Oil horizontal well traction device

Abstract

The invention discloses a petroleum horizontal well traction device. Wherein the traction device comprises a first power assembly, a second power assembly, a third power assembly and a fourth power assembly; the first power assembly is arranged in the shell and is internally provided with a control element and a power element; the driving wheel set penetrates through the outer surface of the shell and can be freely expanded, and the driving wheel set is connected with the first power assembly through a transmission assembly; a certain included angle is formed between the driving wheels of the adjacent driving wheel groups; second power assemblies are arranged at the two ends of the shell and connected with the driving wheel sets through telescopic shafts. By arranging the driving wheel set capable of expanding freely, the driving wheel set can adapt to wellbores with different diameters, so that the time and cost for replacing equipment with different sizes are reduced. In actual operation, the diameter of the shaft may be different due to geological conditions or operation requirements, and the driving wheel set with the free expansion function can flexibly deal with the situation, so that the flexibility and applicability of operation are improved.

Description

Technical Field

[0001] The present application relates to the technical field of oil exploration, and in particular to a traction device for a horizontal oil well. Background Art

[0002] The oil horizontal well traction device is a traction device used to detect the bottom of the oil well. Its working principle is to extract oil by continuously pulling down the traction tool. This device usually includes a long steel rope or metal chain, which is continuously pulled down by ground machinery to suck out the oil at the wellhead.

[0003] A horizontal well is a well with a drilling inclination angle of 90° in the horizontal direction. The logging instrument is a measuring device that obtains downhole information. In a horizontal well, the logging instrument cannot be lowered into the well by its own gravity. Using a tractor is a way to transport logging instruments in a horizontal well. The existing horizontal well tractors transmit power through sprockets or toothed belts, and have a complicated structure and are prone to failure.

[0004] In summary, a new oil horizontal well traction device is urgently needed to solve the problem that the existing traction device has a complicated structure and is prone to failure. Summary of the invention

[0005] The present application provides a petroleum horizontal well traction device, aiming to solve the problem of complicated structure and easy failure in the traction device in the prior art.

[0006] In a first aspect of the present application, a traction device for a petroleum horizontal well is proposed, the traction device comprising:

[0007] A housing, one end of which is fixedly connected to the connecting rod and the other end of which is connected to the drill bit;

[0008] A first power assembly is disposed inside the housing and has a control element and a power element therein;

[0009] A freely expandable driving wheel assembly that penetrates through the outer surface of the shell, and the driving wheel assembly is connected to the first power assembly through a transmission assembly;

[0010] The driving wheels between adjacent driving wheel groups are provided with a certain angle;

[0011] A second power assembly is provided at both ends of the shell, and the second power assembly is connected to the driving wheel assembly through a telescopic shaft.

[0012] Furthermore, the driving wheel set comprises:

[0013] The reduction gear set is composed of a plurality of spur gears, the front end of which is meshed with the phase-changing gear and the rear end is meshed with the creeper wheel;

[0014] The crawler wheel is fixed in the housing through a support frame, a tooth key is provided at the edge of the crawler wheel, and the crawler wheel is meshed and connected with the reduction gear set through the tooth key;

[0015] The phase-changing gear is arranged between the reduction gear set and the first power assembly, and the power of the first power assembly is transmitted to the reduction gear set through the phase-changing gear.

[0016] Furthermore, the second power group includes:

[0017] The oil pump is arranged at both ends of the housing to provide a power source for the second power group;

[0018] The telescopic rod and the telescopic cylinder are connected to the oil pump through a pipeline;

[0019] The central controller and the sensor, the central controller is linearly connected to the oil pump, and the sensor is linearly connected to the central controller.

[0020] Furthermore, the phase-changing gear is a helical gear.

[0021] The present application has the following beneficial effects: by providing a freely expandable driving wheel group, the driving wheel group can adapt to wellbores of different diameters, thereby reducing the time and cost of replacing equipment of different sizes. In actual operation, the diameter of the wellbore may vary due to geological conditions or operational requirements, and the driving wheel group with a free expansion function can flexibly cope with this situation, thereby improving the flexibility and applicability of the operation.

[0022] Secondly, the combination of the control element and the power element of the first power assembly makes the operation of the entire traction device more stable and precise. Precise control of the drive wheel group through the control element can ensure the efficient progress of underground operations while minimizing the potential risk of accidents.

[0023] In addition, the design of the drive wheel group can adapt to different wellbore diameters, which reduces the frequency of equipment replacement and the problems that may occur during maintenance and repair. At the same time, the combined design of control components and power components also makes maintenance more convenient, allowing problems to be quickly located and solved, reducing downtime and production losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the oil horizontal well traction device of the present application.

[0025] Description of main component symbols:

[0026] 100. Oil horizontal well traction device; 110. Oil hole; 120. First power assembly; 130. Driving wheel; 131. Support frame; 132. Sensor; 140. Second power assembly; 150. Transmission assembly. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0028] In the description of this application, unless otherwise clearly defined, words such as setting and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in this application based on the specific content of the technical solution.

[0029] By providing a first power assembly of a control element and a power element inside the oil horizontal well traction device and a driving wheel group that can freely expand while penetrating the outer surface of the shell, the driving wheel group can be adapted to wellbores of different diameters, reducing the time and cost of replacing equipment of different sizes. The driving wheel group can be precisely controlled by the control element to ensure efficient downhole operations, while minimizing potential accident risks, quickly locating and solving problems, and reducing downtime and production losses.

[0030] Embodiment 1

[0031] See also Figure 1 The oil horizontal well traction device 100 of the present application comprises the following:

[0032] A housing, one end of which is fixedly connected to the connecting rod and the other end of which is connected to the drill bit;

[0033] A first power assembly 120 is disposed inside the housing and has a control element and a power element therein;

[0034] A driving wheel 130 group that penetrates the outer surface of the housing and can expand freely, and the driving wheel 130 group is connected to the first power assembly 120 through the transmission assembly 150;

[0035] The driving wheels 130 between adjacent groups of driving wheels 130 are provided with a certain angle;

[0036] A second power assembly 140 is disposed at both ends of the housing, and the second power assembly 140 is connected to the driving wheel 130 via a telescopic shaft.

[0037] In this embodiment, the shell is used to protect and fix the internal components. In this embodiment, the shape of the shell is preferably capsule-shaped. One end of the shell is fixedly connected to the connecting rod through a thread, and the other end is connected to the drill bit through a thread. A first power component 120 of a control element and a power element is provided inside the shell, wherein the control element is used to control the kinetic energy and start and stop of the power element, and the power element is used to provide kinetic energy for the entire device, wherein the power element can specifically be a motor or a hydraulic cylinder; the first power component 120 is used to drive the entire device to move forward along the oil hole 110.

[0038] The petroleum horizontal traction device also includes a set of driving wheels 130, which penetrate the outer surface of the shell and can expand freely so that they are fixedly connected to the side wall of the oil hole 110. The driving wheels 130 are connected to the first power component 120 through a transmission component 150, wherein the transmission component 150 is used to transmit the power of the first power component 120 to the driving wheels 130, and the driving wheels 130 rotate to achieve horizontal movement of the device.

[0039] In another embodiment, the drive wheels 130 between adjacent groups of drive wheels 130 are provided with a certain angle. It should be explained that a plurality of drive wheel groups 130 are fixed in the shell, and each drive wheel group 130 is provided with a plurality of drive wheels 130. The coordinated rotation of different drive wheel groups 130 enables the device to move forward at different speeds. The angle between adjacent groups of drive wheels 130 can be 30 degrees, 60 degrees, or 90 degrees. The specific angle value can be selected according to actual needs.

[0040] In another embodiment, a second power assembly 140 is provided at both ends of the shell, and the second power assembly 140 is connected to the drive wheel 130 group through a telescopic shaft. The second power assembly 140 is used to open or close the drive wheel 130 group relative to the shell through the telescopic shaft. When the traction device is in normal state, the drive wheel 130 group is closed and retracted into the shell. When the drive wheel 130 group drives the traction device forward, the drive wheel 130 group is opened so that the drive wheel 130 is squeezed against the inner wall of the oil hole 110.

[0041] In summary, when the oil horizontal well traction device 100 is assembled, the control element and the power element are assembled into the first power assembly 120, and then the power assembly is fixed in the shell, and the drive wheel 130 group is connected to the first power assembly 120 through the transmission assembly 150. The assembled drive wheel 130 group forms a certain angle with the adjacent drive wheel 130 group. The second power assembly 140 is installed at both ends of the shell, and the second power assembly 140 is connected to the drive wheel 130 through the telescopic shaft. The telescopic shaft is driven by the second power assembly 140 to open or close the drive wheel 130 group.

[0042] During operation, the shell is sent into the oil hole 110, and the second power component 140 drives the telescopic shaft to extend. Under the action of the drive shaft, the drive wheel 130 group is driven to expand until the drive wheel 130 group is squeezed against the side wall of the oil hole 110. The first power component 120 drives the transmission component 150 to rotate, and under the action of the drive component, the drive wheel 130 group is driven forward or backward, thereby driving the connecting rod at the rear end of the shell to enter the oil hole 110, or driving the connecting rod to withdraw from the oil hole 110.

[0043] By providing a freely expandable driving wheel 130 set, the driving wheel 130 set can adapt to wellbores of different diameters, thereby reducing the time and cost of replacing equipment of different sizes. In actual operation, the diameter of the wellbore may vary due to geological conditions or operational requirements, and the driving wheel 130 set with a freely expandable function can flexibly cope with such a situation, thereby improving the flexibility and applicability of the operation.

[0044] Secondly, the combination of the control element and the power element of the first power assembly 120 makes the operation of the entire traction device more stable and precise. By accurately controlling the drive wheel 130 group through the control element, efficient underground operations can be ensured while minimizing potential accident risks.

[0045] In addition, since the design of the drive wheel 130 group can adapt to different wellbore diameters, the frequency of equipment replacement is reduced, and the problems that may occur during maintenance and repair are also reduced. At the same time, the combined design of the control element and the power element also makes maintenance more convenient, and problems can be quickly located and solved, reducing downtime and production losses.

[0046] Embodiment 2

[0047] In this embodiment, the driving wheel 130 group includes:

[0048] The reduction gear set is composed of a plurality of spur gears, the front end of which is meshed with the phase-changing gear and the rear end is meshed with the creeper wheel;

[0049] The crawler wheel is fixed in the housing through the support frame 131, and a tooth key is provided at the edge of the crawler wheel. The crawler wheel is meshed and connected with the reduction gear set through the tooth key;

[0050] The phase-changing gear is disposed between the reduction gear set and the first power assembly 120 , and the power of the first power assembly 120 is transmitted to the reduction gear set through the phase-changing gear.

[0051] Among them, the reduction gear set is used to convert the high speed of the first power component 120 into a low speed, so that the driving wheel 130 group has a greater driving force. The reduction gear set is composed of a plurality of straight teeth. It should be explained that a steering gear corresponding to the phase-changing gear is provided at the front end of the reduction gear set. The steering gear is used to change the transmission direction of the phase-changing gear again. The power direction of the first power component 120 is converted from vertical rotation to horizontal rotation through the phase-changing gear. The rear end of the reduction gear set is meshed with the crawler wheel, and the power is transmitted from the first power component 120 to the crawler wheel through the reduction gear set.

[0052] In another embodiment, the crawler wheel is used as the power of the oil horizontal well traction device 100. The crawler wheel is fixed in the shell through the support frame 131. A tooth key is provided at the edge of the crawler wheel, which can be engaged with the reduction gear set through the tooth key; the phase-changing gear is used to change the transmission direction of the power. The phase-changing gear is provided between the reduction gear set and the first power component 120. The power of the first power component 120 is transmitted to the reduction gear set through the phase-changing gear, and the power is transmitted to the crawler wheel from the reduction gear set.

[0053] By introducing the design of variable speed gears, the transmission ratio can be effectively adjusted to meet the switching between low speed and high torque and high speed and low torque, ensuring that the equipment can perform at its best under various working conditions and improve work efficiency and operation quality.

[0054] The phase-changing gear can convert the rotation of the power shaft into the steering of the crawler wheel, greatly improving the maneuverability of the machine. At the same time, a phase-changing gear and a reduction gear set are arranged between the crawler wheel and the first power component 120, which can effectively adjust the transmission ratio, realize steering control, and provide a certain buffering effect. The real-time feedback information of the gear set also helps the operator to grasp the operating status of the equipment in time, which is conducive to more precise control.

[0055] Embodiment 3

[0056] The second power group includes:

[0057] The oil pump is arranged at both ends of the housing to provide a power source for the second power group;

[0058] The telescopic rod and the telescopic cylinder are connected to the oil pump through a pipeline;

[0059] The central controller and the sensor 132 , the central controller is linearly connected to the oil pump, and the sensor 132 is linearly connected to the central controller.

[0060] In this embodiment, the second power group is used to open or close the drive wheel 130 group. The second power assembly 140 specifically includes an oil pump for providing kinetic energy. The oil pump is arranged at both ends of the shell, and the oil pump provides power to the second power group; the telescopic cylinder is used to control the extension and retraction of the drive wheel 130. When the telescopic cylinder is extended, the drive wheel 130 is pushed to open, and when the telescopic cylinder is retracted, the drive wheel 130 is pulled to retract; a central controller and a sensor 132 are also provided in the shell. The central controller is linearly connected to the oil pump, and the oil pump can be controlled by the central controller. The sensor 132 is arranged on the support frame 131, and can monitor the extension angle of the drive wheel 130 in real time. The sensor 132 is linearly connected to the central controller.

[0061] By setting up a central controller, the entire system can be uniformly managed and coordinated. By collecting data from the sensor 132, the controller can monitor the operating status of the crawler wheel in real time and make rapid responses and adjustments according to specific circumstances. This not only improves the stability and reliability of the system, but also enables it to better adapt to complex and changing environmental conditions and improve overall work efficiency.

[0062] Embodiment 4

[0063] The phase-changing gear is a helical gear.

[0064] In this embodiment, the phase-changing gear is a helical gear, which has a larger contact area and can withstand a larger load than a spur gear, so that the helical gear transmission system can transmit greater power and have a stronger load-bearing capacity under the same size.

[0065] It should be noted that, for the convenience of description, the aforementioned method embodiments are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0066] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A traction device for oil horizontal wells, It is characterized in that The traction device comprises: A housing, one end of which is fixedly connected to the connecting rod and the other end of which is connected to the drill bit; A first power assembly is disposed inside the housing and has a control element and a power element therein; A freely expandable driving wheel assembly that penetrates through the outer surface of the shell, and the driving wheel assembly is connected to the first power assembly through a transmission assembly; The driving wheels between adjacent driving wheel groups are provided with a certain angle; A second power assembly is provided at both ends of the shell, and the second power assembly is connected to the driving wheel assembly through a telescopic shaft.

2. The traction device according to claim 1, It is characterized in that The driving wheel set comprises: The reduction gear set is composed of a plurality of spur gears, the front end of which is meshed with the phase-changing gear and the rear end is meshed with the creeper wheel; The crawler wheel is fixed in the housing through a support frame, a tooth key is provided at the edge of the crawler wheel, and the crawler wheel is meshed and connected with the reduction gear set through the tooth key; The phase-changing gear is arranged between the reduction gear set and the first power assembly, and the power of the first power assembly is transmitted to the reduction gear set through the phase-changing gear.

3. The traction device according to claim 1, It is characterized in that The second power group comprises: The oil pump is arranged at both ends of the housing to provide a power source for the second power group; The telescopic rod and the telescopic cylinder are connected to the oil pump through a pipeline; The central controller and the sensor, the central controller is linearly connected to the oil pump, and the sensor is linearly connected to the central controller.

4. The traction device according to claim 2, It is characterized in that The phase-changing gear is a helical gear.

Images