CN207686946U - It forces valve type point to be taken out and mixes out oil well pump - Google Patents

Abstract

The utility model is related to force valve type point to be taken out to mix out oil well pump, the big pump in top is mainly made of long pump barrel, short-plunger, central tube, upper cross under, upper delivery valve, Forced Valve, annular valve ball, ring-shaped valve seats, movable pump barrel, oil inlet box cupling, is mechanical forced open-close type structure；The small pump in lower part is mainly made of long-plunger, short pump barrel, lower cross under, lower part oil pipe, lower delivery valve, inlet valve, is long-plunger short pump barrel structure.Upper and lower pump works at the same time, upper pump is formed by annular pump chamber using upper and lower diameter of plunger difference and works, oil well upper layer crude oil enters through oil inlet box cupling in upper pump pump chamber, it is discharged again by Forced Valve, lower layer's crude oil enters through inlet valve in lower pump, is then discharged through delivery valve, and last upper and lower Crude Oil converges on short-plunger top, enter in the oil pipe of oil well pump top together and be discharged outside well, which has the characteristics that pump efficiency high, anti-holddown, bearing capacity by force and good reliability.

Description

It forces valve type point to be taken out and mixes out oil well pump

Technical field

The utility model designs a kind of special tubing pump for multiple-zone well pumping crude oil in oil field, it can be eliminated Appropriateness exploitation high pressure, Thief zone oil are realized in the interlayer interference because caused by pressure, water content, permeability etc. are different between each oil reservoir Layer, while low pressure, the purpose of low permeability pay productive potentialities are given full play to again, belong to oil well pump apparatus field.

Background technology

Currently, oil field at home is multilayer system there are many oil well, the physical difference of heterogeneous construction, each oil reservoir is larger, production Ability is also different, and in commingling production, interlayer interferes with each other, and high pressure zone suppresses low pressure layer, inhibits the production capacity of low pressure layer, Sometimes even there is the problem of high pressure zone is to low pressure layer " pouring in down a chimney ", oil well recovery ratio has been seriously affected, in order to make each layer of oil well all It can play a role, frequently with the method for separate zone production, but existing point of pumping mixes out pump and still have many deficiencies, main to show ：

（1）The upper oil pump inlet valve that routinely point pumping mixes out pump is equally distributed several by an eccentric big ball valve or circumferential direction Small ball forms, and when ball valve big using a bias, oil well pump appearance and size can be made larger, it is difficult to conditional in tubing size Used in oil well, when small ball equally distributed using several circumferential directions, in the case where oil well pump appearance and size is constant, on pump into The valve ball size of fuel tap is accordingly smaller, catching phenomenon easily occurs, once one group of ball valve fails at work, will cause whole A pump failure.

（2）Chinese patent application 200920309188.2《One kind point takes out and mixes out oil well pump》Upper oil pump inlet valve is moved into lower pump Lower end increases inlet valve bulb diameter, causes pump chamber clearance too big although inlet valve size can be made not limited by pump diameter, Cause pumping efficiency of oil pump low, or even gas lock to occur not fuel-displaced.

Utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, a kind of pressure valve type point is provided takes out and mix out pump, do not increasing pumping Under conditions of oil pump appearance and size, both make oil pump inlet valve size increase thereon, and increased runner, and avoids the occurrence of clamping stagnation, and in reduction Pump chamber clearance improves pump efficiency.

In order to solve the above-mentioned technical problem, the utility model proposes following technical schemes：It forces valve type point to be taken out and mixes out oil pumping Pump, is made of pump barrel assembly and assembly for plunger two parts；

The pump barrel assembly includes upper box cupling, and the bottom of the upper box cupling is connected with cross under, the upper cross under Inside is equipped with long pump barrel by upper centering ring, ring-shaped valve seats and support ring is also equipped with inside the upper cross under, in upper mistake The bottom end of bridge tube is connected with oil inlet box cupling, and the end of the oil inlet box cupling is connected with lower cross under, in the lower cross under Portion is equipped with short pump barrel by lower centering ring, and the end of the lower cross under is connected with lower part oil inlet pipe, the lower part oil inlet pipe End be connected with lower box cupling, inlet valve is installed inside the lower part oil inlet pipe；

The assembly for plunger is made of upper delivery valve, short-plunger, central tube, Forced Valve, long-plunger and lower delivery valve；Institute Forced Valve is stated to be made of with the ring-shaped valve seats for being fixed on short-plunger lower end the annular valve ball being fixed on central tube；The short-plunger Top is connected with guide sleeve, and short-plunger can be made to do short distance on central tube and slidably reciprocated；The Forced Valve exists with short-plunger It is opened and closed with respect to sliding on central tube.

The annular valve ball is fixed on movable pump barrel, and the activity pump barrel is slidably installed on long-plunger, and leads to It crosses and does short distance and pump, annular plate valve is made to open and close.

The oil inlet box cupling circumference is machined with fuel feed hole, and top Crude Oil enters through fuel feed hole in oil inlet box cupling, then leads to Annular plate valve is crossed to enter in the big pump pump chamber in top.

Lower cross under outside the short pump barrel forms the small pump pump chamber in lower part with lower part oil pipe and inlet valve, and bottom oil layer is former Oil enters through inlet valve in the small pump pump chamber in lower part.

The long pump barrel, short-plunger, central tube, upper cross under, upper delivery valve, Forced Valve, annular valve ball, ring-shaped valve seats, Movable pump barrel and oil inlet box cupling constitute the big pump in top, form mechanical forced open-close type structure；

The long-plunger, short pump barrel, lower cross under, lower part oil pipe, lower delivery valve and inlet valve constitute the small pump in lower part, are formed Long-plunger short pump barrel structure.

Compared with existing airlock-resistant oil pump, the utility model has following advantageous effect：

1, the high-efficiency layered mining operations of oil well are realized under the conditions of not increasing oil well pump appearance and size, it is big by top The tandem compound of pump, small two pump of pump in lower part, coordinates the use of tail pipe and packer, realizes pumping and draw upper layer crude oil, lower pump Pumping lower layer crude oil.

2, upper oil pump inlet valve is designed using ring valve and is mounted between pump and lower pump, both increases oil pump inlet valve size Add, increase runner, reduce the oil inlet defective valve caused by clamping stagnation, and reduce pump clearance, improves pump efficiency.

3, cross under is devised outside upper and lower pump barrel, makes being carried from heavy load and packer setting for tail pipe and packer Lotus all acts on cross under, and the not managed column load of upper and lower pump barrel avoids pump barrel and deforms holddown because stand under load is excessive Phenomenon.

4, for upper plunger using valve arrangement is forced, avoid causes assembly for plunger in pump barrel because of upper and lower pump barrel decentraction There is eccentric wear holddown phenomenon in interior " suppressing strength ".

5, since upper pump is using valve arrangement is forced, lower pump uses long-plunger short pump barrel structure, so this pump has sands-proof check Function.

6, since upper and lower Crude Oil is flowed into tail portion along respective runner in the middle part of oil well pump respectively, and in oil well pump Top merges together, and crude oil, each other without any interference, improves oil well pump reliability when by two runners of oil well pump.

7, it is simple that well, lower well operations are played, it is time saving and energy saving, it improves work efficiency.

In conclusion the utility model has the characteristics that pump efficiency high, anti-holddown, bearing capacity be strong and good reliability, it is applicable in In the oil extraction of multiple-zone well.

Description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is the utility model main sectional view.

In figure：Delivery valve on 1,2 short-plungers, 3 central tubes, semi-finals valve, 5 long-plungers, 6 times delivery valves, box cupling on 7, on 8 Centering ring, 9 long pump barrels, cross under, 11 annular valve balls, 12 ring-shaped valve seats, 13 movable pump barrels, 14 support rings, 15 oil inlets connect on 10 Hoop, 16 short pump barrels, 17 times cross unders, 18 times centering rings, 19 lower part oil pipes, 20 inlet valves, 21 times box cuplings.

Specific implementation mode

The embodiment of the utility model is described further below in conjunction with the accompanying drawings.

Such as Fig. 1, force valve type point to be taken out and mix out oil well pump, it is made of pump barrel assembly and assembly for plunger two parts；The pump Cylinder assembly includes upper box cupling 7, and the bottom of the upper box cupling 7 is connected with cross under 10, and the inside of the upper cross under 10 passes through Upper centering ring 8 is equipped with long pump barrel 9, ring-shaped valve seats 12 and support ring 14 is also equipped with inside the upper cross under 10, in upper mistake The bottom end of bridge tube 10 is connected with oil inlet box cupling 15, and the end of the oil inlet box cupling 15 is connected with lower cross under 17, under described Short pump barrel 16 is equipped with by lower centering ring 18 inside cross under 17, the end of the lower cross under 17 is connected with lower part oil inlet pipe 19, the end of the lower part oil inlet pipe 19 is connected with lower box cupling 21, and inlet valve 20 is equipped with inside the lower part oil inlet pipe 19.

Further, the assembly for plunger by upper delivery valve 1, short-plunger 2, central tube 3, Forced Valve 4, long-plunger 5 and under Delivery valve 6 forms；The Forced Valve 4 is by the annular valve ball that is fixed on central tube 3 and the annular plate valve for being fixed on 2 lower end of short-plunger Seat is constituted；2 top of the short-plunger is connected with guide sleeve, and short-plunger 2 can be made to do short distance on central tube 3 and slidably reciprocated；Institute Forced Valve 4 is stated as short-plunger 2 opens and closes on central tube 3 with respect to sliding.

Further, the annular valve ball 11 is fixed on movable pump barrel 13, and the activity pump barrel 13 is slidably installed It pumps on long-plunger 5, and by doing short distance, annular plate valve is made to open and close.

Further, 15 circumference of oil inlet box cupling is machined with fuel feed hole, and top Crude Oil enters oil inlet through fuel feed hole In box cupling 15, then entered in the big pump pump chamber in top by annular plate valve.

Further, the lower cross under 17 outside the short pump barrel 16 and lower part oil pipe 19 and the lower pump pump of the composition of inlet valve 20 Chamber, bottom oil layer crude oil enter through inlet valve 20 in the small pump pump chamber in lower part.

Further, the long pump barrel 9, short-plunger 2, central tube 3, upper cross under 10, upper delivery valve 1, Forced Valve 4, ring Shape valve ball 11, ring-shaped valve seats 12, movable pump barrel 13 and oil inlet box cupling 15 constitute the big pump in top, form mechanical forced open-close type knot Structure；

Further, the long-plunger 5, short pump barrel 16, lower cross under 17, lower part oil pipe 19, lower delivery valve 6 and inlet valve 20 constitute the small pump in lower part, form long-plunger short pump barrel structure.

The course of work and operation principle of the utility model：

By design position in oil well pump tripping in oil well, pump top connects oil pipe, and lower part connects tail pipe and packer, and packer is located at Between upper and lower oil reservoir, make upper and lower zonal isolation.

The upper end of assembly for plunger couples with sucker rod, and under the drive of sucker rod, assembly for plunger is completed in pump barrel assembly It pumps.

When up stroke, assembly for plunger uplink, upper and lower delivery valve and Forced Valve are closed, the annular pump chamber of upper pump and lower pump pump chamber Volume increases, and pressure declines, and inlet valve is opened under the effect of bottom oil layer pump intake pressure, and lower layer's crude oil enters lower pump through inlet valve In pump chamber, annular plate valve rubs between top oil reservoir oil pressure and long-plunger and short pump barrel and opens under force effect, and upper layer crude oil is through annular Valve enters in upper pump pump chamber.

When down stroke, assembly for plunger downlink, upper and lower pump chamber volume reduces, and pressure increases, and inlet valve is in its own gravity and oil It is closed under the action of hydraulic coupling, annular plate valve frictional force and oil liquid pressure between its own gravity, long-plunger and short pump barrel act on ShiShimonoseki It closes, while Forced Valve and upper and lower delivery valve are opened, upper and lower pump chamber Crude Oil is extruded at the same time out pump chamber and enters short-plunger top In oil pipe.

Through the above description, those skilled in the art completely can be without departing from this item utility model technological thought In the range of, it carries out various changes and amendments and is within the protection scope of the utility model.The utility model is not use up Matters belong to the common knowledge of those skilled in the art.

Claims (5)

1. forcing valve type point to be taken out mixes out oil well pump, it is characterised in that：It is to be made of pump barrel assembly and assembly for plunger two parts；

The pump barrel assembly includes upper box cupling（7）, the upper box cupling（7）Bottom be connected with cross under（10）, the upper mistake Bridge tube（10）Inside pass through upper centering ring（8）Long pump barrel is installed（9）, the upper cross under（10）Inside is also equipped with annular Valve seat（12）And support ring（14）, in upper cross under（10）Bottom end be connected with oil inlet box cupling（15）, the oil inlet box cupling （15）End be connected with lower cross under（17）, the lower cross under（17）Inside passes through lower centering ring（18）Short pump barrel is installed （16）, the lower cross under（17）End be connected with lower part oil inlet pipe（19）, the lower part oil inlet pipe（19）End connection There is lower box cupling（21）, the lower part oil inlet pipe（19）Inside is equipped with inlet valve（20）；

The assembly for plunger is by upper delivery valve（1）, short-plunger（2）, central tube（3）, Forced Valve（4）, long-plunger（5）Go out under and Fuel tap（6）Composition；The Forced Valve（4）By being fixed on central tube（3）On annular valve ball and be fixed on short-plunger（2）Lower end Ring-shaped valve seats is constituted；The short-plunger（2）Top is connected with guide sleeve, can make short-plunger（2）In central tube（3）On do short distance It slidably reciprocates；The Forced Valve（4）With short-plunger（2）In central tube（3）On opened and closed with respect to sliding.

2. forcing valve type point to be taken out according to claim 1 mixes out oil well pump, it is characterised in that：The annular valve ball（11）It is fixed In movable pump barrel（13）On, the activity pump barrel（13）It is slidably installed in long-plunger（5）On, and by doing short distance or more It moves back and forth, annular plate valve is made to open and close.

3. forcing valve type point to be taken out according to claim 1 mixes out oil well pump, it is characterised in that：The oil inlet box cupling（15）Circumference It is machined with fuel feed hole, top Crude Oil enters oil inlet box cupling through fuel feed hole（15）In, then the big pump in top entered by annular plate valve In pump chamber.

4. forcing valve type point to be taken out according to claim 1 mixes out oil well pump, it is characterised in that：The short pump barrel（16）External Lower cross under（17）With lower part oil pipe（19）And inlet valve（20）The small pump pump chamber in lower part is formed, bottom oil layer crude oil is through inlet valve （20）Into in the small pump pump chamber in lower part.

5. forcing valve type point to be taken out according to claim 1 mixes out oil well pump, it is characterised in that：The long pump barrel（9）, short-plunger （2）, central tube（3）, upper cross under（10）, upper delivery valve（1）, Forced Valve（4）, annular valve ball（11）, ring-shaped valve seats（12）, it is living Dynamic pump barrel（13）With oil inlet box cupling（15）The big pump in top is constituted, mechanical forced open-close type structure is formed；

The long-plunger（5）, short pump barrel（16）, lower cross under（17）, lower part oil pipe（19）, lower delivery valve（6）And inlet valve （20）The small pump in lower part is constituted, long-plunger short pump barrel structure is formed.