Wellhead torque real-time online detection device
By setting up a torque detection structure and a wireless signal transmission system on the wellhead drill pipe, the technical difficulty of real-time torque detection at the wellhead is solved, the safety and reliability of the drill pipe connection are improved, and a torque history record is provided.
Patent Information
- Application Number
- CN202422592012.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing technology lacks dedicated torque measurement tools and cannot detect the torque during wellhead oil connection in real time, resulting in insufficient or excessive torque, affecting the firmness and safety of the drill pipe connection.
A real-time online detection device for wellhead torque is designed. A torque detection structure, including an elastic shaft and a strain gauge, is set on the drill pipe. Wireless signal transmission is performed using a signal acquisition and transmission module and a receiving module to detect torque in real time and store data.
It realizes real-time detection and recording of wellhead torque, improves the safety and reliability of drill pipe connection, provides historical tracking reference, and timely detects potential problems.
Smart Images
Figure CN223389313U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of torque detection, in particular to a real-time online detection device for wellhead torque. Background Art
[0002] Oilfield drill pipe refers to specific equipment used in the process of oilfield development, mainly used in drilling, completion and production. Drill pipe is usually used to support the wellhead structure to ensure its stability. During the drilling process, the drill pipe can transmit power and torque to assist the drill bit in operation. The torque when the drill pipe is connected not only affects the tightness of the drill pipe connection, but also directly affects the safe use of the drill pipe and the safety of oilfield operations. When the drill pipe is connected, it needs to be tightened according to a certain torque to ensure the firmness and safety of the connection. In actual operation, the torque will be adjusted according to factors such as the specific model, material and use environment of the drill pipe.
[0003] When connecting drill pipe, there is currently no dedicated torque measurement tool to detect torque in real time during wellhead oil connection. This cannot avoid problems caused by insufficient or excessive torque. Therefore, a system is proposed that can meet the requirements of real-time torque detection during drill pipe connection and record the torque value. This helps track the use history of the drill pipe, provides reference when problems arise, and promptly identifies potential problems. Utility Model Content
[0004] Based on the technical problem that there is no dedicated torque measurement tool to perform real-time detection of torque during wellhead oil connection, the utility model proposes a real-time online detection device for wellhead torque.
[0005] The utility model proposes a real-time online detection device for wellhead torque, including a drill pipe, one end of which is provided with a torque detection structure, the torque detection structure including an elastic shaft, the outer surface of which is bonded with a strain gauge, one end of which is electrically connected to a signal acquisition and transmission module, the signal acquisition and transmission module transmits the collected signal to a signal receiving module in a wireless manner, and the signal receiving module then wirelessly transmits the received signal to a data acquisition module for storage.
[0006] The rotation of the drill rod generates torque that causes the elastic shaft and the strain gauge to produce slight deformations. The signal acquisition and transmission module processes the weak voltage signal output by the strain bridge and then transmits it.
[0007] Preferably, the torque detection structure further includes a torque detection sub, the inner wall of the torque detection sub is threadedly connected to the outer surface of the elastic shaft, and the outer surface of the torque detection sub is threadedly connected to the inner wall of the drill rod.
[0008] Through the above technical solution, the elastic shaft is threadedly connected to the torque detection short section, so that the elastic shaft can effectively transmit the torque from the drill pipe to the torque detection short section. The torque detection short section is threadedly connected to the drill pipe, so that the torque detection short section will be driven to rotate when the drill pipe rotates.
[0009] Preferably, a protective shell is fixedly mounted on the outer surface of the elastic shaft, the strain gauge is arranged between the elastic shaft and the protective shell, and the outer surface of the protective shell is slidably plugged into the inner wall of the torque detection short section.
[0010] Through the above technical solution, a protective shell is installed on the elastic shaft to prevent dust and dirt from entering the torque detection short section when the drill pipe rotates. The strain gauge is arranged between the elastic shaft and the protective shell, which can also prevent humid air from directly contacting the strain gauge, thereby affecting the performance and life of the strain gauge.
[0011] Preferably, the outer surface of the signal acquisition and transmission module is electrically connected to a lithium battery.
[0012] According to the above technical solution, the signal acquisition and transmission module is electrically connected to a lithium battery, thereby powering the signal acquisition and transmission module.
[0013] Preferably, the model of the signal acquisition and transmission module is CC2530.
[0014] Through the above technical solution, by installing the signal acquisition and transmission module, the rotation of the drill rod causes a slight deformation of the elastic shaft and the strain gauge, and the signal acquisition and transmission module then processes the output weak voltage signal and transmits it to the signal receiving module.
[0015] The beneficial effects of the present invention are:
[0016] By setting a signal acquisition and transmission module at one end of the elastic shaft, the rotation of the drill pipe will cause slight deformation of the elastic shaft and the strain gauge. The weak voltage signal output by the strain bridge is processed by the signal acquisition and transmission module to achieve the effect of collecting and transmitting signals, and then transmitted wirelessly to the signal receiving module. The signal receiving module then transmits the signal to the data acquisition module to detect the torque in real time, solving the technical problem of the existing lack of dedicated torque measurement tools for real-time detection of torque during wellhead oil connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of a real-time online detection device for wellhead torque proposed by the present invention;
[0018] Figure 2 This is a three-dimensional diagram of the protective shell structure of a real-time online detection device for wellhead torque proposed by the present invention;
[0019] Figure 3This is a three-dimensional diagram of the strain gauge structure of a real-time online detection device for wellhead torque proposed by the utility model.
[0020] In the figure: 1. Drill rod; 2. Elastic shaft; 21. Strain gauge; 22. Torque detection short section; 23. Protective shell; 24. Lithium battery; 3. Signal acquisition and transmission module; 4. Signal receiving module; 5. Data acquisition module. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0022] Reference Figure 1-Figure 3 A real-time online detection device for wellhead torque includes a drill pipe 1. A torque detection structure is provided at one end of the drill pipe 1. The torque detection structure includes an elastic shaft 2. A strain gauge 21 is bonded to the outer surface of the elastic shaft 2. One end of the strain gauge 21 is electrically connected to a signal acquisition and transmission module 3. The signal acquisition and transmission module 3 transmits the collected signal to the signal receiving module 4 wirelessly. The signal receiving module 4 then wirelessly transmits the received signal to the data acquisition module 5 for storage.
[0023] In order to transmit torque, the torque detection structure also includes a torque detection sub 22. The inner wall of the torque detection sub 22 is threadedly connected to the outer surface of the elastic shaft 2. The outer surface of the torque detection sub 22 is threadedly connected to the inner wall of the drill rod 1. By threading the elastic shaft 2 on the torque detection sub 22, the elastic shaft 2 can effectively transmit the torque from the drill rod 1 to the torque detection sub 22. The torque detection sub 22 is threadedly connected to the drill rod 1, so that the torque detection sub 22 is driven to rotate while the drill rod 1 rotates.
[0024] In order to protect the strain gauge 21 from being affected, a protective shell 23 is fixedly installed on the outer surface of the elastic shaft 2. The strain gauge 21 is arranged between the elastic shaft 2 and the protective shell 23. The outer surface of the protective shell 23 is slidably plugged into the inner wall of the torque detection short section 22. By installing the protective shell 23 on the elastic shaft 2, dust and dirt are prevented from entering the torque detection short section 22 when the drill rod 1 rotates. The strain gauge 21 is arranged between the elastic shaft 2 and the protective shell 23, which can also prevent humid air from directly contacting the strain gauge 21, thereby affecting the performance and life of the strain gauge 21.
[0025] In order for the signal acquisition and transmission module 3 to collect and transmit signals, the rotation of the drill rod 1 will generate torque to cause the elastic shaft 2 and the strain gauge 21 to produce slight deformation. The signal acquisition and transmission module 3 will process the weak voltage signal output by the strain bridge and then transmit it.
[0026] In order to operate the signal acquisition and transmission module 3 , a lithium battery 24 is electrically connected to the outer surface of the signal acquisition and transmission module 3 . By electrically connecting the lithium battery 24 to the signal acquisition and transmission module 3 , the signal acquisition and transmission module 3 is powered.
[0027] In order for the signal acquisition and transmission module 3 to collect and transmit signals at the same time, the model of the signal acquisition and transmission module 3 is CC2530. When the rotation of the drill rod 1 generates torque, the elastic shaft 2 and the strain gauge 21 will produce a slight deformation and then output a weak voltage signal through the strain bridge. The weak voltage signal can be processed by the signal acquisition and transmission module 3 to achieve the effect of collecting and transmitting signals.
[0028] By arranging the signal acquisition and transmission module 3 at one end of the elastic shaft 2, the rotation of the drill pipe 1 will cause slight deformation of the elastic shaft 2 and the strain gauge 21. The weak voltage signal output by the strain bridge is processed by the signal acquisition and transmission module 3 to achieve the effect of collecting and transmitting signals, and then transmitted to the signal receiving module 4 wirelessly. The signal receiving module 4 then transmits the signal to the data acquisition module 5 to store the torque in real time, solving the technical problem of the existing lack of dedicated torque measurement tools for real-time detection of torque during wellhead oil connection.
[0029] Working principle: The rotation of the drill pipe 1 generates torque, which causes the elastic shaft 2 and the strain gauge 21 in the torque detection short section 22 to produce slight deformation under the influence of the torque. Therefore, the weak voltage signal output by the strain bridge is processed by the signal acquisition and transmission module 3 to achieve the effect of signal acquisition and transmission. The processed signal is then transmitted wirelessly to the signal receiving module 4, and the data is then collected and stored in the data acquisition module 5. No connection between the instrument and the computer is required, and remote detection can be achieved.
[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A real-time online detection device for wellhead torque, comprising a drill pipe (1), characterized in that: A torque detection structure is provided at one end of the drill rod (1), the torque detection structure comprising an elastic shaft (2), a strain gauge (21) being bonded to the outer surface of the elastic shaft (2), one end of the strain gauge (21) being electrically connected to a signal acquisition and transmission module (3), the signal acquisition and transmission module (3) transmitting the collected signal to a signal receiving module (4) in a wireless manner, and the signal receiving module (4) then wirelessly transmitting the data to a data acquisition module (5) for storage; The rotation of the drill rod (1) generates torque, causing the elastic shaft (2) and the strain gauge (21) to produce slight deformations, and the signal acquisition and transmission module (3) processes the weak voltage signal output by the strain bridge and then transmits it.
2. The real-time online detection device for wellhead torque according to claim 1, characterized in that: The torque detection structure further comprises a torque detection short section (22), the inner wall of the torque detection short section (22) being threadedly connected to the outer surface of the elastic shaft (2), and the outer surface of the torque detection short section (22) being threadedly connected to the inner wall of the drill rod (1).
3. The real-time online detection device for wellhead torque according to claim 2, characterized in that: A protective shell (23) is fixedly mounted on the outer surface of the elastic shaft (2), the strain gauge (21) is arranged between the elastic shaft (2) and the protective shell (23), and the outer surface of the protective shell (23) is slidably plugged into the inner wall of the torque detection short section (22).
4. The real-time online detection device for wellhead torque according to claim 1, characterized in that: The outer surface of the signal acquisition and transmission module (3) is electrically connected to a lithium battery (24).
5. The real-time online detection device for wellhead torque according to claim 1, characterized in that: The model of the signal acquisition and transmission module (3) is CC2530.