Pressure testing device and pressure testing method for rod pump wellhead facilities

Abstract

The present invention relates to a pressure test device and a pressure test method for the wellhead facilities of rod pump oil production wells, which can realize the wellhead facilities under low displacement during the process of pulling up the sucker rod, such as: wellhead cross, well sealing device, The wellhead pressure test of blowout pipeline and other components and devices can improve the working efficiency and reduce the labor intensity of employees. The pressure test device includes a pressure test sealing mechanism and a pipe rod connector. The pressure test sealing mechanism and the pipe rod connector are connected through a variable diameter joint. The sucker rod is connected to the oil pipe; the pressure test sealing mechanism is equipped with a cup and a tubing hanger, and a tightening cone and a force application pipe are installed between the tubing hanger and the cup, and the tension cone can move along the force application pipe 1. Expand the leather cup to seal the inner cavity of the downhole casing. It overcomes the problem that the existing technology cannot perform pressure test on the wellhead facilities in the process of lifting the sucker rod, effectively improves the operation timeliness, and reduces the hidden dangers of well control safety accidents.

Description

technical field [0001] The invention relates to a wellhead pressure test device and method for oil production wells in the petroleum industry, especially a pressure test device and a pressure test method for the wellhead facilities of oil production wells with rod pumps. Wellhead facilities, such as: wellhead sieves, well sealing devices, blowout pipelines and other components and devices for wellhead pressure testing, so as to achieve the purpose of improving operational efficiency and reducing labor intensity of employees. Background technique [0002] Since there is no special wellhead pressure test device for oil production wells with rod pumps in the petroleum industry, it is impossible to test the pressure of wellhead facilities with sucker rods in the well, because the sucker rods in the well cannot be suspended, and the annulus between the tubing and casing cannot be sealed , only after all the sucker rods are pulled out, can the pressure test vehicles be used to car...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a pressure test device and a pressure test method for the wellhead facilities of rod pump oil production wells, to overcome the problem that the existing technology cannot test the pressure of the wellhead facilities in the process of lifting the sucker rod, so as to improve the operating efficiency and reduce the pressure of the wellhead facilities. Operating costs, reducing the intensity of labor

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