地层破裂压力三维计算与显示方法
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摘要
精确的预测地层破裂压力不仅是钻井工程设计的基础,更是后期油气田经济高效开发的保障。提出一种地层破裂压力的三维计算与显示方法,在有限的勘探资料和已钻井资料前提下,确定使用更适应于工程实际的侧压力系数法计算单点的地层破裂压力,运用克里金插值方法将反演密度数据和反演层速度数据相结合,计算每一道的地层破裂压力,最终再次运用克里金插值技术得出三维破裂压力体,并且设计出了地层破裂压力显示软件,直观反映出三维地层破裂压力分布。以新疆玛湖凹陷的玛西勘探区域为例,根据编制的相应计算程序,得到了该区域的三维破裂压力空间分布特征,并进行三维显示。然后提取该区域上单井的破裂压力计算结果与实测值进行对比,此方法符合工程需求。
Accurate prediction of formation fracture pressure is not only the foundation of drilling engineering design,but also the guarantee in efficient development for later period of oil and gas field. A method of 3D calculation and display was proposed,under the premise of limited exploration data and drilled well information. Firstly,overburden pressure was calculated by density inversion data. Secondly,formation pore pressure was calculated by Seismic Interval Velocity inversion data. Finally,by using Kriging interpolation method to achieve three-dimensional formation fracture pressure,in addition,display software was disigned to reflect the distribution of three-dimensional formation fracture pressure directly. Maxi exploration region is taken for instance in Mahu exploration,spatial distribution characteristics of three-dimensional formation fracture pressure in this region was calculated and aehieved by the analogue computing program compiled. Then according to the different region and horizon,comparing the calculation results with the measured values of single-well fracture pressure gradient have been drilled in this region. This method effectively improves the calculation accuracy of three-dimensional formation fracture pressure in this region and provides an effective basis for the subsequent construction and development.
Accurate prediction of formation fracture pressure is not only the foundation of drilling engineering design,but also the guarantee in efficient development for later period of oil and gas field. A method of 3D calculation and display was proposed,under the premise of limited exploration data and drilled well information. Firstly,overburden pressure was calculated by density inversion data. Secondly,formation pore pressure was calculated by Seismic Interval Velocity inversion data. Finally,by using Kriging interpolation method to achieve three-dimensional formation fracture pressure,in addition,display software was disigned to reflect the distribution of three-dimensional formation fracture pressure directly. Maxi exploration region is taken for instance in Mahu exploration,spatial distribution characteristics of three-dimensional formation fracture pressure in this region was calculated and aehieved by the analogue computing program compiled. Then according to the different region and horizon,comparing the calculation results with the measured values of single-well fracture pressure gradient have been drilled in this region. This method effectively improves the calculation accuracy of three-dimensional formation fracture pressure in this region and provides an effective basis for the subsequent construction and development.
引文
1 Zhang J.Pore pressure prediction from well logs:Methods,modifications,and new approaches.Earth-Science Reviews,2011;108(1):50 —63
2 Steve H.Pre-drill overburden estimation.[S.l.]:[s.n.],1999
3 黄荣樽,庄锦江.一种新的地层破裂压力预测方法.石油钻采工艺,1986;8(3):1—3Huang Rongzun,Zhuang Jinjiang.A new method for formation fracture pressure prediction,Oil Drilling&Production Technology,1986;8(3):1—3
4 周拿云,杨兆中.地层破裂压力预测技术综述.重庆科技学院学报:自然科学版,2011;13(1):36—39Zhou Nayun,Yang Zhaozhong.Overview on pressure prediction of formation Fracture,13-1,Basin.Journal of Chongqing University of Science and Technology(Science&Technology Edition),2011,13(1):36 —39
5 Honghai F,Zhi Y,Rongyi J.An integrated application of reducing uncertainties for 3D pore pressure prediction:a case study,SPE130390,2010
6 樊洪海,邢树彬,何辉.二维地层孔隙压力预测方法及应用.石油钻探技术,2007;35(4):6—8Fan Honghai,Xing Shubin,He Hui.A method and the application of two-dimensional formation pressure prediction.Petroleum Drilling Techniques,2007;35(4):6—8
7 樊洪海.利用层速度预测砂泥岩地层孔隙压力单点算法模型.岩石力学与工程学报,2002;21(增):2037—2040Fan Honghai.Single point algorithm for pore pressure prediction of sand-shale formations using seismic interval velocity.Chinese Journal of Rock Mechanics and Engineering,2002;21(Supplement):2037—2040
8 姚逢昌甘利灯.地震反演的应用与限制.石油勘探与开发,2005;27(2):53—56Yao Fengchang,Gan Lideng,Application and restriction of seismic inversion.Petroleum Exploration and Development,2005;27(2):53 —56
9 Wartenberg D,Uchrin C.Estimating exposure using kriging:a simulation study.Environmental Health Perspectives,1991;94:75
10 刘敏莺黄文赛.基于Open GL的地形三维可视化.海洋测绘,2002;3;22(2):26—29Liu Minying,Huang Wensai The 3D terrain Visualization Based on Open GL,Hydrographic Surveying and Charting,2002;22(2):26 —29
11 高武俊张继贤张永红.基于Open GL的地形三维可视化研究.测绘学报,2002;(增刊):7—10Gao Wujun,Zhang Jixian,Zhang Jihong.A study on Open GL based3 D terrain visualization.Bulletin of Surveying and Mapping,2002;(Supplement):7—10
12 陈刚强,阿布力米提,白雷,等.准噶尔盆地玛湖凹陷东斜坡深层成藏领域研究.西南石油大学学报(自然科学版),2013;35(6):31—38Chen Gangqiang,Abumiliti,Bai Xue,et al.Petroleum accumulation field in the deep strata of the eastern slope area of the Mahu Sag,Junggar.Basin.Journal of Southwest Petroleum University(Science&Technology Edition),2013;35(6):31—38
2 Steve H.Pre-drill overburden estimation.[S.l.]:[s.n.],1999
3 黄荣樽,庄锦江.一种新的地层破裂压力预测方法.石油钻采工艺,1986;8(3):1—3Huang Rongzun,Zhuang Jinjiang.A new method for formation fracture pressure prediction,Oil Drilling&Production Technology,1986;8(3):1—3
4 周拿云,杨兆中.地层破裂压力预测技术综述.重庆科技学院学报:自然科学版,2011;13(1):36—39Zhou Nayun,Yang Zhaozhong.Overview on pressure prediction of formation Fracture,13-1,Basin.Journal of Chongqing University of Science and Technology(Science&Technology Edition),2011,13(1):36 —39
5 Honghai F,Zhi Y,Rongyi J.An integrated application of reducing uncertainties for 3D pore pressure prediction:a case study,SPE130390,2010
6 樊洪海,邢树彬,何辉.二维地层孔隙压力预测方法及应用.石油钻探技术,2007;35(4):6—8Fan Honghai,Xing Shubin,He Hui.A method and the application of two-dimensional formation pressure prediction.Petroleum Drilling Techniques,2007;35(4):6—8
7 樊洪海.利用层速度预测砂泥岩地层孔隙压力单点算法模型.岩石力学与工程学报,2002;21(增):2037—2040Fan Honghai.Single point algorithm for pore pressure prediction of sand-shale formations using seismic interval velocity.Chinese Journal of Rock Mechanics and Engineering,2002;21(Supplement):2037—2040
8 姚逢昌甘利灯.地震反演的应用与限制.石油勘探与开发,2005;27(2):53—56Yao Fengchang,Gan Lideng,Application and restriction of seismic inversion.Petroleum Exploration and Development,2005;27(2):53 —56
9 Wartenberg D,Uchrin C.Estimating exposure using kriging:a simulation study.Environmental Health Perspectives,1991;94:75
10 刘敏莺黄文赛.基于Open GL的地形三维可视化.海洋测绘,2002;3;22(2):26—29Liu Minying,Huang Wensai The 3D terrain Visualization Based on Open GL,Hydrographic Surveying and Charting,2002;22(2):26 —29
11 高武俊张继贤张永红.基于Open GL的地形三维可视化研究.测绘学报,2002;(增刊):7—10Gao Wujun,Zhang Jixian,Zhang Jihong.A study on Open GL based3 D terrain visualization.Bulletin of Surveying and Mapping,2002;(Supplement):7—10
12 陈刚强,阿布力米提,白雷,等.准噶尔盆地玛湖凹陷东斜坡深层成藏领域研究.西南石油大学学报(自然科学版),2013;35(6):31—38Chen Gangqiang,Abumiliti,Bai Xue,et al.Petroleum accumulation field in the deep strata of the eastern slope area of the Mahu Sag,Junggar.Basin.Journal of Southwest Petroleum University(Science&Technology Edition),2013;35(6):31—38
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