CN217841579U

CN217841579U - Large-drift-diameter hanger for shaft reconstruction

Info

Publication number: CN217841579U
Application number: CN202222168027.4U
Authority: CN
Inventors: 张贺; 张建磊; 赵恒�; 吴嵌雅; 张宝龙
Original assignee: Jiutian Petroleum Technology Liaoning Co ltd
Current assignee: Jiutian Petroleum Technology Liaoning Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-11-18
Anticipated expiration: 2032-08-17

Abstract

The utility model discloses a large drift diameter hanger for shaft reconstruction, which comprises an upper joint, a releasing joint, a central pipe, an upper pressing cap, a hard rubber cylinder, a spacer ring, a soft rubber cylinder, a lower pressing cap, a shearing sleeve, an upper cylinder sleeve, a rubber cylinder piston, an upper locking spring, a slip cover standby cap, a slip cover, an upper cone, slips, a spring, a lower cone, a lower locking spring, a lower cylinder sleeve, a clamping block, a piston, a standby cap, a lower joint, a slip setting shear pin, a rubber cylinder setting shear pin and a releasing shear pin; the shearing sleeve is connected with the rubber cylinder piston through a rubber cylinder setting shear pin; the lower lock spring and the clamping block are positioned in the lower cone groove, the slip and the slip cover are sleeved on the lower cone, the piston is connected with the lower joint through the slip setting shear pin, and the lower cylinder sleeve is sleeved with the piston. Compared with the prior art, the utility model the advantage lie in: the method is convenient to construct, high in pressure bearing and low in construction cost and is used for shaft reconstruction.

Description

Large-drift-diameter hanger for shaft reconstruction

Technical Field

The utility model relates to a big latus rectum hanger structure field of pit shaft reconstruction specifically is a big latus rectum hanger for pit shaft reconstruction.

Background

Due to different geology, engineering and management conditions, the casings of oil wells, gas wells and water wells are damaged in different degrees, so that the oil wells, the gas wells and the water wells cannot be normally produced or even stop production, and the stable production of the oil fields is influenced.

At present, the main measures adopted for the casing damage well treatment are casing patching technology and small casing cementing technology.

However, the drift diameter hanger in the prior art has the following disadvantages:

(1) The casing patching technology has the problems of weak pressure bearing capacity, complex multi-well section casing damage construction and the like;

(2) The small casing well cementation has the problems that the annular space is small, the well cementation quality is difficult to ensure, the bearing pressure is low, the construction is complex, the construction cost is high and the like.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome above technical defect, provide a convenient big latus rectum hanger that is used for the pit shaft to give a new lease of life to construct, that the pressure-bearing is high and construction cost is low.

In order to solve the above problem, the technical scheme of the utility model is that: a large-drift-diameter hanger for shaft reconstruction comprises an upper joint, a releasing joint, a central pipe, an upper pressing cap, a hard rubber cylinder, a spacer ring, a soft rubber cylinder, a lower pressing cap, a shearing sleeve, an upper cylinder sleeve, a rubber cylinder piston, an upper locking spring, a slip cover spare cap, a slip cover, an upper cone, slips, a spring, a lower cone, a lower locking spring, a lower cylinder sleeve, a clamping block, a piston, a spare cap, a lower joint, a slip setting shear pin, a rubber cylinder setting shear pin and a releasing shear pin; the upper joint is connected with the releasing joint through a releasing shear pin, the upper pressing cap is in threaded connection with a rubber cylinder piston, the upper locking spring is sleeved inside a groove of the rubber cylinder piston, the hard rubber cylinder, the spacer ring, the soft rubber cylinder and the lower pressing cap are sleeved on the central tube, and the shearing sleeve is connected with the rubber cylinder piston through a rubber cylinder setting shear pin; the lower lock spring and the fixture block are positioned in the lower cone groove, the slips and the slip cover are sleeved on the lower cone, the piston is connected with the lower joint through the slip setting shear pin, and the piston is sleeved on the lower cylinder sleeve.

Furthermore, the middle ends of the hard rubber cylinder and the slips and the bottom end of the lower cone are provided with two independent setting structures.

Further, two independent setting structures are provided with locking mechanisms, and the two locking mechanisms exist independently.

Further, the hard rubber cylinder and the soft rubber cylinder are sleeved and connected with a central tube.

Further, the releasing joint and the upper pressing cap are respectively in threaded connection with two ends of the central pipe, the upper cylinder sleeve is in threaded connection with the shearing sleeve, the upper cone is in threaded connection with the central pipe through the lower cone, the slip cover spare cap is in threaded connection with the slip cover, the lower joint is in threaded connection with the central pipe, and the spare cap is in threaded connection with the lower joint.

Compared with the prior art, the utility model the advantage lie in:

(1) The central tube, the hard rubber tube and the soft rubber tube in the utility model have large drift diameters, can ensure fixed quality during construction, are convenient to use, and are efficient and reliable;

(2) The slips anchoring is reliable, the success rate is high, and the slips anchoring is not influenced by the setting condition of the rubber cylinder.

Drawings

Fig. 1 is a structural diagram of a large drift diameter hanger for reconstruction of a shaft of the present invention.

As shown in the figure: 1. the device comprises an upper joint, 2, a releasing joint, 3, a central pipe, 4, an upper pressing cap, 5, a hard rubber cylinder, 6, a spacer ring, 7, a soft rubber cylinder, 8, a lower pressing cap, 9, a shearing sleeve, 10, an upper cylinder sleeve, 11, a rubber cylinder piston, 12, an upper spring, 13, a slip cover standby cap, 14, a slip cover, 15 an upper cone, 16, a slip, 17, a spring, 18, a lower cone, 19, a lower locking spring, 20, a lower cylinder sleeve, 21 a clamping block, 22, a piston, 23, a standby cap, 24, a lower joint, 25, a slip setting shear pin, 26, a rubber cylinder setting shear pin, 27 and a releasing shear pin.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. In which like parts are designated by like reference numerals.

It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1, a large drift diameter hanger for shaft reconstruction comprises an upper joint 1, a releasing joint 2, a central pipe 3, an upper pressing cap 4, a hard rubber cylinder 5, a spacer ring 6, a soft rubber cylinder 7, a lower pressing cap 8, a shearing sleeve 9, an upper cylinder sleeve 10, a rubber cylinder piston 11, an upper locking spring 12, a slip cover spare cap 13, a slip cover 14, an upper cone 15, a slip 16, a spring 17, a lower cone 18, a lower locking spring 19, a lower cylinder sleeve 20, a clamping block 21, a piston 22, a spare cap 23, a lower joint 24, a slip setting shear pin 25, a rubber cylinder setting shear pin 26 and a releasing shear pin 27; the upper joint 1 is connected with the releasing joint 2 through a releasing shear pin 27, the upper pressure cap 8 is in threaded connection with the rubber cylinder piston 11, the upper lock spring 12 is sleeved inside a groove of the rubber cylinder piston 11, the hard rubber cylinder 5, the spacer ring 6, the soft rubber cylinder 7 and the lower pressure cap 8 are sleeved on the central pipe 3, and the shear sleeve 9 is connected with the rubber cylinder piston 11 through a rubber cylinder setting shear pin 26;

the lower lock spring 19 and the fixture block 21 are located in a groove of the lower cone 18, the slip 16 and the slip cover 17 are sleeved on the lower cone 18, the piston 22 is connected with the lower joint 24 through a slip setting shear pin 25, and the lower cylinder sleeve 20 is sleeved with the piston 22.

The middle ends of the hard rubber cylinder 5 and the slip 16 and the bottom end of the lower cone are provided with two independent setting structures, and during setting, the two independent setting structures respectively cut off respective setting shear pins to push the rubber cylinder and the slip to set. The success rate of the slip setting is improved.

As shown in fig. 1, two independent setting structures are provided with locking mechanisms, and the two locking structures independently exist, so that the segmented locking function of a rubber cylinder, a slip, an upper cone and a lower cone is realized.

As shown in figure 1, the hard rubber cylinder 5 and the soft rubber cylinder 7 are sleeved and connected with the central pipe 3, the rubber cylinder shaft is omitted from the packer, and the rubber cylinder is directly sleeved outside the central pipe, so that the radial space is saved to the maximum extent, and the requirement of a large diameter of the tool is met.

As shown in fig. 1, the releasing sub 2 and the upper pressing cap 4 are respectively at two ends of the central tube 3 in threaded connection, the upper cylinder sleeve 10 is connected with the shearing sleeve 9 in threaded connection, the upper cone 15 is connected with the central tube 3 in threaded connection with the lower cone 18, the slip cover spare cap 13 is connected with the slip cover 14 in threaded connection, the lower sub 24 is connected with the central tube 3 in threaded connection, the spare cap 23 is connected with the lower sub 24 in threaded connection, the installation can be conveniently carried out in threaded connection, the dismounting can be conveniently carried out when the part is damaged or needs to be replaced, and the use can be conveniently carried out by a user.

In specific use, after the hanger is lowered to a designed position, the oil pipe is pressed, and the slip setting shear pin 25 and the rubber barrel setting shear pin 26 are sheared along with the pressure rise;

the piston 22 moves leftwards to push the lower cone 18 and the lower lock spring 19 to move leftwards, so that the slips 16 are pushed out and anchored in the casing;

the rubber cylinder piston 11 pushes the lower pressing cap 8 and the upper spring 12 to move leftwards, and compresses the hard rubber cylinder 5 and the soft rubber cylinder 7 to finish the setting action;

when setting, the two independent setting mechanisms respectively cut off respective setting shear pins to push the rubber cylinder and the slips to set.

The present invention and its embodiments have been described above, but the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, it should be understood that those skilled in the art should also understand the scope of the present invention without inventively designing the similar structure and embodiments of the present invention without departing from the spirit of the present invention.

Claims

1. A big latus rectum hanger for pit shaft is rebuild which characterized in that: the slip setting shear comprises an upper joint (1), a releasing joint (2), a central pipe (3), an upper pressing cap (4), a hard rubber cylinder (5), a spacer ring (6), a soft rubber cylinder (7), a lower pressing cap (8), a shearing sleeve (9), an upper cylinder sleeve (10), a rubber cylinder piston (11), an upper locking spring (12), a slip cover standby cap (13), a slip cover (14), an upper cone (15), a slip (16), a spring (17), a lower cone (18), a lower locking spring (19), a lower cylinder sleeve (20), a clamping block (21), a piston (22), a standby cap (23), a lower joint (24), a slip setting shear pin (25), a rubber cylinder setting shear pin (26) and a releasing shear pin (27);

the upper joint (1) is connected with the releasing joint (2) through a releasing shear pin (27), the lower pressing cap (8) is in threaded connection with the rubber cylinder piston (11), the upper lock spring (12) is sleeved inside a groove of the rubber cylinder piston (11), the hard rubber cylinder (5), the spacer ring (6), the soft rubber cylinder (7) and the lower pressing cap (8) are sleeved on the central pipe (3), and the shearing sleeve (9) is connected with the rubber cylinder piston (11) through a rubber cylinder seat sealing shear pin (26);

the lower lock spring (19) and the fixture block (21) are located in a groove of the lower cone (18), the slip (16) and the slip cover (14) are sleeved on the lower cone (18), the piston (22) is connected with the lower joint (24) through a slip setting shear pin (25), and the lower cylinder sleeve (20) is sleeved with the piston (22).

2. The large-drift-diameter hanger for reconstruction of the wellbore of claim 1, wherein: the middle ends of the hard rubber cylinder (5) and the slips (16) and the bottom end of the lower cone are provided with two independent setting structures.

3. The large-drift-diameter hanger for reconstruction of the wellbore of claim 2, wherein: two independent setting structure is equipped with locking mechanical system, two locking mechanical system independent existence.

4. The large-drift-diameter hanger for reconstruction of the wellbore of claim 1, wherein: the hard rubber cylinder (5) and the soft rubber cylinder (7) are connected with the central tube (3) in a sleeved mode.

5. The large-drift-diameter hanger for reconstruction of the wellbore of claim 1, wherein: the release joint (2) and the upper pressure cap (4) are respectively connected with two ends of a central pipe (3) in a threaded mode, the upper cylinder sleeve (10) is connected with a shearing sleeve (9) in a threaded mode, the upper cone (15) is connected with the central pipe (3) in a threaded mode through the lower cone (18), a slip cover spare cap (13) is connected with a slip cover (14) in a threaded mode, a lower joint (24) is connected with the central pipe (3) in a threaded mode, and a spare cap (23) is connected with a lower joint (24) in a threaded mode.