Oil-containing drill cuttings extraction kettle barrel cleaning tool and use method

Abstract

The present invention provides a tool for cleaning a barrel of an oil-containing drill cuttings extraction kettle and a method for using the tool, comprising a drill rod, a dust cover and a drill bit, wherein a through hole is provided at the center of the dust cover, a rolling bearing is provided in the through hole, a linear bearing is provided inside the rolling bearing, the drill bit is connected to the lower end of the drill rod, a scraper is connected to the lower part of the drill bit, the drill rod and the drill bit pass through the interior of the linear bearing, and the drill rod and the drill bit can move up and down and rotate. The invention has a simple structure and reliable performance, and can complete the cleaning of the barrel through simple lifting and rotating operations, which is convenient for automated control, and solves the problem of manual cleaning, which is time-consuming and labor-intensive, and is not conducive to large-scale and rapid operations. The method for using the tool is simple to operate, the cleaning is thorough, the degree of automation is high, and manpower is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum equipment, and in particular to a cleaning tool for a barrel of an oil-containing drill cuttings extraction kettle and a use method thereof. Background Art

[0002] In the process of oil exploration and development, a large amount of oil-containing drill cuttings that pollute the environment will be generated, and the oil-containing drill cuttings need to be harmlessly treated. In the existing technology, the supercritical CO2 extraction method for treating oil-containing drill cuttings has the advantages of low temperature, low energy consumption, no fission of base oil, and direct secondary slurry preparation. Among them, more than 99% of the oil and water in the oil-containing drill cuttings will be extracted, leaving dry drill cuttings blocks with low hardness and relatively loose. After the barrel containing the oil-containing drill cuttings is extracted by the extraction kettle, the dry drill cuttings need to be cleaned. In the past, it was manually cleaned, which was time-consuming and labor-intensive, and was not conducive to large-scale and rapid operations. Summary of the invention

[0003] The purpose of the present invention is to overcome the problem that the existing oil-containing drill cuttings cleaning tools rely on manual cleaning, which is time-consuming and labor-intensive and is not conducive to large-scale and rapid operations, and to provide an oil-containing drill cuttings extraction kettle barrel cleaning tool and a use method.

[0004] The technical solution of the present invention is: a tool for cleaning the barrel of an oil-containing drill cuttings extraction kettle, comprising a drill rod, a dust cover and a drill bit, a through hole is provided in the center of the dust cover, a rolling bearing is provided in the through hole, a linear bearing is provided inside the rolling bearing, the drill bit is connected to the lower end of the drill rod, a scraper is connected to the lower part of the drill bit, the drill rod and the drill bit pass through the inside of the linear bearing, and the drill rod and the drill bit can move up and down and rotate.

[0005] There are two scrapers, which are respectively located on both sides of the drill bit.

[0006] The drill bit is provided with a groove for placing a scraper, one end of the scraper is connected to the groove of the drill bit through a rotating shaft, the scraper can rotate up and down around the rotating shaft, and the angle between the scraper and the drill bit is 0 to 90 degrees.

[0007] The free end of the scraper is connected with a brush.

[0008] A plurality of protrusions are arranged on one side above the scraper.

[0009] The end surface of one end of the scraper connected to the drill bit is an arc surface.

[0010] The present invention also provides a method for using a tool for cleaning a barrel of an oil-containing drill cuttings extraction kettle, comprising the following steps:

[0011] Step 1) Connect the upper end of the drill rod of the cleaning tool to the liftable top drive, raise the liftable top drive to the highest point, remove the upper cover and the lower cover of the barrel containing dry drill cuttings, and place the barrel directly below the cleaning tool and directly above the drill cuttings recovery box;

[0012] Step 2) Connect the dust cover to the upper end of the barrel, the bottom end of the drill bit is located in the linear bearing, and the liftable top drive is turned on. The liftable top drive drives the drill rod and the drill bit to rotate and move downward at the same time, and the drill bit drills a channel in the barrel;

[0013] Step 3) When the drill bit is completely exposed under the barrel, increase the speed of the liftable top drive, increase the drill bit speed, and make the angles between the two scrapers and the drill bit 10 degrees through centrifugal force. Then lift the drill bit, the scrapers will clean the dry drill cuttings in the barrel layer by layer, and the brush will clean the inner wall of the barrel and make it fall into the drill cuttings recovery box;

[0014] Step 4) When the drill bit reaches the top of the barrel, rotate it down and then rotate it up to the top of the barrel until the inside of the barrel is cleaned. Finally, remove the dust cover, extract the drill rod and drill bit, and clean the cleaning tool.

[0015] When the included angles between the two scrapers and the drill bit are both 90 degrees, the brush is in contact with the inner wall of the barrel.

[0016] Beneficial effects of the present invention:

[0017] The oil-containing drill cuttings extraction kettle barrel cleaning tool of the present invention has a simple structure and reliable performance. The barrel cleaning work can be completed through simple lifting and rotating operations, which is convenient for automatic control and solves the problem of manual cleaning, which is time-consuming and labor-intensive and not conducive to large-scale and rapid operations. At the same time, a dust cover is provided to prevent dust, and rolling bearings and linear bearings are provided on the dust cover to reduce damage and extend the service life of the tool. The use method of the oil-containing drill cuttings extraction kettle barrel cleaning tool is simple to operate, the cleaning is thorough, the degree of automation is high, and manpower is greatly reduced.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the oil-containing drill cuttings extraction kettle barrel cleaning tool of the present invention;

[0020] Figure 2 It is a schematic diagram of the scraper in the retracted state of the present invention.

[0021] Explanation of the reference numerals: 1. drill rod; 2. linear bearing; 3. rolling bearing; 4. dust cover; 5. drill bit; 6. rotating shaft; 7. scraper; 8. brush; 9. protrusion; 10. barrel. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] Embodiment 1:

[0024] In order to overcome the problem that the existing oil-containing drill cuttings cleaning tools rely on manual cleaning, which is time-consuming and labor-intensive, and is not conducive to large-scale and rapid operations, this embodiment provides a Figure 1 and Figure 2 The oil-containing drill cuttings extraction kettle barrel cleaning tool shown is a tool for cleaning the oil-containing drill cuttings extraction kettle barrel, comprising a drill rod 1, a dust cover 4 and a drill bit 5, wherein the dust cover 4 is provided with a through hole in the center, a rolling bearing 3 is provided in the through hole, a linear bearing 2 is provided inside the rolling bearing 3, the drill bit 5 is connected to the lower end of the drill rod 1, a scraper 7 is connected to the lower part of the drill bit 5, the drill rod 1 and the drill bit 5 pass through the linear bearing 2, and the drill rod 1 and the drill bit 5 can move up and down and rotate.

[0025] The working principle of the oil-containing drill cuttings extraction kettle barrel cleaning tool provided by the present invention is as follows:

[0026] The upper cover and the lower cover of the barrel 10 that needs to be cleaned are removed, and the cleaning tool is placed directly above the barrel 10. The drill rod 1 is driven to move up and down and rotate by the liftable top drive, thereby driving the drill bit 5 to move up and down and rotate in the barrel 10. The dry drill cuttings in the barrel 10 are cleaned out under the action of the drill bit 5 and the scraper 7. When the drill rod 1 and the drill bit 5 move up and down and rotate, the dry drill cuttings in the barrel 10 will splash out from the upper end of the barrel 10. Therefore, a dust cover 4 is provided. A through hole is provided in the center of the dust cover 4. When the drill rod 1 and the drill bit 5 move up and down and rotate in the through hole, the drill rod 1 and the drill bit 5 will generate friction with the center of the dust cover 4, which can easily damage the equipment. Therefore, a rolling bearing 3 is provided in the through hole in the center of the dust cover 4, and a linear bearing 2 is provided inside the rolling bearing 3 to reduce damage and extend the service life of the tool.

[0027] The oil-containing drill cuttings extraction kettle barrel cleaning tool of the present invention has a simple structure and reliable performance. The barrel cleaning work can be completed through simple lifting and rotating operations, which is convenient for automatic control and solves the problem of manual cleaning, which is time-consuming and labor-intensive and not conducive to large-scale and rapid operations. At the same time, a dust cover is provided to prevent dust, and rolling bearings and linear bearings are provided on the dust cover to reduce damage and extend the service life of the tool.

[0028] Embodiment 2:

[0029] Based on Example 1, this example provides a tool for cleaning the barrel of an oil-containing drill cuttings extraction kettle. In order to clean the dry drill cuttings in the barrel more thoroughly and to ensure that the drill bit 5 is subjected to uniform force when rotating, there are two scrapers 7, which are respectively located on both sides of the drill bit 5.

[0030] Embodiment 3:

[0031] Based on Example 1 or Example 2, this embodiment provides an oil-containing drill cuttings extraction kettle barrel cleaning tool, wherein the drill bit 5 is provided with a groove for placing a scraper, and one end of the scraper 7 is connected to the groove of the drill bit 5 through a rotating shaft 6. The scraper 7 can rotate up and down around the rotating shaft 6, and the angle between the scraper 7 and the drill bit 5 is 0 to 90 degrees.

[0032] The upper part of the drill bit 5 is a threaded male buckle, which is convenient for installing drill rods of different lengths. The lower part of the drill bit 5 is a twist drill bit with a diameter larger than other parts, which is convenient for rotary drilling. The groove of the drill bit 5 can completely accommodate the scraper 7, which is helpful for establishing a drilling path. The scraper 7 is first in a retracted state, and the drill bit 5 drills a path from top to bottom in the barrel 10, so that the drill bit 5 drills out of the bottom of the barrel 10, and then the scraper 7 is unfolded by the centrifugal force of high-speed rotation, and then rotated at medium speed and slowly lifted up to clean the drill cuttings in the barrel 10, so that the dry drill cuttings are easy to fall, and the centrifugal force can be used to clean the drill cuttings that fall on the drill bit 5 to prevent the scraper 7 from being stuck.

[0033] Embodiment 4:

[0034] On the basis of Example 1 or Example 2, this embodiment provides a cleaning tool for the barrel of an oil-containing drill cuttings extraction kettle, and further, the free end of the scraper 7 is connected with a brush 8. One end of the brush 8 has dense and thin wear-resistant fibers with a certain hardness, which is conducive to cleaning the drill cuttings on the inner wall of the barrel 10, and the brush 8 is connected to the scraper 7 by a thread, which is convenient for disassembly and assembly.

[0035] Embodiment 5:

[0036] On the basis of Example 1 or Example 2, this embodiment provides an oil-containing drill cuttings extraction kettle barrel cleaning tool. Furthermore, a plurality of protrusions 9 are provided on one side above the scraper 7, which facilitates point-to-surface cutting of dry drill cuttings blocks, and facilitates cleaning of dry drill cuttings when the drill bit 5 moves up and down and rotates, while avoiding the difficulty of cleaning dry drill cuttings agglomerates and damage caused by excessive rotation speed of the drill bit 5.

[0037] Embodiment 6:

[0038] Based on Example 1 or Example 2, this embodiment provides an oil-containing drill cuttings extraction kettle barrel cleaning tool. Furthermore, the end face of the scraper 7 connected to the drill bit 5 is an arc surface, which is convenient for preventing the scraper 7 from being stuck when the scraper 7 rotates up and down around the rotating shaft 6.

[0039] Embodiment 7:

[0040] This embodiment also provides a method for using a tool for cleaning a barrel of an oil-containing drill cuttings extraction kettle, comprising the following steps:

[0041] Step 1) Connect the upper end of the drill rod 1 of the cleaning tool to the liftable top drive, raise the liftable top drive to the highest point, remove the upper cover and the lower cover of the barrel 10 containing dry drill cuttings, and place the barrel 10 directly below the cleaning tool and directly above the drill cuttings recovery box;

[0042] Step 2) Connect the dust cover 4 to the upper end of the barrel 10, the bottom end of the drill bit 5 is located in the linear bearing 2, and the liftable top drive is turned on. The liftable top drive drives the drill rod 1 and the drill bit 5 to rotate and move downward at the same time, and the drill bit 5 drills a channel in the barrel 10;

[0043] Step 3) When the drill bit 5 is completely exposed below the barrel 10, the rotation speed of the liftable top drive is increased, the rotation speed of the drill bit 5 is increased, and the angles between the two scrapers 7 and the drill bit 5 are both 90 degrees through centrifugal force, and then the drill bit 5 is lifted up, and the scrapers 7 will clean the dry drill cuttings in the barrel 10 layer by layer, and the brush 8 will clean the inner wall of the barrel 10, causing it to fall into the drill cuttings recovery box;

[0044] Step 4) When the drill bit 5 reaches the top of the barrel 10, rotate and lower the drill bit 5, and then rotate and lift the drill bit 5 to the top of the barrel 10 until the inside of the barrel 10 is cleaned. Finally, remove the dust cover 4, extract the drill rod 1 and the drill bit 5, and clean the cleaning tool.

[0045] Furthermore, when the angles between the two scrapers 7 and the drill bit 5 are both 90 degrees, the brush 8 and the inner wall of the barrel 10 are in contact with each other.

[0046] The use method of the oil-containing drill cuttings extraction kettle barrel cleaning tool of the present invention is simple to operate, has thorough cleaning, has a high degree of automation, and greatly reduces manpower.

[0047] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A cleaning tool for oil-containing drill cuttings extraction kettle barrel, characterized in that: The invention comprises a drill rod (1), a dust cover (4) and a drill bit (5); a through hole is provided at the center of the dust cover (4); a rolling bearing (3) is provided in the through hole; a linear bearing (2) is provided inside the rolling bearing (3); the drill bit (5) is connected to the lower end of the drill rod (1); a scraper (7) is connected to the lower part of the drill bit (5); the drill rod (1) and the drill bit (5) pass through the inside of the linear bearing (2); the drill rod (1) and the drill bit (5) can move up and down and rotate; the drill bit (5) drills a passage from top to bottom in the barrel (10); There are two scrapers (7), which are respectively located on both sides of the drill bit (5). The scrapers (7) can rotate up and down around the rotating shaft (6), and the angle between the scrapers (7) and the part of the drill bit (5) above the rotating shaft (6) is 0 to 90 degrees.

2. The oil-containing drill cuttings extraction kettle barrel cleaning tool according to claim 1, characterized in that: The drill bit (5) is provided with a groove for accommodating a scraper, and one end of the scraper (7) is connected to the groove of the drill bit (5) via a rotating shaft (6), and the groove of the drill bit (5) can completely accommodate the scraper (7).

3. The oil-containing drill cuttings extraction kettle barrel cleaning tool according to claim 1, characterized in that: The free end of the scraper (7) is connected to a brush (8).

4. The oil-containing drill cuttings extraction kettle barrel cleaning tool according to claim 1, characterized in that: A plurality of protrusions (9) are provided on one side above the scraper (7).

5. The oil-containing drill cuttings extraction kettle barrel cleaning tool according to claim 1, characterized in that: The end surface of one end of the scraper (7) connected to the drill bit (5) is an arc surface.

6. The oil-containing drill cuttings extraction kettle barrel cleaning tool as claimed in claim 2, characterized in that: One end of the brush (8) has dense and thin strips of wear-resistant fibers, which is conducive to cleaning the drill cuttings on the inner wall of the barrel (10).

7. The oil-containing drill cuttings extraction kettle barrel cleaning tool according to claim 2 or 6, characterized in that: The brush (8) is connected to the scraper (7) by means of threads.

8. A method for using a tool for cleaning a barrel of an oil-containing drill cuttings extraction kettle, characterized in that: The steps include: Step 1) connecting the upper end of the drill rod (1) of the cleaning tool to a liftable top drive, raising the liftable top drive to the highest point, removing the upper cover and the lower cover of the barrel (10) containing dry drill cuttings, and placing the barrel (10) directly below the cleaning tool and directly above the drill cuttings recovery box; Step 2) Connect the dust cover (4) to the upper end of the barrel (10), the bottom end of the drill bit (5) is located in the linear bearing (2), and the liftable top drive is turned on. The liftable top drive drives the drill rod (1) and the drill bit (5) to rotate and move downward at the same time, and the drill bit (5) drills a passage in the barrel (10); Step 3) When the drill bit (5) is completely exposed below the barrel (10), the rotation speed of the liftable top drive is increased, the rotation speed of the drill bit (5) is increased, and the angles between the two scrapers (7) and the drill bit (5) are both 90 degrees through centrifugal force. The drill bit (5) is then lifted up, and the scrapers (7) will clean the dry drill cuttings in the barrel (10) layer by layer, and the brush (8) will clean the inner wall of the barrel (10) so that the dry cuttings fall into the drill cuttings recovery box; Step 4) When the drill bit (5) reaches the top of the barrel (10), the drill bit (5) is rotated down and then rotated up to the top of the barrel (10) until the inside of the barrel (10) is cleaned. Finally, the dust cover (4) is removed, the drill rod (1) and the drill bit (5) are taken out, and the cleaning tool is cleaned.

9. The method for using the oil-containing drill cuttings extraction kettle barrel cleaning tool as claimed in claim 8, characterized in that: When the included angles between the two scrapers (7) and the drill bit (5) are both 90 degrees, the brush (8) and the inner wall of the barrel (10) are in contact with each other.

10. The method for using the oil-containing drill cuttings extraction kettle barrel cleaning tool according to claim 8, characterized in that: The scraper (7) is first in a retracted state, and the drill bit (5) drills a passage from top to bottom in the barrel (10), so that the drill bit (5) drills out of the bottom of the barrel (10), and then the scraper (7) is unfolded by the centrifugal force of high-speed rotation, and then rotated at a medium speed and slowly lifted up to clean the drill cuttings in the barrel (10), so that the dry drill cuttings can fall easily, and the centrifugal force can be used to clean the drill cuttings that fall on the drill bit (5), thereby preventing the scraper (7) from being stuck.

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