CN2756821Y

CN2756821Y - Multifunction rod control type oil draining device

Info

Publication number: CN2756821Y
Application number: CN 200420054072
Authority: CN
Inventors: 汪慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-25
Filing date: 2004-12-25
Publication date: 2006-02-08
Anticipated expiration: 2014-12-25

Abstract

The utility model relates to a multifunctional rod control type oil draining device. The utility model mainly solves the problems of repetitious working, high time and labor consumption and long working period when the existing downhole oil draining device is used. The utility model is characterized in that a touching body (6) which is respectively sealed with an upper joint (1) and a casing body (3) is arranged in the casing body (3) which is provided with oil draining holes (7), the lower end of the touching body (6) is connected with a fixing seat (8), the fixing seat (8) is clamped outside of a central tube (10) in a sliding way through a roll ball (9), the central tube (10) is provided with a slideway (11), the slideway (11) is spirally wound on the external wall of the central tube (10) and is spaced in a long and short way, and springs (12) are arranged between the fixing seat (8) and the central tube (10). The multifunctional rod control type oil draining device needs no many times of working, a switch of a pressure relief hole can be controlled by a sucker rod, and the utility model has the characteristics of simple structure, low time and labor consumption and short working period.

Description

Multi-functional rod control type bleeder

Technical field:

The utility model relates to a kind of downhole tool used in the oil recovery field, oil field, especially multi-functional rod control type bleeder.

Background technology:

In the oil recovery process of oil field, for the higher oil well of field pressure, in rod job, when removing the oil pipe operation, high pressure liquid cognition in the well is ejected into the well site from the down-hole, not only have a strong impact on workman's normal operation, bring many beyond thought potential safety hazards, and cause the environment pollution in well site, destroy ecological environment.At present, a kind of down-hole commonly used draining instrument is discharged into the highly pressurised liquid of oil well pump below in the sleeve pipe annular space, pressure release cover wherein by dowel fixes on shell body, suppressing in the operation forward direction well pin cut off falls in the well pressure release cover, expose the relief hole on the shell body this moment, by this relief hole pressure release, and repeatedly operation repeatedly like this, waste time and energy, duty cycle is long.

The utility model content:

Need repeatedly operation repeatedly in use in order to overcome existing down-hole draining instrument, waste time and energy and deficiency that duty cycle is long, the utility model provides a kind of multi-functional rod control type bleeder, this multi-functional rod control type bleeder does not need repeatedly operation, can control the switch of relief hole by sucker rod, have characteristics simple in structure, time saving and energy saving and that duty cycle is short.

The technical solution of the utility model is: this multi-functional rod control type bleeder comprises lower contact, be connected with shell body between the last lower contact, lower contact is built-in with valve valve seat and valve valve ball, the shell body that has the draining hole is built-in with the shake-up body that seals respectively with top connection and shell body, touch the body lower end and be connected and fixed seat, holder is stuck in by the ball cunning outside the central tube that has slideway, and slideway is spirally coiled in central tube outer wall and length interval, between holder and the central tube spring is arranged.

The external wall of above-mentioned shake-up has and contains sand launder.

The utlity model has following beneficial effect: owing to take such scheme, can promote to touch the switch that body is controlled relief hole by sucker rod, both can play the effect of former fixing all valves, can open and close relief hole on ground easily again, do not need repeatedly operation, simple in structure, time saving and energy saving, duty cycle is short.

Description of drawings:

Accompanying drawing 1 is a structure sectional view of the present utility model;

Accompanying drawing 2 is expanded views of the slideway 11 of central tube 10 outer walls among Fig. 1.

1-top connection among the figure, the 2-lower contact, the 3-shell body, 4-valve valve seat, 5-valve valve ball, 6-touches body, 7-draining hole, the 8-holder, the 9-ball, the 10-central tube, the 11-slideway, the 12-spring, 13-contains sand launder.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

As Fig. 1 in conjunction with shown in Figure 2, this multi-functional rod control type bleeder comprises lower contact (1,2), last lower contact (1,2) be connected with shell body 3 between, lower contact 2 is built-in with valve valve seat 4 and valve valve ball 5, and the shell body 3 that has draining hole 7 is built-in with the shake-up body 6 that seals respectively with top connection 1 and shell body 3, shake-up body 6 outer walls have and contain sand launder 13, can avoid touching the sand card takes place between body 6 and the shell body 3; Touch body 6 lower ends and be connected and fixed seat 8, holder 8 is by ball 9 sliding being stuck in outside the central tube 10 that has slideway 11, slideway 11 is spirally coiled in central tube 10 outer walls and length interval, degree of freedom was big when ball 9 slided in slideway 11, be difficult for taking place the jam phenomenon, its effect obviously is better than fixing pin, between holder 8 and the central tube 10 spring 12 is arranged.

During actual the use, top connection 1 is connected with the pump barrel of oil well pump, removes original standing valve, and top connection 1 seals with touching body 6 during operate as normal, and just the draining hole on the shell body 37 is obstructed with top connection 1, is in closed condition; The effect that valve valve seat 4 in lower contact this moment 1 and valve valve ball 5 have played original standing valve.When carrying out underground work, utilizing oil pump plunger piston to promote to touch body 6 moves down, ball 9 enters in the short slideway of central tube 10 outer walls, touch body 6 and be in lower dead center, touch body 6 and leave former sealing station, between top connection 1 and the shake-up body 6 space is arranged, draining hole 7 communicates with top connection 1, when playing a lower sucker rod, oil pipe, the liquid in the oil well enters in shell body 3 casing annulus outward by draining hole 7, has played the effect of draining; After the end of job, promote to touch body 6 downwards, ball 9 enters in the long slideway of central tube 10 outer walls, touches on the body 6 and moves, and under the effect of spring 12 elastic force, touches body 6 and gets back to and top connection 1 sealing station, and oil well pump normally recovers the oil.Use this device not need repeatedly operation, can promote to touch the switch of body 6 and then control relief hole 7 by sucker rod, simple in structure, time saving and energy saving, duty cycle is short.

Claims

1, a kind of multi-functional rod control type bleeder, comprise lower contact (1,2), last lower contact (1,2) be connected with shell body (3) between, lower contact (2) is built-in with valve valve seat (4) and valve valve ball (5), it is characterized in that: the shell body (3) that has draining hole (7) is built-in with the shake-up body (6) that seals respectively with top connection (1) and shell body (3), touch body (6) lower end and be connected and fixed seat (8), holder (8) is stuck in outside the central tube (10) that has slideway (11) by ball (9) is sliding, slideway (11) is spirally coiled in central tube (10) outer wall and length interval, between holder (8) and the central tube (10) spring (12) is arranged.

2, multi-functional rod control type bleeder according to claim 1 is characterized in that: shake-up body (6) outer wall has and contains sand launder (13).