Method and device for landform restoration

Abstract

Embodiments of the present invention provide a landform restoration method and device. The method utilizes seismic horizon interpretation data, selects the overlying layer and the underlying layer, and calculates the distance between each layer and the surface of the ancient buried hill to obtain the residual and The mirror surface of the underlying thickness trend surface, superimposing the mirror surface trend surface and the residual can determine the structural trend and micro-topography of the ancient buried hill surface, thereby completing the restoration of the landform. It is suitable for geomorphology in areas where the upper and lower marker layers on the ancient buried hill surface are not obvious, the seismic reflection structure is not obvious, the overlying layer on the ancient buried hill surface is formed by carbonate rock, and the geological horizon that cannot be determined to belong to the maximum sea flooding surface, etc. Restoration can obtain accurate landforms that can reflect structural trends and micro-landforms.

Description

technical field [0001] The invention relates to the technical field of landform restoration, in particular to a landform restoration method and device. Background technique [0002] The reservoir medium space of carbonate reservoirs is a karst fracture-cave system, and the necessary conditions for the formation of a karst fracture-cavity system are: soluble rock, flowing water and structural fractures. Soluble rocks and structural fractures are the basis of karstification, and flowing water is the dynamic condition of karstification. It can be seen that the formation of karst fracture-cave systems is closely related to hydrodynamic conditions. Restoring the paleokarst landform can restore the hydrodynamic conditions of the paleokarst watershed, so the paleokarst landform has a controlling effect on the formation of the karst fracture-cavity system. Therefore, the restoration and characterization of paleokarst landforms play a substantial role in guiding the efficient develo...

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Problems solved by technology

[0005] The embodiment of the present invention provides a landform restoration method and device, which are used to solve the problem that the upper and lower marker layers on the surface of the ancient buried hill are not obvious, the seismic reflection structure is not obvious, and the overlying layer on the surface of the ancient buried hill is constructed of carbonate rock, and it is impossible to determine the maximum The problem that accurate landform restoration cannot be performed under conditions such as sea flooding

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