Continuous driving friction welding non-magnetic drill rod for directional drilling
By dividing the magnetic-free drill rod into three sections and connecting it with friction welding technology, the problems of weight, inner diameter fixation and joint fastening of the magnetic-free drill rod are solved, and efficient drilling and low-cost drill rod use are achieved.
Patent Information
- Application Number
- CN202422586941.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing magnetic drill rod has a heavy and fixed inner diameter structure, and requires a deep hole boring process to expand the diameter, and the joints are easy to stick, resulting in low drilling efficiency, high cost and high safety risks.
The magnetic-free drill rod is divided into three sections by using continuous drive friction welding technology. The male and female joints are connected to the rod body, eliminating the deep hole boring process. When the joint fails, it can be cut and replaced, and sandblasted to prevent the clamping phenomenon.
It improves drilling efficiency, reduces processing costs, extends the life of the drill rod, reduces safety hazards, and avoids unnecessary economic losses.
Smart Images
Figure CN223177486U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of non-magnetic drill pipes, in particular to a non-magnetic drill pipe for directional drilling with continuous drive friction welding. Background Technique
[0002] With the increasing attention of society to coal mining efficiency and safety, the demand for directional drilling technology is also continuously increasing. People have realized key operations such as gas drainage and geological exploration in coal mines by using directional drilling rigs and inclinometers, improving the accuracy and safety of operations. As the carrier of the inclinometer, the non-magnetic drill pipe not only plays a physical protection role but also avoids the interference of external magnetic fields, ensuring the measurement accuracy. Therefore, the preparation process of the non-magnetic drill pipe is particularly important.
[0003] Currently, the commonly used non-magnetic drill pipes are generally of an integral structure, with male and female threads processed at both ends for connection with other drill tools. Such non-magnetic drill pipes are usually heavy, with a fixed inner diameter and limited space. Often, deep hole boring technology is required to expand its inner diameter, reduce weight, improve transportation efficiency, and cooperate with the installation of the measurement system. Moreover, the non-magnetic drill pipes often have thread sticking problems at the joints. Once the joints fail and are damaged, only the whole pipe can be replaced, which not only reduces the drilling efficiency but also increases the use cost.
[0004] Therefore, it is necessary to provide a non-magnetic drill pipe for directional drilling with continuous drive friction welding to solve the above technical problems. Content of the Utility Model
[0005] The utility model provides a non-magnetic drill pipe for directional drilling with continuous drive friction welding. Currently, the commonly used non-magnetic drill pipes are generally of an integral structure, with male and female threads processed at both ends for connection with other drill tools. Such non-magnetic drill pipes are usually heavy, with a fixed inner diameter and limited space. Often, deep hole boring technology is required to expand its inner diameter, reduce weight, improve transportation efficiency, and cooperate with the installation of the measurement system. Moreover, the non-magnetic drill pipes often have thread sticking problems at the joints. Once the joints fail and are damaged, only the whole pipe can be replaced, which not only reduces the drilling efficiency but also increases the use cost.
[0006] To solve the above technical problems, a non-magnetic drill pipe for directional drilling with continuous drive friction welding provided by the utility model includes: a male joint, a rod body, and a female joint;
[0007] The rod body is arranged on one side of the male joint, the female joint is arranged on the other side of the rod body, a thread layer is provided on one side of the outer surface of the male joint, and a thread groove is provided on one side of the inner surface of the female joint.
[0008] Preferably, the male joint, the rod body, and the female joint are connected by continuous drive friction welding technology.
[0009] Compared with the related technologies, the non-magnetic drill pipe for directional drilling with continuous drive friction welding provided by the present utility model has the following beneficial effects:
[0010] The present utility model provides a non-magnetic drill pipe for directional drilling with continuous drive friction welding. The non-magnetic drill pipe is divided into three sections. The male and female joints are connected to the rod body by using the continuous drive friction welding technology, eliminating the deep hole boring process. Once the joint fails, it can be cut off and replaced. The male and female joints are separately sandblasted to prevent the male and female joints from sticking, improving the drilling efficiency. The large-diameter rod body is directly connected to the fixed joint, thus saving the processing cost, extending the service life of the drill pipe, effectively solving the problems encountered in the processing and use of the integral non-magnetic drill pipe, reducing the processing cost of the enterprise, improving the anti-sticking performance of the drill pipe joint, at the same time improving the drilling efficiency of the drill pipe, reducing the safety hazards brought by the failure of the drill pipe during drilling, and avoiding unnecessary economic losses. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic structural diagram of a non-magnetic drill pipe for directional drilling with continuous drive friction welding provided by the present utility model.
[0012] Reference numerals in the figure: 1, male joint; 2, rod body; 3, female joint; 4, thread groove; 5, thread layer. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0014] Please refer to Figure 1 , which is a schematic structural diagram of a non-magnetic drill pipe for directional drilling with continuous drive friction welding provided by the present utility model. A non-magnetic drill pipe for directional drilling with continuous drive friction welding includes: a male joint 1, a rod body 2, and a female joint 3;
[0015] The rod body 2 is arranged on one side of the male joint 1, the female joint 3 is arranged on the other side of the rod body 2, a thread layer 5 is arranged on one side of the outer surface of the male joint 1, and a thread groove 4 is arranged on one side of the inner surface of the female joint 3.
[0016] The male joint 1, the rod body 2, and the female joint 3 are connected by friction welding.
[0017] The non-magnetic drill pipe is divided into three sections. The male and female joints are connected to the rod body by using the continuous drive friction welding technology, eliminating the deep hole boring process. Once the joint fails, it can be cut off and replaced, and the male and female joints are separately sandblasted to prevent the male and female joints from sticking, improving the drilling efficiency, reducing safety hazards, and avoiding economic losses.
[0018] The male and female connectors need to be processed with diameter variation to connect with rod bodies of different inner diameters.
[0019] The working principle of a non-magnetic drill pipe for directional drilling with continuous drive friction welding provided by the present utility model is as follows:
[0020] During operation, first, thread processing and diameter variation processing are respectively carried out on both ends of the male and female connectors of the three-section non-magnetic drill pipe. Then, sandblasting treatment is performed on the internal and external threads. The anti-galling performance of the treated threads is significantly improved. For the weld surfaces to be welded at the diameter-varied ends of the male and female connectors of the non-magnetic drill pipe and the weld surfaces at both ends of the rod body, a angle grinder is used for grinding to clean the burrs and oil stains on the weld surfaces. A continuous drive friction welding machine is used to weld the female connector to one end of the rod body and the male connector to the other end of the rod body.
[0021] Medium-frequency induction heating is used for local heat treatment of the weld seam of the non-magnetic drill pipe. Through solution treatment and aging treatment, the microstructure of the weld seam and the heat-affected zone is transformed, the grains are refined, the internal stress is eliminated, and the mechanical properties of the weld seam are improved.
[0022] Compared with the related technology, a non-magnetic drill pipe for directional drilling with continuous drive friction welding provided by the present utility model has the following beneficial effects:
[0023] The present utility model provides a non-magnetic drill pipe for directional drilling with continuous drive friction welding. By dividing the non-magnetic drill pipe into three sections and using friction welding to connect the male and female connectors with the rod body, the deep hole boring process is omitted. Once the connector fails, it can be cut off and replaced. The male and female connectors are separately sandblasted to prevent galling of the male and female connectors, improve the drilling efficiency, and extend the service life of the drill pipe. The three-section non-magnetic drill pipe adopts continuous drive friction welding technology and separately sandblasts the connectors, effectively solving the problems encountered in the processing and use of the integral non-magnetic drill pipe, reducing the processing cost of the enterprise, improving the anti-galling performance of the drill pipe connectors, at the same time improving the drilling efficiency of the drill pipe, reducing the safety hazards brought by drill pipe failure during drilling, and avoiding unnecessary economic losses.
[0024] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present utility model.
Claims
1. A non-magnetic drill pipe for directional drilling in continuous drive friction welding, characterized in that, Including: Male connector, rod body and female connector; The rod body is arranged on one side of the male connector, the female connector is arranged on the other side of the rod body, a threaded layer is arranged on one side of the outer surface of the male connector, and a threaded groove is arranged on one side of the inner surface of the female connector.
2. The non-magnetic drill pipe for directional drilling by continuous drive friction welding according to claim 1, wherein, The male connector, rod body and female connector are connected by continuous drive friction welding technology.