Coiled tubing numerical control pipe racker
By employing a ball screw and linear guide transmission system in the coiled tubing equipment, combined with stepper motor and encoder control, the problems of pipe winding jamming and low transmission accuracy have been solved, achieving efficient and precise tubing winding and monitoring, thus improving operational efficiency and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SINOPEK PETROLEUM IZHINIRING TECH SERVIS KO LTD
- Filing Date
- 2022-10-27
- Publication Date
- 2026-06-16
AI Technical Summary
In existing coiled tubing equipment, the tubing manifold is prone to jamming and damage, has low transmission accuracy, and is difficult to adapt to different tubing diameters, resulting in messy coiled tubing arrangement, affecting drum capacity and well entry efficiency.
Using ball screws and linear guides as transmission and support components, combined with stepper motors and encoders, digital control is achieved to ensure that the working platform moves synchronously with the drum. Through motor speed adjustment and encoder data transmission, the oil pipes are ensured to be neatly wound on the drum.
It improves transmission efficiency and precision, ensures that the continuous tubing is neatly wound on the drum, reduces misalignment, and improves operating efficiency and equipment lifespan.
Smart Images
Figure CN115898295B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of petroleum machinery in oil drilling and production engineering, and more specifically, to a CNC coiled tubing manifold. Background Technology
[0002] Coiled tubing equipment is a rapidly developing type of equipment in the oil and gas industry, widely used in oilfield services. The coiled tubing drum, as the container and support device for the coiled tubing, is a crucial component of the coiled tubing equipment; its functionality determines the overall performance of the equipment. When operating coiled tubing equipment for tubing winding operations, it is essential to ensure that the coiled tubing is neatly and tightly wound onto the drum. Disorganized coiled tubing arrangement directly affects the drum's capacity, reduces the length of coiled tubing it can support, and can cause misalignment, making well entry difficult and damaging the tubing. Furthermore, the length of the coiled tubing must be monitored to determine the appropriate well depth. Most coiled tubing installation machines use a bidirectional screw drive system. While simple, this method is difficult to manufacture, resulting in a single screw being unsuitable for different coiled tubing diameters. In addition, the pipe-laying device suffers from drawbacks such as easy jamming, damage, and low transmission accuracy, causing inconvenience to normal coiled tubing operations.
[0003] With improvements in the quality and reliability of coiled tubing, as well as advancements in related equipment such as increased tensile strength, improved welding technology, and the development of larger-sized coiled tubing, the application scope of coiled tubing operations has expanded significantly. From its initial use in logging and perforation, well fluid removal, cementing, acid fracturing, well washing, sand control, fishing, downhole enlargement, and as a transport tool or permanent equipment in production, its applications have broadened to include drilling, well completion, oil production, and well workover, solving many problems that conventional techniques struggle with. However, several issues remain during coiled tubing operations. For example, disordered coiled tubing arrangement during operation directly affects the capacity of the entire tubing drum, reducing the length of coiled tubing it can support. It can also cause misalignment, making coiled tubing insertion difficult and potentially damaging the tubing.
[0004] Coiled tubing equipment is a rapidly developing new type of equipment in the petroleum machinery field, and it is widely used in oilfield services. During the operation of coiled tubing machines, the tubing manifold presents a series of problems, mainly: 1. The tubing manifold is prone to jamming, damage, and has low transmission accuracy, causing inconvenience to normal coiled tubing operations; 2. The bidirectional lead screw is difficult to machine and cannot be applied to different coiled tubing diameters; 3. Disorganized coiled tubing arrangement directly affects the capacity of the entire tubing drum, reducing the length of coiled tubing the drum can support, and can also cause misalignment of the coiled tubing, making it difficult to insert the coiled tubing into the well and damaging the coiled tubing. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide a CNC tubing manifold with high efficiency and smooth transmission.
[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A CNC tubing manipulator is constructed and installed on the drum of a tubing machine. It includes a right end plate, an upper guide rail seat, a lower guide rail seat, a linear guide rail, a ball screw, a nut seat, a sliding platform, a tubing housing, a motor base, a stepper motor, a control box, and a left end plate. The upper guide rail seat, lower guide rail seat, and ball screw are arranged between the right end plate and the left end plate. The upper guide rail seat is located on the upper part of the right end plate and the left end plate, and the lower guide rail seat is located on the lower part of the right end plate and the left end plate. A ball screw is positioned between an upper guide rail seat and a lower guide rail seat. Linear guide rails are mounted on the upper and lower guide rail seats. A nut seat is mounted on the ball screw. A sliding platform is mounted on the nut seat. A cylinder is mounted on the sliding platform. A pipe packing box guide is mounted inside the cylinder. A pipe packing box body is mounted on the top of the pipe packing box guide. A motor base is mounted on the left end of the ball screw. A stepper motor is mounted on the upper part of the motor base. A control box is mounted on the lower part of the motor base. The motor base, stepper motor, and control box are all located on the left side of the left end plate.
[0007] According to the above scheme, the pipe laying box is equipped with an adjustment function button to control the displacement of the pipe laying device. When the pipe laying device is ahead of or behind the roller pipe laying, the oil pipe touches the adjustment button to adjust the displacement of the pipe laying device, so that the position of the pipe laying device and the position of the roller pipe laying (winding) are on the same plane.
[0008] According to the above scheme, an encoder is installed on the roller shaft. The encoder transmits the roller rotation data to the stepper motor of the pipe laying device, so that the roller rotates one revolution and the distance the working platform moves is the same as the outer diameter of the oil pipe.
[0009] The CNC tubing manifold of the present invention has the following advantages:
[0010] 1. This invention uses ball screws and linear guides as transmission and support components, which has high transmission efficiency. Both ball screws and linear guides are standard parts and easy to purchase.
[0011] 2. The present invention is equipped with motor speed adjustment buttons on both the left and right ends of the pipe box. When the working platform is ahead or behind, the motor speed can be automatically adjusted to ensure that the distance the working platform moves is consistent with the outer diameter of the oil pipe when the drum rotates once.
[0012] 3. In this invention, when operating the coiled tubing equipment for tubing winding operations, it can ensure that the coiled tubing is neatly and tightly wound on the tubing drum. Attached Figure Description
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0014] Figure 1 This is a schematic diagram of the first structure of a CNC tubing manifold of the present invention;
[0015] Figure 2 This is a schematic diagram of the second structure of a CNC tubing manifold of the present invention;
[0016] Figure 3 This is a schematic diagram of the oil pipe roller of the present invention;
[0017] Figure 4 This is a schematic diagram of the pipe box adjustment button of the present invention. Detailed Implementation
[0018] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0019] like Figure 1-4As shown, a CNC tubing manifold of the present invention includes a right end plate 101, an upper guide rail seat 102, a lower guide rail seat 113, a linear guide rail 103, a ball screw 104, a nut seat 105, a sliding platform 106, a tubing housing 107, a motor seat 108, a stepper motor 109, a control box 110, and a left end plate 111. The upper guide rail seat 102, the lower guide rail seat 113, and the ball screw 104 are arranged between the right end plate 101 and the left end plate 111. The upper guide rail seat 102 is located on the upper part of the right end plate 101 and the left end plate 111, and the lower guide rail seat 113 is located on the lower part of the right end plate 101 and the left end plate 111. The lead screw 104 is disposed between the upper guide rail seat 102 and the lower guide rail seat 113. Linear guide rails 103 are disposed on the upper guide rail seat 102 and the lower guide rail seat 113. A nut seat 105 is disposed on the ball screw 104. A sliding platform 106 is disposed on the nut seat 105. A cylinder is disposed on the sliding platform 106. A pipe packing box guide is disposed inside the cylinder. A pipe packing box body 107 is disposed on the top of the pipe packing box guide. A motor base is disposed on the left end of the ball screw 104. A stepper motor 109 is disposed on the upper part of the motor base. A control box 110 is disposed on the lower part of the motor base. The motor base, the stepper motor 109 and the control box 110 are all disposed on the left side outside the left end plate 111.
[0020] The pipe-laying housing 107 has motor speed adjustment buttons inside on both sides. When the pipe-laying device leads or lags behind the roller pipe-laying device, the oil pipe touches the adjustment button to adjust the displacement of the pipe-laying device, so that the position of the pipe-laying device and the roller pipe-laying (winding) position are on the same plane. An encoder 3 is installed on the roller shaft. The encoder 3 transmits the roller rotation data to the stepper motor of the pipe-laying device, so that the roller 2 rotates one revolution. The distance that the working platform moves is the same as the outer diameter of the oil pipe.
[0021] This invention relates to a component of the coiled tubing machine's drum. Its main function is to ensure that the coiled tubing is neatly and tightly wound onto the drum during tubing winding operations, and to monitor the length of the coiled tubing to determine the well depth. First, a corresponding control program is selected based on the different coiled tubing diameters. The stepper motor 109 of the tubing feeder rotates according to the speed of the drum motor, ensuring that the distance the feeder's worktable moves is exactly equal to the outer diameter of the tubing during one drum rotation. By controlling the stepper motor, different diameter drums can be used for tubing delivery or winding.
[0022] In a preferred embodiment of the present invention, the rotation of the ball screw 104 is driven by a stepper motor 109, and the reciprocating movement of the working platform is controlled by controlling the forward and reverse rotation direction of the stepper motor 109, enabling digital control. The use of the ball screw 104 in the pipe arranger improves transmission efficiency, and the preload on the ball screw 104 nut reduces transmission clearance, thereby improving transmission accuracy. A linear guide rail 103 supports the requirements for continuous tubing operation, including pipe arrangement or winding, and supports the reciprocating movement of the pipe arranger's worktable, resulting in higher guiding accuracy, higher transmission efficiency, and easier pipe winding and unwinding by the drum. Motor speed adjustment buttons are installed at both ends of the pipe arrangement housing 7. When the working platform is ahead or behind, the motor speed is automatically adjusted to ensure that the distance the working platform moves is exactly the outer diameter of the tubing when the drum rotates one revolution. An encoder is installed on the drum drive motor, and the encoder information controls the speed of the stepper motor 109. The stepper motor 109 digitally controls the pipe winding and unwinding displacement of the pipe arranger, ensuring that the drum's pipe winding and unwinding displacements are the same, thus achieving orderly arrangement of the continuous tubing on the drum. The automatic adjustment function button installed in the pipe packing box 7 can automatically adjust the speed if the pipe packer is too fast or too slow at a certain time, so that the displacement of the pipe packer matches the speed of the drum, thereby improving the efficiency of coiled tubing take-up and pipe packing on the drum.
[0023] The installation steps of this invention are as follows:
[0024] S1. Install the two guide rail seats on the left and right end plates, and then install the linear guide rail 103 on the upper guide rail seat 102 and the lower guide rail seat 113. Parallelism, spacing and other checks should be performed in the plane.
[0025] S2. Install the ball screw 104 on the left end plate 111 and the right end plate 101, then install the sliding platform 106 on the guide rail and connect it with the nut seat 105, and then insert the pipe box conduit into the cylindrical tube of the sliding platform 106.
[0026] S3. Mount the stepper motor 109 on the motor base 108, connect it to the ball screw 104 with a coupling, and then connect the various wiring terminals of the stepper motor 109 control terminal.
[0027] The operation steps of this invention are as follows:
[0028] S1. Select the corresponding control program for stepper motor 109 on the control panel in the control room according to the diameter of the coiled tubing.
[0029] S2, Stepper motor 109 adjusts its speed according to the rotational speed of the drum to match the two;
[0030] S3. If the working platform exceeds or lags behind the pipe laying speed, the speed of the stepper motor 109 can be adjusted by the automatic adjustment button on the pipe laying box 7 so that the distance the working platform moves after one revolution of the drum is exactly equal to the outer diameter of the oil pipe.
[0031] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.
Claims
1. A CNC tubing feeder, mounted on the drum of a tubing machine, characterized in that, The system includes a right end plate, an upper guide rail seat, a lower guide rail seat, a linear guide rail, a ball screw, a nut seat, a sliding platform, a pipe housing, a motor base, a stepper motor, a control box, and a left end plate. The upper guide rail seat, lower guide rail seat, and ball screw are disposed between the right and left end plates. The upper guide rail seat is located on the upper part of the right and left end plates, and the lower guide rail seat is located on the lower part of the right and left end plates. The ball screw is disposed between the upper and lower guide rail seats. The upper and lower guide rail seats are equipped with… A linear guide rail is provided. A nut seat is provided on the ball screw. A sliding platform is provided on the nut seat. A cylinder is provided on the sliding platform. A pipe packing box guide is provided inside the cylinder. A pipe packing box body is provided on the top of the pipe packing box guide. A motor base is provided at the left end of the ball screw. A stepper motor is provided on the upper part of the motor base. The stepper motor drives the ball screw to rotate. A control box is provided at the lower part of the motor base. The motor base, stepper motor and control box are all located on the left side of the left end plate. The operation steps are as follows: S1. Select the corresponding control program for the stepper motor (109) on the control panel in the control room according to the diameter of the coiled tubing; S2. The stepper motor (109) adjusts its speed according to the rotational speed of the drum to match the two. S3. If the working platform exceeds or lags behind the pipe laying speed, the speed of the stepper motor (109) can be adjusted by the automatic adjustment button on the pipe laying box (7) so that the distance the working platform moves after one revolution of the drum is exactly equal to the outer diameter of the oil pipe.
2. The CNC tubing feeder according to claim 1, characterized in that, Stepper motor speed adjustment buttons are installed inside the left and right sides of the pipe housing; the motor speed adjustment buttons control the acceleration and deceleration of the stepper motor.
3. The CNC tubing manifold according to claim 1, characterized in that, The pipe laying box is equipped with an adjustment button to control the displacement of the pipe laying device. When the pipe laying device is ahead of or behind the roller pipe laying, the oil pipe touches the adjustment button to adjust the displacement of the pipe laying device so that the position of the pipe laying device and the position of the roller pipe laying are on the same plane.
4. The CNC tubing manifold according to claim 1, characterized in that, An encoder is installed on the roller shaft. The encoder transmits the roller rotation data to the stepper motor of the pipe laying device, so that the roller rotates one revolution and the working platform moves a distance that is the same as the outer diameter of the oil pipe.