Abstract：This paper presents a new model for 3D overburden pressure estimation，which is based on single point algorithm hypothesis. In this model，the 3D seismic data is combined with drilled well information and geological stratification information，greatly improves the calculation precision of 3D overburden pressure field. This model consists of three steps：first，3D density volume is obtained by logging constrained seismic inversion；second，overburden pressure data is calculated from inversion density data point by point，on basis of single algorithm and spatial interpolation；finally，3D overburden pressure volume is rebuilt by spatial interpolation calculation. A computer program is developed，and a seismic zone of the Yinger depression in Jiudong basin is taken as a calculation example. Compared with the overburden pressure of drilled wells in this zone，the results proved the accuracy and applicability of this model.
樊洪海，张传进. 上覆岩层压力梯度合理计算及拟合方法[J]. 石油钻探技术，2002，30(6)：6-8.(FAN Honghai，ZHANG Chuanjin. Determination and regression of overburden pressure gradient[J]. Petroleum Drilling Techniques，2002，30(6)：6-8.(in Chinese))
[3]
薛亚东，高德利. 深部地层压力智能识别方法[J]. 岩石力学与工程学报，2003，22(4)：208-211.(XUE Yadong，GAO Deli. Intelligent recognition method of deep formation pore pressure[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(4)：208-211. (in Chinese))
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2011, Vol. 30 
