Bending-resistant double-seal visible repair drill rod joint
By introducing structures such as bending-resistant sealing grooves, trapezoidal sealing grooves and sealing protrusions into the drill pipe joints, combined with visual repair of the shoulders, the problem of insufficient bending and sealing properties of traditional drill pipe joints is solved, and the drill pipe joints are improved overall performance and ability to adapt to complex drilling environments.
Patent Information
- Application Number
- CN202420889451.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Traditional drill pipe joints have insufficient bending resistance, sealing and repairability in complex geological environments, and are prone to deformation or breakage due to bending stress, and poor sealing properties lead to drilling fluid penetration, affecting drilling efficiency and joint life.
A flexural double seal visual repair drill pipe joint was designed, using a combination structure of anti-flexural sealing groove and sealing ring, trapezoidal sealing groove and sealing ring, sealing protrusion and sealing concave filling, combining arc and triangular threaded tooth structure , increases bending resistance and sealing performance, and visual repair by repairing shoulders.
It improves the bending strength and sealing performance of drill pipe joints, enhances the adaptability to complex drilling environments, reduces drilling costs, and improves drilling efficiency and overall performance of joints.
Smart Images
Figure CN222276610U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drill pipe joints, in particular to a bending-resistant double-sealed visible repairable drill pipe joint. Background Art
[0002] In the fields of oil, gas and geological drilling, drill pipe joints are an indispensable key component of drilling equipment. They are responsible for connecting the drill pipes and ensuring that the drill pipes can perform drilling operations stably and continuously in complex geological environments.
[0003] With the advancement of drilling technology and the increasing complexity of drilling environment, the performance requirements for drill pipe joints are becoming higher and higher; especially when the wellbore is severely dog-legged and the drilling fluid pressure is high, the drill pipe joints face huge challenges.
[0004] Although traditional drill pipe joints can meet basic drilling needs to a certain extent, they still have many shortcomings in terms of bending resistance, sealing and repairability. Under the action of bending stress, drill pipe joints are prone to deformation or breakage, resulting in interruption of drilling operations; at the same time, due to poor sealing, drilling fluid can easily penetrate into the meshing threads, which not only affects drilling efficiency, but may also cause corrosion and damage to the drill pipe joints. Utility Model Content
[0005] The utility model aims to provide a bending-resistant double-sealed visible repair drill pipe joint, which has the characteristics of increasing the bending-resistant performance and the sealing performance.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bend-resistant double-seal visual repair drill pipe joint, comprising a male joint and a female joint connected to the male joint, the male joint being inserted into the female joint, the male joint having a first repair shoulder for repair on the side close to the female joint, the female joint having a second repair shoulder for repair on the side close to the male joint, an anti-bending sealing groove being provided on the side close to the female joint, an anti-bending sealing ring being provided at one end of the female joint for matching with the anti-bending sealing groove for anti-bending, a male joint thread tooth being fixedly installed on the outer side of the male joint, and a female joint thread tooth being fixedly installed on the inner side of the female joint.
[0007] In order to facilitate stable connection, as a preferred bending-resistant double-seal visual repair drill pipe joint of the utility model, the thread tooth tops and thread tooth bottoms of the male joint thread teeth and the female joint thread teeth are arc-shaped, and the thread shapes of the male joint thread teeth and the female joint thread teeth are both triangular structures.
[0008] In order to improve the bending resistance, as a preferred bending-resistant double-seal visual repair drill pipe joint of the utility model, a trapezoidal sealing groove is provided on the side of the male joint close to the female joint, and one end of the female joint has a trapezoidal sealing ring for adapting and sealing with the trapezoidal sealing groove.
[0009] In order to protect the pipe body, as a preferred anti-bending double-seal visual repair drill pipe joint of the utility model, the outer diameters of the male joint and the female joint are larger than the outer diameter of the drill pipe body, and the male joint and the drill pipe body are transitioned through a conical surface, and the female joint and the drill pipe body are transitioned through a conical surface.
[0010] In order to increase the sealing performance, as a preferred anti-bending double-sealed visual repair drill pipe joint of the utility model, a sealing protrusion is fixedly installed at one end of the male joint, and a sealing concave filling for matching and sealing with the sealing protrusion is opened on one side of the female joint.
[0011] In order to improve drilling efficiency, as a preferred embodiment of the utility model, a bending-resistant double-sealed visual repair drill pipe joint is provided, a sealing recess is fixedly installed at one end of the male joint, and a sealing protrusion is provided on one side of the female joint for adapting and sealing with the sealing recess.
[0012] In order to enhance the sealing performance, as a preferred embodiment of the anti-bending double-seal visual repair drill pipe joint of the utility model, the sealing protrusion and the sealing concave filling are spirally matched, and the sealing concave block and the sealing convex head are threadedly matched.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] Through the anti-bending settings of the anti-bending sealing groove and the anti-bending sealing ring, and the sealing settings of the sealing protrusion and the sealing concave filling, the anti-bending performance and the sealing are enhanced, thereby improving the drilling efficiency; through the setting of the anti-bending sealing groove and the anti-bending sealing ring, in conjunction with the setting of the trapezoidal sealing groove and the trapezoidal sealing ring, the bending strength and sealing performance of the joint are improved, thereby improving the performance of the drill pipe joint, meeting the needs of complex drilling environments, and providing new technical support and guarantee for the development of oil, natural gas and geological drilling; through the first repair shoulder set on the male joint and the second repair shoulder set on the female joint, the visual repair of the drill pipe joint is realized, reducing the drilling cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a three-dimensional structural diagram of the utility model;
[0016] Figure 2 It is a partial cross-sectional structural diagram of the utility model;
[0017] Figure 3 This is a front view cross-sectional view of the utility model;
[0018] Figure 4 For this utility model Figure 2 The structure diagram at A is enlarged;
[0019] Figure 5 For this utility model Figure 2 Enlarged structural diagram at point B in the middle.
[0020] In the figure: 1. male joint; 101. trapezoidal sealing groove; 102. anti-bending sealing groove; 103. male joint thread; 104. sealing protrusion; 105. sealing concave block; 2. female joint; 201. trapezoidal sealing ring; 202. anti-bending sealing ring; 203. female joint thread; 204. sealing concave filling; 205. sealing protrusion; 3. first repair shoulder; 4. second repair shoulder. DETAILED DESCRIPTION
[0021] See also Figures 1 to 5 A bending-resistant double-seal visual repair drill pipe joint comprises a male joint 1 and a female joint 2 connected to the male joint 1, the male joint 1 is inserted into the female joint 2, the male joint 1 has a first repair shoulder 3 for repair on the side close to the female joint 2, the female joint 2 has a second repair shoulder 4 for repair on the side close to the male joint 1, an anti-bending sealing groove 102 is provided on the side close to the female joint 2, an anti-bending sealing ring 202 is provided at one end of the female joint 2 for matching with the anti-bending sealing groove 102 for anti-bending, a male joint thread 103 is fixedly installed on the outer side of the male joint 1, and a female joint thread 203 is fixedly installed on the inner side of the female joint 2.
[0022] In this embodiment: the male connector 1 has a first repair shoulder 3 for repair on the side close to the female connector 2, and the female connector 2 has a second repair shoulder 4 for repair on the side close to the male connector 1, so that the first repair shoulder 3 and the second repair shoulder 4 can be used to facilitate the visual repair of the drill pipe joint.
[0023] As a technical optimization solution of the utility model, the thread tops and thread bottoms of the male joint thread teeth 103 and the female joint thread teeth 203 are arc-shaped, and the thread shapes of the male joint thread teeth 103 and the female joint thread teeth 203 are both triangular structures.
[0024] In this embodiment, the arrangement of the male connector thread teeth 103 and the female connector thread teeth 203 facilitates the installation of the male connector 1 in the female connector 2, and the threaded installation of the male connector 1 and the female connector 2 is stable.
[0025] As a technical optimization solution of the utility model, a trapezoidal sealing groove 101 is provided on one side of the male connector 1 close to the female connector 2 , and a trapezoidal sealing ring 201 is provided at one end of the female connector 2 for sealing with the trapezoidal sealing groove 101 .
[0026] In this embodiment, by providing the trapezoidal sealing groove 101 and the trapezoidal sealing ring 201 , the bending resistance can be improved, thereby improving the performance of the drill pipe joint and meeting the requirements of a complex drilling environment.
[0027] As a technical optimization solution of the utility model, the outer diameters of the male joint 1 and the female joint 2 are larger than the outer diameter of the drill pipe body, and the male joint 1 and the drill pipe body are transitioned through a conical surface, and the female joint 2 and the drill pipe body are transitioned through a conical surface.
[0028] In this embodiment, the male connector 1 and the drill pipe body are transitioned through a conical surface, and the female connector 2 and the drill pipe body are transitioned through a conical surface, which is convenient for protecting the drill pipe body.
[0029] As a technical optimization solution of the utility model, a sealing protrusion 104 is fixedly installed at one end of the male connector 1, and a sealing concave filling 204 for matching and sealing with the sealing protrusion 104 is opened on one side of the female connector 2.
[0030] In this embodiment: a sealing recess 204 for sealing with the sealing protrusion 104 is opened on one side of the female connector 2, which is convenient for sealing the connection between the male connector 1 and the female connector 2 to avoid the infiltration of drilling fluid and better protect the male connector thread teeth 103 and the female connector thread teeth 203.
[0031] As a technical optimization solution of the utility model, a sealing block 105 is fixedly installed at one end of the male connector 1, and a sealing protrusion 205 is provided on one side of the female connector 2 for matching and sealing with the sealing block 105; the sealing protrusion 104 and the sealing concave filling 204 are spirally matched, and the sealing concave block 105 and the sealing protrusion 205 are threadedly matched.
[0032] In this embodiment, the sealing arrangement of the sealing protrusion 104 and the sealing concave filling 204 can enhance the sealing performance, protect the drill pipe joint, improve the drilling efficiency, and provide new technical support and guarantee for the development of oil, natural gas and geological drilling.
[0033] Working principle: First, under the action of preload, the male connector 1 and the female connector 2 are connected together through the male connector thread teeth 103 and the female connector thread teeth 203, so that the first repair shoulder 3 is in close contact with the second repair shoulder 4, and the sealing performance of the joint is improved by the adaptive sealing setting of the trapezoidal sealing groove 101 and the trapezoidal sealing ring 201, the adaptive sealing of the sealing protrusion 104 and the sealing concave filling 204, and the adaptive contact sealing setting of the sealing concave block 105 and the sealing protrusion 205, thereby improving the performance of the drill pipe joint and meeting the needs of complex drilling environments. By docking and adapting the anti-bending sealing groove 102 and the anti-bending sealing ring 202, the bending moment load on the engaged male connector thread teeth 103 and the female connector thread teeth 203 is shared, thereby improving the bending resistance of the joint.
[0034] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of various parts adopt the conventional means such as mature rivets and welding in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. All electrical equipment in the utility model are powered by an external power supply.
[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A bending-resistant double-sealed visual repair drill pipe joint, comprising a male joint (1), and a female joint (2) connected to the male joint (1), wherein the male joint (1) is inserted into the female joint (2), and is characterized in that: The male connector (1) has a first repair shoulder (3) for repair on the side close to the female connector (2), and the female connector (2) has a second repair shoulder (4) for repair on the side close to the male connector (1). The male connector (1) has an anti-bending sealing groove (102) on the side close to the female connector (2). One end of the female connector (2) has an anti-bending sealing ring (202) for matching with the anti-bending sealing groove (102) for anti-bending. The male connector (1) has a male connector thread (103) fixedly installed on the outer side, and the female connector (2) has a female connector thread (203) fixedly installed on the inner side.
2. The bending-resistant double-seal visual repair drill pipe joint according to claim 1, characterized in that: The thread tops and thread bottoms of the male joint thread teeth (103) and the female joint thread teeth (203) are in arc shape, and the thread shapes of the male joint thread teeth (103) and the female joint thread teeth (203) are both triangular structures.
3. The bending-resistant double-seal visual repair drill pipe joint according to claim 1, characterized in that: A trapezoidal sealing groove (101) is provided on one side of the male joint (1) close to the female joint (2), and one end of the female joint (2) has a trapezoidal sealing ring (201) for matching and sealing with the trapezoidal sealing groove (101).
4. The bending-resistant double-seal visual repair drill pipe joint according to claim 1, characterized in that: The outer diameters of the male joint (1) and the female joint (2) are larger than the outer diameter of the drill pipe body; a conical surface is used to transition between the male joint (1) and the drill pipe body; and a conical surface is used to transition between the female joint (2) and the drill pipe body.
5. The bending-resistant double-seal visual repair drill pipe joint according to claim 1, characterized in that: A sealing protrusion (104) is fixedly mounted on one end of the male connector (1), and a sealing recess (204) for matching and sealing with the sealing protrusion (104) is provided on one side of the female connector (2).
6. The bending-resistant double-seal visual repair drill pipe joint according to claim 5, characterized in that: A sealing recess (105) is fixedly mounted on one end of the male connector (1), and a sealing protrusion (205) is provided on one side of the female connector (2) for matching and sealing with the sealing recess (105).
7. The bending-resistant double-seal visual repair drill pipe joint according to claim 6, characterized in that: The sealing protrusion (104) and the sealing concave filling (204) are screw-matched, and the sealing concave block (105) and the sealing convex head (205) are thread-matched.