塔里木盆地定向井地层三压力钻前预测研究
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摘要
随着塔里木盆地定向井钻井不断增多,针对定向井钻前沿井眼轨迹的三压力(孔隙压力、坍塌压力、破裂压力)预测的需求日益迫切。从井壁稳定的力学机理出发,分析定向井井周应力分布规律,建立定向井井壁稳定力学模型,利用地震、测井联合的反演技术构建定向井井轨迹上的纵波、横波、密度等岩石物理信息,为定向井开钻前提供地层三压力预测剖面,确定安全钻井液密度窗口,为钻井设计提供参考依据。
With the increase of directional wells in Tarim Basin, the demand for predicting the three pressures(i.e. pore pressure,collapse pressure and fracture pressure) along the wellbore trajectory before drilling the directional well becomes more and more urgent. The stress distribution rule around the directional well is analyzed, and a mechanical model for well wall stabilizing is established based on the mechanical principle for stabilizing the borehole wall. The physical information of the rock such as longitudinal wave, transverse wave and density along the directional well trajectory are obtained by using the seism-logging integration inversion technology, which can provide reference for the prediction of three pressures, the determination of the safe drilling fluid density range and well-drilling design before drilling.
With the increase of directional wells in Tarim Basin, the demand for predicting the three pressures(i.e. pore pressure,collapse pressure and fracture pressure) along the wellbore trajectory before drilling the directional well becomes more and more urgent. The stress distribution rule around the directional well is analyzed, and a mechanical model for well wall stabilizing is established based on the mechanical principle for stabilizing the borehole wall. The physical information of the rock such as longitudinal wave, transverse wave and density along the directional well trajectory are obtained by using the seism-logging integration inversion technology, which can provide reference for the prediction of three pressures, the determination of the safe drilling fluid density range and well-drilling design before drilling.
引文
[1]刘向君,罗平亚,孟英峰.地应力场对井眼轨迹设计及稳定性的影响研究[J].天然气工业,2004,24(9):57-59.
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[4]钟敬敏,齐从丽,杨志彬.定向井安全钻井液密度窗口测井计算方法[J].新疆石油天然气,2006(3):40-47.
[5]吴大奎,李亚林,伍志明,等.地震、测井资料联合反演的神经网络算法研究[J].天然气工业,2004,24(3):55-57.
[6]张明振,印兴耀,谭明友,等.对测井约束地震波阻抗反演的理解与应用[J].石油地球物理勘探,2007,42(6):699-702.
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[9]吴超,陈勉,金衍.利用地震反演技术钻前预测井壁稳定性[J].石油钻采工艺,2006,28(2):18-20.
[10]刘向君,罗平亚.测井在井壁稳定性研究中的应用及发展[J].天然气工业,1999,19(6):33-35.
[11]苏义脑,刘岩生.科学探索井地层压力计算[J].石油学报,2001,22(1):78-82.
[12]刘之的,夏宏泉.地层坍塌压力的测井预测研究[J].天然气工业,2004,24(1):57-59.
[2]金衍,陈勉,柳贡慧,等.大位移井的井壁稳定力学分析[J].地质力学学报,1999,5(1):4-11.
[3]周长江,刘向君,张卓,等.水平气井井壁稳定性研究[J].天然气工业,2006,26(8):81-89.
[4]钟敬敏,齐从丽,杨志彬.定向井安全钻井液密度窗口测井计算方法[J].新疆石油天然气,2006(3):40-47.
[5]吴大奎,李亚林,伍志明,等.地震、测井资料联合反演的神经网络算法研究[J].天然气工业,2004,24(3):55-57.
[6]张明振,印兴耀,谭明友,等.对测井约束地震波阻抗反演的理解与应用[J].石油地球物理勘探,2007,42(6):699-702.
[7]金衍,陈勉.利用地震记录钻前预测井壁稳定性研究[J].石油学报,2004,25(1):89-92.
[8]冷洪涛,翟勇,任瑞莲.综合应用测井资料分析现今地应力方向[J].内蒙古石油化工,2008(19):127-129.
[9]吴超,陈勉,金衍.利用地震反演技术钻前预测井壁稳定性[J].石油钻采工艺,2006,28(2):18-20.
[10]刘向君,罗平亚.测井在井壁稳定性研究中的应用及发展[J].天然气工业,1999,19(6):33-35.
[11]苏义脑,刘岩生.科学探索井地层压力计算[J].石油学报,2001,22(1):78-82.
[12]刘之的,夏宏泉.地层坍塌压力的测井预测研究[J].天然气工业,2004,24(1):57-59.
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