地层条件对大庆致密油岩石力学动静态参数影响的实验研究
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- 英文论文题名：Experimental Study on the Influence of Formation Conditions on the Dynamic and Static Parameters in Rock Mechanics for Tight Oil Reservoir of Daqing
- 论文作者：顾明勇
- 英文论文作者：Gu Mingyong
- 年：2016
- 作者机构：大庆油田有限责任公司采油工程研究院;
- 论文关键词：致密油储层 ; 含水饱和度 ; 孔隙压力 ; 围压 ; 温度 ; 岩石力学性质
- 英文论文关键词：tight oil reservoir ; water saturation ; pore pressure ; confining pressure ; temperature ; rock mechanical property
- 会议召开时间：2016-12-01
- 会议录名称：《采油工程文集》2016年第4辑
- 英文会议录名称：Oil Production Engineering
- 语种：中文
- 分类号：TE311
- 学会代码：DQGY
- 学会名称：大庆油田有限责任公司采油工程研究院
- 页数：6
- 文件大小：1964k
- 原文格式：D
摘要
岩石力学性质对于钻完井设计、压裂设计及施工等均起着极为重要的影响。以大庆致密油储层为研究对象,采用高温高压岩石力学试验系统,开展不同地层条件下的岩石力学三轴实验,研究含水饱和度、孔隙压力、围压和温度这4个地层条件对于岩石动静态弹性模量及泊松比的影响。实验结果表明:含水饱和度、围压是影响静态弹性模量的主要因素,静态弹性模量随含水饱和度的增大而减小,随围压的增大而增大;孔隙压力和围压是影响动态弹性模量的主要因素,动态弹性模量随孔隙压力的增大而减小,随围压的增大而增大;围压和温度是影响静态泊松比的主要因素,静态泊松比随围压的增大而减小,随温度的增大而增大;孔隙压力和围压是影响动态泊松比的主要因素,动态泊松比随孔隙压力的增大而减小,随围压的增大而增大。实验明确了含水饱和度、孔隙压力、围压和温度对于岩石动静态弹性模量及泊松比的影响规律,为岩石力学性质的研究提供了技术支持和保障。
Rock mechanical properties play vital roles in the drilling,completion and fracturing designs as well as construction,etc.Taking the tight oil reservoir of Daqing as the research object,the three-axis experiment of rock mechanics under different formation conditions has been conducted by using HTHP rock mechanics test system.The effect of four formation factors as water saturation,pore pressure,confining pressure and temperature on the dynamic and static elastic modulus and Poisson's ratio of rock was researched.Experimental results show that water saturation and confining pressure are the main factors affecting the static elastic modulus,which decreases along with the increase of water saturation,while increases along with the increase of confining pressure.Pore pressure and confining pressure are the main factors affecting the dynamic elastic modulus,which decreases along with the increase of pore pressure,while increases along with the increase of confining pressure.Confining pressure and temperature are the main factors affecting the static Poisson's ratio,which decreases along with the increase of confining pressure,while increases along with the increase of temperature.Pore pressure and confining pressure are the main factors affecting the dynamic Poisson's ratio,which decreases along with the increase of pore pressure,while increases along with the increase of confining pressure.The experiments have indicated the influence regularity of four formation factors mentioned above on the dynamic and static elastic modulus and Poisson's ratio of rocks,which can provide the technical support and guarantee for the research of rock mechanical properties.
Rock mechanical properties play vital roles in the drilling,completion and fracturing designs as well as construction,etc.Taking the tight oil reservoir of Daqing as the research object,the three-axis experiment of rock mechanics under different formation conditions has been conducted by using HTHP rock mechanics test system.The effect of four formation factors as water saturation,pore pressure,confining pressure and temperature on the dynamic and static elastic modulus and Poisson's ratio of rock was researched.Experimental results show that water saturation and confining pressure are the main factors affecting the static elastic modulus,which decreases along with the increase of water saturation,while increases along with the increase of confining pressure.Pore pressure and confining pressure are the main factors affecting the dynamic elastic modulus,which decreases along with the increase of pore pressure,while increases along with the increase of confining pressure.Confining pressure and temperature are the main factors affecting the static Poisson's ratio,which decreases along with the increase of confining pressure,while increases along with the increase of temperature.Pore pressure and confining pressure are the main factors affecting the dynamic Poisson's ratio,which decreases along with the increase of pore pressure,while increases along with the increase of confining pressure.The experiments have indicated the influence regularity of four formation factors mentioned above on the dynamic and static elastic modulus and Poisson's ratio of rocks,which can provide the technical support and guarantee for the research of rock mechanical properties.
引文
[1]那志强.水平井压裂起裂机理及裂缝延伸模型研究[D].青岛:中国石油大学(华东),2009.
[2]张平,潘林华,张士诚.大庆油田火山岩储层岩石力学特性[J].大庆石油地质与开发,2011,30(1):118-122.
[3]时贤,程远方,蒋恕.页岩微观结构及岩石力学特征实验研究[J].岩石力学与工程学报,2014,33(2):3439-3445.
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[5]周文,高雅琴,单钰铭,等.川西新场气田沙二段致密砂岩储层岩石力学性质[J].天然气工业,2008,28(3):24-37.
[6]刘荣和,冯文光,龙玲,等.致密碳酸盐岩石力学与声学实验研究[J].大庆石油地质与开发,2008,27(6):131-134.
[7]路保平,张传进,鲍洪志.油气开发过程中岩石力学性质变化规律实验研究[J].岩石力学与工程学报,2000,19(增):878-881.
[8]孟召平,彭苏萍,傅继彤.含煤岩系岩石力学性质控制因素探讨[J].岩石力学与工程学报,2002,21(1):102-106.
[9]岳喜伟,戴俊生,王珂.岩石力学参数对裂缝发育程度的影响[J].地质力学学报,2014(4):372-378.
[10]Starfield A M,Cundall P A.Towards a methodology for rock mechanics modeling[J].International Journal of Rock Mechanics and Mining Sciences&Geomechanics Abstracts,1988,25(33):99-106.
[2]张平,潘林华,张士诚.大庆油田火山岩储层岩石力学特性[J].大庆石油地质与开发,2011,30(1):118-122.
[3]时贤,程远方,蒋恕.页岩微观结构及岩石力学特征实验研究[J].岩石力学与工程学报,2014,33(2):3439-3445.
[4]秦朝.三轴围压条件下岩石力学性质的实验研究[D].成都:西南石油大学,2014.
[5]周文,高雅琴,单钰铭,等.川西新场气田沙二段致密砂岩储层岩石力学性质[J].天然气工业,2008,28(3):24-37.
[6]刘荣和,冯文光,龙玲,等.致密碳酸盐岩石力学与声学实验研究[J].大庆石油地质与开发,2008,27(6):131-134.
[7]路保平,张传进,鲍洪志.油气开发过程中岩石力学性质变化规律实验研究[J].岩石力学与工程学报,2000,19(增):878-881.
[8]孟召平,彭苏萍,傅继彤.含煤岩系岩石力学性质控制因素探讨[J].岩石力学与工程学报,2002,21(1):102-106.
[9]岳喜伟,戴俊生,王珂.岩石力学参数对裂缝发育程度的影响[J].地质力学学报,2014(4):372-378.
[10]Starfield A M,Cundall P A.Towards a methodology for rock mechanics modeling[J].International Journal of Rock Mechanics and Mining Sciences&Geomechanics Abstracts,1988,25(33):99-106.