【摘要】 VSP技术是一种地震速度观测技术。利用密度曲线和合适的子波对VSP资料进行反演,计算出精确的地层速度,从而得到地层压力是一种行之有效的方法。地层压力是钻井工程与施工设计的重要依据,可以利用地层压力确定套管程序、水泥浆密度及钻井液密度。垂直地震剖面VSP是一种通过在沿井孔布置检波器来接收有效波的地震观测方法,具有反射振幅强、信噪比高、波场信息丰富的特点。本文通过对VSP资料进行处理,并且结合压力预测基本原理计算出地层压力,具有很高的可靠性和实效性。更多还原

【Abstract】 VSP technology is a kind of seismic velocity observation technology.It is available that VSP data are inversed with density curve and suitable wavelet to work out accurate formation velocity,thereby to achieve formation pressure.Formation pressure,which can be used to determine casing programme,cement paste density and drilling fluid density,is an important foundation for drilling engineering and working design.Vertical seismic profile VSP is a seismic observation method that the detector is placed along the borehole to receive effective waves which has characteristics of strong reflection amplitude,high signal-to-noise ratio and rich wave field information.In the paper,VSP data are processed to calculate the formation pressure with combination of pressure prediction principle.It has high reliability and effectiveness.更多还原