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Mechanical oil drainage device and using method thereof

A kind of oil drainer and mechanical technology, which is applied in the field of oil drainer for oil production well tubing drainage, can solve problems such as unclamping, easy mis-opening of oil drainer, damage to casing, etc. Sealing, cost-saving effect

Inactive Publication Date: 2015-06-10
李锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional oil drainers usually include rod-throwing type oil drainer, rotary type oil drainer and internal control type oil drainer, and the rod-throwing type oil drainer cannot throw the rod to drain oil when the sucker rod falls off
The rotary oil drainer needs to be anchored in the bushing to realize the relative movement of up and down rotation, but the anchoring device will damage the bushing, and it is also prone to hard jamming and cannot be released. The internal control switch oil drainer is easy When it is opened by mistake and the sucker rod breaks off at the same time, the switch cannot be operated to drain oil

Method used

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  • Mechanical oil drainage device and using method thereof
  • Mechanical oil drainage device and using method thereof
  • Mechanical oil drainage device and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 and 13 As shown, the mechanical oil drain device of the present invention includes an oil drain valve body 1 , a valve core 2 , a guide sleeve 3 , a stem nut 4 and a spring 5 . The upper end of the oil drain valve body 1 is threadedly connected with the oil pipe collar 61 , and the oil pipe collar 61 is threaded with the connecting pipe 8 . The pump barrel is fixed on the upper side of the connecting pipe 8, the inner diameter of the connecting pipe 8 is larger than the inner diameter of the pump barrel, and the oil well pump plunger is arranged in the pump barrel, and the axial length of the oil well pump plunger is smaller than the axial length of the connecting pipe 8. The lower end of the drain valve body 1 is threaded and fixed with the lower oil pipe collar 62 . The oil discharge valve body 1 is provided with two fan-shaped through-holes 12 penetrating in the axial direction, and the centers of the outer arcs of the two fan-shaped through-holes ...

Embodiment 2

[0039] The difference between the second embodiment and the first embodiment is that the oil pipe collar 61 is fixedly connected with the pump cylinder 9 . The pump barrel 9 is provided with an oil well pump plunger, that is, a piston. The inside of the pump cylinder 9 is a stepped hole with a small upper part and a larger lower part, and the inner diameter of the small hole of the stepped hole of the pump barrel 9 is the same as the outer diameter of the plunger of the oil well pump. The inner diameter of the large hole of the stepped hole of the pump cylinder 9 is larger than the outer diameter of the plunger of the oil well pump, and its axial length is greater than the axial length of the plunger of the oil well pump.

[0040] A method for using a mechanical oil drainer, comprising the steps of:

[0041] A. Put the sucker rod down to the lowest position, the plunger of the oil pump pushes down the valve stem nut 4, and the jamming plug 21 moves down;

[0042] B. When all...

Embodiment 3

[0045] The difference between this embodiment 3 and embodiment 1 is that the oil drain valve body 1 is installed at the lower end of the connecting pipe 8. Because the oil drain valve body 1 is provided with a sealing ring 7 at the position directly opposite the oil drain hole 11, the oil drain hole 11 is an S-shaped hole. The oil drain hole 11 includes a first blind hole, a second blind hole and a communication hole. The inside of the oil drain valve body 1 is provided with a first blind hole radially on the cavity formed by the valve core 2 and the oil drain valve body 1. A second blind hole is radially opened on the outside of the oil valve body 1 at the position where there is no sealing ring 7, and the first blind hole and the second blind hole communicate through the communication hole. The connecting pipe 8 is provided with a pipe hole facing the second blind hole. When oil is drained, the oil flows out of the connecting pipe through the oil drain hole and the pipe hol...

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PUM

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Abstract

The invention discloses a mechanical oil drainage device, relates to a device for oil production, in particular to an oil drainage device for oil drainage of an oil pipe of an oil producing well and a using method of the oil drainage device, and aims to provide the mechanical oil drainage device which can ensure stability, has high reliability, is simple to drain oil, cannot damage a sleeve, cannot be blocked, is difficult to open by mistake and is suitable for an oil well adopting rod production and the using method of the mechanical oil drainage device. An oil drainage valve body (1) of the mechanical oil drainage device disclosed by the invention is provided with two axially-through sector through holes (12); a cavity formed by a valve element (2) and a valve hole (10) is positioned between a boss and a clamping plug (21); the oil drainage valve body is radially provided with an oil drainage hole (11) communicated with the cavity.

Description

technical field [0001] The invention relates to a device used for oil exploitation, in particular to an oil drainer used for draining oil from the tubing of an oil production well and its application method. Background technique [0002] In the process of oil extraction, oil pipes need to go deep into oil wells hundreds of meters or even thousands of meters deep for extraction. The oil pipes are connected in series one by one. The oil pump is generally placed at the bottom of the oil pipe. The end of the oil pump is connected to the tailpipe. The oil pump lifts the crude oil to the ground to realize the exploitation of underground crude oil. [0003] When it is necessary to overhaul oil pipes, pumps, sucker rods and other downhole pumping equipment, it is necessary to lift the oil pipes and disassemble the oil pipe groups connected in series one by one. During the dismantling process, the crude oil carried in the oil pipe may be accidentally scattered into the ground, which...

Claims

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Application Information

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IPC IPC(8): E21B34/14
CPCE21B34/14
Inventor 李锋
Owner 李锋
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