三维岩石力学参数场随机模拟预测方法及应用
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摘要
以提高油田采油速度为目的的人工压裂裂缝施工改造,对当前广泛应用于求取岩石力学参数的常规测井资料法提出了更高的要求。提出三维岩石力学参数场随机模拟预测的方法,即以已知有限的常规测井资料计算出来的岩石力学参数曲线作为硬数据输入,以已知地震属性数据体及泥页岩水化和岩石环境参数数据作为软数据约束,选择序贯高斯模拟方法,随机模拟得到动态规律变化的岩石力学参数的三维空间数据场,然后由岩石力学参数的三维空间数据场预测空间任一位置的岩石力学参数在井上的测井响应,并把该反映动态规律变化的测井响应按照油田勘探开发的要求输出成特定格式,供生产和工程上使用。该方法为当前岩石力学参数的求取开辟了一条全新的途径,对勘探开发上制定完善的钻井、完井与油气开发方案和技术措施提供重要的指导作用。
Presently,the methods of conventional log data are widely used to calculate rock mechanics parameters and are strongly required by fissure working rebuilding of artificial fracturing with the purpose of increasing oil production rate in oil fields.The method of prediction on stochastical simulating 3D parameter field of rock mechanics is brought forward in this paper.Namely,rock mechanics parameters' curve obtained by known and limited conventional log materials is took as inputs of hard data;and seismic attribute data body,hydrating of mud shale and rock environmental parameters data is took as constraint of soft data.By simulating stochastically through optimizing algorithm of Sequential Gauss Simulation,dynamical data field of rock mechanics parameter of three-dimensional space are gotten,then log response of rock mechanics parameters in position of any point in space is predicted.The special format of the log responses to refect the dynamic change rule is presented for use of producing and engineering according to demand of exploration and development.Sequentially,the method provides a significant guiding role to establish perfect drilling,well completion,oil gas development project and technical measures in exploration and development.
Presently,the methods of conventional log data are widely used to calculate rock mechanics parameters and are strongly required by fissure working rebuilding of artificial fracturing with the purpose of increasing oil production rate in oil fields.The method of prediction on stochastical simulating 3D parameter field of rock mechanics is brought forward in this paper.Namely,rock mechanics parameters' curve obtained by known and limited conventional log materials is took as inputs of hard data;and seismic attribute data body,hydrating of mud shale and rock environmental parameters data is took as constraint of soft data.By simulating stochastically through optimizing algorithm of Sequential Gauss Simulation,dynamical data field of rock mechanics parameter of three-dimensional space are gotten,then log response of rock mechanics parameters in position of any point in space is predicted.The special format of the log responses to refect the dynamic change rule is presented for use of producing and engineering according to demand of exploration and development.Sequentially,the method provides a significant guiding role to establish perfect drilling,well completion,oil gas development project and technical measures in exploration and development.
引文
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[8]王晓平,王训练,凌云,等.井-震标定参数分析及薄层标定——以塔里木盆地哈德四油田为例[J].现代地质,2005,19(2):295-302.
[9]李军,郝天珧,刘建,等.基于不同邻域系统的马尔可夫链模型的储层岩相随机模拟[J].现代地质,2006,20(4):621-627.
[10]王冠贵.用全波测井资料确定碳酸盐岩地层破裂压力值的分析[J].地球物理测井,1990,14(3):178-188.
[2]刘之的,夏宏泉,陈平.利用测井资料计算碳酸盐岩三个地层压力[J].钻采工艺,2005,28(1):18-21.
[3]Tang X M,Cheng N Y,Cheng A.Identifying and estimatingformation stress from borehole monopole and cross-dipole acous-tic measurement[R].SPWLA40th,1999.
[4]邹存友,李治平,王树平,等.利用测井资料求取地应力及压裂控制研究[J].新疆石油天然气,2006,2(4):17-20.
[5]李志明,张金珠.地应力与油气勘探开发[M].北京:石油工业出版社,1997:22-25.
[6]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.
[7]赵军,祁兴中,夏宏泉,等.测井资料在碳酸盐岩洞—裂缝型储层产能评价中的应用[J].现代地质,2003,17(1):99-104.
[8]王晓平,王训练,凌云,等.井-震标定参数分析及薄层标定——以塔里木盆地哈德四油田为例[J].现代地质,2005,19(2):295-302.
[9]李军,郝天珧,刘建,等.基于不同邻域系统的马尔可夫链模型的储层岩相随机模拟[J].现代地质,2006,20(4):621-627.
[10]王冠贵.用全波测井资料确定碳酸盐岩地层破裂压力值的分析[J].地球物理测井,1990,14(3):178-188.
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