CN212671705U

CN212671705U - Environment-friendly underground oil drainage tool

Info

Publication number: CN212671705U
Application number: CN202021524815.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Huayun Longteng Machinery Manufacturing Co ltd
Current assignee: Huayun Longteng Machinery Manufacturing Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-09
Anticipated expiration: 2030-07-29

Abstract

The utility model provides an environmental protection draining instrument in pit. Relates to the field of oil field downhole tools. The ring pipe at the lower part of the oil sealing pipe is communicated with the oil drainage pipe of the oil drainage body in a clearance fit manner, the hole wall of the central hole of the oil drainage body is provided with an oil drainage hole, the buffer cavity and the oil drainage port are communicated, and the matching surfaces of the oil drainage pipe and the ring pipe at the upper side and the lower side of the oil drainage port are respectively provided with a sealing ring; the ring pipe is connected with the spline shaft of the oil drainage pipe in a matching way through the spline groove at the upper part of the sealing ring at the upper part of the oil drainage port. The utility model discloses following beneficial effect has: through setting up at the outside cushion chamber of oil drain hole, avoided the high-pressure oil stream to produce hydraulic shock to the inside pipe wall of sleeve pipe, can open and close the pressure release mouth through reciprocating between twice sealing washer and the ring canal, utilize spacing pipe restriction to seal oil pipe's the interval that reciprocates, can know pressure release switch position in the pit on ground, avoided the rotation type bleeder in the past brought easily to cause the malfunction, cause the problem of draining accident.

Description

Environment-friendly underground oil drainage tool

The technical field is as follows:

the utility model belongs to the technical field of the oil field instrument technique in the pit and specifically relates to an environmental protection draining instrument in pit.

Background art:

when lifting oil pipe in the oil well operation, need release the oil well with the well liquid in the oil pipe in to reduce environmental pollution, reduce workman's intensity of labour, on the scene mostly be the rotation type bleeder frequently, the rotation type bleeder has anchoring function again and does not have anchoring function two kinds, does not have anchoring function mostly the friction apparatus assembly and links to each other with draining cover directness, the shortcoming of this kind of structure lies in: in any state (oil pipe lifting or oil pipe lowering), oil can be drained only by rotating the oil pipe forward, and particularly in the oil pipe lowering process, misoperation is easily caused under the condition that back tongs fail, and oil drainage accidents are caused.

The utility model has the following contents:

in order to solve the problem, the utility model provides an environmental protection draining instrument in pit.

The technical scheme of the utility model is that: an underground environment-friendly oil drainage tool comprises an oil sealing pipe, wherein an upper joint is arranged at the upper part of the oil sealing pipe, a ring pipe at the lower part of the oil sealing pipe is in clearance fit communication with an oil drainage pipe of an oil drainage body, a lower joint is arranged at the lower part of the oil drainage body, an oil drainage hole is formed in the hole wall of a central hole of the oil drainage body at the upper part of the lower joint, the oil drainage hole is communicated with a buffer cavity, the buffer cavity is communicated with an oil drainage port, the oil drainage port is positioned at the pipe wall of the oil drainage pipe, and sealing rings are respectively arranged on the;

the ring pipe is connected with the spline shaft of the oil drainage pipe in a matching way through the spline groove at the upper part of the sealing ring at the upper part of the oil drainage port.

The inner hole of the upper part of the oil drainage pipe is in threaded sealing connection with a limiting pipe, the top of the limiting pipe is provided with a boss, and the boss is positioned at the top of an annular groove formed in the central hole of the oil sealing pipe.

The utility model discloses following beneficial effect has: through setting up at the outside cushion chamber of oil drain hole, avoided the high-pressure oil stream to produce hydraulic shock to the inside pipe wall of sleeve pipe, can open and close the pressure release mouth through reciprocating between twice sealing washer and the ring canal, utilize spacing pipe restriction to seal oil pipe's the interval that reciprocates, can know pressure release switch position in the pit on ground, avoided the rotation type bleeder in the past brought easily to cause the malfunction, cause the problem of draining accident.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a working diagram of the present invention.

In the figure, 1-an oil sealing pipe, 2-an upper joint, 3-a limiting pipe, 4-a boss, 5-an annular groove, 6-a spline groove, 7-an oil drainage port, 8-a buffer cavity, 9-an oil drainage body, 10-an oil drainage hole, 11-a lower joint, 12-a spline shaft, 13-an oil drainage pipe and 14-an annular pipe.

The specific implementation mode is as follows:

the present invention will be further explained with reference to the accompanying drawings:

as shown by a figure 1 and a figure 2, the underground environment-friendly oil drainage tool comprises an oil sealing pipe 1, wherein an upper connector 2 is arranged at the upper part of the oil sealing pipe 1, a ring pipe 14 at the lower part of the oil sealing pipe 1 is communicated with an oil drainage pipe 13 of an oil drainage body 9 in a clearance fit manner, a lower connector 11 is arranged at the lower part of the oil drainage body 9, an oil drainage hole 10 is formed in the hole wall of the central hole of the oil drainage body 9 at the upper part of the lower connector 11, the oil drainage hole 10 is communicated with a buffer cavity 8, the buffer cavity 8 is communicated with an oil drainage port 7, the oil drainage port 7 is positioned at the pipe wall of the oil drainage pipe 13, sealing rings are respectively arranged on the matching surfaces of the oil drainage pipe 13 and the ring pipe 14 at the;

the upper part of a sealing ring at the upper part of the oil drain opening 7 is provided with an annular pipe 14 which is matched and connected with a spline shaft 12 of an oil drain pipe 13 through a spline groove 6, and the spline connection can transmit torque between the oil seal pipe 1 and the pressure relief body 9 and can move along the axial direction.

The upper portion hole screw thread sealing connection spacing pipe 3 of bleeder 13, spacing pipe 3 top is equipped with boss 4, boss 4 is located the 5 tops of the annular of sealing 1 centre bore of oil pipe and opening, when sealing oil pipe 1 and lifting, boss 4 of spacing pipe 3 descends when annular 5 bottoms, play limiting displacement promptly, seal oil pipe 1 and can not upwards remove again, when sealing oil pipe 1 and mentioning this position, ring pipe 14 also rises to the position that exposes pressure release mouth 7, the inside oil of draining body 9 is arranged the buffering chamber 8 in through oil drain hole 10 and is cushioned, then flow to bleeder 7 and discharge, can not directly arrange the intraductal hydraulic shock that produces the sleeve pipe of cover under high pressure, will seal oil pipe 1 and descend after the oil extraction, can close bleeder 7.

Through setting up at the outside cushion chamber of oil drain hole, avoided the high-pressure oil stream to produce hydraulic shock to the inside pipe wall of sleeve pipe, can open and close the pressure release mouth through reciprocating between twice sealing washer and the ring canal, utilize spacing pipe restriction to seal oil pipe's the interval that reciprocates, can know pressure release switch position in the pit on ground, avoided the rotation type bleeder in the past brought easily to cause the malfunction, cause the problem of draining accident.

Claims

1. The utility model provides an environmental protection draining instrument in pit, includes oil seal pipe (1), its characterized in that: an upper connector (2) is arranged at the upper part of an oil sealing pipe (1), a ring pipe (14) at the lower part of the oil sealing pipe (1) is communicated with an oil drainage pipe (13) of an oil drainage body (9) in a clearance fit manner, a lower connector (11) is arranged at the lower part of the oil drainage body (9), an oil drainage hole (10) is formed in the hole wall of a central hole of the oil drainage body (9) at the upper part of the lower connector (11), the oil drainage hole (10) is communicated with a buffer cavity (8), the buffer cavity (8) is communicated with an oil drainage port (7), the oil drainage port (7) is positioned at the pipe wall of the oil drainage pipe (13), and sealing rings are respectively arranged on the matching surfaces of the oil drainage pipe (13) and the ring;

the upper part of a sealing ring at the upper part of the oil drainage opening (7) is provided with a ring pipe (14) which is matched and connected with a spline shaft (12) of an oil drainage pipe (13) through a spline groove (6).

2. An environmental protection drainage tool in a well according to claim 1, wherein: the oil drain pipe (13) is connected with the limiting pipe (3) in a threaded and sealed manner through an inner hole in the upper portion, a boss (4) is arranged at the top of the limiting pipe (3), and the boss (4) is located at the top of an annular groove (5) formed in the center hole of the oil seal pipe (1).