CN202152676U - Plunger device for online measurement of gas wells and plunger liquid discharging and gas production system - Google Patents
Plunger device for online measurement of gas wells and plunger liquid discharging and gas production system Download PDFInfo
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- CN202152676U CN202152676U CN2011201826025U CN201120182602U CN202152676U CN 202152676 U CN202152676 U CN 202152676U CN 2011201826025 U CN2011201826025 U CN 2011201826025U CN 201120182602 U CN201120182602 U CN 201120182602U CN 202152676 U CN202152676 U CN 202152676U
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Abstract
The utility model provides a plunger device for online measurement of gas wells and a plunger liquid discharging and gas production system. The plunger system for on-line measurement of gas wells comprises an instrument working barrel assembly, a plunger central barrel, a plunger sliding sleeve and a damper assembly. The instrument working barrel assembly is located at the top of the plunger device, the plunger central barrel and the plunger sliding sleeve form a main body of the plunger device, and the damper assembly is arranged at the bottom of the plunger device. A measuring instrument and a communication module are arranged in the instrument working barrel assembly, when the plunger device is used in production of a gas well, the plunger device moves back and forth from a well opening to a well bottom and continuously transmits data measured by the under-well measuring instrument to the ground for analyzing by utilizing the communication module at the well opening in wireless data transmission mode. The plunger liquid discharging and oil production system comprises an anti-spraying pipe assembly and a plunger. A measuring device and a communication module are arranged in the plunger for continuously transmitting the data measured by the under-well measuring instrument to a communication module in the anti-spraying pipe assembly by utilizing the communication module at the well opening. The plunger device for online measurement of gas wells and the plunger liquid discharging and gas production system can satisfy the online measuring requirements of gas lift wells of natural gas plungers.
Description
Technical field
The utility model relates to oil gas field production gas technology field, relates in particular to a kind of plunger assembly and plunger liquid discharging gas producing system that is used for the gas well on-line measurement.
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.In recent years, the large-scale commercial applications of unconventional gas resource melts and sends out the general layout that has changed world's market for natural gas.Along with the recovery percent of reserves raising in gas field, many gas wells have got into low pressure, low stage of well yield.The gas well flow velocity is low excessively, can not reach the critical flow quantity of taking of gas well, and fluid-carrying capability is poor, and the shaft bottom progressively produces hydrops, 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 stable yields of gas well.
On-the-spot at present multiple liquid discharging gas producing technology, the necessary external energy that consumes of technology such as sucker rod pump, electric submersible pump of using.Plunger lift is a kind of batch (-type) lifting method 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 in shaft bottom relies on the pressure of gas well in oil pipe, to rise, and rises to the well head lubricator always.The switch of pipeline is controlled to adjust by electric switching valve and electronic controller; What be positioned at the main valve top is that plunger arrives sensor; When plunger arrived sensor through plunger, plunger arrived sensor and sends signal to electronic controller, and electronic controller is opened electric switching valve; Liquid is discharged from the pipeline threeway, 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 is closing well again, and plunger relies on self gravitation to fall to the shaft bottom, begins next pressure recovery process.Wellbore bottom has the bottom damper, prevents to fall behind under the plunger to damage.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 interface, can effectively prevent the falling of liquid, improve lifting efficiency.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.
At present, still adopt traditional cable to be lowered to technology, must let gas well stop production during enforcement earlier, use special cable measuring apparatus to be lowered to the pit shaft from the well head lubricator to the logging method that the plunger gas-lift well is implemented.This technology has been continued to use many decades; Its shortcoming is that gas well must stop production during the well logging, because plunger lift itself is exactly batch production; Plunger whereabouts cycle gas well is aerogenesis not, must improve well yields through reduce measures such as closing well number of times, quickening plunger decrease speed as far as possible.Therefore, stop production during the well logging and avoid closing well to constitute contradiction as far as possible.
Number of patent application is that 200620036229.1 utility model relates to a kind of petroleum and natural gas exploitation field that is used for, particularly to 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.Number of patent application is 200310111081.4 to relate to a kind of temperature control umbrella formula gas lift plunger, and these instrument characteristics are operating modes that the principle of utilizing the folding of umbrella can significantly change its shielded area changes gas lift plunger, and the opportunity and the energy of control opening and closing umbrella are temperature.This is a kind of gas lift plunger that can be used for continuous production (responding curve of well stopping production), utilizes the temperature of down-hole and magnetic that heat energy makes material production thermal deformation or magnetic adiabator to change, and makes the mechanism on the gas lift plunger produce the folding that umbrella is controlled in displacement.Plunger keeps closing up when descending up to the down-hole opens temperature section, keeps when up opening up to well head.Because the cross-sectional area of this plunger when the umbrella sheet draws has only about 1/3 of sectional area in the oil pipe, so under the state of ordinary production, relying on conducts oneself with dignity drops to the shaft bottom.Number of patent application is 200820123711.8 to relate to a kind of well head trap setting that is used for plunger lift, is applied to oil field gas-lift production, gas well water pumping gas production.Characteristic is: mainly be made up of snubber, the oily threeway of mistake and catcher three parts.Crossing oily threeway is the cylinder bodily form, and centre bore is arranged, and on crossing oily threeway, screw thread is arranged, and there is external screw thread the lower end, crosses on the oily threeway sidewall and is fixed with oil-out; There is screw thread the lower end of snubber, and the lower end of snubber was connected in the upper end of oily threeway; Catcher adopts the steel-ball type catcher, and catcher was fixed on the outer wall of oily threeway.Effect is: snubber can produce downward cushion effect, slows down the plunger rate of climb, thus the protection well head.When plunger need overhaul, rotation was positioned at the handwheel of catcher side, and the plunger device that can be captured was stuck in the oily threeway.The end cap at snubber top of outwarding winding unclamps handwheel, can take out plunger.Number of patent application is the down-hole buffer that 200820122545.X relates to a kind of plunger lift, is applied to the kit of oil well plunger lift technology, and cushion effect upwards is provided when plunger drops to the fastener position.Its characteristic: the upper body is a column, and fixedly step of spring is arranged on the outer wall of the middle part of upper body; Lower body is cylindric, and outer wall has fixedly step of spring in the upper end of lower body.In the bottom of upper body is shaft-like cylinder, and spring housing is on the shaft-like cylinder of upper body, and the two ends of spring are on described fixedly step.There is centre bore the upper end of lower body, and lower body is enclosed within the shaft-like cylinder lower end of upper body through centre bore, is fixed by nut in the shaft-like cylinder lower end of upper body, and following physical efficiency is slided along shaft-like cylinder.Effect is: the down-hole buffer can provide cushion effect upwards, slows down the plunger falling speed, protection fastener and oil pipe.In realizing the utility model process, utility model people finds to have following problem in the prior art at least: the patent about plunger lift of having applied for at present relates generally to the frame for movement aspect, still will adopt traditional cable to be lowered to technology during well logging.
The utility model content
The utility model embodiment provides a kind of plunger assembly and plunger liquid discharging gas producing system that is used for the gas well on-line measurement, to satisfy the on-line measurement demand of natural gas plunger lift well.
In order to reach above-mentioned technical purpose, on the one hand, the utility model embodiment provides a kind of plunger assembly that is used for the gas well on-line measurement, and said plunger assembly comprises: instrument seating nipple assembly, plunger central tube, plunger sliding sleeve and vibration damper assembly; Wherein, instrument seating nipple assembly is positioned at the top of plunger assembly, and plunger central tube and plunger sliding sleeve constitute the main body of plunger assembly, and vibration damper assembly is positioned at the bottom of plunger assembly; Built-in measuring apparatus of instrument seating nipple assembly and communication module; When being used for gas well production; Plunger assembly comes and goes between well head and shaft bottom, constantly utilizes communication module to reach ground for analysis through the mode of wireless data transmission at well head the measuring apparatus data measured of down-hole.
Optional, in an embodiment of the utility model, said instrument seating nipple assembly comprises: fishing head, damping spring, pressure cap, seating nipple body, instrument combination, seating nipple sealing ring and seating nipple communication antenna.
Optional, in an embodiment of the utility model, said plunger central tube is a hollow structure, and the inlet opening that is uniformly distributed with is arranged at the bottom, and fluid hole is arranged at top, and top and bottom are helicitic texture, connect instrument seating nipple assembly and vibration damper assembly respectively.
Optional, in an embodiment of the utility model, said plunger sliding sleeve and plunger central tube connect together, and are matched in clearance, above the plunger sliding sleeve annular groove are arranged.
Optional, in an embodiment of the utility model, said vibration damper assembly comprises: damper body, yielding rubber ring, damper nut, decoupling rod, sealing nut, this body sealing ring and plunger end-face seal ring.
On the other hand; The utility model embodiment provides a kind of plunger liquid discharging gas producing system, and said plunger liquid discharging gas producing system comprises: lubricator assembly, pipeline threeway, electric switching valve, electronic controller, plunger, bottom damper, oil pipe stop, main valve, plunger arrive sensor, plunger catcher; Wherein, Built-in measuring apparatus of plunger and communication module; When being used for gas well production; Plunger comes and goes between well head and shaft bottom, constantly utilizes communication module to reach the built-in communication module of lubricator assembly for analysis through the mode of wireless data transmission at well head the measuring apparatus data measured of down-hole.
Optional, in an embodiment of the utility model, said lubricator assembly comprises: blowout prevention pipe cap, top sub, lubricator body, lubricator damping spring, lubricator yielding rubber cup, well head oil pipe, well head communication antenna and read write line joint.
Optional, in an embodiment of the utility model, said plunger comprises: instrument seating nipple assembly, plunger central tube, plunger sliding sleeve and vibration damper assembly; Wherein, instrument seating nipple assembly is positioned at the top of plunger, and plunger central tube and plunger sliding sleeve constitute the main body of plunger, and vibration damper assembly is positioned at the bottom of plunger.
Optional, in an embodiment of the utility model, said instrument seating nipple assembly comprises: fishing head, damping spring, pressure cap, seating nipple body, instrument combination, seating nipple sealing ring and seating nipple communication antenna.
Optional, in an embodiment of the utility model, said plunger central tube is a hollow structure, and the inlet opening that is uniformly distributed with is arranged at the bottom, and fluid hole is arranged at top, and top and bottom are helicitic texture, connect instrument seating nipple assembly and vibration damper assembly respectively; Said plunger sliding sleeve and plunger central tube connect together, and are matched in clearance, above the plunger sliding sleeve annular groove are arranged; Said vibration damper assembly comprises: damper body, yielding rubber ring, damper nut, decoupling rod, sealing nut, this body sealing ring and plunger end-face seal ring.
Technique scheme has following beneficial effect: can carry out on-line measurement, well logging, transfer of data and gas well production are carried out simultaneously, have cancelled the wireline logging operation.Whole system is simple in structure, and operating efficiency is high, and safety is good, need not implement closing well, has guaranteed the stable yields of gas well.This technology can be used for the liquid discharging gas producing operation of all kinds of gas wells, comprises 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.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the utility model embodiment plunger liquid discharging gas producing system architecture sketch map;
Fig. 2 is the plunger assembly structural representation that the utility model embodiment is furnished with the instrument seating nipple;
Fig. 3 is the piston structure sketch map of the utility model embodiment sliding sleeve when opening;
Fig. 4 is the piston structure sketch map of the utility model embodiment sliding sleeve when closing;
Fig. 5 is the utility model examples measure instrument seating nipple assembly structure sketch map;
Fig. 6 is the lubricator structural representation after the utility model embodiment improves;
Fig. 7 is the well head communication module structural representation in the utility model embodiment lubricator;
Fig. 8 is the utility model embodiment RFID Principle of Communication figure;
Fig. 9 is the block diagram that is electrically connected in the utility model embodiment instrument combination.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Low for the operating efficiency that solves the traditional cable logging technique, must close a well in, shortcoming such as poor stability, develop the novel gas lift plunger device that is embedded with measuring apparatus and communication module.This technology can be carried out on-line measurement, and well logging, transfer of data and gas well production are carried out simultaneously, have cancelled the wireline logging operation.Whole system is simple in structure, and operating efficiency is high, and safety is good, need not implement closing well, has guaranteed the stable yields of gas well.This technology can be used for the liquid discharging gas producing operation of all kinds of gas wells, comprises 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 shown in Figure 1; Be a kind of plunger liquid discharging gas producing of the utility model embodiment system architecture sketch map, said plunger liquid discharging gas producing system comprises: lubricator assembly 1, pipeline threeway 2, electric switching valve 3, electronic controller 4, plunger 5, bottom damper 6, oil pipe stop 7, main valve 8, plunger arrive sensor 9, plunger catcher 10; Wherein, Plunger 5 built-in measuring apparatus and communication modules; When being used for gas well production; Plunger 5 comes and goes between well head and shaft bottom, constantly utilizes the mode of communication module through wireless data transmission to reach the built-in communication module of lubricator assembly 1 for analysis at well head the measuring apparatus data measured of down-hole.
As shown in Figure 2, be the plunger assembly structural representation that the utility model embodiment is furnished with the instrument seating nipple, this plunger assembly is made up of instrument seating nipple assembly 11, plunger central tube 12, plunger sliding sleeve 13 and vibration damper assembly 14.Instrument seating nipple assembly 11 is positioned at the top of tool combinations, and plunger central tube 12 and plunger sliding sleeve 13 constitute the main body of plungers 5, and vibration damper assembly 14 is positioned at the bottom of tool combinations, when instrument falls to the shaft bottom, plays buffering and endergonic effect.Built-in measuring apparatus of instrument seating nipple assembly and communication module; When being used for gas well production; Plunger assembly comes and goes between well head and shaft bottom, constantly utilizes communication module to reach ground for analysis through the mode of wireless data transmission at well head the measuring apparatus data measured of down-hole.
Plunger central tube 12 is a hollow structure, and the inlet opening that is uniformly distributed with is arranged at the bottom, and fluid hole is arranged at top, and top and bottom are helicitic texture, connects instrument seating nipple assembly 11 and vibration damper assembly 14 respectively.Plunger sliding sleeve 13 connects together with plunger central tube 12, is matched in clearance, and the annular groove above the plunger sliding sleeve 13 is used for removing materials such as the interior sand of pit shaft, wax, dirt.Vibration damper assembly 14 mainly is made up of damper body 15, yielding rubber ring 16, damper nut 17, decoupling rod 18, sealing nut 19, this body sealing ring 20 and plunger end-face seal ring 21.Yielding rubber ring 16 can change other damping parts such as spring as required into.Damper nut 17 is used for regulating the pretightning force of yielding rubber ring 16; Sealing between damper body 15 and the plunger sliding sleeve 13 is born by this body sealing ring 20 and plunger end-face seal ring 21; Effect is after plunger sliding sleeve 13 is closed; Form good sealing between vibration damper assembly 14 and the plunger sliding sleeve 13, plunger 5 following fluids can not scurried to plunger 5 tops.
When the plunger instrument was positioned at the shaft bottom, plunger sliding sleeve 13 was in closed condition, and the liquid that can not above the plunger 5 gets into the bottom through plunger.When plunger 5 was up, because effect of inertia, plunger sliding sleeve 13 still was in closed condition (as shown in Figure 4), and guaranteeing has good separation interface between liquid and the gas below the plunger 5 of lifting.After the plunger instrument is caught by lubricator; Gas is by extraction, and the pressure of plunger 5 bottoms descends, under degradation acting in conjunction under bump and the pressure; Plunger central tube 12 falls; Plunger sliding sleeve 13 transfers open mode to, and the fluid of plunger 5 bottoms through inner channel flow to plunger 5 tops of plunger central tube 12, makes that downforce reaches balance on the plunger 5 by the direction of arrow shown in Figure 3.Behind closing well, plunger 5 gravitates and freely falling body is back to the shaft bottom with fast speeds carry out the lifting of next round liquid again.
Instrument seating nipple assembly 11 (as shown in Figure 5) is made up of fishing head 22, damping spring 23, pressure cap 24, seating nipple body 25, instrument combination 26, seating nipple sealing ring 27 and seating nipple communication antenna 28.Fishing head 22 adopts the structure that meets industry standard, and seating nipple body 25 external surfaces have inlet opening, for pressure sensor provides the measurement sample.Can be replaced with the sensor of other type according to field demand, the instrument in the instrument combination 26 comprises (like Fig. 8 and shown in Figure 9) such as various kinds of sensors, single-chip microprocessor MCU, RFID electronic tag, power supplys.Wherein, sensor, power supply are identical with sensor, power supply with existing oil field commonly used wireline logging.RFID is a kind of non-contact automatic identification technology that uses radio communication to realize, its basic functional principle is to utilize radiofrequency signal to pass through space coupling (electromagnetic induction or electromagnetic propagation) destination object is carried out recognition and tracking or carries out information exchange and communication with destination object.It is big that it has memory capacity, and antijamming capability is strong, reads distance and data and advantage such as can encrypt, and the utility model embodiment can applying RFID technology realizes the mode of wireless data transmission, but the utility model embodiment is not as limit.The RFID electronic tag is divided into active and passive two types.The fluid inlet hole is arranged at instrument combination 26 bottoms, and there is seating nipple sealing ring 27 at seating nipple body 25 middle parts, and effect is to prevent that the wellbore fluids of bottom from scurrying the communication module on top.Seating nipple body 25 external surfaces have annular working tube communication antenna 28, and effect is that the tubular antenna 37 with lubricator assembly 1 carries out exchanges data.The damping spring 23 at instrument combination 26 two ends and the effect of pressure cap 24 are that instrument combination 26 is carried out spacing, fixing and bumper and absorbing shock, avoid plunger 5 interior instrument when bump to lose efficacy.Instrument seating nipple assembly 11 links together through screw thread and plunger central tube 12.If desired the plunger instrument is carried out maintenance and repair, can drag for, act on the fishing head 22, just can take out plunger assembly is whole through being lowered to fishing tool to injection in fact.
Lubricator assembly 1 is formed (as shown in Figure 6) by blowout prevention pipe cap 29, top sub 30, lubricator body 31, lubricator damping spring 32, lubricator yielding rubber cup 33, well head oil pipe 34, well head communication antenna 35 and read write line joint 36.Top sub 30 is between blowout prevention pipe cap 29 and lubricator body 31.Well head communication antenna 35 is an annular, is welded in the inwall of top sub 30, and top sub 30 has radial hole, and read write line joint 36 is connected (as shown in Figure 7) through this hole with well head communication antenna 35.Read write line joint 36 other ends link to each other with the ground reader/writer module, and the inside of reader/writer module is formed as shown in Figure 8, and internal electric connects identical with prior art.Terraced structure below the well head communication antenna 35 carries out spacing to lubricator damping spring 32.All the other structures and the prior art of lubricator assembly 1 are basic identical.
When plunger assembly was rested in the lubricator by 1 seizure of lubricator assembly, the RFID electronic tag in the instrument combination 26 was started working.Read write line generates an electromagnetic field through well head communication antenna 35.If the RFID electronic tag is a passive type; After electronic tag gets into the electromagnetic field of read write line generation; Obtain energy through induced-current; And set up data transmission channel, and the data that are stored in the electronic tag are sent with the reflection modulation mode through seating nipple communication antenna 28, well head communication antenna 35 is accepted these data and is reached the ground reader/writer module.If the RFID electronic tag has Source Type; Electronic tag is after detecting the read-write requests of read write line; Initiatively send the signal of a certain frequency through seating nipple communication antenna 28; After read write line receives this signal through well head communication antenna 35, with its decoding and be sent to correlation module and handle.In this way, plunger instrument seating nipple 11 production dynamic data that plunger is measured in 5 last work periods and write down is sent to electronic controller 4.After transfer of data finished, instrument combination 26 transferred resting state under the instruction of electronic controller 4, to reduce the power supply energy consumption.There is conventional data-interface plunger instrument seating nipple 11 inside, so also can adopt the mode of wired connection to read and download the data of plunger instrument seating nipple 11 storages through plunger 5 is taken out from lubricator assembly 1.
The utility model provides the special-purpose pit shaft on-line measurement technology of a kind of plunger lift, designed the novel plunger assembly (as shown in Figure 2) of a kind of embedding sensor and wireless rf communication module (RFID).But the plunger 5 after this improvement adopts the plunger sliding sleeve 13 of switch, and this mechanism can accelerate the falling speed of plunger 5.Plunger 5 tops are instrument seating nipple 11, equipment such as built-in sensors, transmitter, sampling fluids appearance, wireless communication module, power supply.Instrument seating nipple 11 external surfaces have seating nipple communication antenna 28, in gas well lubricator inside well head communication antenna 36 are housed.When gas well was produced, plunger 5 came and went between well head and shaft bottom, constantly data such as the temperature of down-hole, pressure was reached ground in the mode of well head through wireless data transmission, supplied engineers and technicians to analyze.This technology has been cancelled the traditional cable logging mode; Avoided closing a well in, realized when not influencing the gas well ordinary production, carrying out logging operation, improved operating efficiency; Help improving the gas well well yield, help the raising of the stable yields and the economic benefit in gas field.
A certainly being used for 31/2 " plunger assembly (as shown in Figure 2) of oil pipe is made up of instrument seating nipple assembly 11, plunger central tube 12, plunger sliding sleeve 13 and vibration damper assembly 14.Instrument seating nipple assembly 11 is positioned at the top of tool combinations, and plunger central tube 12 and plunger sliding sleeve 13 constitute the main body of plungers 5, and vibration damper assembly 14 is positioned at the bottom of tool combinations.Plunger instrument maximum outside diameter 72mm, entire length 980mm.
Plunger central tube 12 is a hollow structure, and length is 570mm, maximum outside diameter 60mm, and the inlet opening that is uniformly distributed with is arranged at the bottom, and fluid hole is arranged at top, and top and bottom are helicitic texture, connect instrument seating nipple assembly 11 and vibration damper assembly 14 respectively.Plunger sliding sleeve 13 connects together with plunger central tube 12, is matched in clearance, and length 430mm, the annular groove above the plunger sliding sleeve 13 are used for removing materials such as the interior sand of pit shaft, wax, dirt.Vibration damper assembly 14 mainly is made up of damper body 15, yielding rubber ring 16, damper nut 17, decoupling rod 18, sealing nut 19, this body sealing ring 20 and plunger end-face seal ring 21, entire length 280mm, maximum outside diameter 68mm.Yielding rubber ring 16 can change other damping parts such as spring as required into.Damper nut 17 is used for regulating the pretightning force of yielding rubber ring 16, and the sealing between damper body 15 and the plunger sliding sleeve 13 is born by this body sealing ring 20 and plunger end-face seal ring 21.
Instrument seating nipple assembly 11 (as shown in Figure 5) is made up of fishing head 22, damping spring 23, pressure cap 24, seating nipple body 25, instrument combination 26, seating nipple sealing ring 27 and seating nipple communication antenna 28, entire length 370mm, maximum outside diameter 56mm.Fishing head 22 adopts the structure that meets industry standard, and seating nipple body 25 external surfaces have inlet opening, for pressure sensor provides the measurement sample.Instrument combination 26 length 230mm can adjust according to field demand, and the instrument in the instrument combination 26 comprises (like Fig. 8 and shown in Figure 9) such as pressure sensor, single-chip microprocessor MCU, RFID electronic tag, power supplys.Wherein, pressure sensor, power supply are identical with sensor, power supply with existing oil field commonly used wireline logging.Making up 26 bottoms has the fluid inlet hole, and there is seating nipple sealing ring 27 at seating nipple body 25 middle parts.Seating nipple body 25 external surfaces have annular working tube communication antenna 28.Instrument seating nipple assembly 11 links together through screw thread and plunger central tube 12.
Lubricator assembly 1 is formed (as shown in Figure 6) by blowout prevention pipe cap 29, top sub 30, lubricator body 31, lubricator damping spring 32, lubricator yielding rubber cup 33, well head oil pipe 34, well head communication antenna 35 and read write line joint 36.Top sub 30 is between blowout prevention pipe cap 29 and lubricator body 31.Well head communication antenna 35 is an annular, is welded in the inwall of top sub 30, and top sub 30 long 380mm, top sub 30 has radial hole, and read write line joint 36 is connected (as shown in Figure 7) through this hole with well head communication antenna 35.The other end of read write line joint 36 links to each other with the ground reader/writer module, and the inside of reader/writer module is formed as shown in Figure 8, and internal electric connects identical with prior art.Terraced structure below the well head communication antenna 35 carries out spacing to lubricator damping spring 32.All the other structures and the prior art of lubricator assembly 1 are basic identical.
The basic parameter of instrument combination 26 comprises: chargeable lithium ion power supply rated voltage 3.6v, pressure sensor highest measurement value 3000psi, memory span 256K, minimum sampling interval 5s, maximum sampling interval 35min.RFID electronic tag parameter is Source Type to be arranged, active working method, intermediate frequency frequency range, maximum transmission distance＜3m, channel width 200KHz, maximum transmission power 4W.
The utility model provides the novel plunger assembly of a kind of embedding sensor and wireless rf communication module (RFID), can satisfy the on-line measurement demand of natural gas plunger lift well.This technology has following characteristics: (1) need not the wireline logging operation: avoided gas well stopping production closing well; The whole plunger lift of duration of work system is in closed state; Do not worry accident generations such as blowout; Safety is good, is well suited for using in difficult management, the remote districts that are not suitable for manual work, such as Gobi desert, desert etc.; (2) well logging, communication and production are independent of each other: operating efficiency is high, the gas well stable yield, and data amount transmitted is big, can satisfy the requirement of all kinds of gas well dynamic analyses; (3) compliance is good: can be according to the measurement demand, and pack into different measurements and sampling instrument; (4) contactless communication mode (RFID): relatively simple for structure, volume is little, and memory data output is big; Read or write speed is fast; System power dissipation is low, and reliability is high, high-low temperature resistant (operating temperature range-25 ℃-100 ℃); Can be in the environment that greasy dirt, dust, sand, fouling are arranged steady operation, can bear bump to a certain degree; (5) plunger that hurtles down: the switch of plunger sliding sleeve 12 depends on the duty of plunger, and good airproof performance does not have complex mechanical construction, can improve the lifting efficiency of system by the plunger that hurtles down; (6) system maintenance is easy: the catcher through gas well mouth lubricator assembly 1 is caught plunger and is taken out, and changes instrument, power supply, and repairs work such as plunger; (7) remove tube inner wall sand, wax, dirt automatically: pumping in oil pipe when working through plunger, can effectively remove sand setting, fouling and wax in the pipe, cancelled independent next time working string, operating efficiency significantly improves.
This technology has overcome the shortcoming of existing gas well wireline logging; Avoided closing a well in; Plunger recovers stage system at the pressure of wellbore bottom and accomplishes the measurement operation automatically, and plunger rests on the well head lubricator to carry out the liquid discharging gas producing stage system and accomplish exchanges data automatically, and during the plunger up-downgoing, can carry out the removing operation of impurity in the pit shaft; A kind of downhole tool can satisfy multiple on-the-spot needs, and operating efficiency improves greatly.This technology helps the raising of gas well well yield, helps the raising of the stable yields and the economic benefit in gas field.
Those skilled in the art can also recognize the various illustrative components, blocks (illustrative logical block) that the utility model embodiment lists, and unit and step can be passed through electronic hardware, computer software, or both combinations realize.Be the clear replaceability (interchangeability) of showing hardware and software, above-mentioned various illustrative components (illustrative components), unit and step have been described their function generally.Such function is to realize depending on the designing requirement of certain applications and whole system through hardware or software.Those skilled in the art can be for every kind of certain applications, and can make ins all sorts of ways realizes described function, but this realization should not be understood that to exceed the scope of the utility model embodiment protection.
Various illustrative logical block described in the utility model embodiment; Or the unit can pass through general processor, digital signal processor, special IC (ASIC); Field programmable gate array (FPGA) or other programmable logic device; Discrete gate or transistor logic, discrete hardware components, or the design of above-mentioned any combination realizes or operates described function.General processor can be microprocessor, and alternatively, this general processor also can be any traditional processor, controller, microcontroller or state machine.Processor also can realize through the combination of calculation element, for example digital signal processor and microprocessor, a plurality of microprocessors, Digital Signal Processor Core of one or more microprocessors associatings, or any other similarly configuration realize.
The method described in the utility model embodiment or the step of algorithm can directly embed hardware, the software module of processor execution or the two combination.Software module can be stored in the storage medium of other arbitrary form in RAM memory, flash memory, ROM memory, EPROM memory, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area.Exemplarily, storage medium can be connected with processor, so that processor can read information from storage medium, and can deposit write information to storage medium.Alternatively, storage medium can also be integrated in the processor.Processor and storage medium can be arranged among the ASIC, and ASIC can be arranged in the user terminal.Alternatively, processor and storage medium also can be arranged in the various parts in the user terminal.
In one or more exemplary designs, the described above-mentioned functions of the utility model embodiment can realize in hardware, software, firmware or this three's combination in any.If in software, realize, these functions can be stored on the media with computer-readable, or are transmitted on the media of computer-readable with one or more instructions or code form.The computer-readable media comprises that the computer storage medium lets computer program transfer to other local telecommunication media from a place with being convenient to make.Storage medium can be the useable medium that any general or special computer can access.For example; Such computer readable media can include but not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, or other any can be used to carry or store with instruction or data structure and other can be read the media of the program code of form by general or special computer or general or special processor.In addition; Any connection can suitably be defined as the computer-readable media; For example, if software is through a coaxial cable, optical fiber computer, twisted-pair feeder, Digital Subscriber Line (DSL) or also being comprised in the defined computer-readable media with wireless mode transmission such as for example infrared, wireless and microwaves from a web-site, server or other remote resource.Described video disc (disk) and disk (disc) comprise Zip disk, radium-shine dish, CD, DVD, floppy disk and Blu-ray Disc, and disk is usually with the magnetic duplication data, and video disc carries out the optical reproduction data with laser usually.Above-mentioned combination also can be included in the computer-readable media.
The above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; And be not used in the protection domain that limits the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. a plunger assembly that is used for the gas well on-line measurement is characterized in that, said plunger assembly comprises: instrument seating nipple assembly (11), plunger central tube (12), plunger sliding sleeve (13) and vibration damper assembly (14); Wherein, instrument seating nipple assembly (11) is positioned at the top of plunger assembly, and plunger central tube (12) and plunger sliding sleeve (13) constitute the main body of plunger assembly, and vibration damper assembly (14) is positioned at the bottom of plunger assembly; Built-in measuring apparatus of instrument seating nipple assembly (11) and communication module; When being used for gas well production; Plunger assembly comes and goes between well head and shaft bottom, constantly utilizes communication module to reach ground for analysis through the mode of wireless data transmission at well head the measuring apparatus data measured of down-hole.
2. plunger assembly according to claim 1; It is characterized in that said instrument seating nipple assembly (11) comprising: fishing head (22), damping spring (23), pressure cap (24), seating nipple body (25), instrument combination (26), seating nipple sealing ring (27) and seating nipple communication antenna (28).
3. plunger assembly according to claim 1 is characterized in that said plunger central tube (12) is a hollow structure; The inlet opening that is uniformly distributed with is arranged at the bottom; Fluid hole is arranged at top, and top and bottom are helicitic texture, connects instrument seating nipple assembly (11) and vibration damper assembly (14) respectively.
4. plunger assembly according to claim 1 is characterized in that, said plunger sliding sleeve (13) connects together with plunger central tube (12), is matched in clearance, and the plunger sliding sleeve has annular groove above (13).
5. plunger assembly according to claim 1; It is characterized in that said vibration damper assembly (14) comprising: damper body (15), yielding rubber ring (16), damper nut (17), decoupling rod (18), sealing nut (19), this body sealing ring (20) and plunger end-face seal ring (21).
6. plunger liquid discharging gas producing system; It is characterized in that said plunger liquid discharging gas producing system comprises: lubricator assembly (1), pipeline threeway (2), electric switching valve (3), electronic controller (4), plunger (5), bottom damper (6), oil pipe stop (7), main valve (8), plunger arrive sensor (9), plunger catcher (10); Wherein, Built-in measuring apparatus of plunger (5) and communication module; When being used for gas well production; Plunger (5) comes and goes between well head and shaft bottom, constantly utilizes communication module to reach the built-in communication module of lubricator assembly (1) for analysis through the mode of wireless data transmission at well head the measuring apparatus data measured of down-hole.
7. like the said plunger liquid discharging gas producing of claim 6 system; It is characterized in that said lubricator assembly (1) comprising: blowout prevention pipe cap (29), top sub (30), lubricator body (31), lubricator damping spring (32), lubricator yielding rubber cup (33), well head oil pipe (34), well head communication antenna (35) and read write line joint (36).
8. like the said plunger liquid discharging gas producing of claim 6 system, it is characterized in that said plunger (5) comprising: instrument seating nipple assembly (11), plunger central tube (12), plunger sliding sleeve (13) and vibration damper assembly (14); Wherein, instrument seating nipple assembly (11) is positioned at the top of plunger, and plunger central tube (12) and plunger sliding sleeve (13) constitute the main body of plunger, and vibration damper assembly (14) is positioned at the bottom of plunger.
9. like the said plunger liquid discharging gas producing of claim 8 system; It is characterized in that said instrument seating nipple assembly (11) comprising: fishing head (22), damping spring (23), pressure cap (24), seating nipple body (25), instrument combination (26), seating nipple sealing ring (27) and seating nipple communication antenna (28).
10. like the said plunger liquid discharging gas producing of claim 8 system, it is characterized in that said plunger central tube (12) is a hollow structure; The inlet opening that is uniformly distributed with is arranged at the bottom; Fluid hole is arranged at top, and top and bottom are helicitic texture, connects instrument seating nipple assembly (11) and vibration damper assembly (14) respectively; Said plunger sliding sleeve (13) connects together with plunger central tube (12), is matched in clearance, and the plunger sliding sleeve has annular groove above (13); Said vibration damper assembly (14) comprising: damper body (15), yielding rubber ring (16), damper nut (17), decoupling rod (18), sealing nut (19), this body sealing ring (20) and plunger end-face seal ring (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201826025U CN202152676U (en) | 2011-06-01 | 2011-06-01 | Plunger device for online measurement of gas wells and plunger liquid discharging and gas production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201826025U CN202152676U (en) | 2011-06-01 | 2011-06-01 | Plunger device for online measurement of gas wells and plunger liquid discharging and gas production system |
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| Publication Number | Publication Date |
|---|---|
| CN202152676U true CN202152676U (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201826025U Expired - Lifetime CN202152676U (en) | 2011-06-01 | 2011-06-01 | Plunger device for online measurement of gas wells and plunger liquid discharging and gas production system |
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| CN (1) | CN202152676U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102808607A (en) * | 2011-06-01 | 2012-12-05 | 中国石油天然气股份有限公司 | Plunger device for gas well online measurement and plunger type drainage gas recovery system |
| CN104453790A (en) * | 2013-09-12 | 2015-03-25 | 江汉视博康帕思石油技术（武汉）有限公司 | Water drainage and gas collection device with plunger |
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- 2011-06-01 CN CN2011201826025U patent/CN202152676U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102808607A (en) * | 2011-06-01 | 2012-12-05 | 中国石油天然气股份有限公司 | Plunger device for gas well online measurement and plunger type drainage gas recovery system |
| CN104453790A (en) * | 2013-09-12 | 2015-03-25 | 江汉视博康帕思石油技术（武汉）有限公司 | Water drainage and gas collection device with plunger |
| CN104806229A (en) * | 2015-04-01 | 2015-07-29 | 西南石油大学 | Plunger gas-lift drainage/gas production logging system and control method thereof |
| CN104806229B (en) * | 2015-04-01 | 2017-07-18 | 西南石油大学 | Plunger lift water pumping gas production production logging system and its control method |
| CN106761582A (en) * | 2017-02-07 | 2017-05-31 | 陕西航天德林科技集团有限公司 | A kind of plunger lift drainage arrangement |
| CN108222890A (en) * | 2018-03-09 | 2018-06-29 | 中国石油大学(华东) | A kind of preset tubing string pneumatic type drainage gas production tool |
| CN108843281A (en) * | 2018-06-04 | 2018-11-20 | 西安交通大学 | A kind of calculation method of column plunger lift drain efficiency |
| CN110593820A (en) * | 2019-08-07 | 2019-12-20 | 中国石油天然气股份有限公司 | Liquid drainage and gas production device and gas well liquid drainage method |
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Granted publication date: 20120229 |