A pressurized wellhead data acquisition device

Abstract

This invention discloses a wellhead data acquisition device for pressurized tubing operations, comprising an upper base plate, a lower base plate, and a device housing. One end of the device housing is connected to the upper base plate, and the other end is connected to the lower base plate. A tubing perforation is provided between the upper and lower base plates for the tubing to pass through. An inner shell is also connected to the upper base plate, with one end movably connected to the inner shell via several rolling components; the other end of the inner shell is movably connected to the lower base plate via several rolling components. A data acquisition component is also mounted on the inner shell, used to collect various data from the tubing during operation. The inner shell can always move synchronously with the tubing, allowing the data acquisition component to continuously acquire data from the tubing. The data acquisition component mounted on the inner shell can collect various data from the tubing during operation.

Description

Technical Field

[0001] This invention belongs to the field of live operation technology and equipment, and specifically relates to a live operation tubing wellhead data acquisition device. Background Technology

[0002] Live well control is an advanced downhole operation technology that allows for well workover operations without requiring any well control. Compared to traditional conventional well control techniques, live well control technology fundamentally solves the problem of well contamination of the producing formation caused by the use of kill fluids in traditional well control operations. Furthermore, because live well control can be carried out directly without prior depressurization, it saves time and directly reduces operation costs and water injection costs.

[0003] However, live-line operations also place demands on the condition of the tubing string during the operation. Currently, whether it's drilling or well workover, all downhole operations involve manual inspection and dimensional measurement of the tubing string, drill pipe, and casing on the surface before they are inserted into the well, recording physical data such as the outer diameter and length of the tubing string. With the increasing digitalization requirements of the oil and gas industry, equipment is constantly developing towards automation and intelligence, especially live-line operation equipment, which faces higher demands on operations.

[0004] Some live-line workover rigs (LLPs) have devices specifically designed to identify tubing couplings, but these only display the identification of the tubing couplings, leading to distorted sensor data, significant detection bias, and low reliability. Because the tubing string vibrates or sways during downhole operations, and most current data acquisition devices cannot adapt to these swaying movements (poor tracking), some data acquisition devices may detach from the tubing string, resulting in distorted data. Furthermore, there is a lack of comprehensive and systematic data acquisition equipment that records basic data such as movement speed and depth, failing to provide sufficient data support for automated and intelligent equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a wellhead data acquisition device for pressurized tubing operations, in order to solve the problems of inaccurate data acquisition caused by the inability of current data acquisition equipment to maintain a stable connection with the tubing when it sways, and the relatively limited range of tubing data acquired by current data acquisition equipment.

[0006] To solve the above-mentioned technical problems, the present invention provides a pressurized wellhead data acquisition device, including an upper base plate, a lower base plate, and a device housing. One end of the device housing is connected to the upper base plate, and the other end of the device housing is connected to the lower base plate. A tubing perforation is also provided between the upper base plate and the lower base plate for the tubing to pass through.

[0007] The upper substrate is also connected to the inner shell of the device. One end of the upper substrate and the inner shell of the device are movably connected by several rolling components; the other end of the inner shell of the device is movably connected to the lower substrate by several rolling components.

[0008] The inner shell of the device is also equipped with a data acquisition component, which is used to collect various data during the use of the tubing.

[0009] Furthermore, the outer wall of the inner shell of the device is provided with several fixed slider sliding outer grooves in the axial direction, the inner wall of the inner shell of the device is provided with several fixed slider sliding inner grooves in the axial direction, and the inner shell of the device is also provided with several fixed slider channels. The fixed slider channels connect the fixed slider sliding outer grooves and the fixed slider sliding inner grooves, and two fixed slider channels are provided on one fixed slider sliding outer groove.

[0010] Furthermore, the data acquisition component includes an outer fixed slider and an inner fixed slider. The outer fixed slider is slidably connected to the outer sliding groove of the fixed slider, and the inner fixed slider is slidably connected to the inner sliding groove of the fixed slider. The outer fixed slider and the inner fixed slider are connected by a slider connecting rod, which passes through the fixed slider channel.

[0011] Furthermore, the slider connecting rod is provided with external threads, and the slider connecting rod is threadedly connected to the external fixed slider and the internal fixed slider.

[0012] Furthermore, a data acquisition arm is rotatably connected to the inner fixed slider. The two data acquisition arms connected to the two inner fixed sliders that are slidably connected on the same fixed slider sliding groove are rotatably connected to a rotating assembly. The rotating assembly and the two data acquisition arms rotatably connected together form a V-shaped structure.

[0013] Furthermore, a sensor is connected to the end of the data acquisition arm near the rotating assembly. The sensor is used to collect some data during the use of the tubing.

[0014] Furthermore, one of the outer fixed sliders near the inner shell of the device is fixedly connected to a synchronization ring, and the other of the outer fixed sliders near the inner shell of the device is fixedly connected to another synchronization ring.

[0015] Furthermore, several reset springs are also installed between the two synchronization rings.

[0016] Furthermore, a displacement sensing component is also installed between the two synchronization rings.

[0017] Furthermore, the inner shell of the device is provided with several data holes, through which the first data cable connecting the sensor passes.

[0018] A second data cable is connected to the displacement sensing component.

[0019] The device housing is equipped with a data interface, which is fixedly connected to a first data cable and a second data cable. The data interface is used to transmit the data collected by the displacement sensing component and / or the sensor.

[0020] The upper substrate and / or lower substrate are also provided with a number of substrate mounting holes, which are used to mount the upper substrate and / or lower substrate to other devices.

[0021] The beneficial effects of the pressurized wellhead data acquisition device provided by this invention are as follows:

[0022] 1. Compared with existing technologies, this device effectively solves the problem of poor tracking between the testing device and the test object through a "floating" structural design method. The upper base plate and one end of the inner shell of the device are movably connected by several rolling components; at the same time, several rolling components are also set between the other end of the inner shell of the device and the lower base plate, so that the inner shell of the device and the outer shell of the device, as well as the upper base plate and the lower base plate, can achieve a certain positional movement. This ensures that when the tubing string shakes downhole, the inner shell of the device can always shake synchronously with the tubing string, thereby allowing the data acquisition component to always collect data from the tubing string. This solves the problem of inaccurate data acquisition caused by the inability to stably connect the acquisition equipment and the tubing string.

[0023] 2. Compared with the existing technology, a data acquisition component is set on the inner shell of the device. This data acquisition component can collect various data such as the physical length, external dimensions, and movement speed of the tubing during use, thereby solving the problem that the tubing data collected by the data acquisition equipment is relatively simple, and in particular, it provides support for the automatic control of the live-line working machine. Attached Figure Description

[0024] Figure 1 This is a side view of the wellhead data acquisition device for pressurized operations;

[0025] Figure 2 This is a first internal schematic diagram of a pressurized wellhead data acquisition device.

[0026] Figure 3 This is a second internal schematic diagram of the pressurized wellhead data acquisition device.

[0027] Figure 4 This is a schematic diagram of the third internal part of the pressurized wellhead data acquisition device. Detailed Implementation

[0028] To better understand the purpose, structure, and function of this invention, the following description is provided in conjunction with the appendix. Figures 1 to 4 The present invention provides a more detailed description of a pressurized wellhead data acquisition device.

[0029] like Figures 1 to 4As shown in the figure, an embodiment of the present invention provides a pressurized wellhead data acquisition device. The device includes an upper base plate 100, a lower base plate 200, and a device housing 300. One end of the device housing 300 is connected to the upper base plate 100, and the other end is connected to the lower base plate 200. A tubing perforation 700 is provided between the upper base plate 100 and the lower base plate 200 for the tubing to pass through. The upper base plate 100 and / or the lower base plate 200 are also provided with a plurality of base plate mounting holes 800 for mounting the upper base plate 100 and / or the lower base plate 200 to other equipment. The upper base plate 100 and the lower base plate 200 can be connected to the device housing 300 by means of snap-fitting, welding, or other methods.

[0030] The upper substrate 100 is also connected to the inner shell 400 of the device. One end of the upper substrate 100 and the inner shell 400 of the device are movably connected by a plurality of rolling components 500. The other end of the inner shell 400 of the device is movably connected to the lower substrate 200 by a plurality of rolling components 500.

[0031] Before live-line operations, the live-line operation wellhead data acquisition device is installed at the inlet of the tubing string. It can be connected in series with other equipment, such as being installed above the live-line operation machine. Since the upper base plate 100 and / or the lower base plate 200 are provided with several base plate mounting holes 800, the live-line operation wellhead data acquisition device can be installed and fixed through these base plate mounting holes 800.

[0032] The inner shell 400 is housed within the inner cavity of the outer shell 300. During live-line operations, the tubing enters the inner cavity of the inner shell 400 through the tubing perforation 700 on the upper base plate 100, and then exits through the tubing perforation 700 on the lower base plate 200. Throughout the tubing's operation, the live-line data acquisition device is always attached to the tubing. As the tubing descends to the bottom of the well or ascends to the wellhead, the length of a single tubing section is limited, typically around 9 meters. Therefore, the live-line data acquisition device is attached to the outer wall of different tubing sections. A detachable connection is used between the two tubing sections, typically a coupling, where the outer diameter at the coupling is slightly larger than the outer diameter of the tubing. The coupling is usually a few millimeters thick.

[0033] In this invention, a data acquisition component is also provided on the inner shell 400 of the device, which is used to collect various data during the use of the tubing. The outer wall of the inner shell 400 is provided with a plurality of fixed slider sliding outer grooves 410 in the axial direction, and the inner wall of the inner shell 400 is provided with a plurality of fixed slider sliding inner grooves 420 in the axial direction. The inner shell 400 is also provided with a plurality of fixed slider channels 430, which connect the fixed slider sliding outer grooves 410 and the fixed slider sliding inner grooves 420. Two fixed slider channels 430 are provided on each fixed slider sliding outer groove 410.

[0034] The data acquisition component includes an outer fixed slider 411 and an inner fixed slider 421. The outer fixed slider 411 is slidably connected to the outer sliding groove 410 of the fixed slider, and the inner fixed slider 421 is slidably connected to the inner sliding groove 420 of the fixed slider. The outer fixed slider 411 and the inner fixed slider 421 are connected by a slider connecting rod 431, which passes through the fixed slider channel 430. The slider connecting rod 431 is provided with external threads, and the slider connecting rod 431 threadedly connects the outer fixed slider 411 and the inner fixed slider 421. The detachable fixed connection by the screw allows the outer fixed slider 411 and the inner fixed slider 421 to be disassembled, facilitating maintenance and replacement and extending the service life of the pressurized wellhead data acquisition device.

[0035] A data acquisition arm 610 is rotatably connected to the inner fixed slider 421. Two data acquisition arms 610 connected to the two inner fixed sliders 421, which are slidably connected to the same inner sliding groove 420 of the fixed slider, are rotatably connected to a rotating assembly 620. The rotating assembly 620 and the two rotatably connected data acquisition arms 610 form a V-shaped structure. A sensor 640 is connected to the end of the data acquisition arm 610 near the rotating assembly 620. The sensor 640 is used to collect some data during the use of the tubing.

[0036] It should be noted that one of the outer fixed sliders 411 near the inner shell 400 of the device is fixedly connected to a synchronizing ring 440, and another synchronizing ring 440 is fixedly connected to the other outer fixed slider 411 near the inner shell 400 of the device. Several return springs 630 are also provided between the two synchronizing rings 440. A displacement sensing component 650 is also provided between the two synchronizing rings 440.

[0037] After the tubing passes through the pressurized wellhead data acquisition device, the outer wall of the tubing remains in contact with the rotating component 620 in the data acquisition assembly.

[0038] Current data acquisition equipment sometimes suffers from data distortion due to tubing sway, which prevents stable contact between the acquisition device and the tubing. This swaying causes horizontal displacement. Therefore, several rolling components 500 are installed on the upper base plate 100 and lower base plate 200 where they connect to the inner shell 400. When the tubing in the well moves, it also causes the data acquisition components and the inner shell 400 at the wellhead to move horizontally. The rolling components 500 ensure that the inner shell 400, the data acquisition components, and the tubing remain relatively stationary in the horizontal direction. The rotating component 620 always maintains contact with the outer wall of the tubing, meaning the data acquisition components move synchronously with the tubing's sway. This ensures the data acquisition components consistently acquire reliable data and prevents data distortion caused by the rotating component 620 detaching from the tubing. Meanwhile, the upper base plate 100, lower base plate 200, and outer shell 300 move relative to the tubing in the horizontal direction. Essentially, the rolling components 500 counteract the tubing sway. The rolling assembly 500 used here can be a ball bearing or an assembly that is partly a connecting rod and partly a ball bearing, with the connecting rod portion mounted on the inner housing 400 of the device. This design allows the wellhead data acquisition device for pressurized operations to reduce the impact of changes in the direction of tubing sway, resulting in strong tracking capability.

[0039] In some embodiments, the upper substrate 100 and / or the lower substrate 200 are provided with a limiting groove on the side facing the inner shell 400 of the device, so that the rolling assembly 500 moves in the limiting groove and prevents the inner shell 400 of the device from moving outside the range of the upper substrate 100 and / or the lower substrate 200.

[0040] The contact force between the rotating component 620 and the outer wall of the tubing in the data acquisition assembly mainly comes from the return spring 630. After the tubing contacts the rotating component 620, it will press the rotating component 620 towards the inner wall of the inner shell 400 of the device. Since the rotating component 620 is rotatably connected to the two data acquisition arms 610, the ends of the two data acquisition arms 610 not connected to the rotating component 620 will move away from each other. The ends of the data acquisition arms 610 not connected to the rotating component 620 are rotatably connected to the inner fixed slider 421. At this time, the inner fixed slider 421 will slide along the inner groove 420 of the fixed slider sliding in opposite directions, thereby driving the two outer fixed sliders 411 on the outer groove 410 of the same fixed slider to slide in opposite directions, which in turn drives the synchronization rings 440 to move in opposite directions, causing the return spring 630 to open. At this time, the return spring 630 maintains a tension on the two synchronization rings 440. This pulling force will cause the two synchronizing rings 440 to tend to move towards each other. The synchronizing rings 440 are connected to the outer fixed slider 411, which in turn is connected to the inner fixed slider 421. Therefore, the two inner fixed sliders 421 on the same inner sliding groove 420 will tend to slide towards each other. Consequently, the ends of the two data acquisition arms 610 not connected to the rotating assembly 620 will tend to move towards each other. Since the length of the data acquisition arm 610 is fixed, the rotating assembly 620 tends to move away from the inner shell 400 of the device, meaning the rotating assembly 620 always maintains contact with the outer wall of the tube column.

[0041] The rotating component 620 always maintains contact with the outer wall of the tubing. Combined with the rolling component 500, even when the tubing shakes, the rotating component 620 always maintains contact with the outer wall of the tubing, ensuring that the acquired data is always accurate and reliable.

[0042] During the ascent and descent of the tubing string, the speed and length data are crucial. Improper speed control during descent can damage the tubing, related sensors, or even cause a blowout. In practice, wells are often not vertical but have bends. Excessive tubing speed can cause the tubing to hit these bends, damaging the associated tools. In pressurized operations, besides speed, there is also an upward force. Control equipment is connected to the tubing string, and if the speed deviates from the acceptable range, increased control force is required. Insufficient or untimely control force can lead to a blowout. Furthermore, excessively rapid ascent or descent can damage the control equipment. Accurate speed detection provides precise data for tubing speed control.

[0043] In this invention, data such as the speed and length of the tubing are acquired by rotating the rotating assembly 620 as the tubing rises or falls. A sensor 640 positioned next to the rotating assembly 620 detects the rotational speed of the assembly, and the current rising or falling speed and length of the tubing are obtained from this speed. In addition to measuring the speed and length of the tubing, the type of sensor 640 can be changed to detect the rotation of the rotating assembly 620, or even to directly acquire more data without relying on the rotation of the assembly 620. For example, one or more of the sensors 640 can be replaced with non-destructive testing sensors to obtain data on the tubing wall thickness or corrosion status. This provides sufficient data support for the control of the tubing.

[0044] In some embodiments, the rotating component 620 can be directly replaced by a rotatable sensing device, enabling the rotating component 620 itself to acquire some data from the tubing string. This improves the data acquisition efficiency of the entire live-line wellhead data acquisition device.

[0045] When the tubing string is working in the well, it is also very important to identify the couplings connecting the two tubing strings. This is because some operations need to avoid the couplings, meaning some operations need to be performed directly on the tubing string. If the operation is performed on the couplings, it will cause damage to the couplings or failure of the operation.

[0046] Currently, some devices use multiple detectors to detect the tubing. If the tubing shakes or experiences other issues, some detectors may detach from the tubing, leading to errors in the identification of the joint clamps.

[0047] In this invention, the designed synchronization ring 440 plays another important role. When the rotating component 620 encounters the clamp, and some of the rotating components 620 retract towards the inner wall of the device's inner shell 400, due to the driving force of the synchronization ring 440, all the data acquisition arms 610 will rotate relative to the inner fixed slider 421, causing all the rotating components 620 to retract towards the inner wall of the device's inner shell 400. At this time, the displacement sensing component 650 connected between the two synchronization rings 440 will detect the positional change between the two synchronization rings 440.

[0048] The advantage of this design is that all rotating components 620 retreat synchronously, preventing measurement deviations caused by partial retreat due to factors such as shaking. During operation, the thickness of the couplings used is generally in the millimeter range or around 1 cm, while the position change data detected by the displacement sensing component 650 is larger than that detected directly by the rotating component 620. This makes the coupling detection more accurate. Furthermore, since the dimensions of the couplings used in a single operation are known, comparing the predicted coupling dimensions with the detected dimensions allows for the identification of couplings. Of course, before lowering the couplings into the well, a coupling location needs to be selected as a reference point. The coupling position is determined by cross-referencing the length of the downhole tubing and the displacement sensing component 650, thus improving the accuracy of coupling location determination. Additionally, this operating procedure and device can also detect other tools attached to the tubing string.

[0049] Understandably, the inner casing 400 of the device is provided with several data holes 660, which are used to connect the first data cable 670 of the sensor 640 to pass through, so that the data detected by each sensor 640 can be transmitted out through the data cable 670.

[0050] Furthermore, a second data cable 680 is connected to the displacement sensing component 650; a data interface 690 is provided on the device housing 300, and the data interface 690 is fixedly connected to the first data cable 670 and the second data cable 680. The data interface 690 is used to transmit the data collected by the displacement sensing component 650 and / or the sensor 640. During operation, the operator can read the various data collected by the pressurized wellhead data acquisition device through the data interface 690.

[0051] The upper substrate 100 and / or the lower substrate 200 are also provided with a plurality of substrate mounting holes 800, which are used to mount the upper substrate 100 and / or the lower substrate 200 onto other equipment, such as onto a live press.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wellhead data acquisition device for pressurized operations, characterized in that, The device includes an upper substrate (100), a lower substrate (200), and a device housing (300). One end of the device housing (300) is connected to the upper substrate (100), and the other end of the device housing (300) is connected to the lower substrate (200). A through-hole (700) for a tube column is provided between the upper substrate (100) and the lower substrate (200). The upper substrate (100) is also connected to the inner shell (400). One end of the upper substrate (100) and the inner shell (400) are movably connected by a plurality of rolling components (500). The other end of the inner shell (400) is movably connected to the lower substrate (200) by a plurality of rolling components (500). The inner shell (400) of the device is also provided with a data acquisition component, which is used to collect various data of the tubing during use; The outer wall of the inner shell (400) of the device is provided with a plurality of fixed slider sliding outer grooves (410) in the axial direction, and the inner wall of the inner shell (400) of the device is provided with a plurality of fixed slider sliding inner grooves (420) in the axial direction. The inner shell (400) of the device is also provided with a plurality of fixed slider channels (430), and the fixed slider channels (430) connect the fixed slider sliding outer grooves (410) and the fixed slider sliding inner grooves (420). Two fixed slider channels (430) are provided on one fixed slider sliding outer groove (410). The data acquisition component includes an outer fixed slider (411) and an inner fixed slider (421). The outer fixed slider (411) is slidably connected to the outer sliding groove (410) of the fixed slider, and the inner fixed slider (421) is slidably connected to the inner sliding groove (420) of the fixed slider. The outer fixed slider (411) and the inner fixed slider (421) are connected by a slider connecting rod (431), which passes through the fixed slider channel (430). The slider connecting rod (431) is provided with external threads, and the slider connecting rod (431) is threaded to the external fixed slider (411) and the internal fixed slider (421); Data acquisition arms (610) are rotatably connected to the inner fixed slider (421). The two data acquisition arms (610) connected to the two inner fixed sliders (421) that are slidably connected to the same inner sliding groove (420) of the fixed slider are rotatably connected to a rotating assembly (620). The rotating assembly (620) and the two data acquisition arms (610) rotatably connected to it form a V-shaped structure.

2. The pressurized wellhead data acquisition device according to claim 1, characterized in that, The data acquisition arm (610) has a sensor (640) connected to one end near the rotating assembly (620), and the sensor (640) is used to collect some data during the use of the tubing.

3. The pressurized wellhead data acquisition device according to claim 2, characterized in that, One of the external fixed sliders (411) near the inner shell (400) of the device is fixedly connected to a synchronization ring (440), and the other of the external fixed sliders (411) near the inner shell (400) of the device is fixedly connected to another synchronization ring (440).

4. The pressurized wellhead data acquisition device according to claim 3, characterized in that, Several return springs (630) are also provided between the two synchronization rings (440).

5. The pressurized wellhead data acquisition device according to claim 4, characterized in that, A displacement sensing component (650) is also provided between the two synchronization rings (440).

6. The live-line wellhead data acquisition device according to claim 5, characterized in that, The inner shell (400) of the device is provided with a plurality of data holes (660), and the data holes (660) are used for the first data cable (670) of the sensor (640) to pass through; A second data cable (680) is connected to the displacement sensing component (650); The device housing (300) is provided with a data interface (690), the data interface (690) is fixedly connected to the first data cable (670) and the second data cable (680), and the data interface (690) is used to transmit the data collected by the displacement sensing component (650) and / or the sensor (640). The upper substrate (100) and / or the lower substrate (200) are further provided with a plurality of substrate mounting holes (800), which are used to mount the upper substrate (100) and / or the lower substrate (200) to other devices.

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