三维上覆岩层压力计算方法研究

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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.

Key words： rock mechanics 3D overburden pressure seismic inversion three-dimensional density volume spatial interpolation Kriging interpolation

Received: 26 September 2010

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http://www.rockmech.org/EN/Y2011/V30/IS2/3878

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