CN212671720U

CN212671720U - Oil bailing swab

Info

Publication number: CN212671720U
Application number: CN202020729032.6U
Authority: CN
Inventors: 张文会; 蒋明; 崔和安; 陈家庆; 王维郎; 王维浩; 周洪涛; 张诗邈; 张奇; 刘宏伟; 周辉
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-03-09
Anticipated expiration: 2030-05-07

Abstract

The utility model provides a swab of fishing for oil relates to oil production and drilling and production machinery field, this swab of fishing for oil includes swab body and stripper rubber, the swab body is the tube-shape and has the water conservancy diversion chamber that link up from top to bottom, be provided with valve ball and disk seat in the water conservancy diversion intracavity, the outer wall of disk seat and the inner wall sealing connection in water conservancy diversion chamber, the valve pocket that link up from top to bottom has been seted up on the disk seat, the valve ball sets up in the disk seat top and can seal the valve pocket, stripper rubber is cyclic annular and the cover is established outside the swab body, stripper rubber's inner edge and the outer wall of swab body are sealed to be cooperated, set up the first passageway that overflows that runs through the lateral wall on the lateral wall of swab body, first passageway that overflows is located the top of. The utility model provides a bailing swab has shortened the whole length of bailing swab, can need not the dismouting counter weight of bailing during the construction, improves the convenience and the security of the operation of bailing.

Description

Oil bailing swab

Technical Field

The utility model relates to an oil production and drilling and production machinery field, in particular to oil bailing swab.

Background

At present, oil bailing vehicles and matched oil bailing equipment are mostly adopted in mobile oil extraction construction. Specifically, the devices used from the bottom to the top mainly include an oil bailing counterweight, a split oil bailing swab (generally a double-split oil bailing swab), a steel wire rope, oil bailing wellhead devices and the like. The existing oil fishing equipment has some problems in practical application:

1. the split oil bailing swab forms an oil flow channel which is close to a half of the annular space of the sleeve when the split oil bailing swab descends in the sleeve, so that the oil bailing swab is easy to descend when the diameter of the sleeve is reduced, but is not easy to ascend, and is commonly called as a snap swab;

2. when oil is bailed, the split type oil bailing sucker needs to be operated by an independent lower counterweight, so that the underground fittings of the oil bailing well are too long and cannot be lifted into a wellhead when the oil bailing well rises, and a main valve of the wellhead can be closed only by destructively shearing a steel wire rope when a blowout occurs;

3. the counterweight of the split oil bailing swab is large and is arranged at the bottom, and if the counterweight and the swab are completely dropped into a well when the oil bailing is encountered, the difficulty in fishing is high;

4. when fishing oil, need repeatedly dismouting independent fishing oil counter weight and fishing oil wellhead, loaded down with trivial details and heavy promptly, also increased staff's intensity of labour and safe environmental protection risk simultaneously.

In view of the above, the inventor designs an oil bailing swab through repeated experiments according to production design experiences in the field and related fields for many years, so as to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil bailing swab can shorten the whole length of oil bailing swab, need not dismouting oil bailing counter weight, improves the convenience and the security of oil bailing operation.

In order to achieve the above object, the utility model provides a swab of fishing for oil, wherein, the swab of fishing for oil includes swab body and rubber seal, the swab body is the tube-shape and has the water conservancy diversion chamber that link up from top to bottom, be provided with valve ball and disk seat in the water conservancy diversion intracavity, the outer wall of disk seat with the inner wall sealing connection in water conservancy diversion chamber, set up the valve pocket that link up from top to bottom on the disk seat, the valve ball sets up the disk seat top can seal the valve pocket, rubber seal is cyclic annular and cover and establishes outside the swab body, rubber seal's inner edge with the sealed cooperation of outer wall of swab body, set up an at least first passageway that overflows that runs through the lateral wall on the lateral wall of swab body, overflow the passageway and be located the disk seat with rubber seal's top.

The oil bailing swab is characterized in that a plurality of flow-through channels are formed above the valve seat and the sealing rubber sheet, and the flow-through channels are uniformly distributed along the circumferential direction of the swab body.

The oil pumping sucker is characterized in that a plurality of second overflowing channels penetrating through the side wall are also formed below the valve seat and the sealing rubber sheet.

The oil swab as above, wherein an annular tray is arranged below the sealing rubber skin, the sealing rubber skin is arranged on the swab body through the tray, the tray is sleeved outside the swab body, the inner edge of the tray is fixedly and hermetically connected with the outer wall of the swab body, and the sealing rubber skin is fixedly and hermetically connected with the tray.

The oil extractor as above, wherein the outer diameter of the tray is smaller than the outer diameter of the sealing rubber sheet.

The oil bailing swab is characterized in that the sealing rubber is fixedly connected to the tray through a plurality of screws, and the plurality of screws are uniformly distributed along the circumferential direction of the tray.

The oil pumping sucker is characterized in that the sealing rubber is provided with a notch, the sealing rubber is provided with a notch formed along the radial direction of the sealing rubber, and the notch penetrates from the outer edge of the sealing rubber to the inner edge of the sealing rubber.

The oil bailing swab is characterized in that the top end of the swab body is connected with an upper suspension part, and the bottom end of the swab body is connected with a lower suspension part.

The oil bailing swab is characterized in that the upper suspension part and the swab body are in threaded connection, and the lower suspension part and the swab body are in threaded connection.

The oil bailing swab is characterized in that fixing pins are respectively arranged between the upper suspension part and the swab body and between the lower suspension part and the swab body.

Compared with the prior art, the utility model has the following characteristics and advantages:

the utility model provides a swab of salvaging for oil adopts whole section of thick bamboo formula structure, and crude oil goes upward through this internal water conservancy diversion chamber of swab and flows to the top of disk seat and rubber seal through the circulation channel, and overall structure is compact, and the volume of swab body is short and small, also need not to carry out the dismouting to the counterweight of salvaging for oil during the construction again, has both alleviateed operating personnel's intensity of labour, has subductd the safety ring and has protected the risk again. Simultaneously, because the volume of swab body is short and small, effectively shortened the height of a safe blowout prevention barrel, operating personnel also need not ascending a height when adding the packing operation, subducted the risk that the slippage of ascending a height was hindered by the tumble.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.

Fig. 1 is a schematic structural view of the oil bailing swab provided by the present invention;

FIG. 2 is a schematic structural view of the valve seat of the present invention;

FIG. 3 is a cross-sectional view of the swab body at the first flow passage of the present invention;

fig. 4 is a schematic structural view of the middle seal rubber of the present invention;

fig. 5 is a schematic view of the connection between the middle drawer body and the upper suspension portion of the present invention.

Description of reference numerals:

100. oil bailing swab; 10. A swab body;

11. a flow guide cavity; 12. A first flow passage;

13. a second flow passage;

20. sealing rubber sheets; 21. Cutting;

22. mounting holes; 30. A valve ball;

40. a valve seat; 41. A valve cavity;

50. a tray; 60. An upper suspension portion;

70. a lower suspension portion; 80. And fixing the pin.

Detailed Description

The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of explanation only, and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention.

As shown in fig. 1 to 5, the utility model provides a swab 100 for oil, this swab 100 for oil includes swab body 10 and rubber seal 20, swab body 10 is the tube-shape and has the water conservancy diversion chamber 11 that link up from top to bottom, install valve ball 30 and disk seat 40 in the water conservancy diversion chamber 11, the outer wall of disk seat 40 and the sealed fixed connection of inner wall in water conservancy diversion chamber 11, the valve pocket 41 that link up from top to bottom has been seted up on the disk seat 40, valve ball 30 sets up in disk seat 40 top and can seal valve pocket 41, rubber seal 20 is cyclic annular and the cover is established outside swab body 10, the inner edge of rubber seal 20 and the outer wall sealing fit of swab body 10, first passageway 12 that overflows has been seted up on the lateral wall of swab body 10, first passageway 12 that overflows is located the lateral wall that the top of disk seat 40 and rubber seal 20 runs through swab body 10.

The utility model provides a swab 100 of salvaging for oil adopts whole section of thick bamboo formula structure, and crude oil goes upward and flows to the top of disk seat 40 and rubber seal 20 through first overflow channel 12 through the water conservancy diversion chamber 11 in the swab body 10, and overall structure is compact, and swab body 10 is small and small, need not to carry out the dismouting to the counterweight of salvaging for oil again during the construction, has both alleviateed operating personnel's intensity of labour, has subducted the safety ring and has protected the risk again. Meanwhile, the swab body 10 is small in size, so that the height of the safety blowout prevention barrel is effectively shortened, the operator does not need to ascend when packing is added, and the risk of ascending, slipping and falling injury is reduced.

The utility model provides a when fishing for oil swab 100 down in the pit shaft, rubber seal 20 turns over on because of thin and soft elasticity, and crude oil passes through and goes upward in the water conservancy diversion chamber 11 of swab body 10 and the first passageway 12 that overflows in the pit shaft, and hesitation crude oil can directly get into the ring cover space above rubber seal 20 through first passageway 12 that overflows in, has accelerated the mobility of crude oil, and it is more smooth and easy to make the down of fishing for oil operation.

In an alternative example, a plurality of second flow-through channels 13 are also formed through the side wall below the valve seat 40 and the rubber seal 20.

In an optional example, two rows of first overflowing passages are arranged above the valve seat 40 and the seal rubber 20, each row includes a plurality of first overflowing passages 12 uniformly distributed along the circumferential direction of the drawer body 10, two rows of second overflowing passages are also arranged below the valve seat 40 and the seal rubber 20, and each row includes a plurality of second overflowing passages 13 uniformly distributed along the circumferential direction of the drawer body 10.

In an alternative embodiment of the present invention, the first flow-through channel 12 and the second flow-through channel 13 are both fan-shaped narrow slits, which facilitates the flow of crude oil.

In an optional example of the present invention, an annular tray 50 is disposed below the rubber seal 20, the rubber seal 20 is installed on the drawer body 10 through the tray 50, the tray 50 is sleeved on the drawer body 10, the inner edge of the tray 50 is connected to the outer wall of the drawer body 10 in a fixed and sealed manner, and the rubber seal 20 is connected to the tray 50 in a fixed and sealed manner.

In an optional example, the rubber seal 20 is fixedly connected to the tray 50 by a plurality of screws, the plurality of screws are uniformly distributed along the circumference of the tray 50, the rubber seal 20 is provided with mounting holes 22 aligned and matched with the screws, the tray 50 is correspondingly and fixedly provided with a plurality of female screw fasteners, and the screws penetrate through the mounting holes 22 and are in threaded connection with the female screw fasteners to fix the rubber seal 20 to the tray 50.

In an optional example, 8 to 12 screws are uniformly distributed on the sealing rubber sheet 20.

In an alternative example of the present invention, the outer diameter of the rubber seal 20 is equal to the inner diameter of the sleeve, the outer diameter of the tray 50 is close to the inner diameter of the sleeve and slightly smaller than the outer diameter of the rubber seal 20, so that the outer edge of the rubber seal 20 is larger than the outer edge of the tray 50, and thus the rubber seal 20 can be turned upwards when the swab body 10 goes downwards, thereby reducing the downward resistance of the oil swab 100. Simultaneously, because the external diameter of tray 50 is close the sheathed tube internal diameter, when oil bailing swab 100 descends, if the sleeve pipe warp the undergauge suddenly, then tray 50 can block in undergauge position top, can not continue down for oil bailing swab 100 descends and meets and hinder, just also can not take place current oil bailing swab and meet when the sleeve pipe undergauge, directly down pass through and go upward but the card in the unable circumstances of proposing in undergauge department, avoided the card to take out the emergence.

In an alternative example of the present invention, the rubber seal 20 has a cut 21 formed along a radial direction thereof, and the cut 21 extends from an outer edge of the rubber seal 20 to an inner edge of the rubber seal 20. During installation, the sealing rubber sheet 20 can be sleeved outside the swab body 10 through the notch 21, the swab body 10 does not need to be detached from a tubular column, and the installation is very convenient.

In an alternative embodiment of the present invention, an upper hanging portion 60 is connected to the top end of the drawer body 10.

In an alternative embodiment of the present invention, a lower hanging portion 70 is connected to the bottom end of the drawer body 10.

In an alternative example, the drawer body 10 and the upper hanging portion 60 and the drawer body 10 and the lower hanging portion 70 are respectively connected by threads.

Preferably, as shown in fig. 5, fixing pins 80 are further provided between the drawer body 10 and the upper hanging portion 60, and between the drawer body 10 and the lower hanging portion 70, respectively. The fixing pin 80 is disposed along the radial direction of the drawer body 10, and penetrates through the drawer body 10 and the upper hanging portion 60 (or the lower hanging portion 70), so as to further enhance the connection firmness between the drawer body 10 and the upper hanging portion 60 (or the lower hanging portion 70).

Now, the specific use process of the oil bailing swab 100 according to the present invention will be described in detail with reference to fig. 1 to 5:

firstly, assembling the oil bailing pump 100, installing the valve seat 40 in the diversion cavity 11 of the pump body 10 and welding and fixing, then installing the valve ball 30, then installing the upper suspension part 60 and the lower suspension part 70, wherein the upper suspension part 60 and the lower suspension part 70 can adopt the prior art, installing two vertical fixing pins 80 at the screw thread of the upper suspension part 60 and the screw thread of the lower suspension part 70 respectively, finally installing the tray 50 outside and welding and fixing, and then installing the sealing rubber 20 on the tray 50.

And then, carrying out field oil fishing operation, when fishing oil, slowly opening the blowout prevention gate to discharge the pressure of the well head of the oil well, detecting the content of hydrogen sulfide, installing the oil fishing well head, connecting a production pipeline, slowly descending the oil fishing swab 100 to a preset oil fishing position in the oil well, slowly lifting the oil fishing swab 100 to the well head, removing the oil fishing pressure, detaching the oil fishing well head and the production pipeline, and closing the blowout prevention gate. Specifically, when the oil bailing swab 100 descends, under the buoyancy action of ascending crude oil, the valve ball 30 is jacked up, the diversion cavity 11 and the first overflowing channel 12 are opened, and the crude oil in the shaft passes through the diversion cavity 11 and the first overflowing channel 12 and ascends upwards, so that the oil bailing swab 100 descends more smoothly; when the oil pump goes upward, under the action of the gravity of the liquid column above the oil pump 100 and the valve ball 30, the valve ball 30 falls onto the valve seat 40 and closes the valve cavity 41, and meanwhile, the rubber seal 20 falls to close the shaft, so that the crude oil above the valve seat 40 and the rubber seal 20 is fished out and lifted to the wellhead.

In the following description of the embodiments, the invention is described in detail, but the description is not to be construed as limiting the invention for any reason, and in particular, the features described in the different embodiments may be combined with each other as desired, thereby forming other embodiments, and the features are understood to be applicable to any one embodiment and not limited to the described embodiments unless explicitly described to the contrary.

Claims

1. The oil bailing swab is characterized by comprising a swab body and a sealing rubber sheet, wherein the swab body is in a cylindrical shape and is provided with a flow guide cavity which is communicated up and down, a valve ball and a valve seat are arranged in the flow guide cavity, the outer wall of the valve seat is in sealing connection with the inner wall of the flow guide cavity, a valve cavity which is communicated up and down is formed in the valve seat, the valve ball is arranged above the valve seat and can be sealed, the sealing rubber sheet is annular and is sleeved outside the swab body, the inner edge of the sealing rubber sheet is in sealing fit with the outer wall of the swab body, at least one first overflowing channel which penetrates through the side wall is formed in the side wall of the swab body, and the first overflowing channel is located above the valve seat and the sealing rubber sheet.

2. The oil extractor of claim 1, wherein a plurality of first flow-through channels are disposed above the valve seat and the rubber seal, and the first flow-through channels are uniformly distributed along the circumferential direction of the extractor body.

3. The oil extractor of claim 2, wherein a plurality of second flow passages are formed through the sidewall below the valve seat and the rubber seal.

4. The oil extractor of claim 1, wherein an annular tray is disposed under the sealing rubber skin, the sealing rubber skin is mounted on the extractor body through the tray, the tray is sleeved outside the extractor body, the inner edge of the tray is fixedly and hermetically connected with the outer wall of the extractor body, and the sealing rubber skin is fixedly and hermetically connected with the tray.

5. The extractor of claim 4, wherein the outer diameter of the tray is smaller than the outer diameter of the rubber seal.

6. The oil extractor of claim 4, wherein the rubber seal is fixedly attached to the tray by a plurality of screws, and the plurality of screws are evenly distributed along the circumference of the tray.

7. The oil extractor of claim 1, wherein the rubber seal has a slit formed along a radial direction thereof, and the slit extends from an outer edge of the rubber seal to an inner edge of the rubber seal.

8. The oil dipper of claim 1, wherein an upper hanging portion is connected to a top end of the dipper body, and a lower hanging portion is connected to a bottom end of the dipper body.

9. The oil dipper of claim 8, wherein the upper hanging portion and the dipper body and the lower hanging portion and the dipper body are each threadably connected.

10. The oil dipper of claim 9, wherein a fixing pin is further disposed between the upper hanging portion and the dipper body and between the lower hanging portion and the dipper body.