High-efficiency maintenance device for oil pipe

Abstract

The invention discloses a high-efficiency maintenance device for an oil pipe. The high-efficiency maintenance device for the oil pipe comprises a booster pump, a hose and a spray head, a flushing spray orifice set is arranged on the front side portion of the spray head, a rear thrust spray orifice set is arranged on the rear side portion of the spray head, the booster pump compresses water, the compressed water flows to the spray head through the hose, the compressed water is sprayed through the flushing spray orifice set of the spray head to the oblique front portion to flush the inner wall of the maintained oil pipe, the compressed water is further sprayed through the rear thrust spray orifice set to the oblique rear portion to the inner wall of the maintained oil pipe to drive the spray head to move forward in the maintained oil pipe. The flushing spray orifice set is composed of four spray orifices with an inclined angle of 45 degrees, and the rear thrust spray orifice set is composed of six spray orifices with an inclined angle of 60 degrees. By means of the high-efficiency maintenance device for the oil pipe, high-efficiency maintenance can be rapidly conducted on a high-temperature, high-pressure and air-tightness oil pipe pulled out on site, and the requirements for making the oil pipe placed into a well again can be met; on-site operation time is saved, the workload of on-site staff is reduced, and therefore it is guaranteed that follow-up operations can be completed smoothly.

Description

technical field [0001] The invention relates to a maintenance device for temporarily pulling out oil pipes for offshore maintenance in the technical field of oil and gas drilling, completion and testing, in particular to a maintenance device for high-temperature and high-pressure air-tight oil pipes. Background technique [0002] At present, gas-sealed tubing is used in high-temperature and high-pressure well completion and testing in the offshore oil field. During operation, the tubing may be pulled out and rerun, which requires on-site maintenance of the pulled-out tubing to ensure the state of the gas-sealed tubing well before re-entering the well. The mud used in high-temperature and high-pressure wells has a high specific gravity, and there are relatively many weighting materials in the mud. There are debris on the inner wall of the oil pipe that has been pulled out. Before the oil pipe is re-running, the debris on the inner wall has been agglomerated. The traditional m...

AI Technical Summary

Problems solved by technology

The mud used in high-temperature and high-pressure wells has a high specific gravity, and there are relatively many weighting materials in the mud. There are debris on the inner wall of the oil pipe that has been pulled out. Before the oil pipe is re-running, the debris on the inner wall has agglomerated. , poor effect, heavy workload

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