CN212272084U

CN212272084U - Direct-push type gate slip replacing device

Info

Publication number: CN212272084U
Application number: CN202020210698.0U
Authority: CN
Inventors: 刘崇; 雷明; 李涛; 韩耀明; 董明; 张绮伦; 首云波; 郭许燕; 张婷婷; 郭然; 吴鹏; 尹金伟; 王勃皓; 于万琦; 孙小杰; 吴超
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2021-01-01
Anticipated expiration: 2030-02-26

Abstract

The utility model discloses a device is changed to straight pushing-type gate slips, include outer sleeve (1) of establishing from the extroversion in proper order to the cover, plug (2) and long connecting rod (3), the one end of outer sleeve (1) is equipped with clamp bulge loop (11) outward, be equipped with annular step (14) in the one end of outer sleeve (1), be connected with seal assembly between plug (2) and annular step (14), long connecting rod (3) contain the long rod body (31) and annular inflatable rubber pad (36), plug (2) and cut off pipe (4) all with long rod body (31) transition fit, be equipped with axial gas injection pore (34) in long rod body (31), inflatable rubber pad (36) are located the outside of clamp bulge loop (11), when to axial gas injection pore (34) interior gas injection, the external diameter of inflatable rubber pad (36) can the grow. The direct-push type gate slip replacing device can replace the gate slips under the low-pressure condition that a well and a pipeline are not stopped.

Description

Direct-push type gate slip replacing device

Technical Field

The utility model relates to an oil development equipment field, specific is a device is changed to straight pushing-type gate slips.

Background

The gate for the oil field is various, has multiple models such as 250, 350, and the wide application is on oil recovery, heat is annotated and oil field admission, gathering and transportation pipeline, nevertheless because long-time operation is in high-pressure saline and alkaline environment, gate and fixed slips can appear the flashboard and close not tightly or slips and lose the phenomenon, bring the difficulty for on-the-spot production management, cause environmental pollution hidden danger. If the gate slips are maintained and replaced, the well and the pipeline need to be stopped, and the normal production of the oil well is influenced.

SUMMERY OF THE UTILITY MODEL

In order to change the gate slips under the circumstances of not stopping the well, stopping the pipeline, the utility model provides a device is changed to straight pushing-type gate slips, this device is changed to straight pushing-type gate slips can be under the low pressure circumstances of not stopping the well, stopping the pipeline change gate slips.

The utility model provides a technical scheme that its technical problem adopted is: a direct-push type gate slip replacing device comprises an outer sleeve, a plug and a long connecting rod which are sequentially sleeved from outside to inside, wherein a clamp convex ring is arranged outside one end of the outer sleeve, an annular step is arranged inside one end of the outer sleeve, the plug is positioned inside the other end of the outer sleeve, a sealing assembly is connected between the plug and the annular step and sleeved between the outer sleeve and the long connecting rod, the sealing assembly comprises a blocking pipe, a fixed ring sheet and an annular rubber pad, the fixed ring sheet is sleeved outside two ends of the blocking pipe, the rubber pad is positioned between the fixed ring sheet and the blocking pipe, the long connecting rod comprises a long rod body and an annular inflatable rubber pad, the plug is in threaded connection with the outer sleeve, the plug and the blocking pipe are in transition fit with the long rod body, an axial gas injection pore passage is arranged in the long rod body, the inflatable rubber pad is sleeved outside one end of the long rod body and positioned outside the clamp convex ring, the long connecting rod can move along the axial direction, when gas is injected into the axial gas injection pore channel, the outer diameter of the gas-filled rubber pad can be enlarged.

The axis of the outer sleeve, the axis of the plug, the axis of the long rod body, the axis of the partition pipe, the axis of the fixed ring piece and the axis of the rubber cushion are superposed.

The outer joint is arranged on the side wall of the outer sleeve and is positioned between the annular step and the clamp convex ring.

Two external connectors which are symmetrical up and down are arranged on the side wall of the outer sleeve, and the two external connectors are respectively connected with a pressure gauge and an emptying valve.

The long rod body is of a cylindrical structure with one end closed and the other end open, an end cap is sleeved outside the other end of the long rod body, a gas injection external interface is arranged on the end cap, and gas can be injected into the axial gas injection pore channel through the gas injection external interface.

The end cap is a cylindrical structure with one end closed and the other end open, the open end of the long rod body is in threaded connection with the open end of the end cap, and the gas injection external interface is connected with the closed end of the end cap.

The outer fixed cover of one end of the long rod body is provided with an annular baffle, the outer peripheral surface of the annular baffle is provided with an annular groove, the inflatable rubber pad is sleeved in the annular groove of the annular baffle in a matching manner, and the inflatable rubber pad is connected with the annular baffle in a sealing manner.

A radial outer through hole for communicating the annular groove with the axial gas injection pore passage is arranged in the annular baffle plate, and when the inflatable rubber pad is in an expansion state, the outer diameter of the inflatable rubber pad is larger than that of the annular baffle plate; when the inflatable rubber pad is in a natural state, the outer diameter of the inflatable rubber pad is smaller than or equal to that of the annular baffle.

The partition pipe and the fixed ring piece are in clearance fit with the outer sleeve, the fixed ring piece is in threaded connection with the partition pipe, the inner diameter of the rubber pad is the same as that of the fixed ring piece, and the outer diameter of the rubber pad is the same as that of the fixed ring piece.

The utility model has the advantages that:

1. is convenient to carry.

2. The assembly is quick.

3. Without stopping the well.

4. The gate slips can be replaced.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic view of an outer sleeve.

Fig. 2 is a schematic view of a plug.

Fig. 3 is a schematic view of a long link.

Fig. 4 is a schematic view of a seal assembly.

Fig. 5 is a schematic view of a direct-push type gate slip replacing apparatus.

Fig. 6 is a schematic view showing a state in which the straight-push type gate slip replacing apparatus is used.

1. An outer sleeve; 2. plugging with a thread; 3. a long connecting rod; 4. separating the pipe; 5. a fixed ring sheet; 6. a rubber pad; 7. a gate;

11. a hoop convex ring; 12. an outer joint; 13. an internal thread section; 14. an annular step; 15. a large diameter section; 16. a small diameter section;

31. a long rod body; 32. an end cap; 33. an air injection external interface; 34. an axial gas injection duct; 35. an annular baffle; 36. an inflatable rubber pad.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A straight push type gate slip replacing device comprises an outer sleeve 1, a plug 2 and a long connecting rod 3 which are sleeved in sequence from outside to inside, wherein a hoop convex ring 11 is arranged outside one end of the outer sleeve 1, an annular step 14 is arranged inside one end of the outer sleeve 1, the plug 2 is positioned inside the other end of the outer sleeve 1, a sealing assembly is connected between the plug 2 and the annular step 14 and sleeved between the outer sleeve 1 and the long connecting rod 3, the sealing assembly comprises a blocking pipe 4, a fixed ring piece 5 and an annular rubber cushion 6, the fixed ring piece 5 and the rubber cushion 6 are both sleeved outside two ends of the blocking pipe 4, the rubber cushion 6 is positioned between the fixed ring piece 5 and the blocking pipe 4, the long connecting rod 3 comprises a long rod body 31 and an annular inflatable rubber cushion 36, the plug 2 is in threaded connection with the outer sleeve 1, the plug 2 and the blocking pipe 4 are both in transition fit with the long rod body 31, an axial hole 34 is arranged in the long rod body 31, the inflatable rubber pad 36 is sleeved outside one end of the long rod body 31, the inflatable rubber pad 36 is located outside the clamping convex ring 11, the long connecting rod 3 can move along the axial direction of the long rod body 31, and when gas is injected into the axial gas injection pore canal 34, the outer diameter of the inflatable rubber pad 36 can be enlarged, as shown in fig. 1 to 5.

In the embodiment, the axis of the outer sleeve 1, the axis of the plug 2, the axis of the long rod 31, the axis of the partition pipe 4, the axis of the fixed ring piece 5, the axis of the rubber pad 6 and the axis of the inflatable rubber pad 36 are coincident. An annular step 14 is arranged in the outer sleeve 1, a large-diameter section 15 and a small-diameter section 16 which are connected in sequence are formed in the outer sleeve 1, and the pipe plug 2 and the sealing assembly are both positioned in the large-diameter section 15.

In this embodiment, the outer joint 12 is provided on the side wall of the outer sleeve 1, and the outer joint 12 is located between the annular step 14 and the band flange 11. Namely, the outer joint 12 is located at the small diameter section 16, and the outer joint 12 communicates the outside and the inside of the outer sleeve 1. Two external connectors 12 which are symmetrical up and down are arranged on the side wall of the outer sleeve 1, and the two external connectors 12 are respectively connected with a pressure gauge and an emptying valve, as shown in figure 1. The large-diameter section 15 comprises an internal thread section 13, an external thread is arranged on the peripheral surface of the plug 2, and the external thread of the plug 2 is in threaded connection with the internal thread section 13.

In this embodiment, the long rod 31 has a cylindrical structure with one closed end and the other open end, the end cap 32 is sleeved on the other end of the long rod 31, the end cap 32 is provided with an air injection external interface 33, and air can be injected into the axial air injection duct 34 through the air injection external interface 33. The end cap 32 is a cylindrical structure with one end closed and the other end open, the open end of the long rod 31 is connected with the open end of the end cap 32 in a screw sealing manner, and the air injection external interface 33 is connected with the closed end of the end cap 32, as shown in fig. 3. The inner diameter of the small-diameter section 16 of the outer sleeve 1 is larger than the outer diameter of the long rod body 31.

In this embodiment, an annular baffle 35 is further fixedly sleeved outside one end of the long rod 31, an annular groove is formed in the outer peripheral surface of the annular baffle 35, the inflatable rubber pad 36 is sleeved in the annular groove of the annular baffle 35 in a matching manner, the inflatable rubber pad 36 is connected with the annular baffle 35 in a sealing manner, for example, the long rod 31 is welded with the annular baffle 35. The annular baffle 35 serves to axially position the pneumatic rubber pad 36, i.e. the pneumatic rubber pad 36 can only radially expand and cannot move axially relative to the long rod 31. The outer diameter of the annular baffle 35 is smaller than or equal to the inner diameter of the small-diameter section 16 of the outer sleeve 1.

In this embodiment, a radial outer through hole is formed in the annular baffle 35, a radial inner through hole is formed in the side wall of the long rod body 31, and the annular groove of the annular baffle 35 is communicated with the axial gas injection duct 34 through the radial outer through hole and the radial inner through hole in sequence. When high-pressure gas is injected into the axial gas injection duct 34, the inflatable rubber cushion 36 expands radially, and the inflatable rubber cushion 36 is in an expanded state. When high-pressure gas is not injected into the axial gas injection duct 34 (or the air pressure in the axial gas injection duct 34 is a standard atmospheric pressure), the inflatable rubber gasket 36 does not expand or contract radially, and the inflatable rubber gasket 36 is in a natural state.

When the inflatable rubber pad 36 is in the expanded state, the outer diameter of the inflatable rubber pad 36 is larger than the outer diameter of the annular baffle 35, and the inner diameter of the inflatable rubber pad 36 is smaller than the outer diameter of the annular baffle 35; when the pneumatic rubber pad 36 is in a natural state, the outer diameter of the pneumatic rubber pad 36 is smaller than or equal to the outer diameter of the annular baffle 35.

In this embodiment, the partition pipe 4 and the fixing ring piece 5 are both in clearance fit with the large-diameter section 15 of the outer sleeve 1, the fixing ring piece 5 is in threaded connection with the partition pipe 4, the inner diameter of the rubber mat 6 is the same as that of the fixing ring piece 5, and the outer diameter of the rubber mat 6 is the same as that of the fixing ring piece 5. The thickness of the rubber pad 6 may be 1mm to 3 mm. The sealing assembly comprises two fixed ring sheets 5 and two annular rubber cushions 6, wherein one fixed ring sheet 5 is abutted with the screwed plug 2, and the other fixed ring sheet 5 is abutted with the annular step 14.

In the present embodiment, the axis of the axial gas injection hole 34 is parallel to the axis of the long rod body 31, the axis of the axial gas injection hole 34 is offset from the axis of the long rod body 31, and the distance between the axis of the axial gas injection hole 34 and the axis of the long rod body 31 may be 1mm to 10 mm.

Straight pushing-type gate slips changes entry end and the exit end of oil field gate that device is directed against all is equipped with the flange, for example 250, 350 type well head gate. The outer diameter of the clamp convex ring 11 is approximately equal to that of an outlet end flange of the oilfield gate. The outside diameter of the annular baffle 35 is approximately equal to the inside diameter of the inlet end of the oilfield gate. The length of the long connecting rod 3 is more than 1.5 to 2 times of the length of the gate, and the length of the long connecting rod 3 is more than 1.5 to 2 times of the length from the inlet end to the outlet end of the gate.

The operation of the direct-push type gate slip replacing device will be described.

1. The collar 11 of the outer sleeve 1 is first fixed to the outlet flange of the sluice gate 7 to be replaced (e.g. a 250-well sluice).

2. 2 external joints 12 are respectively connected with a pressure gauge and an emptying valve.

3. The annular baffle 35 of the long link 3 is placed inside the outer sleeve 1.

4. And assembling the partition pipe 4, the fixed ring piece 5 and the rubber gasket 6 into the sealing assembly.

5. The long connecting rod 3 is passed through the plug 2 and the seal assembly.

6. The plug 2 carries the long connecting rod 3 and the sealing assembly to be screwed into the outer sleeve 1.

7. The end cap 32 of the upper long link 3 is mounted and then the long link 3 is pushed to move inward (i.e., to the right in fig. 6), opening the shutter of the shutter 7.

8. After the ring-shaped baffle 35 of the long connecting rod 3 is predicted to pass through the gate to reach the other side pipeline or the inlet end of the gate 7, high-pressure gas is filled into the axial gas injection pore passage 34 through the gas injection external interface 33, so that the gas-filled rubber pad 36 is inflated to expand radially and set. As shown in fig. 6, the left and right sides are sealed by the pneumatic rubber gasket 36.

9. The slips of the lower gate 7 are removed and replaced with a wrench or the like.

10. After the replacement is finished, the air pressure in the axial air injection pore canal 34 is removed, the long connecting rod 3 is lifted, namely, the long connecting rod 3 moves leftwards in the figure 6, and at the moment, the emptying valve on the outer joint 12 is opened, and the internal oil-gas-water mixed liquid is discharged.

11. After the long connecting rod 3 is pulled out from the gate 7, the gate plate of the gate 7 is closed, the outer sleeve 1 is detached, the outer sleeve 1 is separated from the gate 7, and the operation is completed.

In addition, the straight push type gate slip replacing device may replace other components (except slips) on the gate 7 without stopping the well, and may be referred to as a "straight push type gate maintenance device". The straight-push type gate slip replacing device can replace even the whole gate without stopping the well, and the straight-push type gate slip replacing device can also be called as a 'straight-push type gate replacing device'.

The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and the technical scheme all can the independent assortment use.

Claims

1. A direct-push type gate slip replacing device is characterized by comprising an outer sleeve (1), a plug (2) and a long connecting rod (3) which are sequentially sleeved from outside to inside, wherein a clamping convex ring (11) is arranged at one end of the outer sleeve (1), an annular step (14) is arranged in one end of the outer sleeve (1), the plug (2) is positioned in the other end of the outer sleeve (1), a sealing assembly is connected between the plug (2) and the annular step (14) and sleeved between the outer sleeve (1) and the long connecting rod (3), the sealing assembly comprises a blocking pipe (4), a fixed ring sheet (5) and an annular rubber gasket (6), the fixed ring sheet (5) is sleeved outside two ends of the blocking pipe (4), the rubber gasket (6) is positioned between the fixed ring sheet (5) and the blocking pipe (4), the long connecting rod (3) comprises a long rod body (31) and an annular inflatable rubber gasket (36), plug (2) and outer sleeve (1) threaded connection, plug (2) and wall pipe (4) all with long-pole body (31) transition fit, be equipped with axial gas injection pore (34) in the long-pole body (31), outside the one end of long-pole body (31) was located to inflatable rubber pad (36) cover, inflatable rubber pad (36) were located the outside of clamp bulge loop (11), the axis direction removal of long-pole body (31) can be followed in long connecting rod (3), when the gas injection was in to axial gas injection pore (34), the external diameter of inflatable rubber pad (36) can the grow.

2. The direct-push type gate slip replacing device according to claim 1, wherein the axis of the outer sleeve (1), the axis of the plug (2), the axis of the long rod body (31), the axis of the partition pipe (4), the axis of the fixed ring piece (5) and the axis of the rubber mat (6) are coincident.

3. A direct-push type sluice slip replacing device according to claim 2, characterized in that an outer joint (12) is arranged on the side wall of the outer sleeve (1), and the outer joint (12) is positioned between the annular step (14) and the clip convex ring (11).

4. A direct-push type gate slip replacing device as claimed in claim 3, wherein the side wall of the outer sleeve (1) is provided with two outer connectors (12) which are symmetrical up and down, and the two outer connectors (12) are respectively connected with a pressure gauge and a vent valve.

5. The direct-push type gate slip replacing device according to claim 1, wherein the long rod body (31) is a cylindrical structure with one end closed and the other end open, an end cap (32) is sleeved outside the other end of the long rod body (31), an air injection external interface (33) is arranged on the end cap (32), and air can be injected into the axial air injection pore canal (34) through the air injection external interface (33).

6. The direct-push type gate slip replacing device according to claim 5, wherein the end cap (32) is a cylindrical structure with one end closed and the other end open, the open end of the long rod body (31) is in threaded connection with the open end of the end cap (32), and the gas injection external interface (33) is connected with the closed end of the end cap (32).

7. The direct-pushing type gate slip replacing device as claimed in claim 5, wherein an annular baffle (35) is fixedly sleeved outside one end of the long rod (31), an annular groove is formed in the outer peripheral surface of the annular baffle (35), the inflatable rubber gasket (36) is sleeved in the annular groove of the annular baffle (35) in a matching manner, and the inflatable rubber gasket (36) is connected with the annular baffle (35) in a sealing manner.

8. The direct-push type gate slip replacing device according to claim 7, wherein a radial outer through hole communicating the annular groove and the axial gas injection hole (34) is formed in the annular baffle (35), and when the inflatable rubber gasket (36) is in an expanded state, the outer diameter of the inflatable rubber gasket (36) is larger than that of the annular baffle (35); when the inflatable rubber pad (36) is in a natural state, the outer diameter of the inflatable rubber pad (36) is smaller than or equal to that of the annular baffle (35).

9. The direct-push type gate slip replacing device according to claim 1, wherein the blocking pipe (4) and the fixing ring piece (5) are in clearance fit with the outer sleeve (1), the fixing ring piece (5) is in threaded connection with the blocking pipe (4), the inner diameter of the rubber pad (6) is the same as that of the fixing ring piece (5), and the outer diameter of the rubber pad (6) is the same as that of the fixing ring piece (5).