High pressure seal examining device and application method thereof

Abstract

The invention provides a high pressure seal examining device which comprises an oil suction pipe, a first cup rubber sleeve, a sealing flange plate, a fixed block and a linking sleeve, two transmission columns, two connecting rods, two limiting arc-shaped blocks, an outer sleeve, a transmission pipe and two limiting sleeve blocks. The transmission pipe is provided with two semi-circumferential spiral slots, two limiting slots are formed in the limiting sleeve block, the rotating transmission columns enter the spiral slots to drive the transmission pipe to rotate, the rotating limiting arc-shaped blocks enter into the limiting slot in one limiting sleeve block to rotate and slide out from the limiting slot on the other limiting sleeve block to fix the transmission pipe. The high pressure seal examining device also comprises a connecting pipe and an inner sleeve. The inner sleeve is provided with a first rinsing slot, and the outer sleeve is provided with a second rinsing slot. The highpressure seal examining device also comprises a rubber sleeve supporting rack. A second cup rubber sleeve is fixedly mounted on the rubber sleeve supporting rack. The high pressure seal examining device is simple in structure and relatively low in cost.

Description

technical field [0001] The invention relates to the technical field of high-pressure sealing inspection, in particular to a high-pressure sealing inspection device and a method for using the same. Background technique [0002] Operating procedures for wellhead inspection 1. After running the pressure test string, install the wellhead and fasten all the bolts in the wellhead. 2. Connect the ground pipeline and connect it with the 400-type cement truck, and fasten the joints of the pressure test pipeline. 3. The pipelines of the tanker and the cement truck are connected to ensure no water leakage. 4. Start the cement truck to pressurize, and when the pressure slowly rises to the specified pressure value of the pressure test, stop the cement truck and close the circulation gate. 5. Stabilize the voltage for 15 minutes, and the pressure drop is less than 0.5Mpa, which is qualified. 6. Open the circulation gate of the cement truck to release the pressure, remove the pressure t...

AI Technical Summary

Problems solved by technology

4. During the wellhead pressure test, the maximum pressure, pressure stabilization time or pressure drop must be recorded.

5. When the wellhead pressure test is performed, it must be carried out under the condition that the bolts of the wellhead are fastened intact.

However, in the traditional way, when flushing with multiple rubber cups and cups, multiple water pipes need to be connected, and most of them are controlled separately. Then, the structure of the entire water pipe is relatively complicated, occupying a large area, and the diameter of the wellhead of the oil well is small. , so that it is inconvenient to set up multiple water pipes in the oil well to supply multiple rubber tubes and leather bowls for flushing

In the traditional design, the structure is complex and the cost is high

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