收稿日期: 2014-12-02
修回日期: 2015-02-04
网络出版日期: 2015-10-10
基金资助
中国石油化工股份有限公司油气专项子课题“致密砂岩气藏水平井开发关键技术”(编号:P13052)；“中央高校基本科研业务费专项资金”(编号:14CX05128A)联合资助.
Research on Three-dimensional Mechanical Parameters′ Distributionof the Tight Sandstone Reservoirs in Daniudi Gasfield
Received date: 2014-12-02
Revised date: 2015-02-04
Online published: 2015-10-10
作为中国石化重要的天然气勘探开发基地之一，鄂尔多斯盆地大牛地气田上古生界致密砂岩气藏目前水平井压裂开采效果不理想。针对该气田上古生界致密砂岩储层岩石力学参数研究较为薄弱的现状，在对目的层岩心力学参数单轴/三轴压缩试验测试和纵横声波速度测试的基础上，首先建立了静态、动态弹性参数转换关系和纵横波速关系；在此基础上结合前人成果构建了岩石力学参数单井计算模型；并进一步运用测井资料和三维地震层速度资料确定了目的层力学参数场特征。结果表明，该区上古生界致密砂岩储层内聚力在2～10MPa之间，内摩擦角在30°～42°之间，抗张强度多数集中在5～15MPa之间，抗压强度多数集中在150～250MPa之间。太2段—盒1段弹性模量大部分在15～40GPa之间，泊松比在0.22～0.27之间，横向上每一层岩石弹性参数都存在明显的非均一性，垂向上随深度增加岩石力学参数呈变大趋势。该研究成果一方面可为该区地应力场模拟、气田钻完井设计及目的层压裂改造施工提供基础力学参数，同时研究中确定的动静态岩石力学参数转换、纵横波速等定量关系可为邻近地区相关研究提供参考或借鉴。
陆诗阔，王迪，李玉坤，孟宪军，胡向阳，陈舒薇 . 鄂尔多斯盆地大牛地气田致密砂岩储层三维岩石力学参数场研究[J]. 天然气地球科学, 2015 , 26(10) : 1844 -1850 . DOI: 10.11764/j.issn.1672-1926.2015.10.1844
Based on mechanical parameters testing by uniaxial/triaxial compression experiment and compressinal & shear acoustic velocities testing,the relationship between the static and dynamic elastic parameters of the tight sandstone reservoirs of Daniudi Gasfield in the Ordos Basin was established,then a single-well calculation model of mechanical parameters was constructed referring to predecessors′ achievements,further the characteristics of mechanical parameters field were investigated with log data and three-dimensional seismic interval velocity data.The results show that the cohesion of the Upper Paleozoic tight sandstone reservoirs ranges from 2MPa to 10MPa,the angle of internal friction being between 30° and 42°,the tensile strength mostly being between 5MPa and 15MPa,and the compressive strength mostly being between 150MPa and 250MPa.The modulus of elasticity of C2t2-P1x1 sandstone reservoirs is mostly between 15GPa and 40GPa,and their Poisson′s ratio is between 0.22 and 0.27.The rock elastic parameters show obvious inhomogeneities horizontally and their values increase with depth vertically.The research results can provide basic mechanical parameters for stress field simulation,gas drilling & completion design and target-layers′ fracturing,additionally the quantitative relationship between the static and dynamic mechanical parameters and that between the shear and longitudinal wave velocity might supply a reference for similar study in surrounding areas.
［1］[JP2]Li Jian,Wu Zhiyong.The Exploration and Development Technologies in Deep Tight Sandstone Gas Reservoirs[M].Beijing:Petroleum Industry Press,2002:1-3.[李健,吴智勇.深层致密砂岩气藏勘探开发技术[M].北京:石油工业出版社,2002:1-3.]
[2]Wang Shaofei,An Wenhong,Chen Peng,et al.Characteristic and development techniques of Sulige tight gas pool[J].Natural Gas Geoscience,2013,24(1):138-145.[王少飞,安文宏,陈鹏,等.苏里格气田致密气藏特征与开发技术[J].天然气地球科学,2013,24(1):138-145.]
[3][KG*5/6]Lu Baoping,Bao Hongzhi.Advances in calculation methods for rock mechanics parameters[J].Petroleum Drilling Techniques,2005,33(5):44-47.[路保平,鲍洪志.岩石力学参数求取方法进展[J].石油钻探技术,2005,33(5):44-47.]
[4]Liu Wenping.The experimental study on rock mechanical parameters of certain area[J].Sino-Global Energy,2012,17(6):35-38.[刘文苹.某区域岩石力学参数试验研究[J].中外能源,2012,17(6):35-38.]
[5]Zhang Xudong,Xue Chengjin,Zhang Ye.Research and application of rock mechanical parameters and in-situ stress in Tuofutai area of Tahe Oilfield[J].Journal of Oil and Gas Technology,2011,33(6):132-134.[张旭东,薛承瑾,张烨.塔河油田托甫台地区岩石力学参数和地应力试验研究及其应用[J].石油天然气学报,2011,33(6):132-134.]
[6]Gui Rong,Wan Yongping.Rock mechanics parameter calculation based on conventional logging data:A case study of Upper Paleozoic in Ordos Basin[J].Journal of Geomechanics,2012,18(4):418-424.[归榕,万永平.基于常规测井数据计算储层岩石力学参数——以鄂尔多斯盆地上古生界为例[J].地质力学学报,2012,18(4):418-424.]
[7]Li Jinzhu,Li Shuanglin.Calculation of rock mechanics parameters using compressional and shear waves data and its application[J].Well Logging Technology,2003,27(supplement):15-18.[李金柱,李双林.岩石力学参数的计算及应用[J].测井技术,2003,27(增刊):15-18.]
[8]Zhang Shulin.The study of the rock elastic and property in Yingqiong Basin[J].Natural Gas Geoscience,2000,11(3):35-43.[张树林.莺琼盆地岩石弹性物性规律之研究[J].天然气地球科学,2000,11(3):35-43.]
[9]Sun Yiling,Wang Xiujuan,Zhou Yongbing.Rock mechanics parameter characteristic of Fuyang reservolr in Sanzhao Depression[J].Exploration and Development Research Institute of Daqing Oil Field Company,2001,20(4):19-21.[孙贻铃,王秀娟,周永炳.三肇凹陷扶杨油层岩石力学参数特征[J].大庆石油地质与开发,2001,20(4):19-21.]
[10]Chen Penggang,Shi Pengtao,Wang Qingqing,et al.Research on rock mechanics parameters and ground stress of Xifeng area[J].Tuha Oil and Gas,2012,17(3):244-246.[陈朋刚,史鹏涛,王青青,等.西峰地区岩石力学参数及地应力研究[J].吐哈油气,2012,17(3):244-246.]
[11][JP2]Cao Zhenglin,Zheng Hongjun,Gou Yingchun,et al.Method of prediction and application on stochastical simulating 3D parameter field of rock mechanics[J].Geoscience.2009,23(6):1126-1130.[曹正林,郑红军,苟迎春,等.三维岩石力学参数场随机模拟预测方法及应用[J].现代地质,2009,23(6):1126-1130.]
[12]Liu Qi,Lu Yaoru,Li Xiaozhao.The effect of the pore water pressure on the rock mechanics parameters[J].Acta Geoscientica Sinica,2008,29(5):660-664.[刘琦,卢耀如,李晓昭.孔隙水压力对岩石力学参数的影响[J].地球学报,2008,29(5):660-664.]
[13][JP2]Wang Guihua,Zhang Jianguo,Cheng Yuanfang,et al.Experimental study on the effect of the water content on the rock mechanical parameters[J].Petroleum Drilling Techniques,2001,29(4):59-61.[王桂花,张建国,程远方,等.含水饱和度对岩石力学参数影响的实验研究[J].石油钻探技术,2001,29(4):59-61.]
[14][JP2]Chen Qiyan,Gao Jianhu,Dong Xuehua,et al.Shear velocity estimation in carbonate reservoir[J].Natural Gas Geoscience,2014,25(6):921-927.[陈启艳,高建虎,董雪华,等.碳酸盐岩地层横波速度预测[J].天然气地球科学,2014,25(6):921-927.]
[15]Zhang Xiaoqing,Gui Zhixian.On the relationship between P-wave and S-wave in rocks[J].Journal of Oil and Gas Technology,2006,28(4):255-257.[张小庆,桂志先.岩石中纵横波速度关系研究[J].石油天然气学报,2006,28(4):255-257.]
[16]Ma Zhonggao,Xie Jigao.Relationship among compressional wave,shear wave velocities and density of rocks[J].Progress in Geophysics,2005,20(4):905-910.[马中高,解吉高.岩石的纵、横波速度与密度的规律研究[J].地球物理学进展,2005,20(4):905-910.]
[17]Ma Zhonggao,Wu Xiangyang,Wang Zhonghai.Effect of effective pressure on compressional and shear wave velocities[J].Progress in Exploration Geophysics,2006,29(3):183-186.[马中高,伍向阳,王中海.有效压力对岩石纵横波速度的影响[J].勘探地球物理进展,2006,29(3):183-186.]
[18]Zoback M D.Reservoir Geomechanics[M].Shi Lin,Chen Chaowei,Liu Yushi,et al,translation.Beijing:Petroleum Industry Press,2012:73-87.[马克·佐白科.储层地质力学[M].石林,陈朝伟,刘玉石,等译.北京:石油工业出版社,2012:73-87.]
[19]Chang C D,Zoback M D,Khaksar A.Empirical relations between rock strength and physical properties in sedimentary rocks[J].Journal of Petroleum Science and Engineering,2006,51:223-237.
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