阅读说明：本技术 油管清洁装置 (Oil pipe cleaning device ) 是由 翁国鹏 李经纬 于峰 杨雷 童建新 李伟杰 李秋颖 刘涛 沈建辉 于天奇 吴颖 于 2018-06-26 设计创作，主要内容包括：本发明公开了一种油管清洁装置,属于油井开采领域。所述装置包括：筒体、用于与井口连接的底座和用于固定所述筒体的压盖；所述筒体的侧壁内设置有环形腔体,所述环形腔体的外壁上设置有高压管接头,所述环形腔体的内壁上开设有与所述圆柱形内腔连通的多个高压喷孔,所述多个高压喷孔在所述筒体周向间隔设置；所述圆柱形内腔内沿长度方向间隔设置有两个环形的清油胶体,所述两个环形的清油胶体均设置在所述高压喷孔与所述压盖之间,所述筒体的侧壁上还设置有泄油口,所述泄油口设置在所述两个环形的清油胶体中靠近所述底座的清油胶体的上表面处。(The invention discloses an oil pipe cleaning device, and belongs to the field of oil well exploitation. The device comprises: the device comprises a cylinder body, a base used for being connected with a wellhead and a gland used for fixing the cylinder body; an annular cavity is arranged in the side wall of the barrel, a high-pressure pipe joint is arranged on the outer wall of the annular cavity, a plurality of high-pressure spray holes communicated with the cylindrical inner cavity are formed in the inner wall of the annular cavity, and the high-pressure spray holes are arranged at intervals in the circumferential direction of the barrel; the inner side of the cylindrical inner cavity is provided with two annular edible vegetable oil colloids at intervals along the length direction, the two annular edible vegetable oil colloids are arranged between the high-pressure spray holes and the gland, the side wall of the barrel is further provided with an oil drainage port, and the oil drainage port is arranged on the upper surface of the edible vegetable oil colloid, close to the base, of the two annular edible vegetable oil colloids.)

1. An oil pipe cleaning device, comprising: the oil pipe well comprises a cylinder body, a base used for being connected with a well head and a gland used for fixing the cylinder body, wherein a cylindrical inner cavity is arranged in the middle of the cylinder body, one end of the cylindrical inner cavity is an oil pipe inlet, the base is fixed on the outer wall of one end, provided with the oil pipe inlet, of the cylinder body, the gland is fixed at the other end of the cylinder body, and an oil pipe outlet communicated with the cylindrical inner cavity is formed in the gland;

an annular cavity is arranged in the side wall of the barrel, a high-pressure pipe joint is arranged on the outer wall of the annular cavity, a plurality of high-pressure spray holes communicated with the cylindrical inner cavity are formed in the inner wall of the annular cavity, and the high-pressure spray holes are arranged at intervals along the circumferential direction of the barrel;

two annular edible vegetable oil colloids are arranged in the cylindrical inner cavity at intervals along the length direction, the two annular edible vegetable oil colloids are both arranged between the high-pressure spray hole and the gland, an oil drainage port is further arranged on the side wall of the barrel body, and the oil drainage port is arranged on the upper surface, close to the edible vegetable oil colloid of the base, of the two annular edible vegetable oil colloids;

the edible vegetable oil colloid comprises colloid and a metal interlayer arranged in the colloid, wherein a through hole is formed in the middle of the edible vegetable oil colloid, the through hole comprises a part close to a circular table type through hole of the base and a part close to a cylindrical through hole of the gland, the upper bottom surface of the circular table type through hole is connected with the cylindrical through hole, the diameter of the upper bottom surface of the circular table type through hole is equal to that of the cylindrical through hole, the diameter of the upper bottom surface of the circular table type through hole is smaller than that of the lower bottom surface of the circular table type through hole, the metal interlayer is arranged at the part of the circular table type through hole and the part of the cylindrical through hole are connected, and the diameter of the middle through hole of the metal interlayer is equal to that of the lower bottom surface of the circular table type through hole.

2. The oil pipe cleaning device of claim 1, wherein the high pressure nozzle hole is circular, and the diameter of the high pressure nozzle hole ranges from 1mm to 2 mm.

3. The oil pipe cleaning device according to claim 1, wherein 8-32 high pressure jet holes are formed in the inner wall of the annular cavity.

4. The oil pipe cleaning device of claim 1, wherein the gel is nitrile butadiene rubber.

5. The oil pipe cleaning device of claim 1, wherein the metal interlayer is a rigid material.

6. The oil pipe cleaning device according to any one of claims 1 to 5, wherein the barrel comprises a first barrel and a second barrel, the outer diameter of the first barrel is the same as the inner diameter of the second barrel, one end of the first barrel is connected with the base, the other end of the first barrel is arranged in the second barrel and fixedly connected with one end of the second barrel, the other end of the second barrel is connected with the gland, the two annular clear oil colloids are respectively arranged at two ends in the second barrel, a spacer ring for supporting and fixing is arranged between the two annular clear oil colloids, and an oil drainage hole communicated with the oil drainage port is arranged on the spacer ring.

7. The oil pipe cleaning device of claim 6, wherein the first cylinder comprises an inner shell and an outer shell, and the annular cavity is formed between the inner shell and the outer shell.

8. The oil pipe cleaning device of claim 7, wherein two O-ring seals are disposed between the inner casing and the outer casing, and the two O-ring seals are respectively located above and below the annular cavity.

9. The oil pipe cleaning device according to any one of claims 1-5, wherein the base is sleeved on the outer wall of the cylinder body, and an annular groove used for being matched with a wellhead is formed in the bottom of the base.

10. The oil pipe cleaning device according to any one of claims 1-5, wherein a plurality of screw holes are arranged on the pressure cover at intervals, and a locking bolt for fixedly connecting with a wellhead is arranged in each screw hole.

Technical Field

The invention relates to the technical field of oil well exploitation, in particular to an oil pipe cleaning device.

Background

At present, after the oil pipe is used for a long time, the oil pipe needs to be cleaned so as to prevent oil stain and other residues from corroding the oil pipe.

There is an oil pipe cleaning device, which includes a cleaning barrel and a plurality of nozzles arranged on a side wall of the cleaning barrel. In the process of cleaning the oil pipe, the oil pipe is lifted out through external equipment, the cleaning barrel can be passed through in the process that the oil pipe is lifted out, and the oil pipe sprays water to the outer wall of the oil pipe through the nozzle when passing through the cleaning barrel so as to achieve the effect of cleaning oil stains.

However, when the oil pipe cleaning device is used for cleaning the oil pipe, the following problems exist: the nozzle in the oil pipe cleaning device is in a shower type, the adhesion force of oil stains on the oil pipe is strong, the oil stains are difficult to completely clear up only by spraying water through the shower type nozzle, and the cleaning effect is not good enough.

Disclosure of Invention

The embodiment of the invention provides an oil pipe cleaning device, which aims to solve the problem that oil stains on an oil pipe are difficult to completely remove in the prior art. The technical scheme is as follows:

the embodiment of the invention provides an oil pipe cleaning device, which comprises: the oil pipe well comprises a cylinder body, a base used for being connected with a well head and a gland used for fixing the cylinder body, wherein a cylindrical inner cavity is arranged in the middle of the cylinder body, one end of the cylindrical inner cavity is an oil pipe inlet, the base is fixed on the outer wall of one end, provided with the oil pipe inlet, of the cylinder body, the gland is fixed at the other end of the cylinder body, and an oil pipe outlet communicated with the cylindrical inner cavity is formed in the gland;

an annular cavity is arranged in the side wall of the barrel, a high-pressure pipe joint is arranged on the outer wall of the annular cavity, a plurality of high-pressure spray holes communicated with the cylindrical inner cavity are formed in the inner wall of the annular cavity, and the high-pressure spray holes are arranged at intervals along the circumferential direction of the barrel;

two annular edible vegetable oil colloids are arranged in the cylindrical inner cavity at intervals along the length direction, the two annular edible vegetable oil colloids are both arranged between the high-pressure spray hole and the gland, an oil drainage port is further arranged on the side wall of the barrel body, and the oil drainage port is arranged on the upper surface, close to the edible vegetable oil colloid of the base, of the two annular edible vegetable oil colloids;

the edible vegetable oil colloid comprises colloid and a metal interlayer arranged in the colloid, wherein a through hole is formed in the middle of the edible vegetable oil colloid, the through hole comprises a part close to a circular table type through hole of the base and a part close to a cylindrical through hole of the gland, the upper bottom surface of the circular table type through hole is connected with the cylindrical through hole, the diameter of the upper bottom surface of the circular table type through hole is equal to that of the cylindrical through hole, the diameter of the upper bottom surface of the circular table type through hole is smaller than that of the lower bottom surface of the circular table type through hole, the metal interlayer is arranged at the part of the circular table type through hole and the part of the cylindrical through hole are connected, and the diameter of the middle through hole of the metal interlayer is equal to that of the lower bottom surface of the circular table type through hole.

In one implementation manner of the embodiment of the present invention, the high-pressure nozzle is circular, and the diameter of the high-pressure nozzle ranges from 1mm to 2 mm.

In another implementation manner of the embodiment of the invention, 8-32 high-pressure spray holes are formed in the inner wall of the annular cavity.

In another implementation manner of the embodiment of the present invention, the colloid is butadiene acrylonitrile rubber.

In another implementation of the embodiment of the invention, the metal interlayer is a rigid material.

In another implementation manner of the embodiment of the present invention, the cylinder includes a first cylinder and a second cylinder, an outer diameter of the first cylinder is the same as an inner diameter of the second cylinder, one end of the first cylinder is connected to the base, the other end of the first cylinder is disposed in the second cylinder and is fixedly connected to one end of the second cylinder, the other end of the second cylinder is connected to the gland, the two annular clear oil colloids are disposed at two ends of the second cylinder respectively, a spacer ring for supporting and fixing is disposed between the two annular clear oil colloids, and an oil drainage hole communicated with the oil drainage port is disposed on the spacer ring.

In another implementation manner of the embodiment of the present invention, the first cylinder includes an inner shell and an outer shell, and the annular cavity is formed between the inner shell and the outer shell.

In another implementation manner of the embodiment of the present invention, two O-ring seals are disposed between the inner casing and the outer casing, and the two O-ring seals are respectively located above and below the annular cavity.

In another implementation manner of the embodiment of the invention, the base is sleeved on the outer wall of the cylinder, and the bottom of the base is provided with an annular groove used for being matched with a wellhead.

In another implementation manner of the embodiment of the invention, a plurality of screw holes are arranged on the gland at intervals, and a locking bolt for fixedly connecting with a wellhead is arranged in each screw hole.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

in the oil pipe cleaning device provided by the embodiment of the invention, the high-pressure spray holes and the two annular clear oil colloids are sequentially arranged in the oil pipe lifting direction. Therefore, in the process of lifting the oil pipe, the oil stain on the outer wall of the oil pipe is firstly washed by the high-temperature and high-pressure water jetted from the high-pressure jet holes, and a part of the oil stain on the outer wall of the oil pipe is washed away in the process. The oil pipe is in the in-process that continues to be played out, will pass through two annular edible vegetable oil glue bodies, and because the diameter of the middle part through-hole of two annular edible vegetable oil glue bodies is slightly less than the diameter of oil pipe, and all wrap up the metal intermediate layer in the two annular edible vegetable oil glue bodies, so have certain colloid intensity so two annular edible vegetable oil glue bodies will wipe oil pipe, reach here and wash cleaner effect. After the first oil pipe is cleaned, the subsequent oil pipes continuously pass through the device, so that the online cleaning effect is achieved. In addition, the whole device has simple design structure, thereby being convenient to install and operate. Meanwhile, the high-pressure spray holes are adopted for stabbing and washing, so that well washing liquid can be greatly reduced, the material cost of well washing is reduced, on the other hand, the well washing liquid is reduced, the liquid discharge period of an oil well is shortened, and the time cost of well washing is reduced. This clear oil colloid includes colloid and the metal intermediate layer of setting in its inside, guarantees the intensity height of colloid and be difficult to damage on the one hand, and colloid antifatigue reaches and does not damage through 300 oil pipes, and on the other hand increases metal intermediate layer, and annular clear oil colloid intensity improves, makes annular clear oil colloid frizing effect better. Furthermore, the middle through hole of the clear oil colloid consists of a circular truncated cone-shaped through hole part close to the base and a cylindrical through hole part close to the gland, the diameter of the upper bottom surface of the circular truncated cone-shaped through hole part is equal to that of the cylindrical through hole part, and the diameter of the upper bottom surface of the circular truncated cone-shaped through hole part is smaller than that of the lower bottom surface of the circular truncated cone-shaped through hole part, so that the oil pipe can conveniently pass through the through hole, and the cylindrical through hole part can fully wipe the oil pipe; in addition, metal interlayer sets up round platform type through-hole part with cylinder type through-hole part department of meeting, just metal interlayer's middle part through-hole's diameter with the diameter of the lower bottom surface of round platform type through-hole part equals for metal interlayer can be under the prerequisite of guaranteeing that oil pipe passes through, gets rid of the stubborn greasy dirt of oil pipe outer wall through the metal level, guarantees the clean effect of whole device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of an oil pipe cleaning device provided by the present invention;

FIG. 2 is a top view of an oil pipe cleaning apparatus provided in FIG. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an oil pipe cleaning device provided by the present invention, and referring to fig. 1, the device includes: the oil pipe well head comprises a gland 10 and a barrel 20 for fixing the barrel, and a base 30 for being connected with a well head, wherein the middle part of the barrel is provided with cylindrical inner cavities 201 and 202, one end of the inner cavity of the cylindrical cavity 202 is an oil pipe inlet 40, the base 30 is fixed on the outer wall of one end, provided with the oil pipe inlet, of the barrel 20, the gland 10 is fixed on the other end of the barrel, and the gland 10 is provided with an oil pipe outlet 50 communicated with the cylindrical inner cavity 201.

An annular cavity 202 is arranged in the side wall of the barrel 20, a high-pressure pipe joint 203 is arranged on the outer wall of the annular cavity 202, a plurality of high-pressure spray holes 204 communicated with the cylindrical inner cavity are formed in the inner wall of the annular cavity 202, and the plurality of high-pressure spray holes 204 are arranged at intervals along the circumferential direction of the barrel 20.

Still be provided with annular cavity 201 in the lateral wall of barrel 20, be provided with two annular edible vegetable oil glue 501 and 502 along the length direction interval in the cylindrical inner chamber 201, two annular edible vegetable oil glue all set up high pressure orifice 204 with between the gland 10, still be provided with draining port 205 on the lateral wall of barrel 20, draining port 205 sets up be close to in two annular edible vegetable oil glue the upper surface department of the annular edible vegetable oil glue 501 of base 30.

In the present embodiment, the annular oleo gels 501 and 502 include a gel and a metal interlayer disposed therein. As shown in fig. 1, the clear oil colloid middle part is provided with the through-hole, and this through-hole is including being close to base 30's round platform type through-hole part 5A and being close to gland 10's cylinder type through-hole part 5B, the last bottom surface 5A of round platform type through-hole part with cylinder type through-hole part 5B meets, just the diameter of the last bottom surface of round platform type through-hole part 5A equals cylinder type through-hole part 5B's diameter, the diameter of the last bottom surface of round platform type through-hole part 5A is less than the diameter of round platform type through-hole part 5A's lower bottom surface, metal sandwich sets up round platform type through-hole part 5A with cylinder type through-hole part 5B meets the department, just the diameter of metal sandwich's middle part through-hole with the diameter of round platform type through-hole part 5B's lower.

In the oil pipe cleaning device provided by the embodiment of the invention, the high-pressure spray holes and the two annular clear oil colloids are sequentially arranged in the oil pipe lifting direction. Therefore, in the process of lifting the oil pipe, the oil stain on the outer wall of the oil pipe is firstly washed by the high-temperature and high-pressure water jetted from the high-pressure jet holes, and a part of the oil stain on the outer wall of the oil pipe is washed away in the process. The oil pipe is continuing the in-process of being played out, will be through two annular edible vegetable oil glue bodies, and because the diameter of the middle part through-hole of two annular edible vegetable oil glue bodies is slightly less than oil pipe's diameter, and all wrap up metal sandwich in two annular edible vegetable oil glue bodies, so have certain colloid intensity so two annular edible vegetable oil glue bodies will wipe oil pipe, reach the cleaner effect of washing. After the first oil pipe is cleaned, the subsequent oil pipes continuously pass through the device, so that the online cleaning effect is achieved. In addition, the whole device has simple design structure, thereby being convenient to install and operate. Meanwhile, the high-pressure spray holes are adopted for stabbing and washing, so that well washing liquid can be greatly reduced, the material cost of well washing is reduced, on the other hand, the well washing liquid is reduced, the liquid discharge period of an oil well is shortened, and the time cost of well washing is reduced. This clear oil colloid includes colloid and the metal intermediate layer of setting in its inside, guarantees the intensity height of colloid and be difficult to damage on the one hand, and colloid antifatigue reaches and does not damage through 300 oil pipes, and on the other hand increases metal intermediate layer, and annular clear oil colloid intensity improves, makes annular clear oil colloid frizing effect better. Furthermore, the middle through hole of the clear oil colloid consists of a circular truncated cone-shaped through hole part close to the base and a cylindrical through hole part close to the gland, the diameter of the upper bottom surface of the circular truncated cone-shaped through hole part is equal to that of the cylindrical through hole part, and the diameter of the upper bottom surface of the circular truncated cone-shaped through hole part is smaller than that of the lower bottom surface of the circular truncated cone-shaped through hole part, so that the oil pipe can conveniently pass through the through hole, and the cylindrical through hole part can fully wipe the oil pipe; in addition, metal interlayer sets up round platform type through-hole part with cylinder type through-hole part department of meeting, just metal interlayer's middle part through-hole's diameter with the diameter of the lower bottom surface of round platform type through-hole part equals for metal interlayer can be under the prerequisite of guaranteeing that oil pipe passes through, gets rid of the stubborn greasy dirt of oil pipe outer wall through the metal level, guarantees the clean effect of whole device.

In the embodiment of the invention, the annular clear oil colloid can be butadiene-acrylonitrile rubber. The metal interlayer is a layer of annular rigid material and is poured with the annular colloid into a whole. In other embodiments, the metal interlayer may also be a plurality of layers, which is not limited herein.

The diameter of the cylindrical through hole part 5B of the annular clear oil colloid is set to be 65mm, on one hand, the colloid elasticity meets the condition that an oil pipe with the diameter of 73mm and a coupling with the diameter of 93mm pass through, on the other hand, the oil pipe outer wall and oil stains can be wiped off through certain pressure, the oil stains on the outer wall of the oil pipe are not overflowed, and the oil pipe is kept to be a clean oil pipe when the oil pipe goes out of a well head.

As shown in fig. 1, in the oil pipe cleaning device shown in fig. 1, a gland 10, a cylinder 20 and a base 30 are connected in sequence, a circular groove for installing the cylinder 20 is arranged at the lower end of the gland 10, and the groove is communicated with the oil pipe outlet 50 and the cylindrical inner cavity 201. One end of the cylinder 20 can be provided with external threads, and the inner wall of the groove is provided with internal threads to realize threaded connection. In other embodiments, the connection may also be made directly by bolting or welding.

The base 30 is provided with a circular through hole for mounting the cylinder 20, and the other end of the cylinder 20 is mounted in the circular through hole. The other end of the cylinder 20 can be provided with external threads, and the inner wall of the circular through hole is provided with internal threads to realize threaded connection. In other embodiments, the connection may also be made directly by bolting or welding.

In other embodiments, the pressing cover, the cylinder and the base may be connected by other connection methods, which is not limited herein.

As shown in fig. 1, in the oil pipe cleaning device shown in fig. 1, an annular groove 301 is further provided on the bottom surface of the base 30 for connecting the oil pipe cleaning device with a wellhead steel ring. In this embodiment, the size of the annular groove 301 matches with the size of the steel ring of the wellhead, so as to ensure that the groove can be matched with the steel ring of the wellhead, and the installation of the device is realized. Wherein, the steel ring can be a 250-type steel ring or steel rings of other types. The section of the annular groove 301 is trapezoidal, so that the annular groove is matched with a steel ring.

As shown in fig. 1, in the oil pipe cleaning device shown in fig. 1, the plurality of high pressure nozzle holes 204 are circumferentially spaced on the cylinder 20, that is, the plurality of high pressure nozzle holes 204 are arranged at the same height on the cylinder 20, so that when the oil pipe is cleaned, each position in the circumferential direction of the oil pipe can be cleaned.

Specifically, the number of the high-pressure nozzles 204 may be 8 to 32, on one hand, the number of the high-pressure nozzles 204 is large, so that a good stabbing and washing effect on an oil pipe can be ensured, and on the other hand, the number of the high-pressure nozzles 204 is not too large, so that the rigidity of the cylinder 20 is damaged. Preferably, the number of the high pressure nozzle holes 204 may be 16.

The high-pressure nozzle 204 is formed by drilling a hole in the cylinder 20 by laser, and is circular. The diameter of the high-pressure spray holes 204 is 1-2 mm, and the diameter of the high-pressure spray holes 204 is small, so that when the external small-sized industrial hot washing machine supplies water through the high-pressure pipe joint 203, high-temperature and high-pressure water is sprayed out from the high-pressure spray holes 204 in a pressure-holding mode, the effect of stabbing washing is achieved, the fluid energy loss in the pressure-holding mode is small, the energy utilization maximization is achieved, and the cleaning effect is good. Preferably, the diameter of the high pressure jet holes 204 is 1mm, which can greatly reduce the flushing fluid.

As shown in fig. 1, in the oil pipe cleaning device shown in fig. 1, the cylinder 20 includes a first cylinder 208 and a second cylinder 207, wherein the inner diameters of the first cylinder 208 and the second cylinder 207 are the same, one end of the first cylinder 208 is connected to the base 30, the other end is disposed in the second cylinder 207 and is fixedly connected to one end of the second cylinder 207, the other end of the second cylinder 207 is connected to the gland 10, two annular grease bodies 501 and 502 are disposed at two ends of the second cylinder 207 and are supported and fixed by a spacer ring 206, and the spacer ring 206 is further provided with an oil drain hole communicated with the oil drain port 205.

The diameter of the oil drainage hole 205 is 1.5 inches, and in other embodiments, the oil drainage hole may have other sizes, which is not limited herein.

As shown in fig. 1, in the oil pipe cleaning device shown in fig. 1, the spacer ring 206 is a hollow metal cylinder, the lower end of the spacer ring 206 is disposed on the upper surface of one clear oil colloid 501, another clear oil colloid 502 is disposed on the upper end of the spacer ring 206, that is, the spacer ring 206 and the first cylinder 208 clamp the one clear oil colloid 501, and the spacer ring 206 and the gland 10 clamp the another clear oil colloid 502.

In the embodiment of the present invention, the first cylinder 208 includes an inner shell 209 and an outer shell 210, the annular cavity 211 is formed between the inner shell and the outer shell, and the inner shell 209 and the outer shell 210 are respectively designed to facilitate laser drilling on the inner shell, so as to implement the high-pressure nozzle 204.

The inner housing 209 and the outer housing 210 may be connected by a screw, that is, an inner surface of the inner housing 209 is provided with an inner thread, and an outer surface of the outer housing 210 is provided with an outer thread.

As shown in fig. 1, in the oil pipe cleaning device shown in fig. 1, the inside of the cylinder 20 is further provided with two O-ring seals 206, the two O-ring seals are made of rubber and are respectively located above and below the annular cavity, and in this embodiment, it is more preferable that the O-ring seals are distributed above and below the high-pressure nozzle 204.

Referring to fig. 1, a mounting port for mounting the high-pressure pipe connector 203 is provided at a position of the housing 210 corresponding to the annular cavity 211.

In this embodiment, one or two mounting ports may be disposed on the housing 210, and one or two mounting ports are designed to meet the water supply requirement, while the housing 210 has a simple structure and a good rigidity. In other embodiments, the number of the mounting openings on the housing 210 may also be greater than 2, which is not limited in this application.

Fig. 2 is a plan view of the oil pipe cleaning device provided in fig. 1, referring to fig. 1 and 2, wherein a screw hole 101 is provided in the gland 10 for fixing the oil pipe cleaning device, and a locking bolt for connecting with a wellhead is provided in each screw hole for fixing the oil pipe cleaning device with the wellhead.

In this embodiment, the number of the screw holes 101 is three, and the screw holes are uniformly distributed on the gland; in other embodiments, the number of the screw holes may also be four, five, etc., which is not limited in this application.

In the embodiment of the present invention, the pressing cover 10, the cylinder 20 and the base 30 may be made of steel to ensure the strength of the whole apparatus.

The working process of the oil pipe cleaning device provided by the embodiment of the invention is as follows: during operation, the well mouth is dismantled, the pump truck inputs high-pressure fluid into the oil pipe to hold the blasting type oil drain device in the well open, the sucker rod string is lifted out, and the oil pipe hanger is lifted out; sequentially combining and integrally assembling the gland, the cylinder and the base, connecting the base groove with a well mouth, and tightening 3 locking bolts; the oil pipe moves upwards under the action of the tension of the workover rig; firstly, connecting a small industrial hot washing machine with a high-pressure pipe joint 203, enabling high-temperature and high-pressure water to enter 16 high-pressure spray holes under the pressure effect to enter a cylindrical ring cavity, and spraying the outer wall of an oil pipe from 16 nozzles at 360 degrees, so that the effect of completely washing the outer wall of the oil pipe is achieved; the oil pipe continues to go upwards to penetrate through the annular clear oil colloid 501, the diameter of the through hole of the annular clear oil colloid 501 is 65mm smaller than that of the oil pipe, so that the effect of wiping the outer wall of the oil pipe is achieved, and oil stains on the outer wall of the oil pipe are scraped down by the annular clear oil colloid 501 and flow into the casing pipe; the oil pipe continues to go upwards to penetrate through the annular clear oil colloid 502, the outer wall of the oil pipe is wiped for the second time, and the effect that the oil pipe is lifted out of a well mouth to complete cleaning is achieved; an oil drainage hole connected with the oil drainage port 205 is formed in the middle of the spacer ring 206, so that oil stains scraped by the annular clear oil colloid 502 above can be collected, and pollution is prevented. According to the mode, a plurality of oil pipes sequentially pass through the device, and the purpose of cleaning the oil pipes in the oil well on line is achieved, wherein high-temperature and high-pressure water sprayed from the high-pressure spray holes falls into an oil sleeve annulus along with oil stains on the outer wall of the oil pipe, and is extracted through a pump after cleaning operation is completed, so that environment-friendly operation is achieved.