,2015,50(4):1218-1234. [28] 汪娟,杜洋,熊舒,等.伊拉克中部A油田上白垩统Khasib组储层流动单元研究,地质科技情报,2016,35(5):154-162. WANG J,DU Y,XIONG S,et al. Flow unit identification and distribution in Upper Cretaceous of the Khasib Formation in A oilfield,Central Iraq. Geological Science and Technology Information,2016,35(5):154-162. [29] DUNHAM R J. Classification of carbonate rocks according to depositional texture. AAPG Memoir 1,1962:108-121. [30] ARCHIE G E. Classification of carbonate reservoir rocks and petrophysical considerations. AAPG Bulletin,1952,36(2):278-298. [31] LUCIA F J. Rock-fabric/petrophysical classification of carbonate pore space for reservoir characterization. AAPG Bulletin, 1995,79(9):1275-1300. [32] CHEKANI M,KHARRAT R. Reservoir rock typing in a carbonate reservoir-cooperation of core and log data:case study. SPE 123703,2009. [33] 颜其彬,陈明江,汪娟,等.碳酸盐岩储层渗透率与孔隙度、喉道半径的关系.天然气工业,2015,35(6):30-36. YAN Q B,CHEN M J,WANG J,et al.Correlation among permeability,porosity and pore throat radius of carbonate reservoirs. Natural Gas Industry,2015,35(6):30-36. |
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