A universal shaft housing with adjustable angle at wellhead

Abstract

The utility model provides a universal shaft housing with adjustable angle at the wellhead, and the purpose is to solve the technical problem that the adjustment section of the adjustable angle universal shaft housing is easy to get stuck when in use. The universal shaft housing includes: a stator joint, the interior of which is a circular space; a double male joint, one end of which is located in the stator joint; an adjustment section, one end of which is rotatably connected to one end of the stator joint, and the adjustment section is sleeved in the middle of the double male joint; an adjustment joint, one end of which is rotatably connected to the other end of the adjustment section, and the adjustment joint is sleeved on the other end of the double male joint; a drive ring, which is arc-shaped, and the drive ring is located between the inner wall of the adjustment section and the outer wall of the double male joint, and the thickness of one end of the drive ring is smaller than the thickness of the other end; wherein the outer diameter of the double male joint is smaller than the inner diameter of the adjustment joint. Angle adjustment is achieved by squeezing the double male joint by the inconsistent thickness at both ends of the drive ring, which has the advantage of a smooth adjustment process.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to a universal shaft housing with an adjustable angle at a wellhead. Background Art

[0002] The screw drill is an important drilling tool for correcting deviation or creating inclination during the drilling process of oil exploration and development. It realizes the azimuth angle of the drilling design by sliding its own bending mechanism during the drilling process. According to its structural form, it can be divided into two forms: fixed angle and wellhead adjustable angle. Its structural form is realized through the external shell of the universal shaft assembly.

[0003] However, when the adjustable angle universal shaft housing in the prior art is in use, the adjustment joint is prone to get stuck, which is mainly caused by the overly rigid driving structure between the adjustment joint and the double male joint. Utility Model Content

[0004] Aiming at the technical problem that the adjustment joint of the above-mentioned adjustable angle universal shaft housing is prone to get stuck when in use, the utility model provides a universal shaft housing with an adjustable angle at a wellhead, which has the advantage of smooth adjustment.

[0005] The technical solution of the utility model is:

[0006] A universal shaft housing with adjustable wellhead angle, comprising:

[0007] A stator joint, the interior of which is a circumferential space;

[0008] a double male connector, one end of which is located in the stator connector;

[0009] An adjustment joint, one end of which is rotatably connected to one end of the stator joint, and the adjustment joint is sleeved on the middle part of the double male joint;

[0010] An adjusting joint, one end of which is rotatably connected to the other end of the adjusting section, and the adjusting joint is sleeved on the other end of the double male joint;

[0011] A driving ring, which is arc-shaped, is located between the inner wall of the adjustment section and the outer wall of the double male joint, and the thickness of one end of the driving ring is less than the thickness of the other end thereof;

[0012] Wherein, the outer diameter of the double male joint is smaller than the inner diameter of the adjustment joint.

[0013] Optionally, the inner diameter of the double male connector is smaller than the inner diameter of the stator connector;

[0014] An arc-shaped guide groove is respectively provided on both sides of the stator joint, and a guide column is respectively provided on both sides of the double male joint, and the two guide columns are respectively slidably matched in the two guide grooves.

[0015] Optionally, the middle portion of the double male connector has an annular positioning ring, and the outer periphery of the positioning ring is in sliding contact with the inner wall of the adjustment section.

[0016] Optionally, the cross-section of the positioning ring is U-shaped, and one side of the positioning ring that is arc-shaped contacts the inner wall of the adjustment section.

[0017] Optionally, a limiting groove is further provided in the middle of the outer side of the double male connector, a ball is movably provided in the limiting groove, and the ball contacts the inner wall of the driving ring;

[0018] When the axis of the adjustment section is colinear with the axis of the double male joint, the ball contacts the middle of the drive ring.

[0019] Optionally, two limiting grooves are symmetrically arranged on the double male joint, and a ball is movably arranged in each of the two limiting grooves;

[0020] The central angle of the driving ring is less than 180°, and the inner wall of the adjustment section is provided with two driving rings in a mirror-symmetrical manner, and the two balls are in contact with the two driving rings respectively.

[0021] Optionally, the two limiting grooves and the two guide pillars are respectively located in four mutually perpendicular directions of the double male connector.

[0022] Optionally, the outer wall of the adjustment section and the outer wall of the adjustment joint are both provided with scales.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] First, the two ends of the adjustment joint are rotatably connected to the stator joint and the adjustment joint, and then the double male joint is arranged inside the stator joint, the adjustment joint and the adjustment joint. Through the driving ring arranged inside the adjustment joint, the double male joint is driven to swing perpendicular to its axis inside the adjustment joint, thereby realizing the angle adjustment of the double male joint.

[0025] In the technical solution, the angle adjustment is achieved by squeezing the double male connectors through the inconsistent thickness at both ends of the driving ring, which has the advantage of a smooth adjustment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the cross section of AA;

[0029] Figure 3 for Figure 1 Schematic diagram of the cross section of BB. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0036] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings. Example

[0037] See also Figure 1-Figure 3 A universal shaft housing with an adjustable wellhead angle comprises a stator joint 1, a double male joint 2, an adjustment joint 3, an adjustment joint 4 and a drive ring 5. Specifically, the stator joint 1, the double male joint 2, the adjustment joint 3 and the adjustment joint 4 are all rotatable structures, and the interiors of the four parts are all circular hollow structures.

[0038] Among them, one end of the stator joint 1 is rotatably connected to one end of the adjustment section 3, and the other end of the adjustment section 3 is rotatably connected to one end of the adjustment joint 4. In addition, one end of the double male joint 2 is located inside the stator joint 1, the middle part of the double male joint 2 is located inside the adjustment section 3, and the other end of the double male joint 2 is located inside the adjustment joint 4.

[0039] In addition, there are gaps between the outer wall of the double male joint 2 and the inner wall of the stator joint 1 , the inner wall of the adjustment joint 3 , and the inner wall of the adjustment joint 4 .

[0040] The driving ring 5 is located inside the adjusting section 3, and between the adjusting section 3 and the double male connector 2. The driving ring 5 is an arc-shaped structure, and the thickness of one end of the driving ring 5 is smaller than the thickness of the other end. When the axis of the double male connector 2 coincides with the axis of the adjusting section 3, the outer surface of the double male connector 2 contacts the middle of the driving ring 5.

[0041] In this embodiment, firstly, the two ends of the adjustment section 3 are rotatably connected to the stator joint 1 and the adjustment joint 4, and then the double male joint 2 is arranged inside the stator joint 1, the adjustment section 3 and the adjustment joint 4. By means of the driving ring 5 arranged inside the adjustment section 3, the double male joint 2 is driven to swing perpendicularly to its axis inside the adjustment section 3, thereby realizing the angle adjustment of the double male joint 2.

[0042] In the present technical solution, the angle adjustment is achieved by squeezing the double male connector 2 through the inconsistent thickness at both ends of the driving ring 5, which has the advantage of a smooth adjustment process.

[0043] In one specific embodiment:

[0044] The inner diameter of the double male connector 2 is smaller than that of the stator connector 1 . An arc-shaped guide groove 6 is provided on both sides of the stator connector 1 . A guide column 7 is provided on both sides of the double male connector 2 . The two guide columns 7 are slidably fitted in the two guide grooves 6 .

[0045] Preferably, the length direction of the guide post 7 is perpendicular to the axis of the double male connector 2, and the length directions of the two guide posts 7 are in the same straight line. In addition, the ends of the two guide posts 7 away from the double male connector 2 are both hemispherical structures, and the ends of the guide posts 7 with hemispherical structures are in sliding contact with the inner wall of the guide groove 6.

[0046] In this embodiment, by providing two guide grooves 6 and providing a guide post 7 on both sides of the double male connector 2, the movement direction of the double male connector 2 can be limited so that it can only deflect but not rotate. In addition, the hemispherical structure of the end of the guide post 7 is conducive to the sliding of the end of the guide post 7 in the guide groove 6.

[0047] In another specific embodiment:

[0048] The middle of the double male connector 2 has an annular positioning ring 8, and the outer periphery of the positioning ring 8 is in sliding contact with the inner wall of the adjustment section 3. Preferably, the cross section of the positioning ring 8 is U-shaped, and the arc-shaped side of the positioning ring 8 is in contact with the inner wall of the adjustment section 3.

[0049] In this embodiment, by providing a positioning ring 8, the deflected axis of the double male connector 2 is fixed at the positioning ring 8, thereby facilitating the determination of the curvature and radius of the guide groove 6.

[0050] In another specific embodiment:

[0051] A limiting groove is also provided in the middle of the outer side of the double male joint 2, in which a ball 9 is movably provided, and the ball 9 contacts the inner wall of the driving ring 5. When the axis of the adjusting section 3 is colinear with the axis of the double male joint 2, the ball 9 contacts the middle of the driving ring 5.

[0052] Preferably, the driving ring 5 is arc-shaped, and the central angle of the driving ring 5 is less than 180°. Two limit grooves are symmetrically arranged on the double male connector 2, and a ball 9 is movably arranged in each of the two limit grooves. At the same time, two driving rings 5 ​​are mirror-symmetrically arranged in the adjustment section 3, and the two driving rings 5 ​​are in contact with the two balls 9 respectively.

[0053] In this embodiment, by providing the ball bearings 9, when adjusting the angle of the double male joint 2, the sliding friction between the drive ring 5 and the double male joint 2 can be changed to rolling friction, thereby reducing the force required when rotating the adjustment section 3. In addition, by symmetrically providing two ball bearings 9 and two drive rings 5, the double male joint 2 can be clamped between the two drive rings 5, and the thickness difference at both ends of the drive ring 5 can be used to achieve stable adjustment of the deflection angle of the double male joint 2.

[0054] Generally, the thickness of the driving ring 5 increases or decreases linearly from one end to the other end.

[0055] In addition, in order to ensure that the two driving rings 5 ​​can smoothly drive the double male connector 2 to rotate after the guide pillars 7 and the guide grooves 6 are set, the two limit grooves and the two guide pillars 7 are respectively located in four mutually perpendicular directions of the double male connector 2.

[0056] In another specific embodiment:

[0057] The outer wall of the adjustment section 3 and the outer wall of the adjustment joint 4 are both provided with scales, and the scales are universally set, and when the adjustment section 3 is rotated, the deflection angle of the double male joint 2 can be easily understood.

[0058] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A universal shaft housing with adjustable wellhead angle, characterized in that: include: A stator joint, the interior of which is a circumferential space; a double male connector, one end of which is located in the stator connector; An adjustment joint, one end of which is rotatably connected to one end of the stator joint, and the adjustment joint is sleeved on the middle part of the double male joint; An adjusting joint, one end of which is rotatably connected to the other end of the adjusting section, and the adjusting joint is sleeved on the other end of the double male joint; A driving ring, which is arc-shaped, is located between the inner wall of the adjustment section and the outer wall of the double male joint, and the thickness of one end of the driving ring is less than the thickness of the other end thereof; Wherein, the outer diameter of the double male joint is smaller than the inner diameter of the adjustment joint.

2. The universal shaft housing with adjustable wellhead angle according to claim 1, characterized in that: The inner diameter of the double male connector is smaller than the inner diameter of the stator connector; An arc-shaped guide groove is respectively provided on both sides of the stator joint, and a guide column is respectively provided on both sides of the double male joint, and the two guide columns are respectively slidably matched in the two guide grooves.

3. The universal shaft housing with adjustable wellhead angle according to claim 2, characterized in that: The middle part of the double male joint is provided with an annular positioning ring, and the outer periphery of the positioning ring is in sliding contact with the inner wall of the adjustment section.

4. The universal shaft housing with adjustable wellhead angle according to claim 3, characterized in that: The cross section of the positioning ring is U-shaped, and one side of the positioning ring that is arc-shaped contacts the inner wall of the adjustment section.

5. The universal shaft housing with adjustable wellhead angle according to claim 4, characterized in that: A limiting groove is also provided in the middle of the outer side of the double male joint, a ball is movably provided in the limiting groove, and the ball contacts the inner wall of the driving ring; When the axis of the adjustment section is colinear with the axis of the double male joint, the ball contacts the middle of the drive ring.

6. The universal shaft housing with adjustable wellhead angle according to claim 5, characterized in that: The double male joint is symmetrically provided with two limiting grooves, and a ball is movably arranged in each of the two limiting grooves; The central angle of the driving ring is less than 180°, and the inner wall of the adjustment section is provided with two driving rings in a mirror-symmetrical manner, and the two balls are in contact with the two driving rings respectively.

7. The universal shaft housing with adjustable wellhead angle according to claim 6, characterized in that: The two limiting grooves and the two guide pillars are respectively located in four mutually perpendicular directions of the double male connector.

8. The universal shaft housing with adjustable wellhead angle according to claim 7, characterized in that: The outer wall of the adjustment section and the outer wall of the adjustment joint are both provided with scales.

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