CN2644658Y

CN2644658Y - Loose-prevention type oil increasing centralizer

Info

Publication number: CN2644658Y
Application number: CN 03206869
Authority: CN
Inventors: 黄绍福
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-06
Filing date: 2003-08-06
Publication date: 2004-09-29
Anticipated expiration: 2013-08-06

Abstract

The utility model discloses an anti-doff increasing oil coadjutor, which relates to equipments for preventing pumping bar from loosing or doffing and increasing oil when used during the processes of mechanical oil production in oil field. The utility model comprises an upper joint (1), marbles (2), a marble groove (3.1), a marble groove (3.2), a central bar (4), a floating body (5), a righting body (6) and a lower joint (7). The upper joint (1) is connected with the central bar (4) by the marbles (2), the marble groove (3.1) and the marble groove (3.2), the upper joint (1) and the central bar (4) rotate relatively to avoid pumping bar connecting thread from loosing or doffing when the pumping bar is subjected by reverse rotation torsion moment. The floating body (5) is connected and combined with the righting body (6) through the lug bosses and grooves, forming into a piston body with the function of increasing oil when the pumping bar is hoisted. The utility has the advantages of simple structure, convenient installing and use, long service life, safety and reliability.

Description

Separation preventing increases oily centralizer

Technical field:

The utility model relates in the oil-field oil pumper oil recovery process, be connected in sucker rod anticreep, increase oily device.

Background technology:

In the pumping production process, because sucker rod is subjected to fluctuating load effect continuously, make the connecting thread between the every sucker rod get loose, finally cause sucker rod connect to lose efficacy, thus shortened greatly oil well the workover treatment cycle, increased cost of crude oil production.On the other hand, because the friction of pumping between infusion plug and the pump barrel causes the gap between plunger and the pump barrel to increase, leakage increases, and adds the influence of aspects such as loss of plunger stroke, makes the liquid outlet quantity of pumpingh well reduce the efficient reduction.

Summary of the invention:

The purpose of this utility model provides and a kind ofly prevents that the sucker rod connecting thread from getting loose and having the separation preventing that increases the oil well liquid outlet quantity and increase oily centralizer.

The technical solution of the utility model is as follows:

A kind of separation preventing increases oily centralizer, by the sucker rod anti-loosing device and increase oily device two parts and form.

The utility model prevents that the purpose that sucker rod gets loose is achieved in that separation preventing increases oily centralizer and is formed by connecting by top connection and core bar, its connected mode different with conventional method it be to match with core bar external surface bullet groove by top connection inner surface bullet groove, form the whole ball groove of an annular, aim at hole that is slightly larger than billiards diameter of pellet shot from a slingshot traverse drill on its inner surface at the top connection external surface, by this hole pellet shot from a slingshot is filled the whole ball groove of annular again, then the hole in the top connection is shut, only bear stretching and compression load being connected between top connection here and the core bar and do not bear the rotation torque load.The normal condition lower sucker rod is threaded by the forward at its two ends, when sucker rod is subjected to fluctuating load at work and produces the reverse rotation moment of torsion, to produce relative rotary motion between the top connection of this device and the core bar, thereby eliminated the sucker rod connecting thread and be subjected to the effect of reverse rotation moment of torsion, thereby reached the purpose that prevents that sucker rod from getting loose.

Of the present utility modelly increase oily purpose and be achieved in that separation preventing increases oily centralizer by buoyancy body, core bar and centralizer body are formed, the lower end of buoyancy body and the upper end of centralizer body have boss and groove along axis direction respectively, this device is connected between two sucker rods by top connection and lower contact, the groove that the boss of buoyancy body lower end enters centralizer body upper end when sucker rod is up forms a piston body, make this device in oil pipe, form the space of relative closure up and down, up with sucker rod, thus this install above liquid by on carry and increased the output liquid measure and reach the purpose that increases oil.When sucker rod was descending, buoyancy body was moved under the effect of oil stream, and the boss on it leaves the groove of centralizer body, and liquid stream enters the inner annular space in its upper end flows to this device again through the groove of buoyancy body external surface upper end by the groove of centralizer body external surface.

Description of drawings

Fig. 1 is a structure principle chart of the present utility model.

Fig. 2 is the structure principle chart of the another kind of duty of the utility model.

Fig. 3 is the B-B sectional drawing of Fig. 1.

Fig. 4 is A-A and the C-C sectional drawing of Fig. 1.

Fig. 5 is the structural representation of buoyancy body.

Among the figure 1, top connection, 2, pellet shot from a slingshot, 3.1, top connection inner surface bullet groove, 3.2, core bar inner surface bullet groove, 4, core bar, 5, buoyancy body, 6, centralizer body, 7 lower contacts, a, centralizer body intracavity liquid circulation road, b, buoyancy body intracavity liquid circulation road, c, buoyancy body outer liquid chute.

The specific embodiment:

Separation preventing increases oily centralizer, comprises parts such as top connection 1, pellet shot from a slingshot 2, bullet groove 3.1 and 3.2, core bar 4, buoyancy body 5, centralizer body 6, and its top connection 1 is connected with bullet groove 3.2 by pellet shot from a slingshot 2 and bullet groove 3.1 with core bar 4.Buoyancy body 5 and centralizer body 6 are connected with 4 groove fit by 4 boss separately.Leave as sucker rod the annular space of oil flow channel when descending between the upper end heart portion of centralizer body 6 and the core bar 4.

The utility model is made up of top connection 1, pellet shot from a slingshot 2, top connection inner surface bullet groove 3.1, core bar external surface bullet groove 3.2, core bar 4, buoyancy body 5, centralizer body 6, lower contact 7 etc.

Top connection 1 is connected by the bullet groove 3.1 of its inner surface and the bullet groove 3.2 usefulness pellets shot from a slingshot 2 of core bar 4 external surfaces, concrete connected mode: the bullet groove 3.1 of aiming at its inner surface at top connection 1 external surface is bored a slightly larger in diameter in the hole of pellet shot from a slingshot 2 diameters, by this hole pellet shot from a slingshot is filled bullet groove 3.1 and the annular ball groove that bullet groove 3.2 matches and forms, at last the hole is shut.Top connection here 1 stretches or compression load with only bearing being connected of core bar 4, all rely on right-handed thread to interconnect between the normal condition lower sucker rod, when sucker rod be subjected to fluctuating load or other reasons and when producing the reverse rotation moment of torsion top connection 1 will relatively rotate with core bar 4 thereupon, thereby eliminated the shackle moment of torsion that the reverse rotation moment of torsion forms sucker rod right-hand thread connecting thread, effectively prevented the get loose generation of phenomenon of sucker rod.

In addition, buoyancy body 5 moves down along core bar 4 axis when carrying on the sucker rod, four boss of its lower end enter in four identical with it grooves of centralizer body 5 upper ends, at this moment buoyancy body 5 forms a piston body with the bound fraction of centralizer body 6, has played and promotes the purpose that liquid just increases oil with carrying this device on sucker rod is in oil pipe.

Fig. 2 has expressed the action principle of this utility model when sucker rod moves down, buoyancy body 5 moves up under the effect of relative flow stream and separates with centralizer body 6 when sucker rod moves down, at this moment liquid stream enters its intracavity liquid circulation road a by the groove of setting upright 6 external surfaces and arrives buoyancy body intracavity liquid circulation road b then, flows to the upper end of this device again through buoyancy body outer liquid chute c.

Claims

1, a kind of separation preventing increases oily centralizer, comprise that part such as top connection (1), pellet shot from a slingshot (2), bullet groove (3.1) (3.2), core bar (4), buoyancy body (5), centralizer body (6) constitutes, and is characterized in that: its top connection (1) and core bar (4) are connected by pellet shot from a slingshot (2) and bullet groove (3.1), bullet groove (3.2).

2, separation preventing according to claim 1 increases oily centralizer, it is characterized in that: buoyancy body (5) and centralizer body (6) are connected with 4 groove fit by 4 boss separately.

3, separation preventing according to claim 1 increases oily centralizer, it is characterized in that: the annular space that leaves as sucker rod oil flow channel when descending between the upper end heart portion of centralizer body (6) and the core bar (4).