Method and system for establishing three-dimensional geomechanical field of ultra-deep carbonate reservoir

Abstract

The present invention provides a method and system for establishing a three-dimensional geomechanical field of an ultra-deep carbonate reservoir. Calculate the layer velocity along the horizon data, determine the corresponding seismic average velocity according to the layer velocity, and obtain the seismic average velocity field; according to the coordinate range of the seismic work area survey network, perform three-dimensional data interpolation on the seismic average velocity field through seismic interpretation horizon control, Obtain the seismic three-dimensional velocity field; determine the physical parameters of lithology according to the three-dimensional seismic velocity field, and then calculate the formation pressure and geological stress in the seismic work area, and construct the three-dimensional geomechanical field. Using the three-dimensional velocity field obtained by combining seismic data and logging data to determine the physical parameters of lithology makes the formation pressure and geological stress obtained based on this more accurate, and can construct a more accurate three-dimensional geomechanical field.

Description

technical field [0001] The invention belongs to the field of geophysical exploration, and in particular relates to a method and system for establishing a three-dimensional geomechanical field of an ultra-deep carbonate reservoir. Background technique [0002] Accurately establishing a three-dimensional geomechanical field is the basis of drilling engineering design and construction, and is an indispensable key data for determining the drilling well structure, drilling fluid density, drilling control and completion processes. Only by accurately grasping the geomechanical field parameters can we take targeted oil and gas layer protection technical measures, and it plays an important role in ensuring the safety of drilling construction and reducing operational risks. [0003] In the prior art, people usually only calculate the parameters of the geomechanical field based on the acoustic logging data and density logging data in the geophysical logging data. There is a gap in the ...

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a method and system for establishing a three-dimensional geomechanical field in an ultra-deep carbonate reservoir to overcome the relatively low accuracy of the geomechanical field established by the existing method for establishing the geomechanical field. poor defect

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