CN212027748U

CN212027748U - Oil-water well downhole pipe column washing device

Info

Publication number: CN212027748U
Application number: CN202020687316.3U
Authority: CN
Inventors: 闫国栋; 姜玉峰; 孙政刚
Original assignee: Chaosheng Tianjin Petroleum Technology Co ltd
Current assignee: Chaosheng Tianjin Petroleum Technology Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-11-27
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses an oil-water well tubular column washing unit in pit, include: wash pipe and flush tank, the wash pipe is connected with the leak protection union coupling, leak protection union coupling mud umbrella, the flush tank is installed on the wash pipe, inside washing unit and the scraping device of being equipped with of flush tank, washing unit includes annular water pipe and shower nozzle, annular water pipe is located the flush tank to surround the wash pipe setting, the shower nozzle is installed at the flush pipe inboard, and shower nozzle intercommunication annular water pipe, and the flush tank outside is equipped with the water inlet, water inlet intercommunication annular water pipe, scraping device includes electric putter and doctor-bar, electric putter passes through the telescopic link and connects the doctor-bar, telescopic link and doctor-bar swing joint, the doctor-bar is the arc shape. The utility model discloses can strike off the impurity on the pipe wall with the doctor-bar earlier, then reuse water pressure washes, makes the washing effect better, and efficiency is higher.

Description

Oil-water well downhole pipe column washing device

Technical Field

The utility model relates to an oil-water well tubular column technical field in the pit specifically is an oil-water well tubular column washing unit in the pit.

Background

Most oil fields in China are formed in land phase sedimentary basins, the oil reservoir geological structure is complex, and after the oil well is completed, the formation energy, the well conditions and the physical properties of produced liquid are various. When crude oil is produced, if the self energy of an oil well can not lift the crude oil in a shaft to the ground, artificial lifting is needed by adopting a mechanical oil production-based mode. The production string is an integral part of the mechanical oil production system, is located in the wellbore, and functions to transfer energy from the surface to the crude oil in the wellbore and lift it to the surface. The oil production pipe is divided into two categories, namely a common crude oil production pipe and a thick oil production pipe.

In the process of lifting and lowering a pipe string in oil-water well operation in the petroleum industry, crude oil in a stratum flows into a shaft along pores and is attached to the surface of a downhole pipe string. When the pipe string is lifted out of the well, in order to prevent crude oil from dripping and causing environmental pollution, the design height of the leakage-proof pipe is determined within a proper range and the diameter of the mud umbrella is increased. In order to protect the environment of a construction site, construction personnel are required to clean crude oil on the wall of the lifted oil pipe at a wellhead when necessary. But not only has low working efficiency and incomplete wiping, but also has large operation burden of workers and potential safety hazard.

Chinese patent publication No. CN209025650U discloses a flushing device for an oil-water well downhole string, which forms a high-pressure flushing device capable of circulating flushing liquid at the operation well head of the oil-water well, and after the downhole string is lifted out of the well head, the flushing operation for the lifted-out string is completed under a slurry umbrella, but because crude oil has larger viscosity and is attached to the pipe wall for a long time, the thick layer is accumulated, the flushing is carried out only by water pressure, the requirement for pressure intensity is higher for the flushing time, and the flushing is easy to be incomplete.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil-water well tubular column washing unit in pit to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a kind of oil-water well downhole tubular column flushing arrangement, comprising: wash pipe and flush tank, the wash pipe is connected with the leak protection union coupling, leak protection union coupling mud umbrella, the flush tank is installed on the wash pipe, inside washing unit and the scraping device of being equipped with of flush tank, washing unit includes annular water pipe and shower nozzle, annular water pipe is located the flush tank to surround the wash pipe setting, the shower nozzle is installed at the flush pipe inboard, and shower nozzle intercommunication annular water pipe, and the flush tank outside is equipped with the water inlet, water inlet intercommunication annular water pipe, scraping device includes electric putter and doctor-bar, electric putter passes through the telescopic link and connects the doctor-bar, telescopic link and doctor-bar swing joint, the doctor-bar is the arc shape.

As a further aspect of the present invention: the spray heads are arranged in a plurality and are uniformly distributed around the flushing pipe in an annular mode.

As a further aspect of the present invention: the spray heads are arranged in a plurality of rows on the flushing pipe, and the positions of the spray heads in the upper row and the lower row are distributed in a staggered manner.

As a further aspect of the present invention: the scraper is provided with an installation groove, the telescopic rod penetrates through the scraper, meanwhile, the end part of the telescopic rod is locked by a nut, the nut is located in the installation groove, the outer side of the telescopic rod is sleeved with a spring, and the spring abuts between the scraper and the flushing pipe.

As a further aspect of the present invention: the scraping blades are arranged in a plurality and are uniformly distributed around the flushing pipe in an annular mode.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can strike off the impurity on the pipe wall with the doctor-bar earlier, then reuse water pressure washes, makes the washing effect better, and efficiency is higher.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the connection between the scraping device and the flushing pipe of the present invention.

Fig. 3 is a schematic view of the connection between the middle scraper and the telescopic rod of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, in the embodiment of the present invention, an oil-water well downhole pipe column washing device includes: the washing device comprises a washing pipe 3 and a washing tank 4, wherein the washing pipe 3 is connected with a leakage-proof pipe 2, the leakage-proof pipe 2 is connected with a mud umbrella 1, the washing tank 4 is arranged on the washing pipe 3, a washing device and a scraping device are arranged inside the washing tank 4, the washing device comprises an annular water pipe 41 and spray heads 411, the annular water pipe 41 is positioned in the washing tank 4 and is arranged around the washing pipe 3, the spray heads 411 are arranged inside the washing pipe 3, the spray heads 411 are communicated with the annular water pipe 41, a water inlet 412 is arranged outside the washing tank 4, the water inlet 412 is communicated with the annular water pipe 41, meanwhile, the water inlet 412 can be externally connected with a high-pressure water pipe, the spray heads 411 are uniformly distributed in an annular mode around the washing pipe 3, meanwhile, a plurality of rows of spray heads 411 are arranged on the washing pipe 3, the positions of the spray heads 411 in the upper row and the lower, no dead angle is left.

The scraping device comprises an electric push rod 42 and a scraping blade 423, the electric push rod 42 is connected with the scraping blade 423 through a telescopic rod 421, the scraping blade 423 is in an arc shape, the scraping blade 423 is provided with a plurality of scraping blades which are uniformly distributed around the flushing pipe 3 in an annular mode, the electric push rod 42 is connected with an external control system, and when the scraping device is used, the telescopic rod 421 is controlled to extend out through the electric push rod 42, so that the scraping blade 423 is in contact with the surface of a pipe column, and crude oil accumulated on the surface.

The telescopic link 421 and the doctor blade 423 are movably connected, the doctor blade 423 is provided with a mounting groove 424, the telescopic link 421 penetrates through the end of the doctor blade 423 and is locked by a nut, the nut is positioned in the mounting groove 424, the spring 422 is sleeved outside the telescopic link 421, and the spring 422 is propped between the doctor blade 423 and the flushing pipe 3, so that the doctor blade 423 can move back and forth on the telescopic link 421, when the surface of a pipe column has a fluctuant bulge, the doctor blade 423 can retreat and avoid scratching the pipe column when encountering the bulge.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A kind of oil-water well downhole tubular column flushing arrangement, comprising: flushing pipe (3) and flush tank (4), its characterized in that: the flushing pipe (3) is connected to the anti-leakage pipe (2), the anti-leakage pipe (2) is connected with the mud umbrella (1), the flushing box (4) is installed on the flushing pipe (3), a washing device and a scraping device are arranged inside the flushing box (4), the washing device comprises an annular water pipe (41) and a spray head (411), the annular water pipe (41) is located in the flushing box (4) and arranged around the flushing pipe (3), the spray head (411) is installed on the inner side of the flushing pipe (3), the spray head (411) is communicated with the annular water pipe (41), a water inlet (412) is formed in the outer side of the flushing box (4), the water inlet (412) is communicated with the annular water pipe (41), the scraping device comprises an electric push rod (42) and a scraping blade (423), the electric push rod (42) is connected with the scraping blade (423) through an expansion rod (421), and the expansion rod (421) is movably connected with the scraping blade (423, the scraping blade (423) is in a circular arc shape.

2. The apparatus as claimed in claim 1, wherein: the plurality of spray heads (411) are uniformly distributed around the flushing pipe (3) in an annular manner.

3. The apparatus as claimed in claim 2, wherein: the spray heads (411) are arranged in a plurality of rows on the flushing pipe (3), and the positions of the spray heads (411) in the upper row and the lower row are distributed in a staggered manner.

4. A device for washing a tubular column used in oil and water wells according to claim 3, wherein: doctor-bar (423) are equipped with mounting groove (424), telescopic link (421) pass doctor-bar (423) tip simultaneously and pass through the nut locking, the nut is located mounting groove (424), telescopic link (421) outside suit spring (422), spring (422) are supported between doctor-bar (423) and flushing pipe (3).

5. An oil-water well downhole string flushing device according to claim 4, wherein: the scraping blades (423) are arranged in a plurality and are uniformly distributed around the flushing pipe (3) in an annular mode.