Pressure bearing detection device and method of one-way valve

Abstract

The invention relates to a pressure bearing capacity detection device of a one-way valve for a cement type float collar and float shoe. The device comprises a sealing head which is provided with a sealing end, an opening end and a side wall positioned between the sealing end and the opening end. The side wall is provided with a locating ring and a stopping block which can move along a radial direction. The device also comprises a sliding sleeve which is sleeved on the sealing head. The sliding sleeve comprises a sliding sleeve spring and a locating groove which is positioned on the inner wall of the sliding sleeve. The device still comprises a hollow body which is accommodated inside the inner cavity of the sealing head. The hollow body can accommodate the valve seat of the one-way valve, and the side wall of the body is provided with an accommodating groove. The device further comprises a testing mouth which is connected with the one-way valve so as to conduct a detection. The sliding sleeve can move between a first location and a second location in an axial direction. When the sliding sleeve lies in the first location, the stopping block moves outwardly into the locating groove in the radial direction and the body is allowed to move into the inner cavity of the sealing head along the axial direction. When the sliding sleeve lies in the second location, the stopping block is pressed inwardly into the accommodating groove by the inner wall of the sliding sleeve in the radial direction so that the movement of the body along the axial direction is limited.

Description

technical field [0001] The invention relates to a device and a method for detecting the pressure-bearing capacity of a one-way valve, and the one-way valve can be used especially in cement-type floating hoop floating shoes for cementing operations in oil fields. Background technique [0002] In oilfield exploitation, the pressure-bearing and sealing performance of cement-type floating hoop shoes is very important to ensure the smooth progress of cementing operations. The check valve is the core component of the cement type floating hoop shoe, and its pressure bearing capacity directly affects the performance of the product. Therefore, it is necessary to test the pressure bearing capacity of the check valve. [0003] The current detection method is to fix the one-way valve with cement in the casing of the cement-type floating hoop and the floating shoes, and then carry out integral pressure test on the finished floating hoop and floating shoes. Among them, one end of the sh...

AI Technical Summary

Problems solved by technology

However, since the one-way valve cannot be taken out from the casing after being fixed with cement, if the one-way valve fails during the pressure test, the entire set of floating hoops and floati

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