A wellhead flow guide groove cleaning device

Abstract

This utility model belongs to the technical field of surface auxiliary equipment for oilfield drilling and workover, specifically relating to a wellhead guide channel cleaning device. It includes a scraper, slider, slide rail, power support, traction wire rope and wire rope drum, and a power motor. Slide rails are respectively installed at the top of the channel walls on both sides. A scraper rotation shaft is connected to the top of the scraper, and a slider is connected to each end of the scraper rotation shaft. Each slider is slidably connected to a slide rail on one side. The lower end face of the scraper is close to the bottom of the guide channel. A scraper rocker arm is connected to one end of the scraper rotation shaft. A rope hole is provided on the scraper rotation shaft, and one end of the traction wire rope is connected to the rope hole, while the other end is connected to the wire rope drum. The lower part of the power support is horizontally fixed to the top of the downstream outlet of the guide channel, and the upper part of the power support has the wire rope drum and power motor fixed side-by-side. The main shaft of the power motor is synchronously connected to the main shaft of the wire rope drum. This device significantly reduces manual labor intensity and greatly improves the safety and environmental performance of equipment construction.

Description

Technical Field

[0001] This utility model belongs to the technical field of surface auxiliary equipment for oilfield drilling and well repair, and specifically relates to a wellhead guide channel cleaning device. Background Technology

[0002] Currently, the diversion channels used in drilling and well workover are prone to sedimentation and accumulation at the bottom of the channel due to friction caused by the heavy oil blocks or other solid particles carried by the fluid flowing in the channel, which can block the channel. Therefore, it is necessary to rely on manual labor to clean the sediment at the bottom of the channel regularly.

[0003] The following problems exist in the conventional manual cleaning of sediment at the bottom of the tank: (1) The cost of manual cleaning is high. Generally, the on-site workers are employed part-time, which increases the labor intensity of the on-site workers and is inefficient. If an emergency occurs and the on-site workers are required to handle it, the cleaning will be delayed or no one will clean it. Excessive sediment at the bottom of the tank will block the channel, and the well fluid will overflow from the tank surface and flow to the ground, causing pollution. (2) Since the diversion channel is an overhead device, manual cleaning is a high-altitude operation, which poses a risk of falling from a height. (3) The fluid entering the well carries out toxic and harmful gases such as hydrogen sulfide from the well, which will cause irreversible damage to the personnel who work in the tank for a long time, and in severe cases, endanger their lives. Utility Model Content

[0004] The problem to be solved by this utility model is at least one of the following: "The cleaning of sediment and blockage in the diversion channel relies on manual labor, which is labor-intensive, slow and inefficient, resulting in slow and inefficient fluid transport; at the same time, there are safety risks and harm to personnel."

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A wellhead guide channel cleaning device includes a scraper, a slider, a slide rail, a power support, a traction steel wire rope and a steel wire rope drum, and a power motor. Slide rails are respectively installed at the top of the channel walls on both sides of the guide channel. A scraper rotation shaft is connected to the top of the scraper. A slider is connected to each end of the scraper rotation shaft. Each slider is slidably connected to the slide rail on one side. The lower end face of the scraper is close to the bottom of the guide channel.

[0007] One end of the scraper rotation shaft is connected to a scraper rocker arm;

[0008] The scraper rotating shaft is provided with a rope hole, one end of the traction wire rope is connected to the rope hole, and the other end is connected to the wire rope drum;

[0009] The lower part of the power support is fixed across the top of the downstream outlet of the guide channel, and the upper part of the power support is fixed side by side with the wire rope drum and the power motor.

[0010] The main shaft of the power motor is synchronously connected to the main shaft of the wire rope drum.

[0011] Furthermore, the lower end face of the scraper is beveled at 45° to be close to the bottom of the guide channel.

[0012] Furthermore, the width of the scraper is smaller than the width of the inner cavity of the guide channel, and a certain gap is left between the scraper and the inner cavity of the guide channel on both sides. The length of the scraper is 1.414 times the height of the guide channel.

[0013] Furthermore, the scraper rotation shaft is connected to the scraper rocker arm with a square head, which is used to rotate 45° to raise or lower the scraper 2.

[0014] Furthermore, the rope hole is an equilateral triangle welded from an iron rod at the center of the scraper's rotating shaft.

[0015] Furthermore, it also includes slide rail clips and brake pins. There are multiple slide rail clips, which are distributed at the upper, middle and lower ends of the slide rail. The brake pins are used to be placed inside the slide rail clips to prevent the slider from sliding down.

[0016] Furthermore, it also includes a protective cover, which is used to cover the wire rope drum and the power motor.

[0017] Furthermore, the length of the traction wire rope is three times the length of the guide trough.

[0018] Furthermore, the main shaft of the power motor is parallel to the main shaft of the wire rope drum, and pulleys are rotatably connected to the same end of the two main shafts, with the two pulleys connected by two V-belts.

[0019] Furthermore, a small support rod is provided on the slider. After the small support rod rotates to be perpendicular to the slider on the horizontal plane, it is used to support the scraper rocker arm. When the small support rod rotates to be parallel to the slider on the horizontal plane, the scraper rocker arm is lowered. Under the action of gravity, the scraper rotates downward by 45° and the edge of the scraper contacts the bottom surface of the guide channel.

[0020] Furthermore, in the standby state of the wellhead guide channel cleaning device: the two sliders and the scraper are located at the top of the upstream of the guide channel, and the scraper and its rotation axis are on the same horizontal plane at the top of the guide channel wall. At this time, the scraper rocker is also on the horizontal plane and is supported by the small support rod set on the slider, which rotates 90° counterclockwise and is perpendicular to the slider.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This utility model designs and manufactures a wellhead guide channel cleaning device, which is attached to the top of the guide channel. A power motor drives a wire rope drum to rotate, which in turn drives a 45° scraper to move downstream in a straight line. This pushes solid deposits or poorly flowing heavy oil, etc., located at the front end of the scraper in the guide channel, to a downstream vibrating screen for sorting and harmless treatment. Construction personnel do not need to go into or to the side of the channel to clean the solid particles deposited inside the channel to the downstream vibrating screen for separation and harmless treatment. This achieves the goal of simple, safe, and efficient cleaning of the guide channel.

[0023] 2. The wellhead guide channel cleaning device of this utility model belongs to the auxiliary equipment of the underground operation technology innovation. Its advantages are: (1) simple structure, reliable strength, strong operability, and good on-site construction effect; (2) This utility model replaces manual heavy physical labor and greatly reduces the intensity of manual labor; (3) This utility model innovatively adopts explosion-proof electrical equipment and adopts three-level power transmission to simplify and automate the work that is difficult to be carried out by manpower, and improve work efficiency; (4) It eliminates the need for manpower to carry out long-term high-altitude construction operations and eliminates the need for manpower to carry out long-term toxic and harmful construction operations; (5) This device can easily avoid environmental pollution accidents caused by the slow processing speed of manpower when the circulation discharge is large and the solid sediment accumulation is serious.

[0024] 3. This utility model is applicable to all downhole workover and drilling operations in oil and gas fields, especially in challenging operations such as sand flushing, cement plug drilling, rapid drilling, heavy oil return to the well, and cleaning debris from the wellbore, easily achieving safe, environmentally friendly, and efficient construction. It can be used in all oilfields both domestically and internationally. The more challenging the drilling and workover operations, the more significant the benefits and cost savings, demonstrating broad prospects for widespread application. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the wellhead guide channel cleaning device of this utility model in use.

[0026] Figure 2 For the present utility model Figure 1 The main view;

[0027] Figure 3 For the present utility model Figure 1 Top view;

[0028] Figure 4 This is a schematic diagram of the wellhead guide channel cleaning device of this utility model in standby mode.

[0029] Reference numerals in the attached drawings: 1—Guide channel, 2—Scraper, 3—Scraper rocker arm, 4—Scraper rotating shaft, 5—Scraper equilateral triangular rod, 6—Slider, 7—Slide rail, 8—Traction wire rope, 9—Wire rope drum, 10—Power motor, 11—V-belt, 12—Power support, 13—Brake pin, 14—Slide rail buckle; 15—Small support rod; 16—Pulley; 17—Square head. Detailed Implementation

[0030] The technical solution of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] It should be noted that the terms "center", "upper", "lower", "horizontal", "left", "right", "front", "back", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Combination Figures 1-3 As shown, this utility model provides a wellhead guide channel cleaning device. The device is attached to the top of the two walls of the guide channel 1. The total length is equal to or slightly less than the length of the guide channel 1, and the total width is slightly greater than the width of the guide channel 1.

[0033] The wellhead guide channel cleaning device includes a scraper 2, a slider 6, a slide rail 7, a power support 12, a traction steel wire rope 8 and a steel wire rope drum 9, and a power motor 10.

[0034] The scraper 2 is made of 5mm thick steel plate, with the lower end face cut at 45° and close to the bottom of the guide channel 1. The width of the scraper 2 is 10mm smaller than the inner width of the guide channel 1, and there is a 5mm gap on each side of the inner cavity of the guide channel 1. The length of the scraper 2 is 1.414 times the height of the guide channel 1.

[0035] A cylindrical crossbar with an outer diameter of φ30mm is welded to the top of the scraper 2. The two ends of the crossbar are inserted into the round holes of the slider 6 to form the scraper rotation shaft 4. The left end of the scraper rotation shaft 4 is connected to a 400mm scraper rocker arm 3 with a square head 17, which is used to rotate 45° to raise or lower the scraper 2.

[0036] An equilateral triangle with a side length of 400mm is welded to the middle of the scraper rotating shaft 4 using an iron rod with a diameter of φ20mm, forming the scraper equilateral triangle rod 5, which serves as a rope hole for connecting the traction wire rope 8 to the wire rope drum 9.

[0037] The slider 6 is made of two 20mm thick iron blocks cut into shape. The lower part of the slider 6 is placed inside the slide rail 7 and fits tightly with the slide rail 7. A φ30mm round hole is drilled at the top for the scraper rotating shaft 4 to pass through. The scraper equilateral triangular rod 5 is pulled by the traction steel wire rope 8, which drives the slider 6. The slider 6 drives the scraper 2 to slide back and forth in the slide rail 7.

[0038] The brake (braking) of slider 6 is cut at the upper, middle and lower ends of slide rail 7 at the downstream end of slider 6. At least two slide rail clips 14 are set on each side, for a total of at least four slide rail clips 14. Braking pins 13 are placed at the slide rail clips 14 to prevent slider 6 from sliding down.

[0039] The slide rail 7 is made of two channel steels with an inner groove width of 20mm. The length of the slide rail 7 is 400mm shorter than the length of the guide channel 1. The upstream end of the slide rail 7 is aligned with the upstream end of the guide channel 1, and the slide rail 7 is fixed to the top of the guide channel 1 wall by welding or bolts. The slide rail 7 is used to hold the slider 6, and the sliding and braking of the slider 6 are controlled as needed.

[0040] The power support 12 is welded from 40mm square steel and is used to fix the wire rope drum 9 and the power motor 10 side by side on its upper part. The lower part of the power support 12 is fixed across the top of the downstream outlet of the guide channel 1. The power support 12 is fixed to the top of the outlet of the guide channel 1 with screw bolts.

[0041] The upper part of the power support 12 is covered by a uniform protective cover to cover the wire rope drum 9 and the power motor 10.

[0042] The traction wire rope 8 is a φ10mm outer diameter wire rope with a length three times that of the guide trough 1. One end is wound around the wire rope drum 9, and the other end is connected to the front corner of the scraper equilateral triangle rod 5. It is used to transmit downstream power to the scraper 2, so that the scraper 2 scrapes the sediment at the bottom of the trough obliquely upward and downward.

[0043] The two ends of the main shaft of the wire rope drum 9 are fixed to the downstream power support 12 by bearings.

[0044] The power motor 10 uses the well site safety voltage as its power source and requires the entire circuit to be explosion-proof. The power output power of the power motor 10 is 2000W-5000W. The bottom of the power motor 10 is fixed to the power bracket 12 with anchor bolts.

[0045] The main shaft of the power motor 10 is parallel to the main shaft of the wire rope drum 9. The left ends of the two main shafts are respectively connected to pulleys 16, and the two pulleys 16 are connected by two V-belts 11 to transmit power.

[0046] The power switch for the drive motor 10 is mounted on the circulation tank, 3m-5m away from the drive motor 10. A large amount of drilling fluid is generated during the drilling process, and the circulation tank is used to store this drilling fluid.

[0047] Installation steps of the wellhead guide channel cleaning device:

[0048] First, align and fix the two slide rails 7 upstream to the top of the left and right channels of the guide channel 1. The fixing method can be welding or bolting, depending on the actual situation.

[0049] Then, the slider 6, which is inserted through the scraper rotating shaft 4, is placed in and blocked on the upstream slide rail buckle 14 by the brake pin 13;

[0050] Next, the power bracket 12 is fixed across the opening of the channel on the upper part of the downstream channel wall of the guide channel 1 using screw bolts;

[0051] Next, install the wire rope drum 9 and the power motor 10 on the upper part of the power support 12, adjust the position of the anchor bolts of the power motor 10, connect the two V-belts 11, then tighten the anchor bolts, fasten the protective cover and fix the protective cover.

[0052] Finally, connect one end of the traction wire rope 8 to the equilateral triangular rod 5 of the scraper, and the other end to the wire rope drum 9. Arrange the excess part neatly and tightly wind it around the wire rope drum 9, keeping the traction wire rope 8 in a straight state and preventing it from drooping excessively.

[0053] How to use the wellhead guide channel cleaning device:

[0054] ① After the wellhead guide channel cleaning device is installed, during well workover and fluid circulation, in the standby state of the wellhead guide channel cleaning device, the two sliders 6 and the scraper 2 are located at the upstream top of the guide channel 1. The scraper 2 and its scraper rotation axis 4 are on the same upper plane at the top of the guide channel 1 wall. At this time, the scraper rocker arm 3 is also on the horizontal plane and is supported by the small support rod 15 on the slider 6, which rotates 90° counterclockwise and is perpendicular to the slider 6. Figure 4 As shown, this is equivalent to forming the third fulcrum where the scraper 2 is suspended, and the scraper 2 can slide back and forth on the slide rail 7 together with the slider 6 in a horizontal state;

[0055] ② When obvious sediment accumulation is found in the guide channel 1, lift the scraper rocker 3, rotate the small support rod 15 clockwise 90° on the horizontal plane until it is parallel to the slider 6, put down the scraper rocker 3, so that the scraper 2 rotates downward 45° under the action of gravity, and the edge contacts the bottom surface of the guide channel 1.

[0056] ③ Pull out the brake pin 13 from the slide rail buckle 14;

[0057] ④ Turn on the power motor 10 switch. The power motor 10 drives the wire rope drum 9 to rotate, and then drives the scraper 2 to slide downstream, which can push the sediment to the downstream outlet and enter the vibrating screen position. Immediately turn off the power motor 10.

[0058] ⑤ Flip the scraper 2 upwards by 45° so that its surface is on the horizontal plane, turn out the small support rod 15 to support the scraper rocker 3, push the slider 6 and scraper 2 to the upstream end, insert the brake pin 13 into the upstream slide rail buckle 14 of the slide rail 7, and enter the standby state again.

[0059] ⑥ Once sediment is found to accumulate in the flow channel 1 again, repeat the operation.

[0060] The above technical features constitute the preferred embodiment of this utility model, which has strong adaptability and optimal implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the needs of different situations.

[0061] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A wellhead guide channel cleaning device, characterized in that, Includes a scraper (2), a slider (6), a slide rail (7), a power support (12), a traction wire rope (8) and a wire rope drum (9), and a power motor (10). The top of the walls on both sides of the guide channel (1) are respectively provided with slide rails (7). The top of the scraper (2) is connected to a scraper rotating shaft (4). Each end of the scraper rotating shaft (4) is connected to a slider (6). Each slider (6) is slidably connected to the slide rail (7) on one side. The lower end face of the scraper (2) is close to the bottom of the guide channel (1). One end of the scraper rotating shaft (4) is connected to a scraper rocker arm (3). A rope hole is provided on the scraper rotating shaft (4). One end of the traction wire rope (8) is connected to the rope hole, and the other end is connected to the wire rope drum (9). The lower part of the power bracket (12) is fixed across the top of the downstream outlet of the guide channel (1). The upper part of the power bracket (12) is fixed side by side with the wire rope drum (9) and the power motor (10). The main shaft of the power motor (10) is connected to the main shaft of the wire rope drum (9) for transmission.

2. The wellhead guide channel cleaning device according to claim 1, characterized in that, The lower end face of the scraper (2) is cut at 45° and is close to the bottom of the guide groove (1).

3. The wellhead guide channel cleaning device according to claim 2, characterized in that, The width of the scraper (2) is less than the width of the inner cavity of the guide channel (1). A certain gap is left between the scraper (2) and the inner cavity of the guide channel (1) on the left and right. The length of the scraper (2) is 1.414 times the height of the guide channel (1).

4. The wellhead guide channel cleaning device according to claim 2, characterized in that, The scraper rotating shaft (4) is connected to the scraper rocker arm (3) with a square head, which is used to rotate 45° to raise or lower the scraper (2).

5. The wellhead guide channel cleaning device according to claim 1, characterized in that, The rope hole is an equilateral triangle welded from an iron rod in the middle of the scraper rotation shaft (4).

6. The wellhead guide channel cleaning device according to any one of claims 1-5, characterized in that, It also includes slide rail buckles (14) and brake pins (13). There are multiple slide rail buckles (14), which are distributed at the upper, middle and lower ends of the slide rail (7). The brake pins (13) are used to place inside the slide rail buckles (14) to prevent the slider (6) from sliding down.

7. The wellhead guide channel cleaning device according to claim 1, characterized in that, It also includes a protective cover, which is used to cover the wire rope drum (9) and the power motor (10).

8. The wellhead guide channel cleaning device according to claim 1, characterized in that, The length of the traction wire rope (8) is 3 times the length of the guide groove (1).

9. The wellhead guide channel cleaning device according to any one of claims 1-5, characterized in that, The main shaft of the power motor (10) is parallel to the main shaft of the wire rope drum (9). The same end of the two main shafts is connected to pulleys, and the two pulleys are connected by two triangular belts (11).

10. The wellhead guide channel cleaning device according to any one of claims 1-5, characterized in that, A small support rod (15) is provided on the slider (6). After the small support rod (15) rotates to be perpendicular to the slider (6) on the horizontal plane, it is used to support the scraper rocker (3). When the small support rod (15) rotates to be parallel to the slider (6) on the horizontal plane, the scraper rocker (3) is lowered. The scraper (2) rotates downward by 45° under the action of gravity, and the edge of the scraper (2) contacts the bottom surface of the guide groove (1).

Images