YIN Shuai, DING Wenlong, LI Ang, ZHAO Jinli, SHAN Yuming. Numerical Analysis on the Effect of Fractures on Elastic Properties of Tight Clastic Reservoirs[J]. Petroleum Drilling Techniques, 2016, 44(2): 112-118. DOI: 10.11911/syztjs.201602019
Citation: YIN Shuai, DING Wenlong, LI Ang, ZHAO Jinli, SHAN Yuming. Numerical Analysis on the Effect of Fractures on Elastic Properties of Tight Clastic Reservoirs[J]. Petroleum Drilling Techniques, 2016, 44(2): 112-118. DOI: 10.11911/syztjs.201602019

Numerical Analysis on the Effect of Fractures on Elastic Properties of Tight Clastic Reservoirs

More Information
  • Received Date: August 29, 2015
  • Revised Date: February 26, 2016
  • The effective prediction of fracture development areas is the key to pinpointing sweet spots in tight gas reservoirs, but currently, the fractures in tight clastic reservoirs of transitional facies are poorly predicted. In this paper, the pore aspect ratio and dry rock bulk modulus were calculated by using the DEM theory model. Later, the effect of fractures on elastic properties of tight clastic formations was analyzed and a correlation between fractures of different scales was proposed. Results indicated that crack development sections could be well identified by virtue of the pore aspect ratio α which was determined by the DEM theory model. By decreasing the pore aspect ratio from 1.0 to 0.01, both the rock bulk modulus and the shear modulus decreased gradually. Results showed that the decline of rock elastic properties was more influenced by cracks than by pores. During the conversion of dry rocks into fluid saturated rocks, the increase amplitude of rock bulk modulus was 3.1% in the strata with undeveloped fractures. In the strata with developed fractures, however, the increasing amplitude of rock bulk modulus was 7.0% when the rock porosity was lower than 4.7%, and otherwise it was 23.0%. The rock porosity at the inflection point could act as an indicator to measure the development degree of fractures in rocks. A positive correlation between dry rock bulk modulus and shear modulus in the strata with undeveloped fractures was detected, but there was a negative correlation in the strata with developed fractures. It was shown that development characteristics of fractures in clastic formations could be characterized quantitatively by using elastic properties of rocks.
  • [1]
    FARRELL N J C,HEALY D,TAYLOR C W.Anisotropy of permeability in faulted porous sandstones[J].Journal of Structural Geology,2014,63:50-67.
    [2]
    DANA E,SKOCZYLAS F.Gas relative permeability and pore structure of sandstones[J].International Journal of Rock Mechanics and Mining Sciences,1999,36(5):613-625.
    [3]
    NELSON P H.Pore-throat sizes in sandstones,tight sandstones,and shales[J].AAPG Bulletin,2009,93(3):329-340.
    [4]
    张映红,路保平,陈作,等.中国陆相致密油开采技术发展策略思考[J].石油钻探技术,2015,43(1):1-6. ZHANG Yinghong,LU Baoping,CHEN Zuo,et al.Technical strategy thinking fordeveloping continental tight oil in China[J].Petroleum Drilling Techniques,2015,43(1):1-6.
    [5]
    LASH G G,ENGELDER T.An analysis of horizontal microcracking during catagenesis:example from the catskill delta complex[J].AAPG Bulletin,2005,89(11):1433-1449.
    [6]
    张晋言,刘海河,刘伟,等.基于双"泥质指示因子"的砂泥岩薄互层饱和度模型[J].石油钻探技术,2015,43(2):59-62. ZHANG Jinyan,LIU Haihe,LIU Wei,et al.Thin sand and mudstone interbed saturation model based on a dual mudstone indicator[J].Petroleum Drilling Techniques,2015,43(2):59-62.
    [7]
    ANDERS M H,LAUBACH S E,SCHOLZ C H.Microfractures:a review[J].Journal of Structural Geology,2014,69(B):377-394.
    [8]
    尹帅,单钰铭,周文,等.Hoek-Brown准则在致密砂岩弹性参数测井解释中的应用[J].石油钻探技术,2015,43(1):88-95. YIN Shuai,SHAN Yuming,ZHOU Wen,et al.Application of Hoek-Brown criterion for tight sandstone elastic parameters in log interpretation[J].Petroleum Drilling Techniques,2015,43(1):88-95.
    [9]
    GALE J F W,LAUBACH S E,OLSON J E,et al.Natural fractures in shale:a review and new observations[J].AAPG Bulletin,2014,98(11):2165-2216.
    [10]
    ZHANG Jiaxiang,WONG Tengfong,DAVIS D M.Micromechanics of pressure-induced grain crushing in porous rocks[J].Journal of Geophysical Research,1990,95(B1):341-352.
    [11]
    LAMA R D,VUTUKURI V S.Handbook on mechanical properties of rocks:vol.Ⅱ[M].Clausthal:Transport Technology Publications,1978.
    [12]
    MENNDEZ Beatriz,ZHU Wenlu,WONG Tengfong.Micromechanics of brittle faulting and cataclastic flow in Berea sandstone[J].Journal of Structural Geology,1996,18(1):1-16.
    [13]
    BERRYMAN J G,PRIDE S R,WANG H F.A differential scheme for elastic properties of rocks with dry or saturated cracks[J].Geophysical Journal International,2002,151(2):597-611.
    [14]
    BERRYMAN J G.Single-scattering approximations for coefficients in Biot’s equations of poroelasticity[J].Journal Acoust Society American,1992,91(2):551-570.
    [15]
    ESHELBY J D.The determination of the elastic field of an ellipsoidal inclusion,and related problems[J].Proceedings of the Royal Society A,Mathematical,Physical and Engineering Sciences,1957,241:376-394.
    [16]
    LI Hongbing,ZHANG Jiajia.Analytical approximations of bulk and shear moduli for dry rock based on the differential effective medium theory[J].Geophysical Prospecting,2012,60(2):281-292.
    [17]
    KEYSR G,XU Shiyu.An approximation for the Xu-White velocity model[J].Geophysics,1999,67(5):1406-1414.
    [18]
    BUDIANSK Y B.On the elastic moduli of some heterogeneous materials[J].Journal of the Mechanics and Physics of Solids,1965,13(4):223-227.
    [19]
    BREEYMAN J G,Berge P A.Critique of two explicit schemes for estimating elastic properties of multiphase composites[J].Mechanics of Materials,1996,22(2):149-164.
    [20]
    SU Xianbo,LIN Xiaoying,ZHAO Mengjun,et al.The upper Paleozoic coalbed methane system in the Qinshui Basin, China[J].AAPG Bulletin,2005,89(1):81-100.
    [21]
    尹帅,丁文龙,孙雅雄,等.泥页岩单轴抗压破裂特征及UCS影响因素[J].地学前缘,2016,23(2):75-95. YIN Shuai,DING Wenlong,SUN Yaxiong,et al.Shale uniaxial compressive failure property and the affecting factors of UCS[J].Earth Science Frontiers,2016,23(2):75-95.
    [22]
    LI Hongbing,ZHANG Jiajia.Elastic moduli of dry rocks containing spheroidal pores based on differential effective medium theory[J].Journal of Applied Geophysics,2011,75(4):671-678.
    [23]
    MAVKO G,MUJERKI T,DVORKIN J.Rock physicshandbook:tools for seismic analysis in porous media[M].Cambridge:Cambridge University Press,2003.
    [24]
    YASAR E.Failure and failure theories for anisotropic rocks//Proceedings of the 17th International Mining Congress and Exhibition of Turkey-IMCET 2001[M].Ankara:Chamber of Mining Engineers of Turkey,2001:417-424.
    [25]
    丁文龙,尹帅,王兴华,等.致密砂岩气储层裂缝评价方法与表征[J].地学前缘,2015,22(4):173-187. DING Wenlong,YIN Shuai,WANG Xinghua,et al.Assessment method and characterization of tight sandstone gas reservoir fractures[J].Earth Science Frontiers,2015,22(4):173-187.
    [26]
    BIENIAWSKI Z T.Mechanism of brittle fracture of rock:partⅡ:experimental studies[J].International Journal of Rock Mechanics and Mining Sciences Geomechanics Abstracts,1967,4(4):407-423.
    [27]
    李伟,要惠芳,刘鸿福,等.基于显微CT的不同煤体结构煤三维孔隙精细表征[J].煤炭学报,2014,39(6):1127-1131. LI Wei,YAO Huifang,LIU Hongfu,et al.Advanced characterization of three-dimensional pores in coals with different coal-body structure by micro-CT[J].Journal of China Coal Society,2014,39(6):1127-1131.
    [28]
    LAJTAI E Z.Microscopic fracture processes in a granite[J].Rock Mechanics and Rock Engineering,1998,31(4):237-250.
    [29]
    KONCAGUL E C,SANTI P M.Predicting the unconfined compressive strength of the Breathitt shale using slake durability,shore hardness and rock structural properties[J].International Journal of Rock Mechanics and Mining Science, 1999,36(2):139-153.
    [30]
    STEIGER R P,LEUNG P K.Quantitative determination of the mechanical properties of shale[R].SPE 18024,1992.
    [31]
    尹帅,丁文龙,赵威,等.基于阵列声波测井的海陆过渡相碎屑岩地层裂缝识别方法[J].石油钻探技术,2015,43(5):75-82. YIN Shuai,DING Wenlong,ZHAO Wei,et al.Fracture identification method for marine-continental transitional clastic rocks based on the array acoustic logging[J].Petroleum Drilling Techniques,2015,43(5):75-82.
    [32]
    BATZLE M,WANG Zhijing.Seismic properties of pore fluids[J].Geophysics,1992,57(11):1396-1408.
    [33]
    尹帅,丁文龙,黄昌杰,等.非饱和致密砂岩储层含气饱和度测井评价[J].天然气地球科学,2016,27(1):1-10. YIN Shuai, DING Wenlong, HUANG Changjie, et al.Gas saturation logging evaluation of partially saturated tight sandstone reservoir[J].Natural Gas Geoscience,2016,27(1):1-10.
    [34]
    LI Hongbing,ZHANG Jiajia.Modulus ratio of dry rock based on differential effective medium theory[J].Geophysics,2010, 75(2):N43-N50.
  • Cited by

    Periodical cited type(26)

    1. 魏玲. 桥式同心配水器结构优化及其在南堡油田的应用. 石油工业技术监督. 2024(01): 57-60 .
    2. 王竞崎. 分层注水井全电控测试技术完善与应用. 石油矿场机械. 2024(04): 57-62 .
    3. 张福涛. 同心分注井在线电动验封仪研制及应用. 石油地质与工程. 2024(04): 101-104+111 .
    4. 刘义刚,刘长龙,张磊,张乐,薛德栋,徐元德. 海上油田压力波控制高效测调注水技术. 中国海上油气. 2024(05): 137-145 .
    5. 王涛,李尧,何辉. 考虑压力约束的精细分层注水耦合调配模型. 石油钻探技术. 2023(02): 95-101 . 本站查看
    6. 刘建升,牛晨辉,程翔,于洋. 智能分层采油技术在姬塬油田H油藏的应用. 石油化工应用. 2023(04): 76-79 .
    7. 孟祥海,刘义刚,陈征,张乐,蓝飞,张志熊,陈华兴. 小通径注水井测调一体化分注技术研究及应用. 钻采工艺. 2022(01): 95-100 .
    8. 佟音,金振东,刘军利,张伟超,李井慧,郭颖. 大庆油田缆控分层注水技术研究及应用. 石油科技论坛. 2022(03): 94-99+105 .
    9. 杨玲智,周志平,杨海恩,姬振宁. 桥式同心井下恒流分层注水技术. 石油钻探技术. 2022(04): 104-108 . 本站查看
    10. 王超. 偏心分层注水井一体化验封测调工具研制. 石油矿场机械. 2021(01): 73-76 .
    11. 毕天琪,杨晓东,田东海,牟燕. 智能分注分层流量自动比对测试技术研究与应用. 油气田地面工程. 2021(02): 11-14+21 .
    12. 郭颖,朱振坤,金振东,李井慧,周宇鹏. 自动测调配水器设计及研制. 化学工程与装备. 2021(01): 135-137 .
    13. 贾贻勇,李永康. 胜坨油田套损井分层注水及测调技术. 石油钻探技术. 2021(02): 107-112 . 本站查看
    14. 李永康. 分注管柱寿命影响因素分析及延寿对策初探. 石油工业技术监督. 2021(05): 1-4 .
    15. 李鹏伟,王建宁,姜燕,苏毅,张旭,赵非,陈军政. 桥式同心分注井验封测调一体化工具研制及应用. 石油矿场机械. 2021(05): 84-89 .
    16. 何海峰. 胜利海上疏松砂岩油藏分层防砂分层采油技术. 石油钻探技术. 2021(06): 99-104 . 本站查看
    17. 杨玲智,刘延青,胡改星,申晓莉,毕福伟. 长庆油田同心验封测调一体化分层注水技术. 石油钻探技术. 2020(02): 113-117 . 本站查看
    18. 郭宏峰,杨树坤,段凯滨,季公明,史景岩,安宗辉. 渤海油田可反洗测调一体分层注水工艺. 石油钻探技术. 2020(03): 97-101 . 本站查看
    19. 肖国华,黄晓蒙,李会杰,关海峰. 直读测调偏心恒流配水器研制. 特种油气藏. 2020(05): 151-156 .
    20. 谢宇. 压力波无线智能分注工艺研究. 采油工程. 2020(04): 49-54+81-82 .
    21. 贾庆升,任从坤,张福涛,王向东,刘艳霞,张剑. 海上油田长效精细分注技术研究与应用. 石油机械. 2019(04): 84-89 .
    22. 贾庆升. 无线智能分层注采技术研究. 石油机械. 2019(07): 99-104 .
    23. 刘义刚,陈征,孟祥海,张乐,蓝飞,宋鑫. 渤海油田分层注水井电缆永置智能测调关键技术. 石油钻探技术. 2019(03): 133-139 . 本站查看
    24. 赵全民,何汉平,何青水,陈向军,王宝峰. 哈萨克斯坦SIPC油田开发主要问题与技术对策. 石油钻探技术. 2019(04): 92-96 . 本站查看
    25. 杨丽娟. 电磁流量计在油田注水计量中的应用研究. 中国设备工程. 2019(23): 204-205 .
    26. 任从坤. 清砂解堵反洗装置研制与应用. 石油矿场机械. 2018(06): 65-67 .

    Other cited types(4)

Catalog

    Article Metrics

    Article views (2787) PDF downloads (3120) Cited by(30)
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return