Pipe rod conveying device for oil field well repair

Abstract

The utility model discloses a pipe rod conveying device for oil field well repair, which belongs to the field of oil field drilling equipment and comprises a cableway conveyor and a second fixed pulley mounted on an external well repair machine, and the cableway conveyor is fixed on the ground and comprises a frame fixedly mounted on the ground. The conveyor comprises a rack, two first fixed pulleys which are arranged in a spaced mode are rotationally installed at the front end of the rack, a roller mechanism is rotationally installed in the rack, a steel wire rope is wound on the roller mechanism, and a hydraulic motor is installed outside the rack. An oil pipe is conveyed to a well mouth through a steel wire rope connected with the workover rig, the conveyor is connected into a hydraulic power source from the workover rig, a hydraulic motor on the conveyor is controlled by a remote controller, and a worker can ascend and descend the oil pipe only by standing in a distance and pressing the remote controller.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield drilling equipment technical field especially relates to a pipe stem conveying device for oilfield workover. BACKGROUND

[0002] When oilfield workover, the wellhead is higher than the ground, the oil pipe needs to be conveyed from the bottom to the wellhead, the oil pipe is very heavy, manual carrying is not only dangerous, but also laborious, and time-consuming, at this time, a device that can convey the oil pipe to the wellhead is needed. The existing pipe stem conveying device for oilfield workover is suitable for drilling in soil or rock and engineering instruments for extracting oil, gas, water, soluble or meltable substances or mineral mud from the well.

[0003] The existing pipe stem conveying device for oilfield workover is bulky and heavy, difficult to hoist and install, and has poor adaptability to uneven ground. The friction between the steel wire rope and the roller is serious, and manual lubricating oil needs to be applied frequently, which is troublesome to maintain and has no lasting effect. The rope cable is easy to wear and tear, and the existing conveyor is bulky, inconvenient to carry, not symmetrical in itself, unstable in center of gravity, and difficult to hoist and install. To solve the above problems, we propose a pipe stem conveying device for oilfield workover. SUMMARY

[0004] The utility model aims at solving the problems of the pipe stem conveying device in the prior art, such as bulky and heavy, difficult to hoist and install, poor adaptability to uneven ground, serious friction between the steel wire rope and the roller, manual lubricating oil needs to be applied frequently, troublesome to maintain and no lasting effect, and the existing conveyor is bulky, inconvenient to carry, not symmetrical in itself, unstable in center of gravity, and difficult to hoist and install, and proposes a pipe stem conveying device for oilfield workover.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A pipe stem conveying device for oilfield workover, comprising a cableway conveyor and a second fixed pulley installed on an external workover machine, the cableway conveyor is fixed on the ground, the cableway conveyor comprises a rack fixedly installed on the ground, two first fixed pulleys are rotatably installed at the front end of the rack, a roller mechanism is rotatably installed in the rack, a steel wire rope is wound on the roller mechanism, a hydraulic motor is installed outside the rack, the hydraulic motor takes a hydraulic power source from the external workover machine, the steel wire rope forms a working closed loop through the two first fixed pulleys on the cableway conveyor and the second fixed pulley on the external workover machine, a fixed frame is installed on the steel wire rope, and a hook is fixedly installed on the fixed frame.

[0007] As a preferred scheme, the bottom of the frame is provided with a plurality of height-adjustable supporting legs connected with the frame through screw structures, and the levelness and height of the frame can be adjusted by rotating the supporting legs to adapt to the installation requirements of different terrains.

[0008] As a preferred scheme, the drum mechanism comprises a drum shaft and a drum body fixedly installed at one end of the drum shaft, the drum body is rotatably installed on the frame through bearings, and the drum shaft is connected with the power end of the hydraulic motor.

[0009] As a preferred scheme, the drum body is provided with rope blocking plates at both ends, the rope blocking plates are fixedly installed on the drum body and used for preventing the steel wire rope from sliding off from both ends of the drum body during winding.

[0010] As a preferred scheme, the drum body is internally provided with a cavity, the cavity is internally provided with lubricating liquid, the outer surface of the drum body is provided with a plurality of uniformly distributed anti-skid patterns, the anti-skid patterns are transversely distributed, a plurality of uniformly distributed liquid discharge holes are formed in the drum body and communicated with the cavity, a cover is fixedly installed at one end of the drum body, an air bag is arranged in the cavity, a guide pipe is communicated with and fixedly connected to the air inlet end of the air bag, the guide pipe penetrates through and is fixedly connected with the cover, a suction pump is fixedly installed on the frame, and the exhaust pipe of the suction pump is communicated with the guide pipe and rotatably installed in the guide pipe.

[0011] As a preferred scheme, a sealing ring is arranged between the cover and the drum body.

[0012] As a preferred scheme, a receiving groove is arranged below the drum body and placed on the frame.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The conveyor described in the patent can be placed on the ground outside the well repair operation area, the oil pipe is conveyed to the well mouth through the steel wire rope connected with the well repair machine, the hydraulic power source is connected to the conveyor from the well repair machine, the hydraulic motor on the conveyor is controlled by the remote controller, and the worker only needs to press the remote controller to realize the lifting and lowering of the oil pipe. The structure is optimized, the volume of the existing conveyor is reduced, the symmetry of the two sides is optimized, and the hoisting and installation difficulty of the oil pipe conveying is reduced.

[0015] 2. The conveying device of the application can easily adjust the levelness and height through the bottom adjustable supporting legs, can quickly adapt to various uneven terrains in the wild, and the innovative cavity air bag design realizes the automatic and uniform penetration of the lubricating liquid through the control of the suction pump, continuous lubrication, avoids the steel wire rope from jumping through the rope blocking plate, avoids the steel wire rope from slipping through the anti-skid patterns, and prolongs the service life of the steel wire rope and the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model provides a kind of pipe stem conveying device for oilfield workover of structure diagram Figure 1 ;

[0017] Figure 2 The utility model provides a kind of pipe stem conveying device for oilfield workover of structure diagram Figure 2 ;

[0018] Figure 3 For the utility model proposes a kind of pipe stem conveying device for oilfield workover in cableway conveyor structure diagram;

[0019] Figure 4 For the utility model proposes a kind of pipe stem conveying device for oilfield workover in the structure diagram of hook;

[0020] Figure 5 For the utility model proposes a kind of pipe stem conveying device for oilfield workover in the structure diagram of drum mechanism Figure 1 ;

[0021] Figure 6 For the utility model proposes a kind of pipe stem conveying device for oilfield workover in the structure diagram of drum mechanism Figure 2 ;

[0022] Figure 7 For the utility model proposes a kind of pipe stem conveying device for oilfield workover in the sectional view of drum mechanism.

[0023] In the drawing: 1, cableway conveyor;101, rack;102, first fixed pulley;103, drum mechanism;104, steel wire rope;105, hydraulic motor;2, fixed frame;3, hook;4, second fixed pulley;5, drum shaft;6, drum body;7, rope baffle;8, non-slip pattern;9, liquid discharge hole;10, cover;11, sealing ring;12, air bag;13, catheter;14, suction pump;15, storage groove. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without doing creative work belong to the range of the utility model protection.

[0025] Embodiment one, refer to Figures 1-7The utility model provides a kind of pipe stem conveying device for oilfield workover, including cableway conveyor 1 and second fixed pulley 4 installed on external workover unit, cableway conveyor 1 is fixed on ground, cableway conveyor 1 includes rack 101 fixedly installed on ground, two first fixed pulleys 102 are rotationally installed at the front end of rack 101, drum mechanism 103 is rotationally installed in rack 101, steel wire rope 104 is wound on drum mechanism 103, hydraulic motor 105 is installed outside rack 101, and hydraulic motor 105 obtains hydraulic power source from external workover unit, steel wire rope 104 forms a working closed loop with second fixed pulley 4 on external workover unit by passing through two first fixed pulleys 102 on cableway conveyor 1, and fixed frame 2 is installed on steel wire rope 104, and hook 3 is fixedly installed on fixed frame 2.Drum mechanism 103 includes drum shaft 5 and drum body 6 fixedly installed at one end of drum shaft 5, and drum body 6 is rotationally installed on rack 101 by bearing, and drum shaft 5 is connected with power end of hydraulic motor 105.

[0026] Working principle: when conveyor works, hydraulic motor 105 drives drum body 6 to rotate, while steel wire rope 104 moves to drive hook 3 to move, and hook 3 is hung on one side of oil pipe, when hook 3 moves, horizontal direction thrust is applied to oil pipe, under the action of the thrust, oil pipe slides up along catwalk, so that the other side of oil pipe slides up on catwalk to platform.Catwalk is the channel for placing and conveying oil pipe in workover operation, and generally has a certain inclination angle, so that oil pipe can be smoothly slid to platform under the joint action of gravity and thrust of hook 3, to complete the conveying operation of oil pipe.

[0027] The conveyor described in the utility model can be placed on ground outside workover operation area, and oil pipe is conveyed to wellhead by steel wire rope 104 connected with workover unit, and the utility model itself is connected with hydraulic power source from workover unit, and hydraulic motor 105 on conveyor is controlled by remote controller, and worker only needs to stand far away and press remote controller to realize the rising and falling of oil pipe.The structure is optimized, the volume of existing conveyor is reduced, and the symmetry of two sides is optimized.

[0028] The conveying device of the application saves labor and reduces labor cost; the conveyor described in the utility model only needs one person to hang hook 3 on oil pipe, and the rising and falling of oil pipe can be realized by pressing remote controller of conveyor, labor intensity is reduced, and multiple people are no longer needed to lift heavy oil pipe of hundreds of kilograms, and only button of remote controller needs to be pressed.Worker is far away from wellhead, safety factor is higher, and work is safer.Working efficiency is improved, heavy physical labor is replaced by conveyor, worker works more easily, the weight of equipment is reduced, the gravity center of equipment is ensured, and hoisting and installation are more convenient and humanized.

[0029] Based on embodiment one, embodiment two is provided:

[0030] The bottom of the frame 101 is provided with a plurality of adjustable height feet, which are connected to the frame 101 through a threaded structure. By rotating the feet, the levelness and height of the frame 101 can be adjusted to adapt to the installation requirements of different terrains. The drum body 6 is provided with rope blocking plates 7 at both ends, which are fixedly installed on the drum body 6 and used to prevent the steel wire rope 104 from sliding off the ends of the drum body 6 during winding.

[0031] The drum body 6 is internally provided with a cavity, which is filled with lubricating liquid. The outer surface of the drum body 6 is provided with a plurality of evenly distributed anti-skid patterns 8, which are distributed transversely. A plurality of evenly distributed liquid discharge holes 9 are formed in the drum body 6, which are in communication with the cavity. A cover 10 is fixedly installed at one end of the drum body 6. An air bag 12 is arranged in the cavity. The air inlet end of the air bag 12 is connected with a conduit 13, which penetrates through and is fixedly connected with the cover 10. A suction pump 14 is fixedly installed on the frame 101. The exhaust pipe of the suction pump 14 is in communication with the conduit 13 and is rotatably installed in the conduit 13. A sealing ring 11 is arranged between the cover 10 and the drum body 6. A storage groove 15 is arranged below the drum body 6 and placed on the frame 101.

[0032] The drum body 6 is internally provided with a cavity, which is used to store lubricating liquid. Before the equipment is used, an appropriate amount of lubricating liquid is injected into the cavity to provide a material basis for subsequent lubrication work.

[0033] An air bag 12 is arranged in the cavity. The air inlet end of the air bag 12 is connected with the suction pump 14 fixedly installed on the frame 101 through the conduit 13. When the suction pump 14 is working, the air bag 12 is gradually inflated by the air inlet through the exhaust pipe. With the inflation of the air bag 12, it will squeeze the lubricating liquid in the cavity, so that the lubricating liquid is subjected to pressure.

[0034] A plurality of evenly distributed liquid discharge holes 9 are formed in the drum body 6 and are in communication with the cavity. Under the action of the pressure generated by the air bag 12 squeezing the lubricating liquid, the lubricating liquid will flow out of the liquid discharge holes 9 and drop onto the outer surface of the drum body 6. When the steel wire rope 104 is wound or released on the drum body 6, the flowing lubricating liquid can reduce the friction between the steel wire rope 104 and the drum body 6, reduce wear and tear, prolong the service life of the steel wire rope 104 and the drum body 6, and at the same time ensure the smoothness of the movement of the steel wire rope 104.

[0035] In the process of moving the steel wire rope 104 by the drum body 6, the anti-skid patterns 8 can increase the friction between the outer surface of the drum body 6 and the steel wire rope 104. In this way, even if a larger load is encountered during work or the equipment is subjected to a certain vibration, the phenomenon of slipping of the steel wire rope 104 on the drum body 6 can be effectively prevented, ensuring that the steel wire rope 104 can stably and reliably move with the rotation of the drum body 6, thereby ensuring the normal operation of the entire pipe rod conveying device.

[0036] The sealing ring 11 can play a good sealing effect to prevent the lubricating liquid in the cavity from leaking out from the joint of the cover 10 and the drum body 6. In this way, the amount of the lubricating liquid in the cavity can be ensured stable, the normal lubricating effect can be maintained, and the lubricating liquid leakage can be avoided to cause pollution or damage to other parts of the equipment.

[0037] During the lubricating process, part of the lubricating liquid may flow out from the drain hole 9, not completely adhere to the steel wire rope 104, but drip to the surrounding environment. The receiving groove 15 is used to collect the dripping lubricating liquid, prevent the lubricating liquid from flowing randomly to pollute the working environment around the equipment, and also facilitate the centralized treatment and recycling of the used lubricating liquid to reduce the use cost.

[0038] The exhaust pipe of the suction pump 14 is communicated with the guide pipe 13 and is rotatably installed in the guide pipe 13. During the rotation of the drum body 6, the guide pipe 13 rotates with the drum body 6, and the suction pump 14 is fixedly installed on the rack 101 to remain stationary. The rotatable design of the guide pipe 13 and the exhaust pipe of the suction pump 14 can rotate relative to each other, which can ensure that the suction pump 14 can normally inflate the air bag 12, does not affect the normal rotation of the drum body 6, and ensures that the entire lubricating system can work stably and reliably.

[0039] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pipe and rod conveying device for oilfield well repair, characterized in that: The invention comprises a cableway conveyor (1) and a second fixed pulley (4) installed on an external well repair rig, wherein the cableway conveyor (1) is fixed on the ground, and the cableway conveyor (1) comprises a frame (101) fixed on the ground, wherein two first fixed pulleys (102) arranged at intervals are rotatably installed at the front end of the frame (101), a roller mechanism (103) is rotatably installed inside the frame (101), and a steel wire rope (104) is wound on the roller mechanism (103), and a hydraulic motor (105) is installed outside the frame (101), wherein the hydraulic motor (105) obtains a hydraulic power source from the external well repair rig, and the steel wire rope (104) forms a working closed loop with the second fixed pulley (4) on the external well repair rig through the two first fixed pulleys (102) on the cableway conveyor (1), and a fixed frame (2) is fixedly installed on the fixed frame (2).

2. The pipe and rod conveying device for oilfield well repair according to claim 1, characterized in that: The bottom of the rack (101) is provided with a plurality of height-adjustable supporting feet, which are connected to the rack (101) via a threaded structure. The horizontality and height of the rack (101) can be adjusted by rotating the supporting feet to adapt to installation requirements in different terrains.

3. The pipe and rod conveying device for oilfield well repair according to claim 1, characterized in that: The roller mechanism (103) comprises a roller shaft (5) and a roller body (6) fixedly mounted on one end of the roller shaft (5); the roller body (6) is rotatably mounted on the frame (101) via a bearing; and the roller shaft (5) is connected to the power end of the hydraulic motor (105).

4. The pipe and rod conveying device for oilfield well repair according to claim 3, characterized in that: Rope retaining plates (7) are provided at both ends of the drum body (6). The rope retaining plates (7) are fixedly mounted on the drum body (6) and are used to prevent the steel wire rope (104) from sliding off the two ends of the drum body (6) during the winding process.

5. The pipe and rod conveying device for oilfield well repair according to claim 3, characterized in that: A cavity is provided inside the roller body (6), and lubricating liquid is filled inside the cavity. A plurality of evenly distributed anti-skid patterns (8) are provided on the outer surface of the roller body (6), and the anti-skid patterns (8) are distributed transversely. A plurality of evenly distributed drainage holes (9) are opened on the roller body (6), and the drainage holes (9) are connected to the cavity. A cover (10) is fixedly installed at one end of the roller body (6), and an air bag (12) is provided in the cavity. The air inlet end of the air bag (12) is connected and fixedly connected to a conduit (13), and the conduit (13) passes through the cover (10) and is fixedly connected to the cover (10). A suction pump (14) is fixedly installed on the frame (101), and an exhaust pipe of the suction pump (14) is connected to the conduit (13) and is rotatably installed in the conduit (13).

6. The pipe and rod conveying device for oilfield well repair according to claim 5, characterized in that: A sealing ring (11) is provided between the sealing cover (10) and the drum body (6).

7. The pipe and rod conveying device for oilfield well repair according to claim 5, characterized in that: A receiving groove (15) is provided below the drum body (6), and the receiving groove (15) is placed on the frame (101).

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