Experimental device and method for simulating composite diapirism of different structural types

Abstract

An experimental device and method for simulating composite diapirism of different structural types. The device includes a flat platform skeleton system, an experimental simulation system, a drive system, an experimental auxiliary system and a control system; wherein, the flat platform skeleton system is used to support the entire experimental equipment, and the experimental simulation system is used to simulate research suitable for the actual needs of each work area. The driving system is used to drive each activity unit to complete the sandbox physical simulation experiment in line with the actual research area structural evolution simulation. The experimental auxiliary system includes lighting devices and photographing devices. The control system has a computer measurement and control module for Control the lighting on and off of the lighting device of the test bench, the photographing frequency of the photographing device, and the driving speed, time, direction and distance of each driving module in the driving system. The device and method can be used to carry out different inclination angles of the strata, and realize the sand box physical simulation experiment of multiple structural types such as gravity sliding structure, extensional structure and extrusion structure superimposed on bottom splitting structure.

Description

technical field [0001] The present invention relates to an experimental device and method applied in the research fields of petroleum geology and structural geology, in particular, relates to a method capable of tilting strata at different dip angles to realize gravity sliding structures, stretching structures, extrusion structures, etc. A sandbox physical simulation experiment device and method for superimposed bottom-splitting tectonic effects of various structural types. Background technique [0002] The plastic material in the deep crust migrates upwards and its tectonic effect on the overlying rock is called diapirism, and the structural deformation formed by diapirism is called diapirism. Diapir structures produced by diapir movement are widely developed in sedimentary basins and are important types of oil and gas traps. However, the evolution of basins is not formed in one stage but the product of multi-stage tectonic movements. Multi-stage tectonic movements combine...

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Problems solved by technology

[0004] Although diapir structures are widely developed in oil and gas-bearing basins in my country, there are the following problems in the field of simulation experiment equipment: ① In the prior art, a lot of research work has been done on diapir structures, but the experiments used for diapir structure simulation There are few devices, all of which are relatively simple and of a single type, making it difficult to meet the needs of existing research

The most prominent problem is that it is difficult to satisfy the physical simulation experiments of multi-deformation superimposed diapirism under complex structural conditions.

② It is difficult to complete the physical simulation of diapir structures in different diapir modes (fluid diapir + mechanical diapir) and diapir styles (single-point type, cross type) at the same time

③In addition, the diapir structure physical simulation experiment device in the prior art has a single function and cannot superimpose deformation; there is no single sandbox physical simulation experiment device that can realize multi-stage deformation and add pre-existing inclined strata, late superimposed diapir Structural Simulation Experimental Device

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