Emergency bypass adapter connector
By designing emergency bypass buckle joints, the rupture disc is used to realize the drilling circulation channel bypass under the drilling fluid pressure, solving the problem of short-circuiting and no circulation paths during the drilling process, improving the card success rate and reducing costs.
Patent Information
- Application Number
- CN202420375463.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-28
AI Technical Summary
During the drilling process, the drilling tool cannot rotate or the drilling circulation channel is short-circuited, resulting in technical difficulties in the absence of circulation paths.
An emergency bypass variable buckle joint is designed. When the drilling circulation channel is short-circuited, the rupture disc is ruptured by the pressure of the drilling fluid to realize bypassing the drilling circulation channel.
It improves the success rate of drilling downhole accidents, reduces drilling costs, and has the function of conventional variable buckle joints.
Smart Images
Figure CN222478658U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil and natural gas drilling, in particular to an emergency bypass variable buckle joint. Background Art
[0002] The stratigraphic layers of Bohai Oilfield are, from top to bottom, Pingyuan Formation, Minghuazhen Formation, Guantao Formation, Dongying Formation and Shahejie Formation, etc. With the deepening of development, the bottom drilling tool combination basically tends to be consistent. At present, the 16″ borehole drill string combination of Bohai Oilfield is: 16″ drill bit + motor + float valve + stabilizer + directional well logging tool + jar + 5.5″ weighted drill pipe + variable buckle + 5.5″ drill pipe; the 12.25″ borehole drill string combination is: 12.25″ drill bit + motor + float valve + stabilizer + directional well logging tool + jar + 5.5″ weighted drill pipe + variable buckle + 5.5″ drill pipe; the 8.5″ borehole drilling tool combination is: 8.5″ drill bit + motor + float valve + stabilizer + directional well logging tool + jar + 5″ weighted drill pipe + 5″ drill pipe + variable buckle + 5.5″ drill pipe. As can be seen from the above drilling tool combination, no matter what For wells of various specifications, drill assemblies generally require variable-buckle joints, whose main function is to achieve the connection between the bottom drill assembly and the drill pipe or the connection between drill pipes of different specifications. With the development of the oil industry, the proportion of wells with complex structures is increasing year by year, and drill stuck accidents are also increasing. The specific phenomenon of drill stuck is that the drill tool cannot rotate or the drilling circulation channel is short-circuited or both occur at the same time. In view of the technical difficulties of short-circuiting the circulation channel and having no circulation path during the drilling stuck process, it is necessary to design an emergency bypass variable-buckle joint, that is, the variable-buckle joint not only has the functions of a conventional variable-buckle joint, but also can realize the bypass of the drilling circulation channel when the drilling circulation channel is short-circuited. Utility Model Content
[0003] In order to solve the technical problem of short-circuiting a circulation channel and lacking a circulation path during a drilling jam, the utility model provides an emergency bypass variable buckle joint, which improves the success rate of drilling downhole accident release and reduces drilling costs.
[0004] The utility model is realized by adopting the following technical solutions.
[0005] An emergency bypass variable buckle joint comprises a body, a plurality of through holes are formed in the middle of the side wall of the body, and rupture disks are installed in the through holes.
[0006] Furthermore, a plurality of through holes are evenly distributed on the body along the circumference.
[0007] Furthermore, the rupture disk is connected to the body via threads.
[0008] Furthermore, a through center hole is formed in the center of the body, and an anti-corrosion and anti-erosion coating is provided on the inner wall of the center hole.
[0009] Furthermore, a female buckle is formed at the upper end of the body, and the thread of the female buckle is copper-plated or phosphating-treated.
[0010] Furthermore, a male buckle is formed at the lower end of the body, and the thread of the male buckle is copper-plated or phosphating treated.
[0011] The utility model achieves the following beneficial effects.
[0012] The utility model not only has the function of a conventional variable buckle joint, but also can realize the bypass of the drilling circulation channel when the drilling circulation channel is short-circuited. In addition, the inner wall of the central hole of the utility model is coated with an anti-corrosion and anti-erosion coating (TK34), which has strong erosion resistance. The utility model has a simple structure, convenient processing, strong versatility and wide adaptability. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] Figure 2 It is a connection diagram of the utility model.
[0015] In the figure: 1. body; 11. female buckle; 12. center hole; 13. male buckle; 2. rupture disk; 3. drill pipe; 4. bottom drilling assembly. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] like Figures 1-2 As shown, an emergency bypass variable buckle joint includes a body 1 and a rupture disk 2.
[0018] A through center hole 12 is formed in the center of the body 1, and the center hole 12 is a passage for high-pressure drilling mud to flow. The present application applies an anti-corrosion and anti-erosion coating (TK34) on the inner wall of the center hole 12 to enhance its erosion resistance.
[0019] The upper end of the body 1 forms a female buckle 11, which is connected to the drill pipe; the lower end of the body 1 forms a male buckle 13, which is connected to the bottom drilling tool assembly or the drill pipe. The threads of the female buckle 11 and the male buckle 13 of the present application are API buckles, which can also be customized according to customer requirements; preferably, the threads of the female buckle 11 and the male buckle 13 are copper-plated or phosphated to prevent sticking when connecting the drill tool.
[0020] A plurality of through holes are formed in the middle of the side wall of the main body 1 of the present application, and the plurality of through holes are evenly distributed along the circumference. Preferably, four through holes are provided, and a rupture disk 2 is installed in the through hole. Specifically, the through hole is a threaded hole, and the rupture disk 2 is installed on the main body 1 by thread. The rupture disk 2 is U-shaped, and threads are formed on the outer wall surfaces of the two arms of the U-shaped rupture disk 2, and the threads correspond to the threads in the through hole in the middle of the side wall of the main body 1. The rupture value of the rupture disk 2 of the present application is determined according to the on-site drilling conditions.
[0021] When the drilling downhole situation is normal, the emergency bypass variable buckle joint of this application is used as a conventional variable buckle joint; when the drilling downhole situation occurs that the drilling circulation channel is short-circuited (such as Figure 2 As shown in the figure, by holding the pressure of the drilling fluid to make the pressure value reach the rupture pressure value set by the rupture disk, the drilling circulation channel can be bypassed, thereby solving the technical problem of short-circuiting the circulation channel and having no circulation path during the stuck drill process, improving the success rate of unblocking in downhole drilling accidents and reducing drilling costs.
[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An emergency bypass variable buckle joint, comprising a body (1), characterized in that: A plurality of through holes are formed in the middle of the side wall of the body (1), and the plurality of through holes are evenly distributed on the body (1) along the circumference. There are four through holes, and a rupture disk (2) is installed in the through hole. The rupture disk (2) is connected to the body (1) by a thread. The rupture disk (2) is U-shaped, and the outer wall surfaces of the two arms of the U-shaped rupture disk (2) form threads, which correspond to the threads in the through hole in the middle of the side wall of the body (1).
2. The emergency bypass variable buckle joint according to claim 1, characterized in that: A through center hole (12) is formed in the center of the body (1), and an anti-corrosion and anti-erosion coating is provided on the inner wall of the center hole (12).
3. The emergency bypass variable buckle joint according to claim 1, characterized in that: The upper end of the body (1) forms a female buckle (11), and the threads of the female buckle (11) are copper plated or phosphating treated.
4. The emergency bypass variable buckle joint according to claim 1, characterized in that: The lower end of the body (1) forms a male buckle (13), and the thread of the male buckle (13) is copper plated or phosphating treated.