CN202202844U - Piston tool equipped with adjustable by-pass valve - Google Patents
Piston tool equipped with adjustable by-pass valve Download PDFInfo
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- CN202202844U CN202202844U CN2011202856475U CN201120285647U CN202202844U CN 202202844 U CN202202844 U CN 202202844U CN 2011202856475 U CN2011202856475 U CN 2011202856475U CN 201120285647 U CN201120285647 U CN 201120285647U CN 202202844 U CN202202844 U CN 202202844U
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Abstract
A piston tool equipped with an adjustable by-pass valve comprises a piston main body, a salvage head and a by-pass valve assembly, wherein the piston main body adopts a tubular structure with a central channel; the by-pass valve assembly comprises a valve casing, a valve rod, a regulating sleeve and a locating stud; a plurality of rectangular holes communicated with the interior flow passage of the valve casing are formed on the side wall of the valve casing; the regulating sleeve adopts a cylindrical structure, and is in clearance fit with and embedded in the valve casing; the valve casing and the regulating sleeve are arranged in such a manner that the valve casing and the regulating sleeve can rotate relative to each other; a plurality of liquid inlet holes, which are the same as the rectangular holes in size and shape, are formed on the regulating sleeve in positions corresponding to the rectangular holes; a positioning pin hole is formed on the valve casing; a plurality of regulating pin holes, which are the same as the positioning pin hole in size, are formed on the regulating sleeve in positions corresponding to the height of the positioning pin hole; and the locating stud is inserted into the positioning pin hole and one of the regulating pin holes. Accordingly, the overflow opening degree of the by-pass valve provided by the piston tool can be adjusted as required, the operation state of the piston during descending is optimized, and the production efficiency is improved.
Description
Technical field
The utility model relates to a kind of plunger instrument; Especially relate to a kind of oil gas field production gas technology field that is applied to, be used for the plunger instrument of being furnished with the scalable bypass valve operation of natural gas well liquid discharging gas producing, that can carry out parameter regulation according to the actual conditions down-hole of gas well.
Background technology
Along with the demand of national economy to clean energy resource constantly increases, the shared ratio of gas consumption rises year by year, and is also increasingly high to the development and use attention degree of natural gas resource.Along with the recovery percent of reserves raising in gas field, many gas wells have got into the stage of low pressure, low yield.The gas well flow velocity is low excessively, can not reach the critical flow quantity of taking of gas well, and the shaft bottom hydrops increases, and wellbore pressure raises, and finally causes well to be crushed to death, and can't produce.Therefore, must take effectively to remove hydrops technology to guarantee the long-term stability production of gas well.
The multiple liquid discharging gas producing technology of on-the-spot at present use, plunger lift is a kind of batch (-type) lifting method (as shown in Figure 1) that utilizes the energy of reservoir own to take liquid.Plunger be one with oil pipe be complementary can be in oil pipe free-swimming piston.During work, first closing well improves bottom pressure, and pressure rises in the time of satisfying the lifting requirement and drives a well, and the plunger 5 in shaft bottom relies on the pressure of gas well in oil pipe, to rise, and rises to well head lubricator 1 always.The switch of pipeline is controlled to adjust by electric switching valve 3 and electronic controller 4; What be positioned at main valve 8 tops is that plunger arrives sensor 9; When plunger 5 arrived sensor 9 through plunger, plunger arrived sensor 9 and sends signal to electronic controller 4, and electronic controller 4 is opened electric switching valve 3; Liquid is discharged from pipeline threeway 2, and natural gas is from oil jacket annular space output.Along with the continuous extraction of natural gas, wellbore pressure descends, and electric switching valve 3 is closing well again, and plunger 5 relies on self gravitation to fall to the shaft bottom, begins next pressure recovery process.Wellbore bottom has bottom damper 6, prevents that plunger from falling behind damage 5 times.Gas well drives a well and forms the work period of a plunger lift with closing well, cycle repeats this periodically move just can be shaft bottom hydrops and the continuous extraction of natural gas.Through plunger lift, between the liquid of gas and extraction, form a fixing mechanical interface, can effectively prevent the falling and the slippage of liquid, improve discharge opeing efficient.Compare with other liquid discharging gas producing technology, plunger lift utilizes reservoir energy fully, and entire system is simple in structure, and cost approximately has only the 1/5-1/4 of sucker rod pump, is fit to very much the needs of gas field middle and later periods exploitation.For technique of plunger gas lift, improve the speed that plunger rises and falls, shortening the plunger cycle of operation is the key that improves system works efficient and well yield.
The related plunger instrument of having applied at present of related patent U.S. Patent No. is the uncontrollable plunger instrument of parameter.Adjust the relevant parameter of plunger if desired, can only change bypass valve even whole plunger, very inconvenience influences the production and the maintenance of gas well.The patent No. is that 201020193814.9 utility model relates to a kind of drainage gas production plunger in gas well, is applied to the continuous high-efficient plunger water pumping gas production that natural gas well water pumping gas production is produced.What this technology adopted is the bypass valve design scheme of fixedly aperture, if regulate aperture, must plunger be taken out in well, changes corresponding component.On main drum outer wall, only be with a joint ring less, be connected with lower bottom base, on the lower bottom base wall intercommunicating pore is arranged at main lower end external screw thread; A switch valve rod is arranged on the ring-shaped step of lower bottom base lower end, and the lower end cylindrical bar of switch valve rod passes the centre bore of lower bottom base lower end step cutting pattern, and the switch valve rod upper surface is embedded with sealing ring; On the lower surface of main tube lower end ring-shaped step, downward annular protrusion is arranged; The sealing ring of main tube lower end annular protrusion and switch valve rod upper end is relative.Effect is: under the promotion of mine gas, in oil pipe, swim back and forth up and down, realize that gas well can continuous drainage gas production production.The patent No. is that the utility model of CN200971772 relates to a kind of petroleum and natural gas exploitation field that is used for, and particularly is directed against the relay-type plunger lift oil recovery device of air of high gas-liquid ratio well.It is applicable to the plunger lift of the combination oil pipe of up big and down small two kinds of diameters, has enlarged the scope of application of plunger lift technology.It mainly is made up of well head part, down-hole part and plunger three parts, and it is characterized in that: oil pipe is the up big and down small combination tubing string of internal diameter, and the buffer spring of down-hole part, oil pipe fastener are installed in the little oil pipe of bottom; The relay-type plunger is connected through the flap spring-loaded pawl by between big plunger and small plunger, and big plunger is installed in the Big Inch of top, and big plunger hollow also can take off automatically with the banjo fixing butt jointing on the small plunger, connect, and small plunger is installed in the little oil pipe of bottom.Small plunger is lifting in little oil pipe, and small plunger docks back lifting in the major diameter oil pipe with big plunger, and the dependence inertia force that takes off, connects little, big plunger is realized automatically, makes full use of stratum output gas promotion plunger motion and recovers the oil or water pumping gas production.
At present, the gas field has begun a large amount of plunger instruments of being furnished with bypass valve that adopt and has carried out the operation of gas well liquid discharging gas producing.From the uphill process of shaft bottom, because the effect of air pressure, the valve rod of bypass valve is in upper at plunger, the inner formation sealing of its end face and plunger, and bypass valve cuts out.After plunger arrives the well head lubricator, receive the effect of lubricator inner push-rod, the bypass valve valve rod falls, and bypass valve is opened, and pressure balance on the plunger can fall after rise fast.Compare with the plunger instrument that does not have bypass valve, this technology has stronger advantage at aspects such as work period, plunger up-downgoing speed.Yet existing plunger bypass valve all is the fixing project organization of aperture, can not carry out aperture according to changeable down-hole situation and regulate.If aperture can not in time be adjusted, will influence the falling speed of plunger, prolong the cycle of operation of plunger, reduce the whole efficiency of system, the output of gas well also will descend.
The utility model content
The technical problem that the utility model solves provides a kind of plunger instrument of being furnished with the scalable bypass valve, and the overcurrent aperture of its bypass valve can be regulated as required, improves the falling speed of plunger.
The technical solution of the utility model is:
A kind of plunger instrument of being furnished with the scalable bypass valve, wherein, said plunger instrument comprises: plunger body, for having the tubular structure of central passage; Fishing head is connected with the upper end of said plunger body; By-pass valve assembly; Include valve casing, valve rod, regulating sleeve and alignment pin: said valve casing is the hollow tubular structure with inner flow passage that is connected with the bottom of said plunger body, and its sidewall is provided with a plurality of strip holes that are communicated with the inner flow passage of said valve casing; Said regulating sleeve be a tubular structure and matched in clearance be set in the said valve casing; Between said valve casing and the said regulating sleeve for being provided with relatively rotating; Said plunger body bottom is replaced in said regulating sleeve upper end; The lower end is resisted against the upper surface of the boss in the said valve casing, and the corresponding said strip hole of this regulating sleeve is provided with the identical inlet opening of a plurality of and said strip hole size and dimension; Said valve casing is provided with a location pin-and-hole, and the height of the corresponding said dowel hole of said regulating sleeve is provided with the identical adjusting pin-and-hole of a plurality of and said dowel hole size, and said alignment pin is inserted in said dowel hole and one of them the said adjusting pin-and-hole; Said valve rod is the T type body of rod with head and stock; It can be arranged in said regulating sleeve and the valve casing movably; The soffit of said valve rod head can be resisted against the bottom surface of said regulating sleeve; The stock of said valve rod can wear to said valve casing outside via the hole at said regulating sleeve bottom surface and said boss middle part, and said valve rod head diameter is greater than the internal diameter of said plunger body.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve; Wherein, Said valve casing be provided with 4 said strip holes; Said regulating sleeve is provided with 12 said adjusting pin-and-holes, and said alignment pin, dowel hole and said adjusting pin-and-hole cooperate three overcurrent apertures that form said bypass valve, comprise 1/3,2/3 and 100% aperture.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve wherein, is provided with the locking assembly in the said valve casing and below being positioned at said convex, and said locking assembly below is provided with the bonnet of fixing this locking assembly of ejection; Said locking assembly comprises binding ring and ring spring, and the diameter of this binding ring centre bore is slightly less than the diameter of the stock of said valve rod, and its lateral wall is provided with a plurality of annular grooves, and said ring spring is sheathed on the said annular groove; This binding ring is the annular solid that combined by a plurality of arc blocks.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve, wherein, the head of said valve rod is provided with the taper chamfering, and said plunger body bottom is provided with the taper chamfering that cooperates with the taper chamfering of said valve rod head.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve wherein, is provided with the capillary pipe structure that runs through head and stock bottom in the said valve rod, the top of said plunger body is provided with fluid hole.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve, wherein, said capillary pipe structure runs through in said stock and is provided with a capillary tube, and this capillary tube is separated into many capillary tubies in the head of said valve rod, and is communicated with the upper surface of this head.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve, wherein, said plunger body external surface is provided with a plurality of annular grooves.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve, wherein, said plunger body external surface also is provided with the spiral flow channel structure near the position of end.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve wherein, also is provided with the instrument seating nipple between said fishing head and the said plunger body.
The above-mentioned plunger instrument of being furnished with the scalable bypass valve wherein, is screw connection structure between said plunger body, fishing head, valve casing and the bonnet.
Learn that by above explanation the utility model can reach following effect really:
A kind of plunger instrument of being furnished with the scalable bypass valve of the utility model.This this structure can guarantee that plunger is the fastest at the dropping process medium velocity through the adjustable bypass valve of improved plunger employing aperture, and manufacturing parameter reaches optimization.Simultaneously, the valve rod of bypass valve has the capillary pipe structure that the gas-liquid of making is effectively mixed, and through making the liquid entrained gas of plunger top, reaches the reduction fluid density, reduces the pressure of institute's lifting liquid, accelerates the purpose of the plunger rate of climb.Plunger helical structure up and down can form local turbulence, effectively removes sand plug, improves fluid-carrying capability.This plunger upper tool part is furnished with the instrument seating nipple, can carry out the measurement of all kinds of downhole parameters to gas well, has enlarged the purposes of plunger instrument.
The operating efficiency that the utility model has solved traditional plunger instrument is low, can not conveniently regulate shortcomings such as parameter, develops the novel plunger instrument of being furnished with the scalable bypass valve.The utility model can be according to realistic well condition quick adjustment operational factor; Special design can improve the speed that plunger rises and falls; Shorten the cycle of operation of plunger, improve the fluid-carrying capability of plunger, cancelled the traditional cable logging operation simultaneously; The measurement of each item downhole parameters is more convenient, and the gas well stable yields is able to guarantee.Whole system is simple in structure; Operating efficiency is high; Good reliability; Can be used for the liquid discharging gas producing operation of all kinds of gas wells, comprise routine and unconventional gas reservoir development wells such as gas stringer, the depleted gas well of gas reservoir pressure, the condensate gas gas well in exploitation later stage, tight gas gas well, shale gas gas well, coal bed gas gas well.
As stated, the utility model has overcome the shortcoming of existing bypass valve plunger, can adjust the plunger operational factor fast, and the instrument seating nipple of being furnished with can carry out the measuring multiple parameters operation.Compare with conventional art, this instrument has higher operating efficiency, and better operation stability and reliability have good market prospects.
Description of drawings
Fig. 1 is the sketch map of plunger liquid discharging gas producing system;
Fig. 2 is the downstream state sketch map of the preferred embodiment of the utility model;
Fig. 2 A is the sectional view of Fig. 2;
Fig. 3 is the uplink state sketch map of the preferred embodiment of the utility model;
Fig. 3 A is the partial schematic diagram of Fig. 3;
Fig. 4 is the cross-sectional schematic of the by-pass valve assembly of the utility model;
Fig. 5 is the cross-sectional schematic of the valve casing of the utility model;
Fig. 6 is the cross-sectional schematic of the regulating sleeve of the utility model;
Fig. 7 is the cross-sectional schematic of the locking assembly of the utility model.
The critical element label declaration:
1: lubricator assembly 2: pipeline threeway 3: electric switching valve
4: electronic controller 5: plunger 6: the bottom damper
7: main valve 8: plunger arrives sensor 9: fishing head
10: instrument seating nipple 11: plunger body 12: by-pass valve assembly
13: regulating sleeve 14: alignment pin 15: valve rod
16: valve casing 17: bonnet 18: the locking assembly
19: binding ring 20: ring spring 21: strip hole
22: inlet opening 23: dowel hole 24: regulate pin-and-hole
The specific embodiment
A kind of plunger instrument of being furnished with the scalable bypass valve comprises: plunger body, fishing head and by-pass valve assembly; Plunger body is the tubular structure with central passage; Fishing head is connected with the upper end of plunger body; By-pass valve assembly includes valve casing, valve rod, regulating sleeve and alignment pin: valve casing is the hollow tubular structure with inner flow passage that is connected with the bottom of plunger body, and its sidewall is provided with a plurality of strip holes that are communicated with the inner flow passage of valve casing; Be set in the valve casing to the regulating sleeve matched in clearance; Between said valve casing and the said regulating sleeve for being provided with relatively rotating; The plunger body bottom is replaced in the regulating sleeve upper end; The lower end is resisted against the upper surface of the boss in the valve casing, and the corresponding strip hole of this regulating sleeve is provided with a plurality of inlet openings identical with the strip hole size and dimension; Valve casing is provided with a location pin-and-hole; The height of the corresponding dowel hole of regulating sleeve is provided with a plurality of and the big or small identical adjusting pin-and-hole of dowel hole; Alignment pin is inserted in dowel hole and one of them is regulated in the pin-and-hole, between valve casing and the regulating sleeve is can relatively rotate or the setting of relative fixed ground; Valve rod is the T type body of rod with head and stock; It can be arranged in regulating sleeve and the valve casing movably; The soffit of valve rod head can be resisted against the bottom surface of regulating sleeve; The stock of valve rod can wear to valve casing outside via the hole at regulating sleeve bottom surface and boss middle part, and the valve rod head diameter is greater than the internal diameter of plunger body.
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present.
Shown in Fig. 2 to Fig. 3 A, be a kind of preferred embodiment of plunger instrument of being furnished with the scalable bypass valve of the utility model, the plunger instrument of being furnished with the scalable bypass valve of the utility model comprises: plunger body 11, fishing head 9 and by-pass valve assembly 12.Plunger body 11 is to realize the core component of gaslift liquid discharging gas producing function, the tubular structure of plunger body 11 for having central passage, and this central passage is used for passing through for liquid; Fishing head 9 is used for using when ground installation is salvaged the plunger instrument for meeting the structure of API standard; Fishing head 9 is connected with the upper end of plunger body 11; The centre of fishing head 9 is provided with through hole, the effect of through hole be convenient in the lubricator push rod through and get into the inside of plunger instrument.In addition, by-pass valve assembly 12 includes valve casing 16, valve rod 15, regulating sleeve 13 and alignment pin 14, wherein:
Please in the lump with reference to Fig. 4 to shown in Figure 6, valve casing 16 is the hollow tubular structure with inner flow passage that is connected with the bottom of plunger body 11, its sidewall is provided with a plurality of strip holes that are communicated with inner flow passage 21; Regulating sleeve 13 be a barrel-like structure and matched in clearance be set in the valve casing 16; Between valve casing 16 and the regulating sleeve 13 for being provided with relatively rotating; Plunger body 11 bottoms are replaced in regulating sleeve 13 upper ends, and the lower end is resisted against the upper surface of the boss in the valve casing 16, preferably; The top of regulating sleeve 13 has an opening, and its bottom is the bottom surface with a hole; And regulating sleeve 13 corresponding strip holes 21 are provided with a plurality of inlet openings 22 identical with strip hole 21 size and dimensions;
In addition, valve casing 16 also is provided with a location pin-and-hole 23, and the height of regulating sleeve 13 corresponding dowel holes 23 is provided with a plurality of and dowel hole 23 big or small identical adjusting pin-and-holes 24, and alignment pin 14 is inserted in dowel hole 23 and one of them the said adjusting pin-and-hole 24; During installation, the dowel hole 23 of valve casing 16 is relative with regulating sleeve 13 one of them adjusting pin-and-hole 24, inserts alignment pin 14, and valve casing 16 and regulating sleeve 13 are fixed together.When needs were regulated the overcurrent aperture of bypass valve, rotatable regulating sleeve 13 made its corresponding pin-and-hole 24 of regulating forward the position relative with the dowel hole of valve casing 16 23 to, again with alignment pin 14 fixed connections.Through the relative position of adjustment regulating sleeve 13 with respect to valve casing 16; The inlet opening 22 of regulating sleeve 13 and valve casing 16 and the registration between the strip hole 21 are changed; Thereby change the overcurrent aperture of bypass valve, so that be directed against the running status that on-the-spot actual condition is better controlled the plunger instrument.
Moreover; The valve rod 15 of this preferred embodiment is for having the T type body of rod of head and stock; It can be arranged in regulating sleeve 13 and the valve casing 16 movably; And the soffit of valve rod 15 heads can be resisted against the bottom surface of regulating sleeve 13, and the stock of valve rod 15 can wear to valve casing 16 outsides via the hole at regulating sleeve 13 bottom surfaces and boss middle part, and valve rod 15 head diameters are greater than the internal diameter of said plunger body 11; Whereby, when valve rod 15 was made progress by ejection, the top surface edge of its head can be replaced the following ora terminalis of plunger body 11, made the top of valve rod 15 location valve casings 16, had cut off the central passage of valve casing 16 inner flow passages and plunger body 11; And when valve rod 15 was downward by the top, the soffit of its head had got out of the way the strip hole 21 of valve casing 16 against the bottom surface of living regulating sleeve 13, and the central passage of strip hole 21, inner flow passage and the plunger body 11 of valve casing 16 is connected.
The plunger instrument of being furnished with the scalable bypass valve of aforesaid the utility model; Wherein a kind of preferred implementation: valve casing 16 is provided with 4 strip holes 21; Regulating sleeve 13 is provided with 12 and regulates pin-and-hole 24; Wherein alignment pin 14, dowel hole 23 and adjusting pin-and-hole 24 cooperate three overcurrent apertures that form bypass valve, comprise 1/3,2/3 and 100% aperture.Different apertures produces different area of passages, makes the liquid of internal flow obtain different flow rate, pressure, thereby directly influences the up-downgoing motion conditions of plunger instrument in oil pipe.The quantity of the adjusting pin-and-hole 24 through increasing regulating sleeve 13 can obtain more bypass valve aperture, and the operational factor of plunger can have more selection like this, helps the optimization of plunger lift system; Therefore, the quantity of the strip hole 21 of the bypass valve of the utility model, adjusting pin-and-hole 24 can be configured not as limit according to actual needs, so that bypass valve can obtain a plurality of different apertures.
In the process that valve rod 15 moves up and down in valve casing 16; Valve rod 15 need be replaced the bottom inner peripheral of plunger body 11; And it is, better, preferable in order to make sealing effectiveness making the good sealing state of maintenance between valve rod 15 bottom surfaces and plunger body 11 bottoms under the effect of thrust; The head of the valve rod 15 of the utility model is provided with the taper chamfering, and plunger body 11 bottoms are provided with the taper chamfering that cooperates with the taper chamfering of valve rod 15 heads; Therefore; When valve rod 15 was pushed to the top, the cooperating of the taper chamfering of the taper chamfering of the head through valve rod 15 and the cylindrical end face of relative plunger body 11 was under the effect of thrust; The head taper surface of valve rod 15 closely contacts with the taper surface of plunger body 11, forms effectively sealing.In addition, two taper surfaces will have enough machining accuracies and roughness, to guarantee good seal.
In the up process of plunger instrument, can also reduce the lift-off pressures of plunger instrument through the density of liquid in the adjustment piston body central passage; The plunger instrument of being furnished with the scalable bypass valve of the utility model, preferable, be provided with the capillary pipe structure that runs through head and stock bottom in its valve rod 15; When valve rod 15 heads seal against contacting with plunger body 11 lower end peripheries, be communicated with the central passage of plunger body 11 inside and the inner flow passage of valve casing through capillary pipe structure; The top of plunger body 11 is provided with fluid hole, and in the plunger instrument lifting process, liquid is flowed out by fluid hole.
As stated; The plunger instrument of being furnished with the scalable bypass valve of the utility model, preferable, its capillary pipe structure runs through in stock and is provided with a capillary tube; And capillary tube is separated into many capillary tubies in the head of valve rod 15, and the upper surface of many capillary tube connection valve rod 15 heads.There is capillary pipe structure the stock inside of valve rod 15, and at the head of valve rod 15 the branched hair tubule of forked is arranged, and forms a miniature nozzle; In the up stage of plunger instrument, the fraction gas of valve casing bottom will get into the central passage in the plunger body 11 through capillary tube, and the liquid regions from the fluid hole of the inclination of plunger body 11 tops gets into plunger body 11 tops forms great amount of bubbles.Through making liquid sneak into the mode of little of gas, can effectively reduce density of liquid, reduce the lift-off pressures of plunger, thereby help accelerating the speed uplink of plunger, improve the operating efficiency of system.
The plunger instrument of being furnished with the scalable bypass valve of the utility model, in a kind of preferred implementation, plunger body 11 external surfaces are provided with a plurality of annular grooves; These annular grooves of plunger body 11 external surfaces can be used for removing materials such as the interior sand of pit shaft, wax, dirt, make the plunger instrument more smooth and easy in the up-downgoing process.
In addition, the plunger instrument of being furnished with the scalable bypass valve of the utility model, under preferable situation, plunger body 11 external surfaces also are provided with the spiral flow channel structure near the position of end; Near the plunger body 11 external surface ends spiral flow channel structure can be when plunger instrument uphill process lifting liquid; Produce local turbulent flow by the spiral flow channel structure; Improve fluid-carrying capability, avoid the falling and the slippage of liquid, help to improve lifting efficiency.Simultaneously, the spiral flow channel structure also can play the effect of removing attached to plunger tool surfaces sand plug, is obstructed when preventing the plunger operation.
The plunger instrument of being furnished with the scalable bypass valve of the utility model; Please in the lump with reference to shown in Figure 7; Preferable; Be provided with locking assembly 18 in the valve casing 16 and below being positioned at boss, it mainly does the time spent keeps valve rod 15 when bypass valve opens and cuts out position, and mechanical shock, hydraulic shock grade want factor to cause valve rod 15 to produce misoperations when preventing the plunger operation; Locking assembly 18 belows are provided with the bonnet 17 of fixing this locking assembly 18 of ejection; Locking assembly 18 comprises binding ring 19 and ring spring 20, and the diameter of binding ring 19 centre bores is slightly less than the diameter of the stock of valve rod 15, and its lateral wall is provided with a plurality of annular grooves, and ring spring 20 is sheathed on the annular groove; Binding ring 19 is the annular solid that combined by a plurality of arc blocks.What annular solid was preferable can be combined to form for the arc block of two semicircles; Its outside is provided with two annular grooves, is equipped with two ring springs 20, has formed the whole revolving parts of a band through hole and two annular grooves; When installing, two semicircular arc pieces are got togather; Two ring springs 20 are filled in the annular groove, through the effect of ring spring 20, binding ring 19 is by being buckled together tightly again.The diameter of the circular hole that forms behind two arc piece make-ups of binding ring 19 is slightly less than the external diameter of valve rod 15 stocks; Therefore, after by-pass valve assembly 12 installations, when valve rod 15 passes locking assembly 18 binding ring 19 is strutted; By the effect of the restoring force of ring spring 20, valve rod 15 is held tightly; Whereby, except the plunger instrument is made valve rod 15 moves by the effect of bottom damper in the effect of well head drawn stem, in the shaft bottom, other interference can be not influential to the position of valve rod 15 in valve casing 16, thereby keep relatively-stationary position.
In practical application, often need measure gas well, the plunger instrument of being furnished with the scalable bypass valve of the utility model, preferable, also be provided with instrument seating nipple 10 between fishing head 9 and the plunger body 11.Instrument seating nipple 10 is for carrying the protecting sheathing of downhole probe (like pressure, temperature pick up), and two ends and fishing head 9 and plunger body 11 are through being threaded.There is inlet opening on instrument seating nipple 10 surfaces, are used for the parameters such as pressure, temperature of inner sensor measurement downhole fluid.10 of instrument seating nipples carry out just being installed in the plunger instrument when pit shaft is measured operation at needs, during plunger instrument ordinary production, at the fishing head 9 of plunger body 11 on connecting band through hole, and need not assemble instrument seating nipple 10.
The plunger instrument of being furnished with the scalable bypass valve of the utility model is a screw connection structure between its plunger body 11, fishing head 9, valve casing 16 and the bonnet 17, but not as limit, also can adopt other connected mode to connect.
In sum, be example with the plunger instrument preferred embodiments of being furnished with the scalable bypass valve of above-mentioned the utility model, the practical work process of the utility model is following:
At first, according to the actual condition of gas well, through the regulating sleeve of rotary plunger instrument, the size of adjustment bypass valve overcurrent aperture after adjusting, again with steady pin secured adjusted cover 13, keeps the overcurrent aperture size of bypass valve.When the gas well ordinary production, the plunger instrument of being furnished with bypass valve rests on the damper in the oil pipe, and valve rod 15 is pushed to the top.The well head switch valve cuts out, and builds the pressure in the pit shaft, and pressure raises gradually.When pressure reached required value, the well head switch valve was opened, and plunger is up.Owing to bearing the thrust that gas makes progress below the pressure differential of both sides about the plunger, valve rod 15,, in the up stage of whole plunger, making bypass valve all be in closed condition so valve rod 15 rests on the position of top all the time.In the up stage of plunger, it is inner that the fraction gas of plunger bottom will get into plunger through capillary tube, and the liquid regions from the fluid hole of the inclination of plunger body 11 tops gets into the plunger top forms great amount of bubbles, accelerates the speed uplink of plunger.
And after plunger moved to lubricator and caught by well head, it is inner that the inner push rod of lubricator 1 gets into plungers from the fishing head 9 of band through hole, and valve rod 15 is disclosed, and bypass valve transfers open mode to.Push rod is positioned at the center of lubricator 1 inside, is an elongate rod structure, can stretch into the inside of plunger instrument, and push rod is the part of using always in the gas well mouth lubricator of existing use bypass valve plunger.The strip hole 21 of valve casing 16 communicates with the inner runner of plunger, and flowing that plunger is inner undertaken by the direction of arrow of Fig. 3.Afterwards, pressure balance on the plunger.After switch valve 3 cut out, plunger freedom of entry falling bodies state began descending.When plunger is got back to the damper 6 in shaft bottom once more, receive thrust, valve rod 15 is got back to upper, and bypass valve cuts out, and system gets into the next work period, begins new operation cycle.
In addition, when gas well was measured, the plunger instrument of the seating nipple 10 that installs instruments was dropped in the gas well.When plunger was descending, bypass valve was in open mode.Plunger is to the shaft bottom, and valve rod 15 is in top, and bypass valve is closed.Simultaneously, the sensor in the instrument seating nipple 10 starts go forward side by side line data collection and record.After measuring the operation completion, ground surface on-off valve 3 is opened, and the instrument seating nipple 10 that plunger carries record data gets into the up stages.After arriving lubricator 1 and being captured, open wellhead cap, take out the plunger instrument, take off instrument seating nipple 10, connect data handling system and carry out that data read and analytical work.
This utility model has proposed a kind of scheme of being furnished with the plunger instrument of scalable bypass valve, can satisfy the production demand of the natural gas well with complicacy, changeable operating mode.This technology has following characteristics: (1) has the adjustable bypass valve of aperture: regulate aperture according to the realistic well condition condition; Avoid changing whole valve modules; Guarantee that the plunger falling speed is the fastest under conditions such as different gas well pressure, flow velocity, fluid density, operational factor is optimum; The capillary tube that (2) gas-liquid is effectively mixed: the bypass valve valve rod has capillary pipe structure, and when plunger rose, the gas of plunger below constantly got into the liquid of plunger top through capillary tube; And fully mix; The sealing of liquid reduces, and the pressure of plunger top descends, and the speed that plunger is risen is faster; (3) special helical structure: this structure is made local turbulent flow near plunger in the plunger uphill process; Can effectively improve fluid-carrying capability; Prevent that liquid from falling after rise and slippage; In the time of the plunger operation, this structure is removed sand setting, wax, fouling on the tube inner wall with plunger body, helps guaranteeing the stable operation of plunger lift system; (4) is furnished with the instrument seating nipple: need not the wireline logging operation, can carry out measuring multiple parameters, use very convenient.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (10)
1. a plunger instrument of being furnished with the scalable bypass valve is characterized in that, said plunger instrument comprises:
Plunger body is for having the tubular structure of central passage;
Fishing head is connected with the upper end of said plunger body;
By-pass valve assembly includes valve casing, valve rod, regulating sleeve and alignment pin:
Said valve casing is the hollow tubular structure with inner flow passage that is connected with the bottom of said plunger body, and its sidewall is provided with a plurality of strip holes that are communicated with the inner flow passage of said valve casing; Said regulating sleeve be a tubular structure and matched in clearance be set in the said valve casing; Between said valve casing and the said regulating sleeve for being provided with relatively rotating; Said plunger body bottom is replaced in said regulating sleeve upper end; The lower end is resisted against the upper surface of the boss in the said valve casing, and the corresponding said strip hole of this regulating sleeve is provided with the identical inlet opening of a plurality of and said strip hole size and dimension;
Said valve casing is provided with a location pin-and-hole, and the height of the corresponding said dowel hole of said regulating sleeve is provided with the identical adjusting pin-and-hole of a plurality of and said dowel hole size, and said alignment pin is inserted in said dowel hole and one of them the said adjusting pin-and-hole;
Said valve rod is the T type body of rod with head and stock; It can be arranged in said regulating sleeve and the valve casing movably; The soffit of said valve rod head can be resisted against the bottom surface of said regulating sleeve; The stock of said valve rod can wear to said valve casing outside via the hole at said regulating sleeve bottom surface and said boss middle part, and said valve rod head diameter is greater than the internal diameter of said plunger body.
2. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 1; It is characterized in that; Said valve casing is provided with 4 said strip holes; Said regulating sleeve is provided with 12 said adjusting pin-and-holes, and said alignment pin, dowel hole and said adjusting pin-and-hole cooperate three overcurrent apertures that form said bypass valve, comprise 1/3,2/3 and 100% aperture.
3. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 1 is characterized in that, is provided with the locking assembly in the said valve casing and below being positioned at said boss, and said locking assembly below is provided with the bonnet of fixing this locking assembly of ejection; Said locking assembly comprises binding ring and ring spring, and the diameter of this binding ring centre bore is slightly less than the diameter of the stock of said valve rod, and its lateral wall is provided with a plurality of annular grooves, and said ring spring is sheathed on the said annular groove; This binding ring is the annular solid that combined by a plurality of arc blocks.
4. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 1 is characterized in that the head of said valve rod is provided with the taper chamfering, and said plunger body bottom is provided with the taper chamfering that cooperates with the taper chamfering of said valve rod head.
5. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 1 is characterized in that, is provided with the capillary pipe structure that runs through head and stock bottom in the said valve rod, and the top of said plunger body is provided with fluid hole.
6. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 5; It is characterized in that; Said capillary pipe structure runs through in said stock and is provided with a capillary tube, and this capillary tube is separated into many capillary tubies in the head of said valve rod, and is communicated with the upper surface of this head.
7. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 1 is characterized in that said plunger body external surface is provided with a plurality of annular grooves.
8. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 1 is characterized in that said plunger body external surface also is provided with the spiral flow channel structure near the position of end.
9. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 1 is characterized in that, also is provided with the instrument seating nipple between said fishing head and the said plunger body.
10. the plunger instrument of being furnished with the scalable bypass valve as claimed in claim 3 is characterized in that, is screw connection structure between said plunger body, fishing head, valve casing and the bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202856475U CN202202844U (en) | 2011-08-08 | 2011-08-08 | Piston tool equipped with adjustable by-pass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202856475U CN202202844U (en) | 2011-08-08 | 2011-08-08 | Piston tool equipped with adjustable by-pass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202202844U true CN202202844U (en) | 2012-04-25 |
Family
ID=45966973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202856475U Expired - Fee Related CN202202844U (en) | 2011-08-08 | 2011-08-08 | Piston tool equipped with adjustable by-pass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202202844U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522898A (en) * | 2016-11-02 | 2017-03-22 | 中国石油化工股份有限公司 | Gas well automatic water draining plunger |
| CN106869865A (en) * | 2017-03-06 | 2017-06-20 | 西南石油大学 | A kind of plunger lift Combined Mining gas method integrated with foaming water discharge |
| CN111335843A (en) * | 2020-02-09 | 2020-06-26 | 成都佳广知科技有限公司 | Free-moving cock device in natural gas well |
-
2011
- 2011-08-08 CN CN2011202856475U patent/CN202202844U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522898A (en) * | 2016-11-02 | 2017-03-22 | 中国石油化工股份有限公司 | Gas well automatic water draining plunger |
| CN106522898B (en) * | 2016-11-02 | 2019-05-17 | 中国石油化工股份有限公司 | Gas well Auto-drainage plunger |
| CN106869865A (en) * | 2017-03-06 | 2017-06-20 | 西南石油大学 | A kind of plunger lift Combined Mining gas method integrated with foaming water discharge |
| CN106869865B (en) * | 2017-03-06 | 2019-08-02 | 西南石油大学 | A kind of plunger lift Combined Mining gas method integrated with foaming water discharge |
| CN111335843A (en) * | 2020-02-09 | 2020-06-26 | 成都佳广知科技有限公司 | Free-moving cock device in natural gas well |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20200808 |
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| CF01 | Termination of patent right due to non-payment of annual fee |