On-line washing process of work-over operation oil pipe and oil pumping rod

Abstract

The invention discloses an on-line washing process of a work-over operation oil pipe and an oil pumping rod. The on-line washing process comprises the following steps of (1) carrying out on-line washing of the oil pumping rod, i.e., enabling an environment-friendly box to supply water to a steam heat source device, using the steam heat source device to heat the water and then supplying the water to a washing device, employing the washing device to disperse the water, and then enabling the water to flow downwards along an annular space defined by the oil pumping rod and the oil pipe, thereby completing the washing of the oil pumping rod; and (2) carrying out on-line washing of the oil pipe, i.e., taking down the washing device after finishing washing the oil pumping rod, introducing an oil pipe washing device with an liner pipe and connecting the oil pipe washing device to a semi-sealed well plugging device, using the environment-friendly box to supply water to the steam heat source device, employing the steam heat source device to heat the water and then supplying the water to the washing device, using the washing device to disperse the water, and then enabling the water to flow downwards along an annular space defined by the liner pipe and the oil pipe, thereby completing the washing of the oil pipe. With the adoption of the on-line washing process, the oil dirt after washing is introduced into the environment-friendly box and prevented from falling to the ground, so that the pollution to the environment is avoided.

Description

Technical field: [0001] The invention relates to the technical field of oil field workover operation tubing and sucker rod cleaning, in particular to an online cleaning process for well workover operation tubing and sucker rods. Background technique: [0002] At present, the workover operation site adopts the method of stabbing and washing by boiler trucks, and lays anti-seepage cloth on the well site, and washes oil from the tubing onto the anti-seepage cloth, causing pollution to the environment; 100-150m 3 The method of washing the well with clean water not only wastes a lot of resources, but also easily causes damage to the formation and affects crude oil production. And the polluted anti-seepage cloth cannot be processed. Invention content: [0003] In order to solve the above-mentioned technical problems, the present invention proposes an on-line cleaning process for tubing and sucker rods in workover operations. By implementing this process, the outer wall of the t...

AI Technical Summary

Problems solved by technology

[0002] At present, the workover operation site adopts the method of stabbing and washing by boiler trucks, and lays anti-seepage cloth on the well site, and washes oil from the tubing onto the anti-seepage cloth, causing pollution to the environment; 100-150m 3 The method of washing the well with clean water not only wastes a lot of resources, but also easily causes damage to the formation and affects crude oil production

And the contaminated impermeable cloth cannot be treated

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