CN2553106Y

CN2553106Y - Water nozzle valve for separate injection well of oil field

Info

Publication number: CN2553106Y
Application number: CN 02202324
Authority: CN
Inventors: 孙光胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-10
Filing date: 2002-01-10
Publication date: 2003-05-28
Anticipated expiration: 2012-01-10

Abstract

The utility model relates to a casting-free and fishing-free water cock shutoff device, belonging to the technical field of shutoff device used in separated water injection wells in oil fields, which obtains the effect that: when an auxiliary plugger completes the seat seal of a packer without moving the plugger, the normal on-off of the water injection in separate layer water injection wells can still be realized. The utility model comprises an outer casing 1, a spring 2, a piston 3, a slide bar 4, a slideway bracket 5 and a temporary stabilizing rod 6; and is mainly used in separated injection wells. The utility model has the advantages of smaller workload of operations in oil fields as well as lower operation costs, simple structure and easy machining, and is therefore suitable to wells of extensive depths.

Description

Pulling and running-free water mouth switch

A kind of pulling and running-free water mouth switch relates generally to the switching technique field in the separate injection well of oil field affusion.

The dispensing well of present waterflooding oil field, after finishing the eccentric water distribution pipe column operation, the common method of packer set has two kinds to be: a kind of is to put the stagnant water mouth in eccentric injection mandrel in advance, finishing seat when packer is honored as a queen and utilizes throw in catcher to trip out the water nozzle that the stagnant water mouth is changed to be needed again, this practice had both increased work operations amount and operating cost, may bring contingency again; A kind of is to utilize stick shutoff water nozzle, both in blanking plug, placed liquefiable adhesion-blocker shutoff water nozzle in advance, before not dissolving, finishes adhesion-blocker the seat envelope of packer after the operation, recover normal dispensing again after dissolving fully Deng adhesion-blocker, though can reduce the oil field operation workload like this, but, be difficult to the accurately predicting solution time and resume production in advance, thereby influence field produces because the adhesion-blocker melting speed is subjected to multiple factor affecting such as water temperature, water quality, surface oil pollution.Therefore, how designing the casting and dragging free device that not only reduces the field operations amount but also do not influence field produces becomes oil field dispensing work and is badly in need of the major issue that solves.

The purpose of this utility model is exactly to overcome the deficiencies in the prior art part and a kind of oil field operation amount and operating expenses of can reducing is provided, and recovers a kind of pulling and running-free water mouth switch that well is produced simultaneously again rapidly.

The utility model compared with prior art has the following advantages:

1, can reduce the oil field operation workload, reduce operating cost;

2, simple in structure, be easy to process and be fit to the use of any degree of depth well;

3, avoid unnecessary accident, reduce the influence of operation simultaneously field produces.

The purpose of this utility model can reach by following measure:

It is made up of parts such as shell body, spring, piston, slide bar, slideway shelf, interim righting rods.

Its medi-spring is put into shell body, and interim righting rod is connected on and is embedded in location in the slideway shelf on the piston together, slide bar is screwed on the piston again, is fixed on the track of slideway shelf slideway shelf and shell body screwed connection.

Slideway shelf is that wherein the sawtooth pattern track is made up of three bottom dead centres and two top dead-centres by two sawtooth pattern track groups one-tenth of symmetry, and the restriction slide bar moves by the track of design, is having circle in close sawtooth pattern track top dead-centre limit portion and is intaking empty.

Can also have the intake chamber of other shapes in the limit portion of slideway shelf sawtooth pattern track.

Interim righting rod also can remove.

Fig. 1 is the pulling and running-free water mouth switch structural representation;

Fig. 2 is slideway shelf 5 planar development schematic diagrames.

Below in conjunction with accompanying drawing the utility model is described in further detail:

It is made up of parts such as shell body 1, spring 2, piston 3, slide bar 4, slideway shelf 5, interim righting rods 6.

Its medi-spring 2 is put into shell body 1, and interim righting rod 6 is connected on and is embedded in location in the slideway shelf 5 on the piston 3 together, slide bar 4 is screwed on the piston 3 again, is fixed on the track of slideway shelf 5, and slideway shelf 5 is used screwed connection with shell body 1.

Slideway shelf 5 is that wherein the sawtooth pattern track is made up of I, III, three bottom dead centres of V and two top dead-centre II, IV by two sawtooth pattern track groups one-tenth of symmetry, and restriction slide bar 4 moves by the track of design, thereby guarantees pulling and running-free water mouth switch energy smooth opening; Having circular water inlet sky near sawtooth pattern track top dead-centre limit portion, it is smooth and easy to guarantee that pulling and running-free water mouth switch is opened the back intake tunnel.

Can also have the intake chamber of other shapes in the limit portion of slideway shelf 5 sawtooth pattern tracks.

Interim righting rod 6 also can remove.

During on-the-spot the use, at first pulling and running-free water mouth switch is connected on to be installed on the blanking plug in the injection well downhole flow regulator and together arrives the target zone position down with water injection string, wellhead receptacle is honored as a queen, by twice waterpower pressurization of oil pipe, after rushing down pressure, pulling and running-free water mouth switch can be opened automatically, recover the normal water filling of well, wherein once pressurization is to test the requirement of envelope in order to adapt to the oil field operation tubing string, slide bar 4 on the fixed piston 3 is moved to the position II of slideway along chute by position I under the effect of hydraulic pressure with piston 3 at this moment, press back piston 3 to make slide bar 4 move to position III by position II under the elastic force effect when oil pipe rushes down, this moment, piston 3 still sealed waterflood path; Piston 3 drives slide bar 4 and moves to position IV along slideway by position III when pressurizeing for the second time, afterwards when oil pipe rushes down pressure once more, piston 3 moves to V in the position that makes the slide bar 4 that is fixed on the piston 3 under the effect of elastic force by IV, piston 3 entered in the cavity of slideway shelf 5 and got out of the way waterflood path this moment, when oil pipe once more during pressure water injection, because piston 3 top and bottom loads are identical to be in the stress balance state substantially, thereby does not influence normal water filling.

If Ground Operation can guarantee pipeline and connect once sealing, pulling and running-free water mouth switch also can be placed on III place, position with slide bar 4 in advance when assembling so, this moment, the slide bar on the piston 34 when oil pipe pressurizes moved to position IV by position III, subsequently when oil pipe rushes down pressure, piston 3 moves to position V at the effect lower edge of elastic force chute by position IV, piston 3 entered in the cavity of slideway shelf 5 and got out of the way waterflood path this moment, when oil pipe once more during pressure water injection, because piston 3 top and bottom loads are identical, make piston 3 be in the stress balance state, thereby do not influence normal water filling.

Claims

1, a kind of pulling and running-free water mouth switch, it is made up of shell body (1), spring (2), piston (3), and spring (2) is put into shell body (1), it is characterized in that: it also is made up of slide bar (4), slideway shelf (5), interim righting rod parts such as (6);

Wherein interim righting rod (6) is connected on and is embedded in location in the slideway shelf (5) on the piston (3) together, slide bar (4) is screwed on the piston (3) again, is fixed on the track of slideway shelf (5), and slideway shelf (5) is used screwed connection with shell body (1);

Slideway shelf (5) is two sawtooth pattern track groups one-tenth by symmetry, wherein the sawtooth pattern track is made up of (I), (III), (V) three bottom dead centres and two top dead-centres (II), (IV), restriction slide bar (4) moves by the track of design, and circular water inlet is empty having near sawtooth pattern track top dead-centre limit portion.

2, pulling and running-free water mouth switch according to claim 1, its feature also is: the intake chamber that can also have other shapes in the limit portion of slideway shelf (5) sawtooth pattern track.

3, pulling and running-free water mouth switch according to claim 1, its feature also is: interim righting rod (6) also can remove.