A method for lubricating pipe string cleaning buckles during drilling and workover operations

Abstract

The present invention relates to a method for cleaning and oiling a pipe column during a drilling and repairing operation, comprising the following operating steps: S1, after a drilling platform manipulator takes the pipe from a root box, it first transports the drill pipe to the top of a cleaning and oiling device; S2, after the drilling platform manipulator reaches a predetermined position, the drill pipe is placed vertically and remains stationary; S3, the cleaning and oiling device is controlled to rise by a control box of the oiling device, at which time the drill pipe enters the cleaning and oiling device to perform cleaning and oiling operations; S4, when the cleaning and oiling process is completed, the cleaning and oiling device is controlled to descend by a control box of the oiling device, and the drilling platform manipulator transports the drill pipe to the wellhead. The operation mode proposed by the present invention is more flexible, and the thread cleaning and oiling device is a quick-detachable and lightweight design, which can be installed at any position on the drilling platform.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum drilling, in particular to a method for oiling a pipe cleaning button during drilling and repairing operations. Background Art

[0002] During the drilling and well repair process, the cleaning and oiling of the pipe thread is a very frequent operation in the drilling and well repair operation. At present, the thread oil application needs to be done manually, and the workers have high labor intensity and high risk. At present, there is a general problem of difficulty in hiring workers in oil fields. The realization of unmanned and automated wellhead is an urgent problem to be solved and realized. At present, there are also solutions for automatic thread oil application on the market. The equipment is arranged at the wellhead, and the cleaning of the thread and the application of thread oil are completed in the wellhead area. However, the size is relatively bulky and can only be fixed in a fixed position on the drilling platform, occupying the limited space resources within the wellhead range, which is very inconvenient during the operation. During the operation, the driller needs to spend too much energy on this step in the process, which reduces the efficiency of the drilling and well repair process, slows down the progress, and increases costs.

[0003] The current methods of cleaning and oiling threads have the following problems:

[0004] 1. The current method of cleaning threads is to fix the equipment in the wellhead area of ​​the drilling platform, clean the threads and apply thread oil in the wellhead area of ​​the drilling platform, occupying the precious limited space resources in the drilling platform area.

[0005] 2. The current method of thread cleaning and oiling is to clean and oil the threads at the wellhead, which affects other actions at the wellhead and affects the operation efficiency.

[0006] 3. The current methods for cleaning threads are too complicated. Cleaning and oiling are two sets of processes, and the operation process involves the conversion process of the process, which has low operation efficiency.

[0007] In view of the above problems, it is necessary to improve the existing drilling and workover operation process. Summary of the invention

[0008] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a method for oiling the pipe string during drilling and workover operations.

[0009] In order to solve the above technical problems, the present invention provides a technical solution: a system for cleaning and oiling a pipe string during drilling and workover operations, comprising:

[0010] A drilling platform, wherein a wellhead is arranged on the drilling platform, and a stand box for storing drill pipes is arranged in front of the wellhead;

[0011] A derrick, wherein the derrick is arranged above the wellhead, and a driller's room is arranged on one side of the derrick;

[0012] A drilling floor manipulator, the drilling floor manipulator is arranged at a passage position between the stand box and the wellhead;

[0013] A clean button oiling device is arranged on one side of the drilling platform manipulator and close to the front leg of the derrick. A control box for the clean button oiling device for controlling the clean button oiling device is arranged on one side of the driller's room.

[0014] Furthermore, the bottom of the cleaning button oiling device and the control box of the cleaning button oiling device are both fixed by pin installation.

[0015] A method for lubricating a pipe string during drilling and workover operations comprises the following steps:

[0016] S1. After the drilling platform manipulator takes the pipe from the stand box, it first transports the drill pipe to the top of the cleaning buckle oiling device;

[0017] S2. After the drilling platform manipulator reaches the predetermined position, it places the drill rod vertically and keeps it still;

[0018] S3, the cleaning and oiling device is raised by controlling the oiling device control box, and the drill pipe enters the cleaning and oiling device to perform the cleaning and oiling operations;

[0019] S4. When the cleaning button oiling process is completed, the cleaning button oiling device is controlled to descend through the oiling device control box, and the drilling platform manipulator transports the drill pipe to the wellhead.

[0020] Furthermore, the driller's room is arranged close to the button cleaning oiling device to observe the working status.

[0021] Furthermore, the oiling device control box is connected to the driller's room and the cleaning button oiling device through pipelines, respectively, to realize two working modes: local operation and driller operation.

[0022] The present invention has the following advantages:

[0023] 1. The operation method proposed by the present invention is more flexible. The thread cleaning and oiling device is of quick-detachable and portable design and can be installed at any position on the drilling table.

[0024] 2. The operation method proposed by the method of the present invention is to arrange the thread cleaning and oiling device at the channel position of the drilling table manipulator to deliver the pipe, which can greatly reduce the movement frequency of the drilling table manipulator.

[0025] 3. In the operation mode proposed by the method of the present invention, the thread cleaning and oiling device has a lifting function. During the operation, there is no need to move the traveling block and the hook, which greatly simplifies the operation process.

[0026] 4. In the operation mode proposed by the method of the present invention, the thread cleaning mechanism of the thread cleaning and oiling device is a floating structure, which can adapt to the floating of the drill rod during the operation to make the action more stable.

[0027] 5. In the operation mode proposed by the method of the present invention, the thread cleaning and oiling device has a brushing function, which can reduce the replacement frequency of the thread cleaning brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a schematic diagram of the button cleaning oiling device of the present invention when it descends.

[0030] Figure 3 It is a schematic diagram of the bottom installation of the cleaning button oiling device / the cleaning button oiling device control box in the present invention.

[0031] Figure 4 It is a structural schematic diagram of the present invention.

[0032] Figure 5 It is a structural schematic diagram of the control box of the present invention.

[0033] Figure 6 It is a schematic diagram of the assembly structure of the button cleaning oiling device of the present invention.

[0034] Figure 7 It is a schematic diagram of the assembly structure of the core part of the button cleaning and oiling device of the present invention.

[0035] Figure 8 It is a schematic diagram of the lifting mechanism of the present invention.

[0036] Fig. 9 It is a schematic diagram of the brush of the present invention in a descending state.

[0037] As shown in the figure: 1-1, drilling platform, 1-2, derrick, 1-3, drilling platform manipulator, 1-4, clean buckle oiling device, 1-5, wellhead, 1-6, root box, 1-7, drill pipe, 1-8, driller's room, 1-9, clean buckle oiling device control box. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the embodiments.

[0039] The present invention is specifically implemented by a typical well drilling and repairing arrangement site, including a drilling platform 1-1, a driller's room 1-8, a derrick 1-2, a stand box 1-6, a wellhead 1-5, a drilling platform manipulator 1-3, a clean buckle oiling device 1-4, a clean buckle oiling device control box 1-9, and a drill pipe 1-7. Figure 1 shown.

[0040] The drilling platform, driller's room, derrick, Reagan box, wellhead, etc. constitute the classic rig table layout; the placement of the drilling platform manipulator is also a relatively classic placement, that is, it is placed in the passage between the drill pipe box and the wellhead. The Jiekou oiling device is placed at the front leg of the derrick as shown in the figure, and the Jiekou oiling device control box is placed next to the driller's room.

[0041] like Figure 3 As shown, the Jiekou oiling device and the Jiekou oiling device control box are quickly installed and connected on the drilling table using a pin-type shaft.

[0042] The button cleaning oiling device has two working positions, one of which is in the raised state. Figure 2 , a working position is in the descending state such as Figure 1 shown.

[0043] The following is a typical working example to describe the process of cleaning button oiling:

[0044] When the drill pipe is lowered into the well, it is necessary to clean the threads and apply oil to it. The cleaning and oiling device is arranged on the channel where the drilling platform manipulator transports the pipe to the wellhead. After the manipulator takes the pipe from the root box, it first transports the pipe string to the top of the cleaning and oiling device and stops, and then the cleaning and oiling device rises. At this time, the drill pipe enters the cleaning and oiling device for cleaning and oiling. Furthermore, since the cleaning and oiling device has its own lifting function, it only needs the drilling platform manipulator to grab the drill pipe and stop at the predetermined position, and the remaining work is completed by the cleaning and oiling device, which saves the driller from the trouble of frequently operating the floating hook and the drilling platform manipulator. In addition, the entrance of the drill pipe of the cleaning and oiling device can have a certain degree of adaptability, which also reduces the operating requirements of the drilling platform manipulator.

[0045] When the cleaning button oiling process is completed, the cleaning button oiling device descends and the drilling platform manipulator transports the drill pipe to the wellhead.

[0046] A thread cleaning oiling system comprises a control box 1, wherein the control box 1 (i.e., a thread cleaning oiling device control box 1-9) is provided with a thread cleaning oil pump 2, an electric control box 3 is provided on one side of the thread cleaning oil pump 2, the electric control box 3 is installed in the control box 1, an operation panel 4 is provided on the top of the electric control box 3, a dust cover 5 of the operation panel is hinged on the top of the control box 1, the control box 1 is connected to a thread cleaning oiling device assembly 6 (i.e., a thread cleaning oiling device 1-4) through a pipeline, the control box 1 and the thread cleaning oiling device assembly 6 are connected to the drilling platform through a quick connection seat, so that the position of the equipment on the drilling platform can be moved at will. An upper cover 7 is provided on the top of the cleaning button oiling device assembly 6, and the upper cover 7 is fixed on the accordion protective cover 8. The bottom of the accordion protective cover 8 is connected to a lifting mechanism 9. A plurality of evenly distributed sliders 26 are provided on both sides of the lifting mechanism 9. The sliders 26 are slidably connected to corresponding nylon guide rails 11, and the nylon guide rails 11 are fixed in the outer shell 27 of the cleaning button oiling device, so that the lifting mechanism 9 can be lifted and lowered in the outer shell 27 of the cleaning button oiling device. The lifting mechanism 9 is provided with telescopic cylinders 10 on both sides, the pistons on the top of the telescopic cylinders 10 are fixed on both sides of the lifting mechanism 9, the bottom of the telescopic cylinders 10 is fixed in the outer shell 27 of the cleaning button oiling device, and nylon guide rails 11 are provided on both sides of the telescopic cylinders 10. The cleaning button oiling core part assembly 12 is provided below the accordion protective cover 8. The cleaning button oiling core part assembly 12 includes a bracket 14, a three-axis cylinder 15, a composite nozzle 16, a rotating part bracket 17, an air motor 18, a small gear 19, a large gear 20, a brush seat 21, a brush 22, a cleaning brush cylinder 23, a nylon cone head 24, and a central shaft 25, which can automatically clean and oil the thread. The cleaning button oiling core part assembly 12 is fixed in the lifting mechanism 9, and a residue collection tray 13 is provided below the cleaning button oiling core part assembly 12. The clean button oiling core part assembly 12 is connected to the pipe column 28, and the pipe column 28 enters the device through the circular opening of the upper cover 7. The pipe column 28 is guided into the device through the nylon cone head 24 on the clean button oiling core part assembly 12, so that the thread is in the cleaning area of ​​the brush 22, and the positioning is more accurate. The clean button oiling core part assembly 12 is connected to the lifting mechanism 9 by means of wire rope suspension, and the length of each wire rope can be adjusted individually. In this way, the clean button oiling core part assembly 12 can adjust the inclination arbitrarily within a certain angle range, and the connection is a flexible connection. The clean button oiling core part assembly 12 can adapt to the position error of the drill pipe within a certain range. The control box 1 and the clean button oiling device body are connected together through a pipeline, and the control box 1 controls the clean button oiling device and provides it with high-pressure thread oil.

[0047] Working principle: the nylon guide rail 11 is installed on the base structure, the cylinder body end is connected to the base structure, the cylinder rod end is connected to the lifting structure, and there is a slider 26 on the lifting structure, which can slide on the nylon guide rail 11 installed on the base structure. When the cylinder is extended, the lifting structure extends upward, and vice versa, when the cylinder is shortened, the lifting structure retracts downward. The upper cover 7 is installed on the lifting structure to prevent external pollutants from entering the box body. One end of the accordion protective cover 8 is installed on the upper cover 7 and the other end is installed on the base structure. In the process of the telescopic structure rising or falling, the protective cover always forms a relatively sealed environment between the telescopic structure and the base structure to prevent external pollutants from entering. The bracket 14 is the mounting carrier of the oil-coated core part assembly 12 of the Jiekou, wherein the cylinder body of the three-axis cylinder 15 is fixedly installed on the bracket 14, with one three-axis cylinder 15 on the left and right, and the lever end of the three-axis cylinder 15 is fixedly installed with the rotating part bracket, so that the entire rotating part bracket can move up and down with the cylinder rod of the three-axis cylinder 15. The brush holder 21 is fixedly connected to the large gear 20, and the large gear 20 is connected to the central axis 25 through a bearing, so that the brush holder 21 can rotate around the central axis 25 fixed on the bracket 14. The pneumatic motor 18 is installed on the rotating part bracket, and a small gear 19 is installed on the motor shaft end. The small gear 19 is meshed with the large gear 20 mentioned above. The motor rotates, driving the small gear 19 to rotate, and then the large gear 20 rotates, and finally drives the brush holder 21 to rotate. The final action result is that the motor rotates, driving the brush 22 installed on the brush holder 21 to rotate. The composite nozzle 16 is installed on the bracket 14. When working, the brush 22 rotates first to clean the attachments on the thread, and then the composite nozzle 16 sprays the thread oil according to the set spraying amount. At the same time, the rotating brush 22 rotates to evenly apply the thread oil on the thread, so as to achieve the purpose of cleaning the thread and evenly applying oil. When the three-axis cylinder 15 is retracted, the rotating part bracket is lowered, and all the parts installed on the rotating part bracket are lowered, and finally the brush 22 is lowered. When the brush 22 needs to be cleaned after working for a period of time, the three-axis cylinder 15 is retracted, and the brush 22 is lowered. After the brush 22 is lowered to the same height as the cleaning brush cylinder 23, the motor is started to rotate, driving the brush 22 to rotate, and then the brush 22 rubs on the cleaning brush cylinder 23, so that the attachment on the brush 22 falls into the residue collection plate 13. When working, the telescopic mechanism of the device is extended, the core part assembly 12 of the cleaning button oiling is in an ascending state, and the pipe column 28 enters the device through the round opening of the upper cover 7. The pipe column 28 is guided into the device through the nylon cone head 24 on the core part assembly 12 of the cleaning button oiling, so that the thread is in the cleaning area of ​​the brush 22, and then the thread cleaning and oiling operations are performed.

[0048] In this example, the cleaning button oiling device is placed next to the driller's room, so that the driller can better observe the working status of the equipment and provide convenience for operation.

[0049] In this example, the control box of the Jiekou oiling device is placed next to the driller's room and is connected to the Jiekou oiling device through pipelines, so that two working modes, local operation and driller operation, can be realized.

[0050] The above description only describes one of the working modes. There are many ways to arrange this method. You only need to arrange the equipment on the manipulator pipe transportation channel. Since the cleaning buckle oiling device is installed on the drilling platform in a quick connection manner, several commonly used connection positions can often be set in actual work. According to different actual working conditions, the device can be quickly installed to the corresponding position.

[0051] The device is lightweight and can be connected to the drilling platform by quick connection, taking up little space. The device can be raised and lowered to meet the needs of automated processes. The core part of the thread cleaning execution adopts a floating design, which can adapt to a certain position error of the pipe string.

[0052] The brush head for cleaning threads is designed with a cleaning device. The thread cleaning actuator uses an air motor as the power and adopts an open gear transmission. The power only needs an air circuit, and there is no need to connect hydraulic and strong electricity as power. The thread oil pipeline has a heating design to meet the low temperature environment in winter. A cleaning residue collection device is designed.

[0053] Although the present invention has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made thereto based on the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A system for cleaning and oiling pipe strings during drilling and workover operations, characterized in that: include: A drilling platform (1-1), wherein a wellhead (1-5) is arranged on the drilling platform (1-1), and a stand box (1-6) for storing a drill pipe (1-7) is arranged in front of the wellhead (1-5); A derrick (1-2), wherein the derrick (1-2) is arranged above a wellhead (1-5), and a driller's room (1-8) is arranged on one side of the derrick (1-2); A drilling platform manipulator (1-3), wherein the drilling platform manipulator (1-3) is arranged at a passage position between the pipe box (1-6) and the wellhead (1-5); A clean button oiling device (1-4), the clean button oiling device (1-4) being arranged on one side of the drilling platform manipulator (1-3) and close to the front leg position of the derrick (1-2), and a clean button oiling device control box (1-9) for controlling the clean button oiling device (1-4) being arranged on one side of the driller's room (1-8); The system comprises a control box (1), wherein a thread oil pump (2) is arranged in the control box (1), an electric control box (3) is arranged on one side of the thread oil pump (2), an operation panel (4) is arranged on the top of the electric control box (3), a dust cover (5) of the operation panel is hinged on the top of the control box (1), the control box (1) is connected to a thread oiling device assembly (6) through a pipeline, an upper cover (7) is arranged on the top of the thread oiling device assembly (6), the upper cover (7) is fixed on an accordion protective cover (8), the bottom of the accordion protective cover (8) is connected to a lifting mechanism (9), a plurality of evenly distributed sliders (26) are arranged on both sides of the lifting mechanism (9), and the sliders are arranged on the upper and lower sides of the lifting mechanism (9). The block (26) is slidably connected to the corresponding nylon guide rail (11), the nylon guide rail (11) is fixed in the outer shell (27) of the cleaning button oiling device, telescopic cylinders (10) are provided on both sides of the lifting mechanism (9), the pistons at the top of the telescopic cylinder (10) are fixed on both sides of the lifting mechanism (9), and the bottom is fixed in the outer shell (27) of the cleaning button oiling device, nylon guide rails (11) are provided on both sides of the telescopic cylinder (10), and a cleaning button oiling core part assembly (12) is provided below the accordion protective cover (8), the cleaning button oiling core part assembly (12) is fixed in the lifting mechanism (9), and a residue collection tray (13) is provided below it; The cleaning button oiling core part assembly (12) comprises a bracket (14), a three-axis cylinder (15), a composite nozzle (16), a rotating part bracket (17), an air motor (18), a small gear (19), a large gear (20), a brush seat (21), a brush (22), a cleaning brush cylinder (23), a nylon cone head (24) and a central shaft (25). The cleaning button oiling core part assembly (12) is connected to a pipe column (28), the pipe column (28) enters the device through a circular opening of an upper cover (7), and the pipe column (28) is guided into the device through the nylon cone head 24 on the cleaning button oiling core part assembly (12).

2. A system for cleaning and oiling pipe strings during drilling and workover operations according to claim 1, characterized in that: The bottoms of the clean button oiling device (1-4) and the clean button oiling device control box (1-9) are both fixed by pin-shaft installation.

3. A method for cleaning and oiling a pipe string during drilling and workover operations according to claim 1 or 2, characterized in that: The steps are as follows: S1, after the drilling platform manipulator (1-3) takes the pipe from the pipe box (1-6), it first transports the drill pipe (1-7) to the top of the cleaning buckle oiling device (1-4); S2, after the drilling platform manipulator (1-3) reaches the predetermined position, the drill rod (1-7) is placed vertically and kept stationary; S3, controlling the button cleaning oiling device (1-4) to rise through the oiling device control box (1-9), and then the drill rod (1-7) enters the button cleaning oiling device (1-4) to perform button cleaning and oiling operations; S3. When the cleaning button oiling process is completed, the cleaning button oiling device (1-4) is controlled to descend through the oiling device control box (1-9), and the drilling platform manipulator (1-3) transports the drill pipe (1-7) to the wellhead (1-5).

4. The method for cleaning and oiling a pipe string during drilling and workover operations according to claim 3, characterized in that: The driller's room (1-8) is arranged close to the cleaning and oiling device (1-4) to observe the working status.

5. The method for cleaning and oiling a pipe string during drilling and workover operations according to claim 3, characterized in that: The oiling device control box (1-9) is respectively connected to the driller's room (1-8) and the cleaning button oiling device (1-4) through pipelines to realize two working modes: local operation and driller operation.

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