CN1111735A - WK splitter - Google Patents

Abstract

The thermal control flow spliter valve consists of valve case in which there are normal closed spring (thermal-sensitive spring), normal opened spring and hollow piston, the uppr part of which is the thermal-sensitive spring, the under part of which is the normal opened spring, in the piston under part bore there are magnetic core valve and valve ball fixed by the horseshoe spring pin. Its advantages are capable of measuring the dynamic fluid surface, less valve components, multifunctional component and simple processing technology, specially capable of logging the dynamic fluid surface of oil well after heated scrub.

Description

WK splitter

This practicality invention is on the basis that changes the repertoire that crucial accessory increases function of temperature control, increases a kind of up-to-date, the most practical shunt that can survey the producing fluid level function, it possesses the 92216312X patent on the basis of model utility 92216312X patent new function to be arranged.

Former shunt is a kind ofly oil reservoir to be produced the shunt that pollutes can improve the oil pumping working efficiency and avoid in the well-flushing flushing fluid time.

In the pumping well production process of routine, annular space between oil, the sleeve pipe opens wide, and the liquids and gases that exist in it can disturb the proper functioning of oil pump, the working efficiency of influence oil pumping, in the washing well process of lining, flushing fluid can produce back pressure and polluted reservoir to oil reservoir.

The purpose of former invention provides a kind of shunt, it and the supporting use of downhole packer, can improve the production status of oil well, help the gathering and the extraction of in-place oil, improve the oil pumping working efficiency, increase oil well output, improve the well-flushing situation of pumping well simultaneously, prevent the flushing fluid polluted reservoir, improve well-flushing efficient.

The purpose of former invention is this realization: the main body internal upper part that is connected with upper and lower joint is equipped with seat and flushing valve, and flushing valve top and main body constitute ring cavity, and this chamber is connected with well washing hole on the main body; Valve body lower portion connects bottom valve, and assembling magnetic core overflowing device and valve seat are equipped with valve ball between the two in the bottom valve body; The bottom is equipped with and is reconciled ring in the main body, and flushing valve is equipped with spring with the conciliation interannular.

Working principle: in the pumping well normal productive process, flushing valve withstands on the valve seat under the effect of spring, flushing valve is in closed condition, the valve ball of bottom valve breaks away from foot valve seat and moves up under the effect of well intracavity liquid pressure, by the absorption of the magnetic core overflowing device of top, bottom valve is to be in normally open in the oil well ordinary production.When oil well needs well-flushing, flushing fluid is from oil, and the annular space between the sleeve pipe enters in the well, because there is the existence of packet the pumping well bottom, the pressure of flushing fluid acts on flushing valve, the pressure of its elastic force that overcomes spring and well intracavity liquid is moved downward, and flushing valve is opened, and flushing fluid just enters in the former model utility, the valve ball of bottom valve overcomes magnetic core gravitation under flushing fluid pressure, drop on the bottom valve valve seat, bottom valve cuts out, flushing fluid just upwards returns out through the oil pipe of oil pump.Well-flushing is finished, and flushing valve is closed, and bottom valve is opened, and pumping well returns to normal production.Spring give that tight power is lowered to the degree of depth in the oil well according to shunt and the fluid pressure of pit shaft is reconciled, to realize the optimum state of well-flushing.

The advantage of former model utility is: join magnetic with downhole packer and use, can improve the production status of oil well, especially help former oil accumulation in low-voltage and low-yield oil well shaft bottom and extraction, improve the oil pumping working efficiency, increase there is not well production, improves the well-flushing situation of pumping well simultaneously, prevents the flushing fluid oil reservoir, improve well-flushing efficient, prolonged time between well-flushings.But can't observe and record producing fluid level.

The present invention when well-flushing, can demonstrate than former patent 92216312X model utility have higher function as: the invention stopping well-flushing after, temperature sensing spring utilizes the surplus temperature of flushing fluid and upholds the common spring of compression, make descent of piston, open on top, cause oil, sleeve pipe to be communicated with, can survey its producing fluid level this moment, and valve cuts out again automatically after temperature descends, and reaches the purpose of negative pressure production.

Further specify below in conjunction with example of the present invention:

See Fig. 1.

Structure of the present invention following 15; the 16th, connect lower tubular column on the pumping well 3 " screw thread; as the flushing fluid of certain temperature when casing annulus flows to packet shutoff position; flushing fluid has only by the well washing hole 5 on valve body 2 tops and crosses oily keyway 6 and enters valve pocket 3; piston 4 is descending under pressure; pressure spring 7; make flushing fluid enter the inner chamber 14 up purposes that reach well-flushing of upper valve base 1; flushing fluid is descending along the same hole 8 of piston when flushing fluid enters upper valve base inner chamber 14; when through magnetic core valve 9; flushing fluid is by magnetic core valve endoporus 10; the suction that flushing fluid makes valve ball 11 lose the magnetic core valve under the effect that pressure and stream are drops on the endoporus top of lower valve base 13; reaching flushing fluid can only up purpose that can not be descending, and the protection oil reservoir is not contaminated.

In addition when the flushing fluid that has uniform temperature enters valve body 2, top well washing hole 5, upper spring 17(temperature sensing spring, claiming the temperature control spring again) elongation automatically of being heated opens, go up in limited time when reaching design, can stop to pour into flushing fluid at any time, meanwhile piston 4 is upheld the common spring 7 of effect lower compression of (length) power at temperature sensing spring, make the flushing fluid between 14 upper valve base inner chambers and the valve pocket 3 can not be advanced into the shaft bottom down, this has just reached not only well-flushing but also has not polluted the purpose on stratum.

When the flushing fluid that uniform temperature is arranged is through valve body top, the temperature sensing spring 17 on top is heated in addition, automatically distending elongation after temperature sensing spring is heated, flushing fluid stops to inject after reaching the design extension, piston 4 is pushed under the effect of temperature sensing spring 17, spring 7 is shunk, valve like this, fluid between oil pipe and the annular space is connected, when stablizing, can survey pressure the producing fluid level of its annular space immediately, after the flushing fluid temperature lowers, valve 8 is communicated with oil-through hole 5, owing to stopped the perfusion flushing fluid, valve ball is under the effect of underground energy, the position that valve ball is up gets back to the adhesive of magnetic core valve at this moment pumping well casing pressure steadily after, the liquid level reaction of oil well annular space be the objective producing fluid level that is communicated with oil reservoir, therefore immediately to the igniting of test big gun rifle, can obtain the height of annular space producing fluid level, owing to stopped the injection of flushing fluid, therefore temperature sensing spring 17 can shrink automatically in the certain hour, restores to the original state at the effect lower piston of spring 7, close 14 with 3 be communicated with.

18 for inlaying the water chestnut pin that the magnetic core valve is used.

Claims (6)

1, a kind of pumping well washing well can be surveyed the temperature control diverter valve of annular space liquid level again, and body interior has box type piston and goes up temperature control spring and the common spring open in usual in bottom, and there are magnetic core Restrictor Valves and valve ball in valve body lower portion inside.Spring can be regulated by last lower valve base.

2, temperature control diverter valve according to claim 1 is characterized in that: temperature control spring and effect be the spring at two ends up and down.

3, it is characterized in that according to claim temperature control diverter valve can be at the spring-loaded box type piston in two ends up and down.

4, it is characterized in that according to the described temperature control diverter valve of claim: with water chestnut pin fixed magnetic core overflowing device.

5, it is characterized in that according to the described temperature control diverter valve of claim: the spring seat design of box type piston upper end had oily keyway.Comprise and transfer this gasket ring of road to cross oil groove.

6, the application on oil well diverter valve (one-way valve) to magnetic material and heat sensitive material (memory metal).

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