A complex fracture state and sand plugging simulation device and method in downhole formation

Abstract

The invention provides a device and method for simulating complex fracture states and sand plugging in downhole formations. The device includes: a liquid distribution unit sequentially connected along the fluid flow direction, a first connecting pipeline, a power unit, a second connecting pipeline, a first storage unit, a near-wellbore distortion simulation unit, a second storage unit, a formation fracture simulation unit and The third storage unit, wherein, the liquid distribution unit can form the fluid used for simulation; the power unit can transfer the fluid to the first storage unit through the first and second connecting pipelines; the first storage unit can store the fluid; the near-well distortion simulation unit The fracture distortion near wellbore can be simulated; the second storage unit can store fluid; the formation fracture simulation unit can simulate formation fracture; the third storage unit can store fluid. The method includes performing a simulation using the apparatus described above. The beneficial effects of the present invention may include: being able to more accurately simulate the form of hydraulic fractures, to stimulate complex hydraulic fracture networks in reservoirs, and to be able to effectively evaluate near-wellbore distortion phenomena.

Description

technical field [0001] The invention relates to the field of petroleum simulation, in particular to a complex fracture state and sand plugging simulation device and method in an underground formation. Background technique [0002] Large-scale shale reservoir engineering simulation experiments can effectively guide shale development. At present, there are many shale reservoir stimulation simulation experiments, which are basically small-scale and cannot truly simulate the fracturing form of the reservoir. Usually, the outcrop is selected as the evaluation experiment; intelligent operation cannot be realized, and the operation is basically manual and the operation of equipment is cumbersome. There are relatively few large-scale simulation engineering experiments for shale fracturing, mainly simulating single and different bedding fractures / vertical fracture evaluation experiments, which cannot accurately describe the exact hydraulic fracture shape during shale fracturing, and ...

AI Technical Summary

Problems solved by technology

At present, there are many shale reservoir stimulation simulation experiments, which are basically small-scale and cannot truly simulate the fracturing form of the reservoir. Usually, the outcrop is selected as the evaluation experiment; intelligent operation cannot be realized, and the operation is basically manual and the equipment operation is cumbersome.

There are relatively few large-scale simulation engineering experiments for shale fracturing, mainly simulating single and different bedding fractures / vertical fracture evaluation experiments, which cannot accurately describe the exact hydraulic fracture shape during shale fracturing, and the conclusions obtained are limited. Certain deviation

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