Pressure delay detonation device tester for simulating underground environment

Abstract

The invention provides a pressure delay detonation device tester for simulating an underground environment. The pressure delay detonation device tester is provided with a hydraulic pump station, the hydraulic pump station is connected with a to-be-tested pressure delay detonation device for removing a detonator through a connecting pipeline assembly, and the connecting pipeline assembly is provided with a pressure gauge; the pressure delay detonation device is immersed in a high-temperature simulation oil pool, and the oil pool is provided with a temperature control heating device; the hydraulic pump station is used for pressurizing the pressure delay detonation device, and the oil pool and the temperature control heating device are used for simulating the underground environment; and when a shear pin in the to-be-tested pressure delay detonation device is cut off by axial pressure, the pressure value before the pressure value of the pressure gauge is instantaneously and suddenly reduced is the pressure value of the to-be-tested pressure delay detonation device when the to-be-tested pressure delay detonation device is actually used underground. According to the pressure delay detonation device tester for simulating the underground environment, the real working pressure values of the pressure delay detonation device at different depths in a well can be accurately tested on the ground, and the detector is simple in structure, convenient to operate, low in cost and easy to popularize.

Description

technical field [0001] The invention belongs to the technical field of shear force testing of mechanical parts of blasting equipment for physical measurement and testing of oil and gas wells, and in particular relates to a pressure delay initiation device tester for simulating an underground environment. Background technique [0002] The pressure delay initiation device of oil and gas well blasting equipment is widely used in perforating operations. The pressure delay detonation technology is a relatively advanced delay detonation technology in China at present. This technology is controlled by pressure. When the pressure value exceeds the design value, the shear pin is cut off to start the delay system. The wellbore pressure pushes the firing pin to hit the detonator. , to realize the detonation of the perforating gun. Among them, the pressure delay detonation device adopts a mechanical hydraulic structure as a whole, which has the advantages of high stability, safety and ...

AI Technical Summary

Problems solved by technology

However, through more than one year of ground detection and actual application in the downhole field, it is found that there are always some deviations between the actual detonation pressure value in the downhole and the design pressure value of the ground detection, and the deviation is small when used in shallow wells. The reason is that there is a difference between the maximum shear value of the shear pin on the surface and the maximum shear value at high temperature downhole, and the difference increases with the increase of well depth temperature

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