CN219412491U - Circulation joint and top drive device - Google Patents

Abstract

The utility model provides a circulation joint and a top drive device, wherein the circulation joint comprises a driving piece, a main body pipe, a main shaft pipe and an anchor head which are sequentially connected, wherein: the anchor head is provided with a leather cup which is used for being matched with the inner wall of the anchor head sealing sleeve; the main body tube is used for being connected to a top drive shaft; the main shaft tube is adjustably equipped with a clamping member, and the driving member acts on the clamping member to enable the clamping member to move axially along the main shaft tube while at least part of the clamping member can move radially outwards along the main shaft tube to abut against the inner wall of the sleeve. The utility model can be conveniently connected and assembled with the top drive device and the sleeve, can assist the sleeve to unblock, and is beneficial to improving the operation efficiency of the sleeve lowering.

Description

Circulation joint and top drive device

Technical Field

The utility model relates to the technical field of oil drilling equipment, in particular to a circulating joint and a top drive device.

Background

Under the working conditions of a horizontal well, a large displacement well and the like, the phenomenon of blockage often occurs due to the limitation of well conditions in the casing running process. In the prior art, a pump circulation starting mode is often adopted to solve the blockage so as to enable the sleeve to be smoothly put down. During operation, the top drive shaft or the circulating pipeline is connected with the casing through the circulating joint to circulate drilling fluid so as to clean the shaft, thereby achieving the purpose of removing the casing blockage. The conventional circulating joint is connected with the sleeve through threads, so that complicated operations such as hoisting, buckling, screwing up the sleeve threads and the like are required to be performed on the circulating joint in the operation process, and the operation efficiency is affected.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a circulating joint which is convenient to connect and assemble with a top drive device and a sleeve, can assist the sleeve to unblock and is beneficial to improving the operation efficiency of the sleeve lowering.

Another object of the present utility model is to provide a top drive apparatus that enables casing running and fast cycle establishment for unblocking when casing running encounters a blockage.

The embodiment of the utility model is realized by the following technical scheme:

a circulation joint, comprising: the main part pipe, main shaft pipe and the anchor head that driving piece and connect gradually, wherein: the anchor head is provided with a leather cup which is used for being matched with the inner wall of the anchor head sealing sleeve; the main body tube is used for being connected to a top drive shaft; the main shaft tube is adjustably equipped with a clamping member, and the driving member acts on the clamping member to enable the clamping member to move axially along the main shaft tube while at least part of the clamping member can move radially outwards along the main shaft tube to abut against the inner wall of the sleeve.

According to a preferred embodiment, the main shaft tube comprises a fixed section, a guide section and a deformation section which are sequentially connected, wherein the fixed section is connected to the main shaft tube, the deformation section is connected to the anchor head, a guide inclined surface is arranged on the deformation section, and the guide inclined surface is obliquely arranged from the guide section to the anchor head along the radial direction of the main shaft tube; the clamping piece is in sliding fit with the guide inclined plane.

According to a preferred embodiment, the deformation section is provided with a guide groove, and the guide inclined plane is arranged on the bottom surface of the guide groove; the clamping piece is embedded in the guide groove.

According to a preferred embodiment, the clip comprises: a mounting portion adjustably mounted to the guide section; a working part which is in sliding fit with the guide inclined plane; and a deformation part having one end connected to the mounting part and the other end connected to the working part, wherein in a radial direction of the main shaft pipe, a thickness of the deformation part is smaller than that of the mounting part, and a thickness of the deformation part is smaller than that of the deformation part.

According to a preferred embodiment, the guide section is sleeved with a connecting sleeve, and the connecting sleeve can slide along the axial direction of the guide section; the mounting portion is connected to the connection sleeve.

According to a preferred embodiment, the driving member comprises a piston sleeve which is sleeved on the guide section; the end face of the main body pipe, which faces the guide section, is provided with a hydraulic cavity which is communicated with the inner cavity of the main body pipe, and the fixed section penetrates through the hydraulic cavity to be connected to the inner cavity of the main body pipe; one end of the piston sleeve acts on the clamping piece, and the other end of the piston sleeve is embedded in the hydraulic cavity in a sliding manner; the end face of the main body pipe, which faces the guide section, is provided with a sealing cover for sealing the hydraulic cavity, and the sealing cover is sleeved outside the piston sleeve.

According to a preferred embodiment, the piston sleeve comprises a drive part and an extension part connected to each other, the drive part having an outer diameter which is larger than the outer diameter of the extension part, the extension part being connected to the clamping member through the sealing cover.

According to a preferred embodiment, the main body pipe is provided with two driving holes communicated into the hydraulic cavity, and the liquid inlet ends of the two driving holes are connected with a pressure oil source; the driving part is positioned between the outlet ends of the two driving holes; the outlet ends of the two driving holes are positioned on the inner wall of the hydraulic cavity.

According to a preferred embodiment, the main body pipe is provided with a limiting shoulder, and the limiting shoulder is arranged on one side close to the anchor head; the driving hole is arranged on one side close to the anchor head and is positioned on the limiting shoulder.

The top drive device comprises a top drive shaft and the circulating joint; the main body pipe is detachably and coaxially connected to the top drive shaft.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

according to the utility model, the main body pipe is connected to the top drive shaft, so that the circulating connector can be assembled on the top drive device, and can be quickly inserted into the sleeve through the top drive shaft to establish circulation to unclamp after the sleeve is lowered and meets resistance; the clamping piece is used for moving outwards along the radial direction of the main shaft tube to abut against the inner wall of the sleeve when the circulating joint is positioned in the sleeve under the action of the driving piece, so that the circulating joint and the sleeve are assembled in a quick sealing way by matching with the anchor head and the leather cup, the assembly efficiency is high, and the operation efficiency of the sleeve in-place can be improved; meanwhile, through the assembly structure of the clamping piece, the circulating connector can be matched with sleeves of different specifications, the application range is wide, and further, the circulating connector can be assembled on the top drive shaft in the whole process of the sleeve descending without frequent disassembly, so that the working efficiency is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a circulation joint according to an embodiment of the present utility model;

FIG. 2 is a schematic top view of a circulation joint according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of section A-A of FIG. 2;

FIG. 4 is a schematic diagram of an exploded view of a circulation joint according to an embodiment of the present utility model;

fig. 5 is a schematic perspective view of a main shaft tube according to an embodiment of the present utility model;

fig. 6 is a schematic top view of a main shaft pipe according to an embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view of section B-B of FIG. 6.

Icon: 100. a main body tube; 101. a limit shoulder; 102. a drive hole; 200. a main shaft tube; 201. a fixed section; 202. a guide section; 203. a deformation section; 2031. a guide groove; 2032. a guide slope; 2033. sinking surface; 2034. constructing an inclined plane; 300. a piston sleeve; 301. a driving section; 302. an extension; 400. sealing cover; 500. connecting sleeves; 501. a fixing ring; 502. a first clamping groove; 503. a second clamping groove; 600. a clamping piece; 601. a mounting part; 602. a deformation section; 603. a working section; 700. a leather cup; 710. a bowl seat; 800. an anchor head; 801. an extension shaft; 802. and a shoulder.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 7, a circulation joint includes a driving member, and a main body pipe 100, a main shaft pipe 200, and an anchor head 800 sequentially connected, wherein: the anchor head 800 is provided with a leather cup 700 for sealing the inner wall of the sleeve by matching with the anchor head 800; the main body tube 100 is for connection to a top drive shaft; the main shaft tube 200 is adjustably equipped with a grip 600, and a driving member acts on the grip 600 to move the grip 600 axially along the main shaft tube 200 while the grip 600 is at least partially movable radially outwardly of the main shaft tube 200. In this embodiment, the main body pipe 100 is connected to the top drive shaft, so that the circulation connector can be assembled on the top drive device, and after the casing is lowered and blocked, the circulation connector can be quickly inserted into the casing through the top drive shaft to establish circulation for releasing the blockage; the clamping piece 600 is used for moving outwards along the radial direction of the main shaft tube 200 to abut against the inner wall of the sleeve when the circulating joint is positioned in the sleeve under the action of the driving piece, so that the circulating joint and the sleeve are assembled in a quick sealing way by matching the anchor head 800 and the leather cup 700, the assembly efficiency is high, and the operation efficiency of the sleeve in-place can be improved; meanwhile, through the assembly structure of the clamping piece 600, the circulating connector can be made to adapt to sleeves of different specifications, the application range is wide, and further, the circulating connector can be assembled on the top drive shaft in the whole process of sleeve insertion without frequent disassembly, so that the working efficiency is further improved.

The main shaft tube 200 comprises a fixed section 201, a guide section 202 and a deformation section 203 which are sequentially connected, wherein the fixed section 201 is connected to the main shaft tube 100, the deformation section 203 is connected to the anchor head 800, a guide inclined surface 2032 is arranged on the deformation section 203, and the guide inclined surface 2032 is obliquely arranged from the guide section 202 to the anchor head 800 along the radial direction of the main shaft tube 200; clip 600 is slidably engaged to guide ramp 2032. As shown in fig. 4 and 5, the fixing section 201, the guiding section 202 and the deformation section 203 are integrally formed, and when the clamping member 600 moves along the axial direction of the main shaft tube 200 towards the anchor head 800, the guiding inclined surface 2032 enables the clamping member 600 to move radially outwards of the deformation section 203, namely, the main shaft tube 200, so as to form a structure that the clamping member 600 expands radially outwards of the main shaft tube 200, and the diameter of the whole circulation joint can be increased by matching the clamping member 600 with the guiding inclined surface 2032 when the circulation joint is positioned in the sleeve, so that the clamping and fixing of the circulation joint in the sleeve can be realized.

In this embodiment, a plurality of clamping members 600 are uniformly arranged on the circumference side of the deformation section 203 so as to increase the firmness of the assembly of the circulation joint in the sleeve. Accordingly, the plurality of guide slopes 2032 are provided in one-to-one correspondence with the plurality of chucking members 600.

Further, a guiding groove 2031 is formed on the deformation section 203, and a guiding inclined plane 2032 is disposed on the bottom surface of the guiding groove 2031; the clip 600 is fitted into the guide groove 2031. The guide groove 2031 is used for guiding the chucking member 600 at a limit so that it can move smoothly in the axial direction of the main shaft tube 200.

As shown in fig. 3 and 4, the chucking member 600 includes an integrally formed mounting portion 601, a deformation portion 602, and a working portion 603, wherein the mounting portion 601 is adjustably fitted to the guide section 202; the working portion 603 is slidably attached to the guide slope 2032; one end of the deformation portion 602 is connected to the mounting portion 601, the other end is connected to the working portion 603, the thickness of the deformation portion 602 is smaller than the thickness of the mounting portion 601 in the radial direction of the main shaft tube 200, and the thickness of the deformation portion 602 is smaller than the thickness of the deformation portion 602. The thickness of the deformation portion 602 is minimized compared to the thickness of the mounting portion 601 and the working portion 603, and during use, the working portion 603 moves radially outwardly relative to the deformation portion 602 along the main shaft tube 200 under the action of the guide inclined surface 2032, so that the deformation portion 602 is elastically deformed to adapt to the working requirements of the fastener 600.

In this embodiment, as shown in fig. 6 and 7, the bottom surface of the guiding groove 2031 further includes a sinking surface 2033 and a construction inclined surface 2034 sequentially connected to the guiding inclined surface 2032, one end of the sinking surface 2033 is connected to the construction inclined surface 2034, and the other end is connected to the guiding inclined surface 2032, and the sinking surface 2033 is lower than the construction inclined surface 2034 and the guiding inclined surface 2032 so as to receive the clamping member 600 when the clamping member 600 is separated from the inner wall of the sleeve, so as to avoid interference with the sleeve.

As shown in fig. 1, 3 and 4, the guide section 202 is sleeved with a connecting sleeve 500, and the connecting sleeve 500 can slide along the axial direction of the guide section 202; the mounting portion 601 is connected to the connection sleeve 500. In this embodiment, the connecting sleeve 500 includes two half sleeves, and the two half sleeves are disposed outside the main shaft tube 200 and are connected by bolts to form the connecting sleeve 500. The inner side surface of the half sleeve is provided with a first clamping groove 502 for clamping the mounting part 601. When in use, the clamping member 600 is first embedded in the guiding groove 2031, and then the two half ferrules are arranged outside the clamping member 600, it should be noted that, in the process, at least part of the structure of the mounting portion 601 is embedded in the first clamping groove 502, so that the connecting sleeve 500 can limit the clamping member 600 in the axial direction of the main shaft tube 200. It should be noted that the connecting sleeve 500 is located within the guide section 202 and is slidably connected to the guide section 202.

As shown in fig. 3, the driving member includes a piston sleeve 300 sleeved on the guide section 202; the end surface of the main body pipe 100 facing the guide section 202 is provided with a hydraulic cavity which is communicated with the inner cavity of the main body pipe 100, and the fixed section 201 passes through the hydraulic cavity to be connected to the inner cavity of the main body pipe 100; one end of the piston sleeve 300 acts on the clamping piece 600, and the other end is embedded in the hydraulic cavity in a sliding manner; the end surface of the main body pipe 100 facing the guide section 202 is provided with a sealing cover 400 for sealing the hydraulic chamber, and the sealing cover 400 is sleeved outside the piston sleeve 300. In this embodiment, the fixing section 201 is screwed with the inner cavity of the main body tube 100, and the outer wall of the guide section 202, the inner wall of the hydraulic chamber and the inner wall sealing the same together define a sealed chamber such that the hydraulic chamber constitutes a sealed chamber after the piston sleeve 300 is assembled. Further, the piston housing 300 includes a driving part 301 and an extension part 302 connected to each other, the driving part 301 having an outer diameter larger than that of the extension part 302, and the extension part 302 being connected to the clip 600 through the sealing cap 400. Specifically, sealing rings are disposed on both inner and outer side surfaces of the driving portion 301, respectively, for sealing a gap between the driving portion 301 and the guide section 202 and a gap between the driving portion 301 and an inner wall of the hydraulic chamber, and accordingly, a gap between the sealing cover 400 and the extension portion 302 is also sealed by the sealing rings. In use, the clamp 600 is acted upon by the hydraulic drive 301 via the extension 302 to cause axial movement of the clamp 600 in the spindle tube 200.

In this embodiment, the connecting sleeve 500, that is, the inner side surfaces of the two half sleeves are provided with a second clamping groove 503, the second clamping groove 503 is embedded with a fixing ring 501, and the extension portion 302 is in threaded connection with the fixing ring 501. The second clamping groove 503 is disposed near one end of the main body pipe 100, and the first clamping groove 502 is disposed near one end of the anchor head 800. In use, the fixing ring 501 is first assembled on the extension portion 302, then the clamping member 600 is assembled in the guiding groove 2031, and finally the two half ferrules are fixed outside the main shaft tube 200, so that the fixing ring 501 is clamped in the second clamping groove 503, and the mounting portion 601 is clamped in the first clamping groove 502.

As shown in fig. 1 and 3, in this embodiment, a main body pipe 100 is provided with two driving holes 102 connected to a hydraulic chamber, and liquid inlet ends of the two driving holes 102 are connected to a pressure oil source; the driving part 301 is located between the outlet ends of the two driving holes 102; the outlet ends of both drive holes 102 are located on the inner wall of the hydraulic chamber. Further, a limiting shoulder 101 is arranged on the main body pipe 100, and the limiting shoulder 101 is arranged at one side close to the anchor head 800; a drive hole 102 is provided on the side near anchor head 800 on limit shoulder 101. The limiting shoulder 101 here serves to limit the depth to which the present circulation joint is embedded within the casing. In use, after the circulation joint is inserted into the casing, the upper end of the casing collar abuts against the lower end face of the limit shoulder 101.

As shown in fig. 3, in this embodiment, an extension shaft 801 is provided on an upper end surface of the anchor head 800, and a shoulder 802 is provided on the extension shaft 801. The extension shaft 801 passes through the cup 700 and the cup 700 abuts against the shoulder 802. The extension shaft 801 is provided with a bowl 710, and the cup 700 is positioned between the bowl 710 and the shoulder 802. The extension shaft 801 is screwed to the deformation section 203, and the bowl 710 is abutted against the lower end of the deformation section 203, so that the bowl 710 presses the cup 700 to the stop shoulder 802.

The embodiment also provides a top drive device (not shown in the figure), which comprises a top drive shaft and the circulating joint; the main body tube 100 is detachably coaxially connected to the top drive shaft. In the embodiment, the circulating connector can be always assembled on the top drive shaft when in use, and when the blockage occurs in the process of casing pipe lowering, the circulating connector is directly embedded into the casing pipe through the top drive shaft to establish circulating unblocking; after the casing pipe resistance removing operation is completed, the circulating joint is lifted out of the casing pipe through the top drive shaft. The device is convenient to use, can immediately establish circulation for the sleeve with the blocking so as to solve the blocking, and is beneficial to improving the operation efficiency. In this embodiment, the upper end of the main body pipe 100 is coaxial with the top drive shaft and is screwed to the top drive shaft.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. The utility model provides a circulation joint which characterized in that includes driving piece and main part pipe (100), main shaft pipe (200) and anchor head (800) that connect gradually, wherein:

the anchor head (800) is provided with a leather cup (700) for being matched with the anchor head (800) to seal the inner wall of the sleeve;

the main body tube (100) is used for being connected to a top drive shaft;

the main shaft pipe (200) is adjustably provided with a clamping piece (600), and the driving piece acts on the clamping piece (600) so that the clamping piece (600) can move outwards along the radial direction of the main shaft pipe (200) to be abutted against the inner wall of the sleeve at least partially when the clamping piece (600) moves along the axial direction of the main shaft pipe (200).

2. The circulation joint according to claim 1, wherein the main shaft tube (200) comprises a fixed section (201), a guiding section (202) and a deforming section (203) connected in sequence, wherein,

the fixed section (201) is connected to the main body pipe (100), the deformation section (203) is connected to the anchor head (800), a guide inclined surface (2032) is arranged on the deformation section (203), and the guide inclined surface (2032) is obliquely arranged outwards from the guide section (202) towards the anchor head (800) along the radial direction of the main body pipe (200);

the clip (600) is slidably engaged to the guide ramp (2032).

3. The circulation joint according to claim 2, wherein the deformation section (203) is provided with a guide groove (2031), and the guide inclined surface (2032) is arranged on the bottom surface of the guide groove (2031);

the clamping piece (600) is embedded in the guide groove (2031).

4. The circulation joint of claim 2, wherein the clip (600) comprises:

a mounting portion (601) adjustably fitted to the guide section (202);

a working section (603) which is slidably attached to the guide slope (2032); and

a deformation portion (602) having one end connected to the mounting portion (601) and the other end connected to the working portion (603), wherein,

in the radial direction of the main shaft tube (200), the thickness of the deformation part (602) is smaller than the thickness of the mounting part (601), and the thickness of the deformation part (602) is smaller than the thickness of the deformation part (602).

5. The circulation joint according to claim 4, characterized in that the guide section (202) is sleeved with a connecting sleeve (500), the connecting sleeve (500) being slidable in the axial direction of the guide section (202);

the mounting portion (601) is connected to the connecting sleeve (500).

6. The circulation joint of claim 2, wherein the drive member comprises a piston sleeve (300) sleeved on the guide section (202);

the end face of the main body pipe (100) facing the guide section (202) is provided with a hydraulic cavity, the hydraulic cavity is communicated with the inner cavity of the main body pipe (100), and the fixed section (201) penetrates through the hydraulic cavity to be connected to the inner cavity of the main body pipe (100);

one end of the piston sleeve (300) acts on the clamping piece (600), and the other end is embedded in the hydraulic cavity in a sliding way;

the end face of the main body pipe (100) facing the guide section (202) is provided with a sealing cover (400) for sealing the hydraulic cavity, and the sealing cover (400) is sleeved outside the piston sleeve (300).

7. The circulation joint according to claim 6, wherein the piston sleeve (300) comprises a driving portion (301) and an extension portion (302) connected to each other, the driving portion (301) having an outer diameter larger than an outer diameter of the extension portion (302), the extension portion (302) being connected to the clamping member (600) through the sealing cover (400).

8. The circulation joint according to claim 7, wherein the main body pipe (100) is provided with two driving holes (102) communicated into the hydraulic cavity, and liquid inlet ends of the two driving holes (102) are connected with a pressure oil source;

the driving part (301) is positioned between the outlet ends of the two driving holes (102);

the outlet ends of the two driving holes (102) are positioned on the inner wall of the hydraulic cavity.

9. The circulation joint according to claim 8, characterized in that a limit shoulder (101) is provided on the main body pipe (100), the limit shoulder (101) being provided on the side close to the anchor head (800);

the driving hole (102) is arranged on one side close to the anchor head (800) and is positioned on the limit shoulder (101).

10. A top drive apparatus comprising a top drive shaft and a circulation joint as claimed in any one of claims 1 to 9;

the main body tube (100) is detachably and coaxially connected to the top drive shaft.