CN2236557Y

CN2236557Y - Fluid increasing well pump

Info

Publication number: CN2236557Y
Application number: CN 95217819
Authority: CN
Inventors: 黄序韬
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-31
Filing date: 1995-07-31
Publication date: 1996-10-02
Anticipated expiration: 2005-07-31

Abstract

The utility model relates to an oil pumping device for yield increase. The lower portion of a tubular pump is connected with a liquid increase pump with a device of mechanical energy discharging and charging in series to form a fluid increase deep well pump. The deep well pump can obtain more than 25 to 40% over stroke under the conditions that the fluid increase deep well pump does not change the operating parameters and the pump diameter of the deep well pump and is not additionally provided with the power consumption of a ground device. The pressure of an oil tube post stored in the device of mechanical energy charging and discharging with an elastic energy form in a lower stroke is released before the end of an upper stroke. The crude oil extra arranged in the liquid increase pump is replenished and pressed into the deep well pump. The actual oil feeding quantity of the deep well pump is improved. The maximum pump feeding depth of the fluid increase deep well pump can exceed 2500 meters.

Description

Increase the liquid deep-well pump

The utility model relates to a kind of oil pumping yield-increasing apparatus, and it can not change under the situation of deep-well pump pump footpath and working system, improves the actual oil inlet quantity and the pump efficiency of deep-well pump greatly.

Because the influence of factors such as loss of plunger stroke, leakage and gases affect, the average pump efficiency of pumping well does not generally all surpass 50% at present, around improving pump efficiency, the scene has been promoted the use of some and has been improved the device of pump efficiency, one of them is the various supercharging oil-feed devices of deep-well pump, as the suction energy compensating device of tubing pump, bar jet suction booster etc. is arranged.These devices have received that all supercharging increases the positive effect that oil improves pump efficiency, applied hundreds of mouth well at the scene, become a kind of effective volume increase means, but Xian Chang actual demand relatively, the popularization degree that reaches at present is still very low, remove outside the non-technical reason, prior art itself also exists some to influence the problem of its large-scale promotion application, for example existing deep-well pump supercharging device is unsuitable for surpassing 2000 meters take out deeply under the operating mode in pump setting depth basically and uses, yet deep-well pump is exactly to take out the loss of operating mode down stroke deeply, leakage, the influence of various factorss such as gas is the most serious, pump efficiency is also minimum, need most the means that improve pump efficiency, secondly, also directly do not increase considerably the device of oil inlet quantity in the prior art.

At above-mentioned existing problems, must design a kind ofly in any degree of depth, particularly under dark stripping spare, all can make deep-well pump directly increase the device of oil inlet quantity, the purpose of this utility model that Here it is significantly.

The purpose of this utility model is to realize like this; 1 liquid pump that increases that has mechanical energy charging discharging device of serial connection below tubing pump, increase and fixedly mounted the high pressure sealing pipe that 1 roots and tops is shut in the liquid pump, the piston rod that stretches out in the pipe is pressed on the valve bonnet that increases liquid pump plunger top travelling valve, plunger mat is on the cluster spring of mechanical energy charging discharging device, making the fluid communication in deep-well pump and the high pressure sealing pipe is same pressure system, when the deep-well pump down stroke, because the isolation of closing of deep-well pump standing valve is arranged, deep-well pump with increase liquid pump be respectively the height two pressure systems, increase high pressure sealing pipe in the liquid pump pump chamber and be fixed on low pressure, because the isolation of piston rod is arranged, still two different pressure systems of height inside and outside the high pressure sealing pipe, when the deep-well pump down stroke begins, pressure in deep-well pump and the high pressure sealing pipe all increases gradually, the piston rod that drives in the high pressure sealing pipe is descending, the plunger that increases liquid pump is also being pressed descending, increase the liquid pump oil-feed, spring below the plunger just is compressed energy storage simultaneously, can convert the oil pipe head of liquid in the deep-well pump to the elastic mechanical energy, when the deep-well pump upstroke, when the deep-well pump internal pressure descends, plunger is up to when abdicating the outlet of deep-well pump and high pressure sealing tube passage, is stored in plunger that elastic mechanical in the mechanical energy charging discharging device can just promote to increase liquid pump pump Central Plains oil pressure is gone in the deep-well pump above it.The increase of the utility model pump oil mass under the constant situation in the strokes per minute of deep-well pump stroke and pump footpath be by the deep-well pump down stroke is carried out twice " amplifications " realization when down stroke begins, the liquid volume of the descending discharge of deep-well pump plunger equals to enter the liquid volume in the high pressure sealing pipe, utilize the design caliber of high pressure sealing pipe directly more much smaller than deep-well pump pump, like this, it is just much bigger than the down stroke of deep-well pump that the down stroke of piston rod promptly increases the oil-feed stroke of liquid pump in the high pressure sealing pipe that obtains, Here it is once amplifies, make the design pump that increases liquid pump directly greater than the pump footpath of deep-well pump again, Here it is, and secondary amplifies.A certain position before the deep-well pump plunger is up to the upstroke end, the elastic mechanical that is stored in the mechanical energy charging discharging device can will increase the crude oil that advances through twice amplification in the liquid pump be all compressed into the deep-well pump of underfill still more, the basic principle of the utility model increases pump liquid measure that Here it is.

The utility model can make deep-well pump obtain super stroke more than 25-40% under the constant situation of pumping well working system, feed liquor amount more than 55-75% is to enter in the pump under not consuming heavy situation of establishing pressure, and the feed liquor mode of this and conventional deep-well pump is essentially different; The benefit that it brings is: 1. the feed liquor amount that increases liquid deep-well pump 55-75% has been saved well liquid has been given rise to this layer energy partially of well fluid level height from the oil reservoir middle part, in oil recovery process, this part energy consumption accounts for the very big proportion that whole oil recovery process stratum energy consumes, therefore, employing increases the liquid pump oil pumping, under the identical situation of other condition, can improve recovery rate greatly.2. because to increase the most of feed liquor amount of liquid pump be the mode of bailing under the constant low-pressure state of pressure feed liquor, so, it is not only just irrelevant with well fluid level to increase the liquid pump feed liquor, gas lock also can not occur now looks like, this makes that increasing liquid pump is particularly suitable for hyposmosis, and the oil well of low liquid level also is suitable for the higher oil well of gas liquid ratio, 3. increase liquid pump and be particularly suitable for taking out deeply well, increase that the pump degree of depth can be above 2500 meters under the maximum of liquid pump.

Below in conjunction with description of drawings the purpose of this utility model implementation procedure.

Fig. 1 is that the deep-well pump down stroke begins, increases liquid pump energy storage oil-feed schematic representation.

Fig. 2 increases the oil-feed of liquid pump energy storage to finish, and deep-well pump continues the down stroke schematic representation.

Fig. 3 is that the deep-well pump upstroke begins oil-feed, increases liquid pump and keeps the energy storage view.

Fig. 4 is that deep-well pump continues upstroke, increases liquid pump and releases and can replenish the oil-feed schematic representation to deep-well pump.

As shown in Figure 1: 1. deep-well pump plunger, 2. travelling valve 3. outer working tubes 4. deep-well pump pump barrels 5. reducer fittings 6. standing valves 7. increase liquid pump tube 8. high pressure sealing pipes under the deep-well pump plunger, 9. go up, following thread form groove fixed tube, 10. piston rod 11. increases the liquid pump travelling valve, and 12. increase the liquid pump plunger, 13. spring, 14 mechanical energy charging discharging device urceolus, equalizing orifice on 15., 16. times equalizing orifices

As shown in Figure 1: increase liquid pump 7 by reducer fitting 5 connections in deep-well pump 4 lower ends, connect another patent that mechanical energy charging discharging device one the present utility model people obtains in the lower end that increases liquid pump 7, the patent No. is ZL93205812.4, have equalizing orifice 15 on the top of deep-well pump pump barrel 4, the solid hermetic unit of thread form groove fixed tube 9 has equalizing orifice 16 down on increasing between liquid pump tube 7 and the high pressure sealing pipe 8, deep-well pump barrel 4 is sealed in the tube with outer working tube 3 with the top that increases liquid pump tube 7 again, like this, in the up-down stroke of deep-well pump, as long as deep-well pump plunger 1 has got out of the way the last equalizing orifice 15 on deep-well pump barrel 4 tops, liquid in the deep-well pump pump barrel is just by last, following equalizing orifice reaches annular pass that constitutes with outer working tube 3 and the liquid maintenance hydraulic communication that is fixed in the high pressure sealing pipe that increases in the liquid pump, be to be communicated with when deep-well pump plunger 1 down stroke with oil pipe head of liquid high-pressure hydraulic, when the deep-well pump upstroke be and tubing and casing annular space head of liquid low pressure hydraulic communication, as shown in Figure 1, high pressure sealing pipe 8 is fixed on by two thread form groove fixed tube 9 up and down and increases in the liquid pump tube 7, on the cylinder of all gardens, 3/4 garden of thread form groove fixed tube 9, be milled with several roads thread form groove, well liquid can be compressed into deep-well pump by these thread form groove passages and the standing valve of opening when making upstroke, and last thread form groove fixed tube 1/4 garden week the garden cylinder solid hermetic unit have the following equalizing orifice 16 of linking up annular pass and high pressure sealing pipe.Below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 further specify working procedure of the present utility model;

Fig. 1 is that the deep-well pump down stroke begins, increase liquid pump energy storage oil-feed schematic representation, as shown in the figure, after 1 beginning of deep-well pump plunger is descending, the deep-well pump internal pressure rises gradually, design makes plunger 1 before the exit position of equalizing orifice in the no show 15, the pump internal pressure has risen to and has equaled tubing string pressure, what is to keep the pressure in the high pressure sealing pipe 8 in the liquid pump tube 7 of increasing of hydraulic communication also to rise to gradually and equal tubing string pressure with deep-well pump, and this power is passed to the plunger 12 that increases liquid pump by piston rod 10, and making that to increase the liquid pump plunger descending, what is, spring 13 in the mechanical energy charging discharging device 14 just is compressed energy storage, increases the liquid pump oil-feed simultaneously.Establish pressure and rise to tubing string pressure by annular space is heavy in the high pressure sealing pipe 8, this section stroke that piston rod 10 is walked downwards is exactly the energy storage oil-feed stroke that increases liquid pump.

Fig. 2 increases the oil-feed of liquid pump energy storage to finish, and the deep-well pump plunger continues the down stroke schematic representation of descending beginning oil extraction.At this moment, increase liquid pump plunger 12 and be in lower dead point position, because the pressure of spraining in the high pressure sealing pipe 8 equals tubing string pressure, so the energy storage spring 13 in the mechanical energy charging discharging device 14 has also been stored the energy of corresponding liquid column hydrostatic pressure, at this moment deep-well pump plunger 1 continues descending, its wander up and down valve has all been opened, and the crude oil in the deep-well pump pump barrel enters in the oil pipe by hollow plunger.

Fig. 3 is that the deep-well pump upstroke begins oil-feed, increase liquid pump and keep the energy storage view, at this moment deep-well pump plunger 1 beginning is up, pressure in the deep-well pump pump barrel 4 sharply descends, equal tubing and casing annular space head of liquid and when continue descending when dropping to, standing valve 6 has all been opened with the travelling valve 11 that increases liquid pump, well liquid enters the deep-well pump plunger 1 up space of abdicating under the driving of tubing and casing annular space head of liquid, but because deep-well pump plunger 1 no show still and get out of the way the outlet of the last equalizing orifice 15 on pump barrel top, therefore, increase liquid in the high pressure sealing pipe 8 in the liquid pump tubing string pressure of still spraining, so increase the extreme lower position that liquid pump plunger 12 still is in lower dead centre, the elastic mechanical of storing in the mechanical energy charging discharging device still end obtains to discharge.

Fig. 4 is that the deep-well pump upstroke closes to an end, increase liquid pump replenishes schematic representation from oil-feed to deep-well pump, at this moment deep-well pump plunger 1 has been covered 2/3rds upstroke and has been got out of the way the outlet of last equalizing orifice 15, since in the deep-well pump pump barrel 4 this moment still for tubing and casing annular space low pressure and with outer working tube 3 and high pressure sealing pipe 8 in the tubing string high pressure of spraining link up, high-pressure well liquid in the outer working tube flows to the pump barrel 4 that is in low pressure rapidly, what is, lost balance by spring 13 piston rod 10 that heads on and the pressure that increase rapid reduction in liquid pump plunger 12 and the high pressure sealing pipe 8, be stored in distortion mechanical energy in the spring 13 and just head on that to increase liquid pump plunger 12 up rapidly, increasing liquid pump travelling valve 11 closes, the crude oil well liquid that advances through twice " amplification " in the pump is all replenished more the deep-well pump pump barrel 4 of compressing into underfill still, for example pump directly is 38 millimeters a deep-well pump, when stroke is 2.1-3 meters, when the Theoretical flowing capacity of every stroke was 2.4-3.4 liter well liquid, every stroke can multiple pressure advances 42-60% well liquid and enters in the deep-well pump.This has just realized main purpose of the present utility model; Constant at running parameter, and do not increase the actual oil inlet quantity that improves deep-well pump under the situation of power consumption greatly, improve the pump efficiency of present deep-well pump greatly.

Claims

1. the usefulness of pumping increases the liquid deep-well pump, it is characterized in that it is by 1 liquid pump that increases that has mechanical energy charging discharging device of tubewell pump serial connection, with the deep-well pump that is cascaded with increase liquid-pump seal and be installed in the outer working tube, in increasing liquid pump, fixedly mounted the high pressure sealing pipe that 1 roots and tops is shut, the piston rod that stretches out in the pipe is pressed on the valve bonnet that increases liquid pump plunger top travelling valve, increase the liquid pump plunger again the seat on the spring of mechanical energy charging discharging device, bored equalizing orifice up and down respectively on deep-well pump top and the sealing contact segment that increases liquid pump and high pressure sealing pipe, made liquid in deep-well pump and the high pressure sealing pipe through the interior annular pass formation hydraulic communication of equalizing orifice and outer working tube up and down.

According to claim 1 alleged increase the liquid deep-well pump, it is characterized in that increasing liquid pump connects with deep-well pump by reducer fitting, increase the pump footpath of the pump footpath of liquid pump greater than deep-well pump, increase in the liquid pump with two thread form groove fixed tube up and down and fixedly mounted the high pressure sealing pipe that 1 roots and tops is shut, the caliber of high pressure sealing pipe is less than the pump footpath of deep-well pump.Last thread form groove fixed tube with it in increasing of contacting of external sealed be drilled with equalizing orifice down on liquid pump tube and the high pressure sealing pipe.

According to claim 1 alleged increase the liquid deep-well pump, it is characterized in that: below increasing liquid pump, with silk with connected mechanical energy charging discharging device, increase on the spring of the free seat of plunger in mechanical energy charging discharging device in the liquid pump.

According to claim 1 alleged increase the liquid deep-well pump, it is characterized in that: shut on high pressure sealing pipe top, 1 solid garden piston rod that degree of finish is very high is arranged in the pipe, piston rod and high pressure sealing pipe keep being slidingly matched by clearance seal and with high-voltage tube, outside the protruded tube of piston rod bottom, free seat is on the valve bonnet that increases liquid pump plunger top travelling valve.

According to claim 1 alleged increase the liquid deep-well pump, it is characterized in that: thread form groove fixed tube is that heavy wall pipe, its thickness that screw thread is all arranged inside and outside 1 equals to increase the annular space thickness between liquid pump pump barrel and the high pressure sealing pipe, on the thread form groove fixed tube garden cylinder in 3/4 garden week, axially be milled with several roads square tooth form groove, and the solid hermetic unit of all gardens cylinder has the following equalizing orifice of linking up outer working tube annular pass and high pressure sealing pipe in last thread form groove fixed tube 1/4 garden.