CN218308848U

CN218308848U - Coiled tubing blowout preventer sprayed with hardened wear-resistant anticorrosive coating

Info

Publication number: CN218308848U
Application number: CN202222409628.XU
Authority: CN
Inventors: 孙瑞康; 刘素静; 于茜; 季振坤; 王睿
Original assignee: Hebei Xintiehu Petroleum Machinery Co ltd
Current assignee: Hebei Xintiehu Petroleum Machinery Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-01-17
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses a spraying stiffened wear-resisting anticorrosive coating's coiled tubing preventer, including coiled tubing preventer body, still include: collect mechanism and clearance mechanism, this internal drilling rod that is provided with of coiled tubing preventer, the top intercommunication of coiled tubing preventer body has the intermediate pipe, collect the mechanism including collecting the shell, collect shell and intermediate pipe intercommunication, fixedly connected with leak protection circle on the interior diapire of collection shell, it is applicable to lubricator technical field, contrast prior art, the wearing and tearing of silt outside the well and the chemical liquid in the well have the problem that corrodes the coiled tubing preventer of corrosivity, this design can be cleaned the silt that the drilling rod brought in from the well outside through the mode of cleaning and collect and get up concentratedly, simultaneously through scribbling the TIN coating on the inner wall of coiled tubing preventer body, reach the purpose of avoiding the corrosion of corrosive liquid in the well, the damage that goes on it outside and in the well of solution coiled tubing preventer body that this design can be better, the reliability is higher.

Description

Coiled tubing blowout preventer sprayed with hardened wear-resistant anticorrosive coating

Technical Field

The utility model relates to a lubricator technical field, concretely relates to spraying stiffened wear-resisting anticorrosive coating's continuous oil pipe preventer.

Background

As is well known, a coiled tubing blowout preventer is the most important safety blowout preventer in coiled tubing operation, and the wear resistance and the corrosion resistance of an inner sealing surface of a coiled tubing are directly related to the sealing function and the service life of the coiled tubing blowout preventer. Once the sealing surface is damaged or corroded, a product is returned to a factory to spend a large amount of time and cost for repairing the product, and if the sealing surface is damaged or corroded, the fluid in the sealing failure well is out of control to cause blowout, so that huge losses are caused to the country and the oil field.

In the use process of the existing coiled tubing blowout preventer, the sealing cavity of the ram is often pulled due to much silt in a well, so that the sealing is failed, because the hardness of the sealing cavity of the ram and the ram body moving in the sealing cavity, which are required to resist H2S and contacted with well fluid according to relevant standards of the petroleum industry, is in a range of 197-237HBW, and the low hardness causes the metal cavity of the ram and the ram body moving in the metal cavity of the ram to be not wear-resistant and easy to pull. There is a large amount of liquid that can arouse metal electrochemical corrosion in the well head, and the sealed region of metal receives well liquid corrosion to cause sealed inefficacy for a long time when coiled tubing preventer operates on the well head, and according to its outer silt wearing and tearing of well of equipment at present and the problem that chemical liquid has corrosive nature in the well corrodes coiled tubing preventer, this application has designed the coiled tubing preventer that a spraying stiffened wear-resisting anticorrosive coating.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a spraying stiffened wear-resisting anticorrosive coating's coiled tubing preventer to solve the prior art that proposes in the background art, the problem that chemical liquid has corrosivity and corrodes coiled tubing preventer in outer silt wearing and tearing and the well.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a spraying adds continuous oil pipe preventer of wear-resisting anticorrosive coating, includes the continuous oil pipe preventer body, still includes: the device comprises a collecting mechanism and a cleaning mechanism, wherein a drilling rod is arranged in a coiled tubing blowout preventer body, a middle pipe is communicated with the top end of the coiled tubing blowout preventer body, a TIN hardened wear-resistant anticorrosive coating is arranged on the inner wall of the coiled tubing blowout preventer body, the collecting mechanism comprises a collecting shell, the collecting shell is communicated with the middle pipe, a leakproof ring is fixedly connected to the inner bottom wall of the collecting shell, a collecting inner shell is connected to the inner bottom wall of the collecting shell in a sliding mode, two first connecting blocks and two fixed disks are fixedly connected to the top end of each first connecting block, two second connecting blocks and two middle disks are fixedly connected to the fixed disks, the other ends of the second connecting blocks are fixedly connected with the middle disks, the cleaning mechanism comprises two motors, the two motors are mounted at the bottom end of each fixed disk, the top end of each middle disk is rotatably connected with an inner toothed ring, two gears are fixedly connected with the output ends of the motors and meshed with the inner toothed rings, two connecting strips are fixedly connected to the connecting strips, and a cleaning brush is fixedly connected to the other ends of the cleaning rod.

In order to take out the silt of concentrating the collection, preferably, the front end and the rear end of collecting the inner shell have all been seted up the clearance mouth, it is provided with the baffle to rotate in the clearance mouth.

In order to lift the fixed tray to move upwards, two operating handles are further fixedly connected to the top end of the fixed tray.

In order to prevent the corrosion liquid in the coiled tubing from corroding the inner wall of the sprayer body, the spraying device is further provided.

In order to prolong the service life of the collecting outer shell and the collecting inner shell, as a further scheme of the scheme, the collecting outer shell and the collecting inner shell are both made of wear-resistant alloy materials.

In order to achieve a better cleaning effect, as a further scheme of the scheme, the cleaning brush is made of corrosion-resistant rubber.

In order to increase the connection strength between the collecting housing and the intermediate pipe, the collecting housing is welded to the intermediate pipe on the basis of the above solution.

In order to avoid corrosion of the collecting inner shell by the corrosive liquid, on the basis of the above solution, a protective coating is further provided on the inner wall of the collecting inner shell.

(III) advantageous effects

Compared with the prior art, the utility model provides a spraying stiffened wear-resisting anticorrosive coating's coiled tubing preventer possesses following beneficial effect:

the utility model discloses in through the cooperation of coiled tubing preventer body and drilling rod, be convenient for realize the probing work, through collecting the shell, the intervalve, the leak protection circle, collect the inner shell, first connecting block, the fixed disk, the cooperation of second connecting block and well disc, be convenient for concentrate the silt of collecting the clearance and getting off, it rotates to drive the gear through the motor, through the gear, the inner ring gear, the intervalve, the connecting strip, the cooperation of clearance pole and cleaning brush, be convenient for clear up the silt that carries on the drilling rod and get off, therefore, this spraying adds the coiled tubing preventer contrast prior art of hard wear-resisting anticorrosive coating, outer silt wearing and tearing of well and well chemical liquid have the problem of corrosive nature corruption coiled tubing preventer, this design can be through the mode of cleaning with the drilling rod follow well silt that the well brought in and clean and concentrate the collection, simultaneously through scribbling the TIN coating on the inner wall of coiled tubing preventer body, reach the mesh of avoiding the corrosion of corrosive liquid in the well to carry out to it, the damage that solution coiled tubing preventer body that this design can be better and the well, the reliability is higher.

Drawings

FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic view of a partially cut-away three-dimensional structure of the collection shell and the collection inner shell of the present invention;

FIG. 3 is a schematic view of the partial cross-sectional three-dimensional structure of the present invention, wherein the inner collecting shell and the first connecting block are engaged with each other;

fig. 4 is a schematic view of the three-dimensional structure of the motor and gear of the present invention.

In the figure: 1. a coiled tubing blowout preventer body; 2. drilling a probe rod; 3. an intermediate pipe; 4. a collection housing; 5. a leakage-proof ring; 6. collecting the inner shell; 7. a first connection block; 8. fixing the disc; 9. a second connecting block; 10. an intermediate tray; 11. a motor; 12. an inner gear ring; 13. a gear; 14. a connecting strip; 15. cleaning the rod; 16. cleaning a brush; 17. a baffle plate; 18. the handle is operated.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. 1-4, a coiled tubing blowout preventer coated with a hardened wear-resistant anti-corrosion coating comprises a coiled tubing blowout preventer body 1, and further comprises: collect mechanism and clearance mechanism, be provided with drilling rod 2 in the coiled tubing preventer body 1, the top intercommunication of coiled tubing preventer body 1 has well tube 3, collect the mechanism including collecting shell 4, collect shell 4 and well tube 3 intercommunication, collect fixedly connected with leak protection circle 5 on the interior diapire of shell 4, collect and have collection inner shell 6 in the sliding connection in shell 4, collect two first connecting blocks 7 of top fixedly connected with of inner shell 6, two the other end fixedly connected with fixed disk 8 of first connecting block 7, two second connecting blocks 9 of fixedly connected with on the fixed disk 8, two the other end fixedly connected with well dish 10 of second connecting block 9, clearance mechanism includes two motors 11, two the motor 11 is installed in the bottom of fixed disk 8, and the top of well dish 10 is rotated and is connected with interior ring gear 12, and the output fixedly connected with gear 13 of motor 11, two gear 13 meshes with interior ring gear 12, and two connecting strips 14 of the bottom fixedly connected with of interior ring gear 12, fixedly connected with clearance rod 15 on the connecting strip 14, the other end fixedly connected with clearance brush 16 of clearance rod 15.

Still further explain, the clearance mouth has all been seted up to the front end and the rear end of collecting inner shell 6, it is provided with baffle 17 to rotate in the clearance mouth, is convenient for take out the silt of concentrating the collection from collecting inner shell 6, two operating handle 18 of top fixedly connected with of fixed disk 8 are convenient for upwards mention collecting inner shell 6, be provided with TIN stiffened wear-resisting anticorrosive coating on the inner wall of coiled tubing blowout preventer body 1, be convenient for separate the inner wall of corrosive liquid and coiled tubing blowout preventer body and avoid corroding, it all sets up to the abrasive alloy material to collect outer shell 4 and collect inner shell 6, avoids collecting outer shell 4 and collecting damaged after inner shell 6 rubs many times, cleaning brush 16 is the corrosion-resistant rubber material, is convenient for carry the clearance effect of 16 clearance brill probe rod 2 of high clearance brush, collect outer shell 4 welding on intervalve 3, the welding not only joint strength is higher, and the operation is comparatively simple, and life is longer simultaneously, be provided with protective coating on collecting the inner wall of inner shell 6, be convenient for separate the silt of collecting inner shell 6.

The motor 11 in this embodiment is a conventional device purchased on the market and known to those skilled in the art, and the model can be selected or customized according to actual needs, and we only use it in this patent, and do not improve its structure and function, and its setting mode, installation mode and electrical connection mode, for those skilled in the art, as long as debug according to the requirements of its use specification, it is not repeated here, and the motor 11 is provided with a control switch matched with it, and the installation position of the control switch is selected according to the actual use requirements, so that the operator can operate and control conveniently.

Firstly, connect the positive and negative circuit of motor 11, this spray coating adds wear-resisting anticorrosive coating's coiled tubing preventer when using, probing pole 2 inserts from top to bottom, when carrying silt to get into collection inner shell 6 on probing pole 2, start motor 11, motor 11 drives gear 13 and rotates, gear 13 meshes inner ring 12 and rotates, inner ring 12 drives connecting strip 14 and rotates, connecting strip 14 drives clearance pole 15 and rotates, clearance pole 15 drives clearance brush 16 and rotates, clearance brush 16 is cleaned at probing pole 2 line, fall into collection inner shell 6 after brushing off the silt on probing pole 2, when needing to clear up, pulling operation handle 18, operation handle 18 drives the fixed plate and moves up, the fixed plate drives first connecting block 7 and moves up, first connecting block 7 drives and collects inner shell 6 and moves up, when clearance mouth moves out collection shell 4 upwards, baffle 17 loses the restriction and opens, will collect silt in the inner shell 6 and take out can.

The blowout preventer after the sprayed TIN hardened wear-resistant anticorrosive coating has the following characteristics: 1. the friction coefficient is as low as 0.4, so that the service life of the sealing element is effectively prolonged; 2. the surface nano-hardness reaches more than 2000HV, so that the adhesion and the pull damage of a dynamic seal workpiece are effectively avoided; 3. the oxidation resistance temperature is up to 500 ℃, the electrochemical corrosion in well fluid can be isolated, and the corrosion resistance is superior to that of stainless steel. 4. The thickness of 1-4 μm has extremely low influence on the precision of the product; 5. compared with the traditional surfacing nickel-based alloy, the method has the advantages of short spraying time and low material cost. 5. The use and maintenance cost of the oil field is reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a spraying adds continuous oil pipe preventer of wear-resisting anticorrosive coating, includes continuous oil pipe preventer body (1), its characterized in that still includes:

a drilling rod (2) is arranged in the coiled tubing blowout preventer body (1), the top end of the coiled tubing blowout preventer body (1) is communicated with a middle pipe (3), and a TIN hardened wear-resistant anticorrosive coating is arranged on the inner wall of the coiled tubing blowout preventer body (1);

the collecting mechanism comprises a collecting outer shell (4), the collecting outer shell (4) is communicated with the middle pipe (3), a leakage-proof ring (5) is fixedly connected to the inner bottom wall of the collecting outer shell (4), a collecting inner shell (6) is slidably connected to the collecting outer shell (4), two first connecting blocks (7) are fixedly connected to the top end of the collecting inner shell (6), a fixed disc (8) is fixedly connected to the other ends of the two first connecting blocks (7), two second connecting blocks (9) are fixedly connected to the fixed disc (8), and a middle disc (10) is fixedly connected to the other ends of the two second connecting blocks (9);

clearance mechanism, clearance mechanism includes two motors (11), two motor (11) are installed in the bottom of fixed disk (8), and the top of intermediate disk (10) is rotated and is connected with interior ring gear (12), output fixedly connected with gear (13) of motor (11), two gear (13) and interior ring gear (12) meshing, two connecting strip (14) of the bottom fixedly connected with of interior ring gear (12), fixedly connected with clearance pole (15) on connecting strip (14), the other end fixedly connected with clearance brush (16) of clearance pole (15).

2. The coiled tubing blowout preventer coated with the hardened wear-resistant anticorrosive coating according to claim 1, wherein the front end and the rear end of the collecting inner shell (6) are both provided with cleaning ports, and the cleaning ports are rotatably provided with baffles (17).

3. The coiled tubing blowout preventer with a hardened wear-resistant and corrosion-resistant coating according to claim 2, wherein two operating handles (18) are fixedly connected to the top end of the fixed disk (8).

4. The coiled tubing blowout preventer with a sprayed hardened wear-resistant and corrosion-resistant coating according to claim 1, wherein the collecting outer shell (4) and the collecting inner shell (6) are both made of wear-resistant alloy.

5. The coiled tubing blowout preventer as claimed in claim 1, wherein the cleaning brush (16) is of a corrosion resistant rubber material.

6. A coiled tubing blowout preventer coated with a hardened wear-resistant and corrosion-resistant coating according to claim 1, wherein the collecting housing (4) is welded to the intermediate pipe (3).

7. A coiled tubing blowout preventer coated with a hardened wear-resistant corrosion-resistant coating according to claim 1, wherein the inner wall of the inner collecting casing (6) is provided with a protective coating.