阅读说明：本技术 一种油管外壁井口刮油清洗装置 (Oil pipe outer wall well head frizing belt cleaning device ) 是由 刘宇航 刘伟 孙新杰 董小斌 李清伟 杨浩平 童启金 乐拥军 孙俊 王伟 丁一铭 于 2020-07-30 设计创作，主要内容包括：本发明涉及一种装置,具体涉及一种油管外壁井口刮油清洗装置。本发明的技术方案如下：一种油管外壁井口刮油清洗装置,包括壳体、压帽、压环、油管自封芯子、喷嘴壳体、喷嘴、进水高压球阀和防喷机构,所述壳体的内壁上部设有斜台,所述压帽安装在所述壳体的上端,所述压帽通过所述压环将油管自封芯子压紧在所述斜台上；所述喷嘴壳体安装在所述壳体的内壁下部,所述喷嘴壳体上均匀镶嵌多个所述喷嘴；所述壳体的侧面连接所述进水高压球阀；所述防喷机构用于预防井喷、井涌事故。本发明提供的油管外壁井口刮油清洗装置,能够实现在起油管的同时,对油管外壁进行刮油、清洗,以实现常规修井检泵作业的无污染操作。(The invention relates to a device, in particular to a wellhead oil scraping and cleaning device for an outer wall of an oil pipe. The technical scheme of the invention is as follows: a wellhead oil scraping and cleaning device for the outer wall of an oil pipe comprises a shell, a pressing cap, a pressing ring, an oil pipe self-sealing core, a nozzle shell, a nozzle, a water inlet high-pressure ball valve and a blowout prevention mechanism, wherein an inclined table is arranged on the upper portion of the inner wall of the shell, the pressing cap is installed at the upper end of the shell, and the pressing cap tightly presses the oil pipe self-sealing core on the inclined table through the pressing ring; the nozzle shell is arranged on the lower part of the inner wall of the shell, and a plurality of nozzles are uniformly embedded on the nozzle shell; the side surface of the shell is connected with the water inlet high-pressure ball valve; the blowout prevention mechanism is used for preventing blowout and kick accidents. The oil scraping and cleaning device for the wellhead on the outer wall of the oil pipe can scrape and clean the outer wall of the oil pipe while the oil pipe is lifted, so that pollution-free operation of conventional well repairing and pump inspection operation is realized.)

1. A wellhead oil scraping and cleaning device for the outer wall of an oil pipe is characterized by comprising a shell, a pressing cap, a pressing ring, an oil pipe self-sealing core, a nozzle shell, a nozzle, a water inlet high-pressure ball valve and a blowout prevention mechanism, wherein an inclined table is arranged on the upper portion of the inner wall of the shell, the pressing cap is installed at the upper end of the shell, and the pressing cap tightly presses the oil pipe self-sealing core on the inclined table through the pressing ring; the nozzle shell is arranged on the lower part of the inner wall of the shell, and a plurality of nozzles are uniformly embedded on the nozzle shell; the side surface of the shell is connected with the water inlet high-pressure ball valve; the blowout prevention mechanism is used for preventing blowout and kick accidents.

2. The apparatus for scraping and cleaning oil on the wellhead of the outer wall of the oil pipe according to claim 1, wherein the blowout prevention mechanism comprises a blowout prevention flange, a suspension joint, a high-pressure cock, a lifting sub and an M30 bolt, the lower part of the blowout prevention flange is connected with the suspension joint, the upper part of the blowout prevention flange is connected with the high-pressure cock, and the upper part of the high-pressure cock is connected with the lifting sub; when the blowout prevention flange is used, the blowout prevention flange is connected with the pressure cap through an M30 bolt, and the suspension joint is connected with an oil pipe.

3. The oil pipe outer wall wellhead oil scraping and cleaning device as claimed in claim 1, wherein the outer wall of the nozzle housing is provided with an annular groove, the outer wall of the nozzle housing is tightly jointed with the inner wall of the housing, and an inlet cavity is formed at the annular groove; a plurality of water outlet holes are uniformly formed in the lower end of the nozzle shell along the circumference, the water outlet holes are communicated with the water inlet cavity, and the end heads of the water outlet holes are embedded with the nozzles; the water inlet high-pressure ball valve is communicated with the water inlet cavity.

4. The oil pipe outer wall wellhead oil scraping and cleaning device according to claim 1, characterized in that the oil pipe self-sealing core material is oil-resistant rubber; the middle section of the oil pipe self-sealing core is in a round sleeve shape, and two ends of the oil pipe self-sealing core are in a horn mouth shape respectively; the middle section inner hole of the oil pipe self-sealing core and the oil pipe can be installed in a fitting manner; and an annular sharp-horn-shaped protrusion is arranged at one end of the oil pipe self-sealing core and is attached to the sloping platform.

Technical Field

The invention relates to a device, in particular to a wellhead oil scraping and cleaning device for an outer wall of an oil pipe.

Background

At present, when a pump is operated in an oil field well repairing and pump checking, residual oil stains are carried on an oil pipe lifted out of an oil well, the lifted oil pipe is discharged on the ground of a construction well site, and although some antifouling measures are adopted, such as paving impermeable plastic cloth under the oil pipe, the hidden trouble of ground environment pollution still exists.

Disclosure of Invention

The invention provides a wellhead oil scraping and cleaning device for an outer wall of an oil pipe, which can scrape and clean the outer wall of the oil pipe while the oil pipe is lifted so as to realize pollution-free operation of conventional well repairing and pump inspection operation.

The technical scheme of the invention is as follows:

a wellhead oil scraping and cleaning device for the outer wall of an oil pipe comprises a shell, a pressing cap, a pressing ring, an oil pipe self-sealing core, a nozzle shell, a nozzle, a water inlet high-pressure ball valve and a blowout prevention mechanism, wherein an inclined table is arranged on the upper portion of the inner wall of the shell, the pressing cap is installed at the upper end of the shell, and the pressing cap tightly presses the oil pipe self-sealing core on the inclined table through the pressing ring; the nozzle shell is arranged on the lower part of the inner wall of the shell, and a plurality of nozzles are uniformly embedded on the nozzle shell; the side surface of the shell is connected with the water inlet high-pressure ball valve; the blowout prevention mechanism is used for preventing blowout and kick accidents.

The oil scraping and cleaning device for the wellhead on the outer wall of the oil pipe preferably comprises an anti-blowout flange, a suspension joint, a high-pressure cock, a lifting sub and an M30 bolt, wherein the lower part of the anti-blowout flange is connected with the suspension joint, the upper part of the anti-blowout flange is connected with the high-pressure cock, and the upper part of the high-pressure cock is connected with the lifting sub; when the blowout prevention flange is used, the blowout prevention flange is connected with the pressure cap through an M30 bolt, and the suspension joint is connected with an oil pipe.

The oil scraping and cleaning device for the wellhead on the outer wall of the oil pipe has the preferable scheme that an annular groove is formed in the outer wall of the nozzle shell, the outer wall of the nozzle shell is tightly jointed with the inner wall of the shell, and a water inlet cavity is formed at the annular groove; a plurality of water outlet holes are uniformly formed in the lower end of the nozzle shell along the circumference, the water outlet holes are communicated with the water inlet cavity, and the end heads of the water outlet holes are embedded with the nozzles; the water inlet high-pressure ball valve is communicated with the water inlet cavity.

The oil scraping and cleaning device for the wellhead on the outer wall of the oil pipe has the preferable scheme that the oil pipe self-sealing core is made of oil-resistant rubber; the middle section of the oil pipe self-sealing core is in a round sleeve shape, and two ends of the oil pipe self-sealing core are in a horn mouth shape respectively; the middle section inner hole of the oil pipe self-sealing core and the oil pipe can be installed in a fitting manner; and an annular sharp-horn-shaped protrusion is arranged at one end of the oil pipe self-sealing core and is attached to the sloping platform.

The working process of the oil pipe outer wall wellhead oil scraping and cleaning device is as follows: pumping high-temperature steam hot water output by a steam boiler pump truck into a water inlet cavity formed by the shell and the nozzle shell through a water inlet high-pressure ball valve connected to the side surface of the shell; the high-temperature steam hot water sprays high-temperature steam hot water to the outer wall of the oil pipe through the nozzle, and the temperature of the high-temperature steam hot water and the speed of spraying fluid by the nozzle are used for generating impact force to flush the crude oil on the outer wall of the oil pipe; meanwhile, residual oil stains on the outer wall of the oil pipe are scraped clean by the oil pipe self-sealing core in the lifting process; while the sewage and crude oil produced in the cleaning process flow into the annular space of the casing.

The invention has the beneficial effects that: the oil scraping and cleaning device for the wellhead on the outer wall of the oil pipe can scrape and clean the outer wall of the oil pipe while the oil pipe is lifted, so that pollution-free operation of conventional well repairing and pump inspection operation is realized.

Drawings

FIG. 1 is a structural diagram of a wellhead oil scraping and cleaning device without a blowout prevention mechanism on the outer wall of an oil pipe;

FIG. 2 is a block diagram of the blowout preventer;

FIG. 3 is a view of the nozzle housing structure;

FIG. 4 is a sectional view taken along line B-B of FIG. 3;

FIG. 5 is a view of the construction of the self-sealing core of the oil pipe;

FIG. 6 is a schematic view of the oil pipe outer wall wellhead oil scraping and cleaning device in the field installation and working state;

FIG. 7 is a schematic view of a wellhead oil scraping and cleaning device for an outer wall of an oil pipe for installing a part of the blowout prevention mechanism.

Detailed Description

As shown in fig. 1-7, a wellhead oil scraping and cleaning device for an outer wall of an oil pipe comprises a housing 1, a pressure cap 2, a pressure ring 3, an oil pipe self-sealing core 4, a nozzle housing 5, a nozzle 6, a water inlet high-pressure ball valve 7 and a blowout prevention mechanism, wherein an inclined table is arranged on the upper portion of the inner wall of the housing 1, the pressure cap 2 is installed at the upper end of the housing 1, and the pressure cap 2 tightly presses the oil pipe self-sealing core 4 on the inclined table through the pressure ring 3; the oil pipe self-sealing core 4 is made of oil-resistant rubber; the middle section of the oil pipe self-sealing core 4 is in a round sleeve shape, and two ends of the oil pipe self-sealing core are in a horn mouth shape respectively; the middle section inner hole of the oil pipe self-sealing core 4 and the oil pipe 16 can be installed in a fitting manner; an annular pointed-angle-shaped protrusion 15 is arranged at one end of the oil pipe self-sealing core 4, and the annular pointed-angle-shaped protrusion 15 is attached to the sloping platform; the nozzle shell 5 is arranged at the lower part of the inner wall of the shell 1, an annular groove 14 is formed in the outer wall of the nozzle shell 5, the outer wall of the nozzle shell 5 is tightly jointed with the inner wall of the shell 1, and a water inlet cavity is formed at the annular groove 14; twelve water outlet holes 13 are uniformly formed in the lower end of the nozzle shell 5 along the circumference, the water outlet holes 13 are communicated with the water inlet cavity, and the end heads of the water outlet holes 13 are embedded with the nozzles 6; the side surface of the shell 1 is connected with the water inlet high-pressure ball valve 7, and the water inlet high-pressure ball valve 7 is communicated with the water inlet cavity; the blowout prevention mechanism comprises a blowout prevention flange 10, a suspension joint 11, a high-pressure plug 9, a lifting sub 8 and an M30 bolt 12, wherein the lower part of the blowout prevention flange 10 is connected with the suspension joint 11, the upper part of the blowout prevention flange 10 is connected with the high-pressure plug 9, and the upper part of the high-pressure plug 9 is connected with the lifting sub 8; the blowout prevention mechanism is used for preventing blowout and kick accidents; in use, as shown in fig. 7, the blowout preventing flange 10 is connected with the pressure cap 2 through M30 bolts 12, and the suspension joint 11 is connected with the oil pipe 16.

As shown in fig. 6, the oil scraping and cleaning device for the wellhead on the outer wall of the oil pipe has the following working process:

1) the flange on the shell 1 is connected with the big four-way 17 of the Christmas tree to complete the installation of the oil scraping and cleaning device on the outer wall of the oil pipe.

2) The water inlet high-pressure ball valve 7 is connected with a steam boiler pump truck through a water inlet pipeline 18.

3) The first oil pipe 16 is lifted out of the well, high-temperature steam hot water is input into an annular water inlet cavity formed by the shell 1 and the nozzle shell 5 through the water inlet high-pressure ball valve 7 by the steam boiler pump truck, and the oil pipe 16 is washed through the nozzle 6.

4) And lifting the oil pipe 16, and scraping residual oil stains on the outer wall of the oil pipe 16 by using the oil pipe self-sealing core 4.

5) Each oil pipe 16 is subjected to flushing and scraping operations until all oil pipes 16 are lifted out.

6) When blowout and kick accidents are prevented, the blowout prevention flange 10 is connected with the pressure cap 2 through an M30 bolt 12, the suspension joint 11 is connected with the oil pipe 16, and the high-pressure plug 9 is closed.