公开(公告)号：US20040141414A1

公开(公告)日：2004-07-22

申请号：US10755198

申请日：2004-01-09

Applicant: ConocoPhillips Company

Inventor： Alan Royce Huffman ,  Ernest C. Onyia ,  Richard Wayne Lahann ,  David W. Bell ,  Robert Lankston

IPC: G01V001/38

CPC classification number: G01V1/306 ,  G01V1/284 ,  G01V1/32 ,  G01V2210/6248

Abstract: A method of determination of fluid pressures in a subsurface region of the earth uses seismic velocities and calibrations relating the seismic velocities to the effective stress on the subsurface sediments. The seismic velocities may be keyed to defined seismic horizons and may be obtained from many methods, including velocity spectra, post-stack inversion, pre-stack inversion, VSP or tomography. Overburden stresses may be obtained from density logs, relations between density and velocity, or from inversion of potential fields data. The seismic data may be P-P, P-S, or S-S data. The calibrations may be predetermined or may be derived from well information including well logs and well pressure measurements. The calibrations may also include the effect of unloading. The determined pressures may be used in the analysis of fluid flow in reservoirs, basin and prospect modeling and in fault integrity analysis.

Abstract translation: 确定地球表面地层流体压力的方法使用地震速度和校准，将地震速度与地下沉积物的有效应力相关联。 地震速度可以与定义的地震层相关联，并且可以从许多方法获得，包括速度谱，叠后反转，叠前反转，VSP或层析成像。 覆盖层应力可以从密度测井，密度和速度之间的关系，或从潜在场数据的反演获得。 地震数据可以是P-P，P-S或S-S数据。 校准可以是预定的，或者可以从包括测井和井压测量的井信息导出。 校准也可以包括卸载的效果。 确定的压力可用于分析储层，盆地和潜在建模中的流体流动以及断层完整性分析。