Physical simulation and calibration device and method for formation pressure testing

Abstract

The invention discloses a physical simulation and calibration device and method for formation pressure testing. The physical simulation and calibration device comprises a rock core clamper and furthercomprises a confining pressure simulation module, a formation pressure simulation module, an annulus pressure simulation module, a suction system, a pushing force simulation module and a driving control system; the rock core clamper is internally provided with a rock core, the pushing force simulation module is provided with a thrust rod, and the thrust rod penetrates through the cavity wall of one side of the rock core clamper; the front end of the thrust rod is provided with a simulation probe, and the suction system is connected to the thrust rod; and the confining pressure simulation module, the formation pressure simulation module, the annulus pressure simulation module, the pushing force simulation module and the suction system are all connected with the driving control system. Thephysical simulation and calibration device has the beneficial effects that the physical simulation and calibration device can simulate the physical environment of the formation pressure testing, physical simulation of formation pressure testing is achieved, a formation pressure tester can be corrected and calibrated, and the formation pressure testing ability and control precision are improved.

Description

technical field [0001] The invention relates to the technical field of formation pressure measuring instruments while drilling in the field of exploration and development of oil and gas resources, in particular to a physical simulation and calibration device and method for formation pressure testing. Background technique [0002] Formation pressure refers to the pressure of fluid (oil, gas, water) in formation pores, also known as formation pressure. For deep exploration, oil and gas extraction, geothermal development, CO 2 Formation pressure is one of the important basic parameters for projects involving deep well drilling such as geological storage and geological disposal of nuclear waste. It is of great significance to accurately predict and detect formation pressure. Formation pressure usually increases linearly with depth. If it increases with hydrostatic pressure gradient, it is normal pressure. If it is lower than normal pressure gradient, it is abnormally low pressu...

AI Technical Summary

Problems solved by technology

However, there are still few physical simulation experiments and calibration researches for formation pressure testing. The existing experimental devices are not accurate enough when interpreting and calibrating other dynamic parameters such as formation permeability and mobility. , confining pressure and wellbore pressure control accuracy is not enough, and there is no report on the physical model experimental device under the condition of high formation pressure

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