Petroleum well drill rod sealing performance detection device

Abstract

The utility model relates to the technical field of drill rod sealing performance detection, in particular to a petroleum well drill rod sealing performance detection device, which comprises a water supply mechanism, a supporting mechanism arranged on the rear side of the water supply mechanism and used for supporting a drill rod, and a plugging mechanism, the water supply mechanism is positioned on the front side of the plugging mechanism, and the supporting mechanism is positioned on the inner side of the plugging mechanism. The second conical plug is driven by the moving frame to move to clamp and fix the drill rod to be detected between the first conical plug and the second conical plug, so that the plugging operation during the detection of the drill rod is completed, and the plugging operation of the drill rods with different diameters is rapidly completed through the conical surfaces of the first conical plug and the second conical plug. The water level height in the water tank is adjusted through the water supply mechanism, so that the drill rod is immersed in water during detection, and the position where the drill rod is poor in sealing performance can be conveniently observed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the sealing detection of drill pipe, in particular to a petroleum well drill pipe sealing detection device. BACKGROUND

[0002] Through the patent file with the announcement number CN221925523U, the both ends of the petroleum well drill pipe are respectively installed with the outer thread sealing cap and the inner thread sealing cap, the hose is connected with the air pump and the quick connector, then the air pump is started to rush into a certain pressure air into the petroleum well drill pipe, and the uniform soap water is sprayed on the outside of the petroleum well drill pipe, so that whether the outside of the petroleum well drill pipe appears the severe air injection condition is observed, and then whether the petroleum well drill pipe has the leakage point is judged.

[0003] When the patent file detects the petroleum well drill pipe, since the whole drill pipe is in the horizontal state, the sprayed soap water flows down along the outer wall of the drill pipe due to the action of gravity, and the soap water on the outside of the drill pipe stays for a short time in the process, so that continuous spraying is needed, which is relatively wasteful, and for some small leakage points, some bubbles are generated along with the flow of soap water when spraying, which is very inconvenient to observe; in addition, if the change of the pressure in the drill pipe is observed to judge the leakage point, the required time is relatively long, and the leakage point cannot be found directly and quickly, so that the sealing effect of the petroleum drill pipe cannot be detected quickly, in addition, the outer thread sealing cap and the inner thread sealing cap are used to block the two ends of the drill pipe, and for the drill pipes of different diameters, different sizes of inner and outer thread sealing caps need to be provided, which is very cumbersome and inconvenient when detecting, installing and dismounting. UTILITY MODEL CONTENTS

[0004] The utility model discloses a petroleum well drill pipe sealing detection device can be provided to solve the above -mentioned problem.

[0005] The utility model discloses a petroleum well drill pipe sealing detection device can be provided to solve the above -mentioned problem.

[0006] A petroleum well drill pipe sealing detection device, including water supply mechanism, the rear side of water supply mechanism is equipped with the support mechanism for supporting the drill pipe, still including the plugging mechanism, and water supply mechanism is located at the front side of plugging mechanism, and the support mechanism is located at the inner side of plugging mechanism;

[0007] The plugging mechanism includes a water tank, a fixed frame is fixed to one end of the water tank, a first tapered plug is movably connected to the middle of the fixed frame, a movable frame is slidably connected to the other side of the water tank, a second tapered plug is movably connected to the middle of the movable frame, a drive mechanism is arranged on the lower side of the movable frame for driving the movable frame, a gas hole is formed through the center of the second tapered plug, and a pneumatic rotary joint is fixed to one end of the second tapered plug away from the drill pipe, and a gas supply assembly is arranged on the other end of the pneumatic rotary joint for pressing into the drill pipe.

[0008] Preferably, the pneumatic rotary joint is in communication with the air hole of the second conical plug, one end of the arc-shaped water tank is fixed with an air cylinder, and the telescopic part of the air cylinder is fixed with a water pushing plate located at the inner end of the arc-shaped water tank.

[0009] Preferably, the driving mechanism comprises a screw rod and a guide rod, the screw rod is located at the front side of the guide rod, both ends of the screw rod are rotationally connected to both end positions inside the water tank, both ends of the guide rod are fixedly connected to both side positions inside the water tank, and the input end of the screw rod is fixedly provided with a driving motor.

[0010] Preferably, the air supply assembly comprises an air supply pipe, one end of the air supply pipe is fixedly connected with the pneumatic rotary joint, the other end of the air supply pipe is fixedly connected with a three-way pipe, the front end of the three-way pipe is fixedly connected with a pressure gauge, the rear end of the three-way pipe is fixedly connected with a valve, and the rear end of the valve is fixedly connected with an air pump.

[0011] Preferably, the water supply mechanism comprises an arc-shaped water tank, the arc-shaped water tank is fixed at the front side of the water tank, a square water outlet pipe is arranged at the rear side of the other end of the arc-shaped water tank, the water outlet pipe is in communication with the water tank, and rubber sealing gaskets are wrapped on the conical surfaces of the first conical plug and the second conical plug.

[0012] Preferably, the supporting mechanism comprises a support, the lower end of the support is fixedly connected with the bottom of the water tank, a rotating roller is rotationally connected to the middle position of the upper end of the support, a driving motor is fixedly arranged at the input end of the rotating roller, flip arms are rotationally connected to the front and rear sides of the support, a sliding seat is slidingly connected to the lower side of the support, a spring for pushing the sliding seat upward is arranged at the bottom of the sliding seat, and connecting rods are slidingly connected to the front and rear sides of the sliding seat.

[0013] Preferably, a clamping roller is rotationally connected to the upper end of each flip arm, and the upper end of each connecting rod is rotationally connected with the corresponding flip arm.

[0014] Compared with the prior art, the beneficial effects are as follows:

[0015] 1. The second conical plug is moved by the moving frame to clamp and fix the drill rod to be detected between the first conical plug and the second conical plug, thereby completing the plugging operation during drill rod detection, and the conical surfaces of the first conical plug and the second conical plug are used to quickly complete the plugging operation of drill rods of different diameters, improve the convenience of the entire drill rod detection sealing performance, and are easier to operate.

[0016] 2. The water level in the water tank is adjusted by the water supply mechanism, so that the drill rod is immersed in water during detection, thereby facilitating the observation of the position of poor drill rod sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 is a perspective view of the oil well drill pipe sealing detection device of the present application;

[0019] Figure 2 is a front view of the oil well drill pipe sealing detection device of the present application;

[0020] Figure 3 is Figure 2 is a sectional view of A-A in FIG.

[0021] Figure 4 is Figure 2 is a sectional view of F-F in FIG.

[0022] Figure 5 is a driving mechanism structure schematic view of the oil well drill pipe sealing detection device of the present application;

[0023] Figure 6 is a gas supply assembly structure schematic view of the oil well drill pipe sealing detection device of the present application;

[0024] Figure 7 is a support structure schematic view of the oil well drill pipe sealing detection device of the present application;

[0025] Figure 8 is a sliding seat, connecting rod and turnover arm structure schematic view of the oil well drill pipe sealing detection device of the present application;

[0026] Figure 9 is a support mechanism structure schematic view of the oil well drill pipe sealing detection device of the present application.

[0027] The following is the explanation of the reference signs:

[0028] 1. Sealing mechanism; 2. Water supply mechanism; 3. Drive mechanism; 4. Air pump; 5. Valve; 6. Support mechanism; 7. T-pipe; 8. Air supply pipe; 9. Pneumatic rotary joint; 11. Water tank; 12. Fixing frame; 13. First conical plug; 14. Moving frame; 15. Second conical plug; 21. Cylinder; 22. Push plate; 23. Arc-shaped water tank; 31. Drive motor; 32. Screw; 33. Guide rod; 61. Bracket; 62. Rotating roller; 63. Rotating motor; 64. Sliding seat; 65. Connecting rod; 66. Tilting arm; 67. Clamping roller. Detailed Implementation

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figures 1-9 As shown, an oil well drill pipe sealing test device includes a water supply mechanism 2, a support mechanism 6 for supporting the drill pipe is provided on the rear side of the water supply mechanism 2, and a sealing mechanism 1 is also included. The water supply mechanism 2 is located on the front side of the sealing mechanism 1, and the support mechanism 6 is located on the inner side of the sealing mechanism 1.

[0032] In this embodiment: the sealing mechanism 1 includes a water tank 11, a fixed frame 12 is fixed at one end of the water tank 11, a first conical plug 13 is movably connected to the middle of the fixed frame 12, a movable frame 14 is slidably connected to the other side of the water tank 11, a second conical plug 15 is movably connected to the middle of the movable frame 14, a drive mechanism 3 for moving the movable frame 14 is provided on the lower side, an air hole is penetrating the center of the second conical plug 15, a pneumatic rotary joint 9 is fixed at the end of the second conical plug 15 away from the drill rod, and a pneumatic rotary joint 9 is provided at the other end. An air supply assembly for pressing into the drill rod is used. The pneumatic rotary joint 9 is connected to the air hole of the second conical plug 15. A cylinder 21 is fixed at one end of the arc-shaped water tank 23. A pusher plate 22 is fixed at the telescopic part of the cylinder 21. The pusher plate 22 is located at one end inside the arc-shaped water tank 23. The first conical plug 13 on the fixed frame 12 is used to seal one end of the drill rod. At the same time, the second conical plug 15 on the movable frame 14 is used to seal the other end of the drill rod. The position of the movable frame 14 can be adjusted according to the length of the drill rod, and then the sealing test of the drill rod is completed.

[0033] In the embodiment, the driving mechanism 3 comprises a screw rod 32 and a guide rod 33, the screw rod 32 is located in front of the guide rod 33, both ends of the screw rod 32 are rotationally connected to the both end positions inside the sink 11, both ends of the guide rod 33 are fixedly connected to the both side positions inside the sink 11, the input end of the screw rod 32 is fixedly provided with a driving motor 31, the driving motor 31 is used for driving the screw rod 32 to rotate, the moving frame 14 is driven to move along the fixed frame 12 and the bottom of the sink 11 through the rotation of the screw rod 32, and then the position of the second tapered plug 15 can be adjusted according to the length of the drill rod, so that the second tapered plug 15 can abut against the two matched drill rod end portions.

[0034] In the embodiment, the gas supply assembly comprises a gas supply pipe 8, one end of the gas supply pipe 8 is fixedly connected with a pneumatic rotary joint 9, the other end of the gas supply pipe 8 is fixedly connected with a tee pipe 7, the front end of the tee pipe 7 is fixedly connected with a pressure gauge, the rear end of the tee pipe 7 is fixedly connected with a valve 5, the rear end of the valve 5 is fixedly connected with a gas pump 4, the gas pump 4 is used for sending gas to the tee pipe 7, at this time, the tee pipe 7 sends the gas into the air hole of the second tapered plug 15 through the gas supply pipe 8 and the pneumatic rotary joint 9, then the gas enters the drill rod blocked at both ends through the air hole in the second tapered plug 15, then the valve 5 can be closed to keep the gas in the drill rod at a certain pressure, and then the pressure change of the gas in the drill rod can be observed within a certain time, so as to judge the sealing performance of the drill rod.

[0035] In the embodiment, the water supply mechanism 2 comprises an arc-shaped water tank 23, the arc-shaped water tank 23 is fixed to the front side of the sink 11, a square-shaped water outlet pipe is arranged on the other end of the arc-shaped water tank 23, the water outlet pipe is in communication with the sink 11, the tapered surfaces of the first tapered plug 13 and the second tapered plug 15 are wrapped with rubber sealing pads, the water plate 22 is driven to move in the arc-shaped water tank 23 by the extension part of the cylinder 21, so as to send the water in the arc-shaped water tank 23 into the sink 11 through the water outlet pipe, so that the water in the sink 11 can immerse the blocked drill rod, and when the gas with a certain pressure is injected into the drill rod, whether the bubbles are emitted from the outside of the drill rod can be observed directly, and then the position of the drill rod with the leakage point can be judged.

[0036] In the embodiment, the supporting mechanism 6 comprises a support 61, the lower end of the support 61 is fixedly connected with the bottom of the water tank 11, the middle position of the upper end of the support 61 is rotationally connected with a rotating roller 62, the input end of the rotating roller 62 is fixedly provided with a rotating motor 63, the front and rear sides of the support 61 are both rotationally connected with a turnover arm 66, the lower side of the support 61 is slidingly connected with a sliding seat 64, the bottom of the sliding seat 64 is provided with a spring for pushing the sliding seat 64 upward, the front and rear sides of the sliding seat 64 are both slidingly connected with a connecting rod 65, the upper end of each connecting rod 65 is rotationally connected with the corresponding turnover arm 66, the upper end of each turnover arm 66 is rotationally connected with a clamping roller 67, the two turnover arms 66 are pried apart to make the upper ends of the two turnover arms 66 away from each other, the two connecting rods 65 are used to make the sliding seat 64 move downward, and the spring at the bottom of the sliding seat 64 is compressed, then the drill pipe to be detected for the sealing property is placed on the rotating roller 62, then the turnover arms 66 are loosened, at this time, the spring at the bottom of the sliding seat 64 pushes the sliding seat 64 to move upward along the support 61, the movement of the sliding seat 64 pushes the connecting rods 65 to make the upper ends of the two turnover arms 66 close to each other, then the clamping rollers 67 at the upper ends of the turnover arms 66 clamp the drill pipe, and when the drill pipe is detected for the sealing property, the rotating motor 63 drives the rotating roller 62 to rotate to drive the drill pipe to rotate, so that the drill pipe rotates in the water to find the position with poor sealing property.

[0037] Working principle: when the drill pipe is detected for the sealing property, first, the two turnover arms 66 are pried apart to make the upper ends of the two turnover arms 66 away from each other, the two connecting rods 65 are used to make the sliding seat 64 move downward, and the spring at the bottom of the sliding seat 64 is compressed, then the drill pipe to be detected for the sealing property is placed on the rotating roller 62, then the position of the drill pipe on the rotating roller 62 is adjusted, so that one end of the drill pipe abuts against the conical surface of the first conical plug 13, at the same time, the rotating part of the driving motor 31 drives the screw rod 32 to rotate, the rotation of the screw rod 32 drives the moving frame 14 to move along the fixed frame 12 and the bottom of the water tank 11, so that the conical surface of the second conical plug 15 abuts against the other end of the drill pipe, then the turnover arms 66 are loosened, at this time, the spring at the bottom of the sliding seat 64 pushes the sliding seat 64 to move upward along the support 61, the movement of the sliding seat 64 pushes the connecting rods 65 to make the upper ends of the two turnover arms 66 close to each other, then the clamping rollers 67 at the upper ends of the turnover arms 66 clamp the drill pipe;

[0038] Then through the air pump 4 to tee 7 air, tee 7 will be gas through the air supply pipe 8 and pneumatic rotary joint 9 into the gas hole of the second tapered plug 15, and the gas will be through the gas hole in the second tapered plug 15 into the two end sealing drill pipe, when the pressure on the pressure gauge on the tee 7 pressure at the corresponding pressure value, then can close the valve 5 to make the drill pipe to maintain a certain pressure of the gas, the pressure of the gas in the drill pipe is observed within a certain time, so as to determine the sealing of the drill pipe, while closing the valve 5, the use of cylinder 21 telescopic part push water plate 22 in the arc water tank 23 moves, so as to send the water in the arc water tank 23 through the water outlet pipe into the water tank 11, make the water in the water tank 11 immersion sealing drill pipe, so that the drill pipe in the water when the pressure of the gas, can be intuitive to observe whether there is a bubble from the drill pipe outside, in addition, through the rotation of the motor 63 drive roller 62 rotation to drive the drill pipe rotation, so that the drill pipe in the water to facilitate the discovery of the poor position of the drill pipe sealing, and can quickly determine the drill pipe in which position there is a leak point;

[0039] After the detection is completed, the cylinder 21 telescopic part drive water plate 22 to one side, so as to suck the water in the water tank 11 through the water outlet pipe into the arc water tank 23, so that the water level in the water tank 11 falls, in turn can make the drill pipe exposed to the water surface, and through the moving frame 14 drive the second tapered plug 15 to move away from the first tapered plug 13 direction, so as to can quickly separate the drill pipe both ends of the sealing and disassembly;

[0040] In addition, the whole drill pipe sealing detection, rely on two tapered structure of the first tapered plug 13 and the second tapered plug 15 will be clamped between the position of the drill pipe, immediately complete the sealing of both ends of the drill pipe, and for different diameter of the drill pipe sealing detection, can complete the sealing, and in disassembly, can directly move the position of the second tapered plug 15, namely the drill pipe can be removed, reduce the cumbersome steps of disassembly and installation, and can also speed up the whole drill pipe disassembly and installation speed.

[0041] The above shows and describes the basic principles, main features and advantages of the present application. The skilled in the art should understand that the present application is not limited to the above examples, the above examples and the description described in the specification is only to illustrate the principle of the present application, without departing from the spirit and scope of the present application, the present application will have various changes and improvements, these changes and improvements all fall within the scope of the present application.

Claims

1. A drilling pipe sealing test device for oil wells, comprising a water supply mechanism (2), wherein a support mechanism (6) for supporting the drilling pipe is provided on the rear side of the water supply mechanism (2), characterized in that: It also includes a blocking mechanism (1), the water supply mechanism (2) is located in front of the blocking mechanism (1), and the support mechanism (6) is located inside the blocking mechanism (1); The sealing mechanism (1) includes a water tank (11), a fixed frame (12) is fixed at one end of the water tank (11), a first conical plug (13) is movably connected to the middle of the fixed frame (12), a movable frame (14) is slidably connected to the other side of the water tank (11), a second conical plug (15) is movably connected to the middle of the movable frame (14), a driving mechanism (3) for moving the movable frame (14) is provided on the lower side, an air hole is penetrating the center of the second conical plug (15), a pneumatic rotary joint (9) is fixed at the end of the second conical plug (15) away from the drill rod, and an air supply component for pressing into the drill rod is provided at the other end of the pneumatic rotary joint (9).

2. The oil well drill pipe sealing performance testing device according to claim 1, characterized in that: The pneumatic rotary joint (9) is connected to the air hole of the second conical plug (15), and the conical surfaces of the first conical plug (13) and the second conical plug (15) are covered with rubber sealing gaskets.

3. The oil well drill pipe sealing detection device according to claim 1, characterized in that: The drive mechanism (3) includes a screw (32) and a guide rod (33). The screw (32) is located in front of the guide rod (33). Both ends of the screw (32) are rotatably connected to the two ends inside the water tank (11). Both ends of the guide rod (33) are fixedly connected to the two sides inside the water tank (11). A drive motor (31) is fixedly installed at the input end of the screw (32).

4. The oil well drill pipe sealing performance testing device according to claim 2, characterized in that: The air supply assembly includes an air supply pipe (8), one end of which is fixedly connected to a pneumatic rotary joint (9), and the other end of which is fixedly connected to a three-way pipe (7). A pressure gauge is fixedly connected to the front end of the three-way pipe (7), and a valve (5) is fixedly connected to the rear end of the three-way pipe (7). An air pump (4) is fixedly connected to the rear end of the valve (5).

5. The oil well drill pipe sealing performance testing device according to claim 1, characterized in that: The water supply mechanism (2) includes an arc-shaped water tank (23), which is fixed to the front side of the water tank (11). A square water outlet pipe is provided on the rear side of the other end of the arc-shaped water tank (23), and the water outlet pipe is connected to the water tank (11). A cylinder (21) is fixed to one end of the arc-shaped water tank (23), and a pusher plate (22) is fixed to the telescopic part of the cylinder (21). The pusher plate (22) is located at one end inside the arc-shaped water tank (23).

6. The oil well drill pipe sealing performance testing device according to claim 1, characterized in that: The support mechanism (6) includes a bracket (61), the lower end of which is fixedly connected to the bottom of the water tank (11). A rotating roller (62) is rotatably connected to the middle position of the upper end of the bracket (61). A rotating motor (63) is fixedly installed at the input end of the rotating roller (62). A flipping arm (66) is rotatably connected to both the front and rear sides of the bracket (61). A sliding seat (64) is slidably connected to the lower side of the bracket (61). A spring is provided at the bottom of the sliding seat (64) for pushing it upward. A connecting rod (65) is slidably connected to both the front and rear sides of the sliding seat (64).

7. The oil well drill pipe sealing performance testing device according to claim 6, characterized in that: Each tilting arm (66) is rotatably connected to a clamping roller (67) at its upper end, and the upper end of each link (65) is rotatably connected to the corresponding tilting arm (66).

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