CN102094803A - Multifunctional sucker-rod pump hoisting simulation test system - Google Patents
Multifunctional sucker-rod pump hoisting simulation test system Download PDFInfo
- Publication number
- CN102094803A CN102094803A CN 201010559969 CN201010559969A CN102094803A CN 102094803 A CN102094803 A CN 102094803A CN 201010559969 CN201010559969 CN 201010559969 CN 201010559969 A CN201010559969 A CN 201010559969A CN 102094803 A CN102094803 A CN 102094803A
- Authority
- CN
- China
- Prior art keywords
- pump
- test
- valve
- oil well
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The embodiment of the invention provides a multifunctional sucker-rod pump hoisting simulation test system which comprises an electro-hydraulic proportion hoisting drive control system, an inclination angle simulation system, a mechanical connecting system, a circulation process system, a data acquisition system and a data control system. According to the embodiment of the invention, the defects of the existing test system can be overcome, the performance test of sucker-rod oil well pumps of a straight well, a deviated well, a directional well and a horizontal well can be carried out, the performance test requirement of an oil field oil-well pump can be satisfied, and scientific detection data can be provided for novel oil-well pumps used under the well.
Description
Technical field
The present invention relates to mechanical oil recovery testing installation field in the oil development industry, particularly a kind of multi-functional rod pump lifting simulation experiment system carries out testing property to the rod pumping pump of straight well, inclined shaft, directional well and horizontal well.
Background technique
Rod pumping pump is as the important lifting equipment in oil field, and its performance directly has influence on the output and the economic benefit in oil field.For test evaluation improves the every technical performance of oil well pump, reliable test data is provided for novel oil well pump research and development, need the multi-functional rod pump lifting simulation experiment system of a cover, the simulation oil field actual conditions solves the every testing property of full pump footpath scope oil well pump.
Daqing Petroleum Institute has developed " deep-well pump-pumping unit testing apparatus " in 1990～1994 years, this device stroke is respectively 0.5m, 0.9m and three grades of 1.2m are adjustable, the manual metering of parameters such as pressure, flow, and the maximum pressure of system is no more than 0.3MPa.
University of Petroleum and Zhongyuan Petroleum Exploration Bureau are united and have been set up opening oil production technology experimental station, oil well pump can be worked in 50 °～90 ° inclination angle scopes, the maximum stroke 0.6m of test pump, pump discharge maximum pressure 1.0MPa, when doing the oil pumping test, beam pumping unit of floor mounted.Although this device can be simulated oil well pump performance test under certain inclination angle, the device allomeric function is single, belongs to the simple type testing apparatus.
Oil Mined Technology Research Inst., Shengli Oil Field and University of Petroleum nineteen ninety-five joint research and development and built one the cover " horizontal well oil pump simulation test device ", because the control gear work coordination is poor, therefore this device fails to run well always, does not also see the relevant report that it is successfully tested.
2004, Daqing Petroleum Institute applies horizontal well technology at Daqing oil field and has developed a cover " rod pump lifting simulation ground experiment system ", oil well pump performance test and the hydraulic characteristic Changing Pattern of oil well pump under certain inclination angle can be studied by this system, but full pump footpath testing property can not be done by this system; Stroke can not be realized stepless adjustable, and maximum stroke only is 3m; Can not do test such as the multiple flow that contains sand.The test data of gathering is not comprehensive, causes test data and creation data to differ bigger, can't carry out careful research comprehensively to oil well pump.
Thus in realizing process of the present invention, the inventor finds that the defective of prior art is: the pump footpath covering scope that existing rod pump dynamic analog test system or device can be tested pump is incomplete, can not satisfy the research and development demand of thickened oil recovery, can't carry out the indoor performance test to high temperature resistant large discharge pump, for example Special Pumps such as used Φ 140 oil well pumps, Φ 120 oil well pumps just can't carry out testing property to it in the viscous crude SAGD recovery process; Can't carry out testing property to sand control class oil well pump; And the pump intake outlet pressure scope of simulation is little; In addition, can not realize the remote transmission of test data and control etc.
Summary of the invention
The embodiment of the invention provides a kind of multi-functional rod pump lifting simulation experiment system, and purpose is the rod pumping pump of straight well, inclined shaft, directional well and horizontal well is carried out testing property.
For achieving the above object, the embodiment of the invention provides a kind of multi-functional rod pump lifting simulation experiment system, and this system comprises: electric-hydraulic proportion promotes driving control system, inclination angle analog system, mechanical linkage system, circulation process system and data capture and control system;
Electric-hydraulic proportion promotes driving control system provides linear reciprocating motion for the test of oil well pump dynamic performance power; The inclination angle analog system realizes that the angle of pump barrel and vertical line changes in 0 ° to 90 ° scope; The down-hole actual conditions of circulation process system simulation oil well pump is realized the testing property of oil well pump; Mechanical linkage system is fixed on oil well pump on the supporting frame, the actual loaded operating mode of simulation oil well pump, and the suction of proof test medium, discharge, motive sealing, and in process of the test the stability of elongated polished rod; Data capture and control system are gathered, are calculated and handle data.
The beneficial effect of the embodiment of the invention is, by multi-functional rod pump lifting simulation experiment system, can overcome the defective of existing pilot system, can carry out testing property to the rod pumping pump of straight well, inclined shaft, directional well and horizontal well, satisfy the testing property demand of oil pump, the oil well pump of newly going into the well is provided the detection data of science.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is the overall structure instance graph of multi-functional rod pump lifting simulation experiment system in the embodiment of the invention;
Fig. 2 is the structure example figure that electric-hydraulic proportion promotes driving control system in the embodiment of the invention;
Fig. 3 is the structure example figure of inclination angle analog system in the embodiment of the invention;
Fig. 4 is the structure example figure of circulation process system in the embodiment of the invention;
Fig. 5 is the structure example figure of mechanical linkage system in the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the embodiment of the invention is described in further detail below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
The embodiment of the invention provides a kind of multi-functional rod pump lifting simulation experiment system, and described multi-functional rod pump lifting simulation experiment system comprises: electric-hydraulic proportion promotes driving control system, inclination angle analog system, mechanical linkage system, circulation process system and data capture and control system; Wherein,
Electric-hydraulic proportion promotes driving control system provides linear reciprocating motion for the test of oil well pump dynamic performance power; The inclination angle analog system realizes that the angle of pump barrel and vertical line changes in 0 ° to 90 ° scope; Mechanical linkage system is fixed on oil well pump on the supporting frame, the actual loaded operating mode of simulation oil well pump, and the suction of proof test medium, discharge, motive sealing, and in process of the test the stability of elongated polished rod; The down-hole actual conditions of circulation process system simulation oil well pump is realized the testing property of oil well pump; Data capture and control system are gathered, are calculated and handle data.
Fig. 1 is the overall structure instance graph of multi-functional rod pump lifting simulation experiment system in the embodiment of the invention.As shown in Figure 1, section 1 is that electric-hydraulic proportion promotes driving control system; Part 2 is inclination angle analog system and mechanical linkage system; The 3rd part is the flow process circulatory system; Data capture and control system are distributed in 1,2,3 parts.
By above-mentioned multi-functional rod pump lifting simulation experiment system, can overcome the defective of existing pilot system, can satisfy the testing property demand of oil pump, the oil well pump of newly going into the well is provided the detection data of science; And, can limit parameter detecting to big parameter pump, the old oil well pump that uses or keeped in repair is carried out Performance Detection and evaluation; In addition, also can carry out the performance comparison test, provide possibility for studying the following Efficiency of Sucker Rod pumps influence factor of working of different medium differing tilt angles and the research of the pump valve characteristics of motion to the oil well pump of different structure, different manufacturers.
In the present embodiment, particularly, electric-hydraulic proportion promotes the control mode that driving control system adopts double pump feed flow, proportional reversing valve, can obtain speed controlling effect preferably thus.Electric-hydraulic proportion promotes driving control system and specifically comprises: power source part, valve control part, hydraulic counterweight part, actuator's part and manual drives part.
In the power source part:
Adopt small one and large one double pump central fluid supply, needs according to the stroke jig frequency, select different opening ways (little pump, big pump, little pump+big pump), the pump discharge flow is regulated automatically according to the flow system flow needs, to reduce the overflow of unnecessary flow, help cutting down the consumption of energy, reducing heating, reach energy-conservation effect.
And; each pump discharge all is furnished with relief valve and uses as safety valve; can limit the pump discharge pressure grade; do not bear excess pressure with the protection pump; avoid damaging; simultaneously the unloading function that can carry by relief valve carries out off-load to pressure oil when proportional reversing valve is in meta or in case of emergency.
In valve control part:
Core component is the 3-position 4-way proportional reversing valve, by the direction that this Proportional valve can be regulated oil circuit according to the break-make of electromagnet, can accurately regulate the flow of oil circuit again according to the size of input current or voltage, to reach the effect of actuator being carried out stepless speed regulation.
When oil cylinder is in propradation, the energising of the 1YA electromagnet of Proportional valve work, Proportional valve is operated in position, a left side, and outlet pressure oil enters the rodless cavity of master cylinder, and it is up to promote load, and accumulator fuel feeding to the counterweight chamber of composite cylinder provides additional drives power;
When oil cylinder is in when stopping layer state, the 1YA electromagnet outage of Proportional valve work this moment, Proportional valve is operated in meta, and main pump motor is shut down or by the relief valve off-load simultaneously;
When oil cylinder is in downstream state, the energising of the 2YA electromagnet of Proportional valve work, Proportional valve is operated in right position, and outlet pressure oil enters the rod chamber of master cylinder, and it is descending to promote load, drives in the past accumulator in composite cylinder counterweight chamber oil-filled simultaneously.
In the hydraulic counterweight part:
Utilize the hydraulic counterweight of accumulator as carrier, have than traditional mechanical counterweight that volume is little, flexible, safety coefficient is high, can reduce outstanding advantages such as installed power, according to calculating, adopt hydraulic counterweight, installed power can reduce near half, thereby can greatly reduce cost, reduce unnecessary energy consumption.
When oil cylinder was in upstroke, accumulator produced thrust to the oil extraction of composite cylinder counterweight chamber, and when oil cylinder was in down stroke, the fluid in composite cylinder counterweight chamber recharged toward accumulator, so periodic duty.
Simultaneously, for the problem of fluid internal leakage, accumulator also is furnished with a cover recharging oil device, can carry out repairing to it when the accumulator working pressure descends, to keep normal working pressure class.
In actuator's part:
Be made up of two composite cylinders, composite cylinder is the particular design cylinder, and every composite cylinder is made of three cavitys.When fluid entered the composite cylinder cavity of resorption, piston rod was up, and when fluid entered on the composite cylinder, piston rod was descending; The up thrust of leaning on the discharge fluid of accumulator in the counterweight chamber of composite cylinder, descending drive by main cylinder piston-rod.Oil cylinder also is equipped with external displacement transducer, position limit switch etc., can transmit the related work status information to control system.
In the manual drives part:
Manual drives part only causes driving oil circuit at outage or other reasons can't drive the composite cylinder action, and uses under the situation that needs the composite cylinder position to finely tune.Under the state that Weighting system connects, manual pump can only drive the composite cylinder retraction.
Manually the power of oil circuit is provided by manual pump, and the discharge capacity that manual pump whenever shakes once is 90ml, the corresponding mobile about 10mm of composite cylinder.This part is the Redundancy Design of system.
At control section:
Mainly possess control and monitor two big functions.According to the actual conditions needs,, can realize the automatic stepless control of stroke and jig frequency by regulating control metering pump and Proportional valve; Utilize various kinds of sensors can show working staties such as pressure, flow, temperature in real time, play the effect of real-time monitoring; Overpressure, stroke is excessive, temperature rise exceeds standard or other in emergency circumstances, can send alarm signal automatically, forced stoppage automatically promotes the safety of drive system to guarantee electric-hydraulic proportion in case of necessity.
Fig. 2 is the structure example figure that electric-hydraulic proportion promotes driving control system in the embodiment of the invention.As shown in Figure 2, this electric-hydraulic proportion lifting driving control system comprises: fuel tank 1, oil suction filter 2, plunger pump 3, motor 4, one-way valve 5, pilot operated compound relief valve 6, in-line filter 7, pressure gauge 8, pressure transducer 9, proportional reversing valve 10, hand-operated direction valve 11, hand pump 12, forced air cooler 13, direct-acting overflow valve 14, hand stop valve 15, bladder type hydropneumatic accumulator 16, oil hydraulic cylinder 17, high-pressure ball valve 18, pressure relay 19 and safety valve 20.
In the present embodiment, particularly, the inclination angle analog system mainly comprises: stand, vertical guide, electric wire hoist, electric wire hoist support, vertical coaster, horizontal guide rail, fleeting tackle, supporting frame, inclination angle locking framework, slope device and hydraulic station.
Wherein, the supporting frame two ends use hinge support respectively on vertical coaster and fleeting tackle.When electric wire hoist drives when moving up and down in the vertical guide of vertical coaster in stand, fleeting tackle just moves horizontally on horizontal guide rail, and the inclination angle of supporting frame changes thereupon.Oil well pump is rigidly fixed on the supporting frame, and parallel with it.Therefore, the pump barrel inclination angle is identical with the inclination angle of supporting frame, relies on the inclination angle analog system can realize that the angle of pump barrel and vertical line changes in 0 °～90 ° scopes.
The working principle of inclination angle analog system is: when supporting frame is in vertical position, the angle of pump barrel and vertical line is 0 °, unclamp the inclination angle locking framework on the fleeting tackle this moment, slowly transfer electric hoist, fleeting tackle is descending along the slope, whole supporting frame falls, arrive certain inclination angle after, supporting frame and on equipment will rely on the effect of gravity and transfer voluntarily.After reaching desired inclination angle, fleeting tackle is locked, thereby realized locking, can carry out the experiment work of oil well pump then supporting frame with the inclination angle locking framework.
When supporting frame from horizontal position when the vertical position hoists, process is with last opposite, the electric wire hoist that hoists, the inclination angle of supporting frame increases gradually, when inclination angle during near the vertical position, fleeting tackle is climbed up the slope, is the ready for operation of transferring of next time.
Also be provided with inclination angle locking framework and slope device in the analog system of inclination angle.The effect of inclination angle locking framework is when carrying out the oil well pump test under a certain inclination angle, to realize the reliable locking to supporting frame; The effect of slope device is to guarantee when transfer the vertical position, supporting frame and on equipment can rely on the effect of gravity to fall voluntarily, simplify removing operation.Hydraulic station provides power, by the switching controls of hydraulic circuit, can realize the function such as locking, maintenance, release of inclination angle locking system.
Fig. 3 is the structure example figure of inclination angle analog system in the embodiment of the invention.As shown in Figure 3, this inclination angle analog system comprises: electric wire hoist support 301, electric wire hoist 302, stand 303, vertical guide 304, vertical coaster 305, supporting frame 306, test pump 307, horizontal guide rail 308, slope 309, inclination angle locking framework 310, fleeting tackle 311 and hydraulic station 312.
In the present embodiment, particularly, the circulation process system comprises: liquid container, measuring tank, manually operated valve, mortor operated valve, feed flow screw pump, inlet flow rate meter, rate of discharge meter, inlet electric control valve, outlet electric control valve, and entrance and exit accumulator group, static mixer, pipeline mounted pump and high-pressure air source etc.
Fig. 4 is the structure example figure of circulation process system in the embodiment of the invention.As shown in Figure 4, further, manually operated valve is 7, i.e. SF I～SF VII; Mortor operated valve is 7, i.e. DF I～DF VII; The feed flow screw pump is two; Inlet flow rate is counted two; Rate of discharge is counted two; The outlet electric control valve is two.
Oil well pump inlet pressure regulating method is: start selected screw pump and pour into test(ing) medium in oil well pump to be tested, the test(ing) medium discharge capacity of screw pump perfusion must be greater than the oil pumping pump delivery, realizes adjusting to oil well pump inlet pressure (being pump intake pressure) by the aperture of regulating the inlet electric control valve.
Simultaneously, in order to stablize the flow of intake system, also for the adjusting of pump intake pressure with stable, be provided with inlet accumulator group at the exhaust end of solution feed pump, can replenish not enough liquid measure or store unnecessary liquid measure according to the size of oil well pump required flow in process of the test.
Further, in order to realize big changes in flow rate scope (49～500m
3/ pressure range big in d) (regulate, and is provided with two cover motorized adjustment control valve units, and keep the stable of rate of discharge with the outlet accumulator, to improve the precision and the stability of outlet pressure adjusting by 0～15MPa) pressure.
Can realize that by this flow process circulatory system routine is not simulated the test of inlet pump intake pressure, the test of conventional simulation inlet pump intake pressure, aerating is tested and add sand test.Wherein,
The conventional operating method of not simulating the test of inlet pump intake pressure is: open manually operated valve SF I, close manually operated valve SF II, do not start the feed flow screw pump.At this moment, oil well pump is inhalation test medium from liquid container directly, does not simulate the inlet pump intake pressure.
The operating method of conventional simulation inlet pump intake pressure test is: close manually operated valve SF I, open manually operated valve SF II, according to the displacement size of detected oil well pump, select starting 1# feed flow screw pump (opening manually operated valve SF III), perhaps start 2# feed flow screw pump (opening manually operated valve SF IV).Displacement size according to detected oil well pump, select 1# inlet flow rate meter (open mortor operated valve DF I, close mortor operated valve DF II) or 2# inlet flow rate meter (open mortor operated valve DF II, close mortor operated valve DF I) for use, open manually operated valve SF V simultaneously, close manually operated valve SF VI and manually operated valve SF VII.The flow that sucks the test(ing) medium of oil well pump is measured by selected inlet electromagnetic flowmeter.
The operating method of aerating test is: close manually operated valve SF V, open manually operated valve SF IV, manually operated valve SF VII, according to the size of the pump intake pressure of being simulated, by the pressure of pressure regulator valve adjusting source of the gas, realize the mixing of gas, liquid by static mixer.Other processs of the test are identical with routine test.
The operating method that adds sand test is identical with the operating method of routine test.Just before test, in supply tank, add additive and a certain amount of test sand of a certain amount of increase dielectric viscosity, and stir with stirrer.
In the present embodiment, the effect of mechanical linkage system is, oil well pump is fixed on the supporting frame, the actual loaded operating mode of simulation oil well pump, and the suction of proof test medium, discharge, motive sealing, and in process of the test the stability of elongated polished rod.
Particularly, this system mechanics connects and comprises that two large divisions, first portion are suction, discharge and the motive sealing parts of the fixing and test(ing) medium of oil well pump, and another part is that power loads and polished rod is set upright part.Wherein,
Further, suction, discharge and the motive sealing part of the fixing and test(ing) medium of this oil well pump specifically comprise: fixing device, righting device, transition pipe nipple, articulated pump barrel connector, Highpressure Tee, motive sealing etc.
The cylindrical shell of oil well pump is connected with fixing device with articulated pump barrel connector by transition pipe nipple in the suction side, bears the thrust load that produces in the process of the test by fixing device, and test(ing) medium imports in the oil well pump by fixing device simultaneously; The cylindrical shell of oil well pump is connected with dynamic seal apparatus by transition pipe nipple, Highpressure Tee at exhaust end, and test(ing) medium is derived from Highpressure Tee, the motive sealing in the dynamic seal apparatus proof test process.
Further, this power loads and polished rod is set upright part, specifically comprises: power blocks, loading crossbeam, loading bolt, tension-compression sensor, articulated polished rod connector, polished rod, polished rod positioning device, and set upright coaster and righting block thereof etc.
Load crossbeam and drive the power blocks motion, by loading bolt, tension-compression sensor, articulated polished rod connector, it is reciprocating to drive polished rod.Wherein setting upright coaster designs in order to prevent polished rod unstability elongated in down stroke, set upright coaster by the servo-actuated that compound rope sheave mechanism forms, all the time be in the neutral position of the polished rod that stretches out, the move distance of just setting upright coaster is half of power blocks forever, thereby guarantees that polished rod can unstability in movement process.
Fig. 5 is the structure example figure of mechanical linkage system in the embodiment of the invention.As shown in Figure 5, this mechanical linkage system comprises: power blocks 501, load crossbeam 502, tension-compression sensor 503, polished rod connector 504, motive sealing 505, transition pipe nipple 506, righting device 507, transition pipe nipple 508, pump barrel connector 509, loading bolt 510, polished rod positioning device 511, set upright coaster 512, righting block 513, polished rod 514, Highpressure Tee 515, oil well pump 516 and fixing device 517.
In the present embodiment, particularly, the major parameter that need gather of data capture and control system comprises: polished rod load, suspension point displacement, pump discharge pressure, pump inlet pressure, actual flow, test(ing) medium temperature, add throughput, add data such as atmospheric pressure collection, handle and control.
Further, polished rod load sensor and suspension point displacement transducer are with polished rod load, suspension point displacement signal, convert 4～20mA electrical signal to, convert digital signal to through ADAM-4117 data acquisition module 1, enter control computer by the RS485 address card, finish the computer screen demonstration and the data processing of survey data again by testing software.
Parameters such as pump discharge flow, pump intake flow, gas flow, gas pressure are detected by corresponding sensor, convert digital signal to through ADAM-4117 data acquisition module 2, enter control computer by the RS485 address card, finish the computer screen demonstration and the data processing of survey data again by testing software.
Parameter such as pump discharge pressure, pump inlet pressure is detected by corresponding pressure transducer, realize the data display of operating console panel respectively by XMT-3 intelligent digital control instrument, and finish the control corresponding function, send Out let that detected data are sent into the RS485 address card by the RS485 change of instrument itself simultaneously, enter control computer is finished survey data again by testing software computer screen demonstration and data processing.
And, the delivery side of pump flow also can measure by measuring tank, after liquid level sensor carries out conversion with liquid level signal, send into XMG-2G type intelligent digital controller, after conversion, send Out let to send into the RS485 address card by the RS485 change of instrument itself liquid level numerical value, enter control computer, structural parameter of being irritated according to metering by testing software and metering time etc. are finished the conversion of data on flows again, are presented on the computer screen then and finish corresponding data processing.
In addition, the temperature of test(ing) medium is detected by temperature transducer, be transferred to XM908-3 type intelligent digital controller, finish the heat control that adds of medium, becoming through the RS485 of instrument itself simultaneously send Out let to send into the RS485 address card, enter control computer, carrying out corresponding data processing by testing software again.Machine data collection as calculated, calculating and processing obtain the various performance parameters of oil well pump and the indicator diagram of oil well pump at last.
In the present embodiment, at first, pump to be detected can be fixed on the supporting frame, utilize electric wire hoist to adjust the angle of inclination angle analog system and lock; Secondly, connect the connecting line of pump to be detected and flow system, and set the pipeline flow process of circulation process system, start the electric-hydraulic proportion driving control system and drive test pump and move reciprocatingly according to the stroke jig frequency of setting according to experiment process; Simultaneously, regulate parameters such as test pump inlet pressure, outlet pressure by data capture and control system, wait to regulate the collection, storage, output report and the indicator diagram that carry out critical data behind the parameter stability.
In the present embodiment, the oil well pump outlet pressure reaches as high as 15MPa, and PIP is controlled between normal pressure～3.0MPa; Oil pump plunger piston stroke 1～5m is adjustable continuously, and jig frequency is stepless adjustable between 1～6; The pump barrel inclination angle is adjustable at 0 °～90 ° scope internal classifications, and 10 ° is a grade; The test(ing) medium temperature is control arbitrarily in ℃ scope of room temperature～90.
And, can gather parameters such as oil well pump suction port flow, discharge flow rate, suction pressure, outlet pressure, exhaust port fluid temperature, stroke, polished rod load, gas pressure and gas flow simultaneously, image data is more complete; According to image data, utilize the software of being worked out to calculate suspension point jig frequency, pump displacement coefficient, suspension point speed and acceleration, and draw oil well pump flow curve and suspension point indicator diagram.
And, adopt hydraulic system to drive oil well pump work, power is big, can satisfy the test requirements document of big pump such as Φ 140 oil well pumps, Φ 120 oil well pumps; Adopt two-speed electric block and slope device, guaranteed the steady, smooth and easy of tilt adjustment process, and simple to operate, easy row; Adopt half way servo-actuated righting device, can guarantee that centralizer body is in 1/2nd places of stretching out the pump barrel polished rod all the time, effectively prevents the polished rod unstability.
In addition, develop oil well pump polished rod high pressure seal, adopted the twin-stage sealing, can satisfy the high pressure sealing requirement of 15MPa; At oil pumping pump intake and exhaust port accumulator is installed, Pump Suction Nozzle and outlet pressure can be kept relative stability; Discharge flow rate can be used electromagnetic flowmeter metering and two kinds of metering methods of measuring tank autoweighing, and the switching of flow process has realized telecontrol, is convenient to operation.
And a whole set of pilot system is reliable and stable, during equipment debugging, has carried out up to a hundred tests altogether.From process of the test, the Mechanical Reliability height of device, data recording is stable, can satisfy the needs that the oil well pump science detects well.
In the present embodiment, by above-mentioned multi-functional rod pump lifting simulation experiment system, oil well pump that can test evaluation to Φ 140 pumps, has covered the scope of the on-the-spot employed oil well pump in present oil field from Φ 38 pumps; Simultaneously, for Utilization ratio and the cost performance that improves system, the pump of big parameter is limit parameter detecting, parameter and the technical order thereof specifically controlling and detect are as follows:
1. pump barrel inclination angle scope, 0～90 °, every 10 ° of grades, classification is adjustable;
2. maximum stroke 5m is stepless adjustable;
3. the highest jig frequency 6 dashes/minute, adjustable continuously;
4. test(ing) medium temperature, room temperature～90 ℃;
5. pump sucks pump intake pressure, 0～3MPa;
6. pump discharge pressure, 0～15MPa;
7. maximum polished rod load can reach 120kN;
8. instantaneous peak rate of flow 400m
3/ d;
9. sand content is not more than 3% (volume ratio);
10. add tolerance, be not more than 1m
3/ min (being converted to the numerical value that standard atmosphere is depressed).
By the foregoing description as can be known, by above-mentioned multi-functional rod pump lifting simulation experiment system, can overcome the defective of existing pilot system, can carry out testing property for the rod pumping pump of straight well, inclined shaft, directional well and horizontal well, satisfy the testing property demand of oil pump, the oil well pump of newly going into the well is provided the detection data of science;
And, can limit parameter detecting to big parameter pump, the old oil well pump that uses or keeped in repair is carried out Performance Detection and evaluation; In addition, also can carry out the performance comparison test, provide possibility for studying the following Efficiency of Sucker Rod pumps influence factor of working of different medium differing tilt angles and the research of the pump valve characteristics of motion to the oil well pump of different structure, different manufacturers.
Those of ordinary skills can also further recognize, the unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, the composition and the step of each example described prevailingly according to function in the above description.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technological scheme.The professional and technical personnel can use distinct methods to realize described function to each specific should being used for, but this realization should not thought and exceeds scope of the present invention.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.
Above-described embodiment; purpose of the present invention, technological scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (33)
1. a multi-functional rod pump lifting simulation experiment system is characterized in that described system comprises: electric-hydraulic proportion lifting driving control system, inclination angle analog system, mechanical linkage system, circulation process system and data capture and control system;
Described electric-hydraulic proportion promotes driving control system provides linear reciprocating motion for the test of oil well pump dynamic performance power; Described inclination angle analog system realizes that the angle of pump barrel and vertical line changes in 0 ° to 90 ° scope; The down-hole actual conditions of described circulation process system simulation oil well pump is realized the testing property of oil well pump; Described mechanical linkage system is fixed on oil well pump on the supporting frame, the actual loaded operating mode of simulation oil well pump, and the suction of proof test medium, discharge, motive sealing, and in process of the test the stability of elongated polished rod; Described data capture and control system are gathered, are calculated and handle data.
2. system according to claim 1 is characterized in that, described electric-hydraulic proportion promotes the control mode that driving control system adopts double pump feed flow, proportional reversing valve.
3. system according to claim 2 is characterized in that, described electric-hydraulic proportion promotes driving control system and specifically comprises: power source part, valve control part, hydraulic counterweight part, actuator's part, manual drives part and control section;
Described power source partly adopts small one and large one double pump central fluid supply, according to the needs of stroke jig frequency, selects different opening ways; The core component of described valve control part is the 3-position 4-way proportional reversing valve; Described hydraulic counterweight partly utilizes the hydraulic counterweight of accumulator as carrier; Described actuator part is made up of two composite cylinders, and every composite cylinder is made of three cavitys; Described manual drives part is used when the power source part can't drive the composite cylinder action and need the composite cylinder position to finely tune.
4. system according to claim 3 is characterized in that, each pump discharge of described power source part is furnished with relief valve and uses as safety valve.
5. system according to claim 3 is characterized in that, in described valve control part:
When oil cylinder is in propradation, the energising of the 1YA electromagnet of Proportional valve work, Proportional valve is operated in position, a left side, and outlet pressure oil enters the rodless cavity of master cylinder, and it is up to promote load, and accumulator fuel feeding to the counterweight chamber of composite cylinder provides additional drives power;
When oil cylinder is in when stopping layer state, the 1YA electromagnet outage of Proportional valve work, Proportional valve is operated in meta, and main pump motor is shut down or by the relief valve off-load simultaneously;
When oil cylinder is in downstream state, the energising of the 2YA electromagnet of Proportional valve work, Proportional valve is operated in right position, and outlet pressure oil enters the rod chamber of master cylinder, and it is descending to promote load, drives in the past accumulator in composite cylinder counterweight chamber oil-filled simultaneously.
6. system according to claim 3 is characterized in that, in described hydraulic counterweight part:
When oil cylinder was in upstroke, accumulator produced thrust to the oil extraction of composite cylinder counterweight chamber; When oil cylinder was in down stroke, the fluid in composite cylinder counterweight chamber recharged toward accumulator.
7. system according to claim 6 is characterized in that, the accumulator of described hydraulic counterweight part also is furnished with a cover recharging oil device, when the accumulator working pressure descends it is carried out repairing, to keep normal working pressure class.
8. system according to claim 3 is characterized in that, in described actuator part:
When fluid entered the composite cylinder cavity of resorption, piston rod was up, and when fluid entered on the composite cylinder, piston rod was descending; The up thrust of leaning on the discharge fluid of accumulator in the counterweight chamber of composite cylinder, descending drive by main cylinder piston-rod.
9. system according to claim 3 is characterized in that, in described manual drives part:
Under the state that Weighting system connects, manual pump drives the composite cylinder retraction; Manually the power of oil circuit is provided by manual pump.
10. system according to claim 9 is characterized in that, the discharge capacity that manual pump whenever shakes once is 90ml, the corresponding mobile 10mm of composite cylinder.
11. system according to claim 3 is characterized in that, at described control section:
Described control section by regulating the metering pump and the proportional reversing valve of control power source part, is realized the automatic stepless control of stroke and jig frequency according to the actual conditions needs; And utilize various kinds of sensors to show the working state that comprises pressure, flow, temperature in real time; And
Excessive in overpressure, stroke, when temperature rise exceeds standard, send alarm signal or forced stoppage automatically automatically, promote the safety of drive system to guarantee electric-hydraulic proportion.
12. system according to claim 1, it is characterized in that described inclination angle analog system comprises: stand, vertical guide, electric wire hoist, electric wire hoist support, vertical coaster, horizontal guide rail, fleeting tackle, supporting frame, inclination angle locking framework, slope device and hydraulic station;
The support frame as described above two ends use hinge support respectively on vertical coaster and fleeting tackle; Oil well pump is rigidly fixed on the support frame as described above, and parallel with support frame as described above.
13. system according to claim 12 is characterized in that, when described electric wire hoist drives when moving up and down in the vertical guide of vertical coaster in stand, fleeting tackle moves horizontally on horizontal guide rail, and the inclination angle of supporting frame changes thereupon.
14. system according to claim 12, it is characterized in that when support frame as described above was in vertical position, the angle of pump barrel and vertical line was 0 °, unclamp the inclination angle locking framework on the fleeting tackle this moment, slowly transfer electric hoist, fleeting tackle is descending along the slope, and whole supporting frame falls, after arriving certain inclination angle, supporting frame and on equipment rely on the effect of gravity and transfer voluntarily, reach desired inclination angle after, with the inclination angle locking framework fleeting tackle is locked;
When supporting frame from horizontal position when the vertical position hoists, the electric wire hoist that hoists, the inclination angle of supporting frame increases gradually, when inclination angle during near the vertical position, fleeting tackle is climbed up the slope.
15. system according to claim 12 is characterized in that, when described inclination angle locking framework carries out the oil well pump test under an inclination angle, realizes the reliable locking to supporting frame;
Described slope device guarantees when transfer the vertical position, supporting frame and on equipment rely on the effect of gravity to fall voluntarily;
Described hydraulic station provides power, by the switching controls of hydraulic circuit, realizes locking, maintenance, the release of inclination angle locking system.
16. system according to claim 1, it is characterized in that, described circulation process system comprises: liquid container, measuring tank, manually operated valve, mortor operated valve, feed flow screw pump, inlet flow rate meter, rate of discharge meter, inlet electric control valve, outlet electric control valve, and entrance and exit accumulator group, static mixer, pipeline mounted pump and high-pressure air source.
17. system according to claim 16, it is characterized in that, described manually operated valve is 7, be that SF I～SF VII, described mortor operated valve are 7, promptly DF I～DF VII, described feed flow screw pump are that two, described inlet flow rate count two, described rate of discharge to count two, described outlet electric control valve be two.
18. system according to claim 17 is characterized in that, starts selected screw pump and pour into test(ing) medium in oil well pump to be tested, the test(ing) medium discharge capacity of screw pump perfusion is greater than the oil pumping pump delivery; And, realize adjusting to the oil well pump inlet pressure by the aperture of regulating the inlet electric control valve.
19. system according to claim 17 is characterized in that, described inlet accumulator group is arranged on the exhaust end of solution feed pump, replenishes not enough liquid measure or stores unnecessary liquid measure according to the size of oil well pump required flow in process of the test.
20. system according to claim 17 is characterized in that, the changes in flow rate scope that described electric control valve is realized is 49～500m
3/ d, pressure range are 0～15MPa;
Described outlet accumulator is kept the stable of rate of discharge, to improve precision and the stability that outlet pressure is regulated.
21. system according to claim 17 is characterized in that, in described circulation process system:
Open manually operated valve SF I, close manually operated valve SF II, when not starting the feed flow screw pump, oil well pump is inhalation test medium from liquid container directly, does not simulate the inlet pump intake pressure, does not simulate the test of inlet pump intake pressure to finish routine.
22. system according to claim 17 is characterized in that, in described circulation process system:
Close manually operated valve SF I, open manually operated valve SF II,, open manually operated valve SF III or manually operated valve SF IV according to the displacement size of detected oil well pump;
According to the displacement size of detected oil well pump, open mortor operated valve DF I, close mortor operated valve DF II or open mortor operated valve DF II, close mortor operated valve DF I, open manually operated valve SF V simultaneously, close manually operated valve SF VI and manually operated valve SF VII;
The flow that sucks the test(ing) medium of oil well pump is measured by selected inlet electromagnetic flowmeter, to finish the test of conventional simulation inlet pump intake pressure.
23. system according to claim 17 is characterized in that, in described circulation process system:
Close manually operated valve SF V, open manually operated valve SF IV, manually operated valve SF VII, according to the size of the pump intake pressure of being simulated, by the pressure of pressure regulator valve adjusting source of the gas, by the mixing of static mixer realization gas, liquid, to finish the aerating test.
24. system according to claim 17 is characterized in that, in described circulation process system:
Before adding sand test, in supply tank, add additive and a certain amount of test sand of a certain amount of increase dielectric viscosity, and stir with stirrer.
25. system according to claim 1 is characterized in that, described mechanical linkage system comprises: suction, discharge and the motive sealing part of the fixing and test(ing) medium of oil well pump; And power loads and polished rod is set upright part.
26. system according to claim 25, it is characterized in that, suction, discharge and the motive sealing part of the fixing and test(ing) medium of described oil well pump specifically comprise: fixing device, righting device, transition pipe nipple, articulated pump barrel connector, Highpressure Tee, dynamic seal apparatus; Wherein,
The cylindrical shell of oil well pump is connected with described fixing device with articulated pump barrel connector by transition pipe nipple in the suction side, bears the thrust load that produces in the process of the test by described fixing device, and test(ing) medium imports in the oil well pump by fixing device simultaneously;
The cylindrical shell of oil well pump is connected with described dynamic seal apparatus by transition pipe nipple, Highpressure Tee at exhaust end, and test(ing) medium is derived from Highpressure Tee, the motive sealing in the described dynamic seal apparatus proof test process.
27. system according to claim 25, it is characterized in that, described power loads and polished rod is set upright part, specifically comprises: power blocks, loading crossbeam, loading bolt, tension-compression sensor, articulated polished rod connector, polished rod, polished rod positioning device, and set upright coaster and righting block thereof; Wherein,
Described loading crossbeam drives the power blocks motion, by loading bolt, tension-compression sensor, that articulated polished rod connector drives polished rod is reciprocating;
The described coaster of setting upright is used for preventing in the elongated polished rod unstability of down stroke, sets upright coaster by the servo-actuated that compound rope sheave mechanism forms, and is in the neutral position of the polished rod that stretches out all the time, thereby guarantees that polished rod can unstability in movement process.
28. system according to claim 1, it is characterized in that described data capture and control system specifically are used for: polished rod load, suspension point displacement, pump discharge pressure, pump inlet pressure, pump discharge flow, pump intake flow, gas flow, gas pressure, test(ing) medium temperature are gathered, handled and control.
29. system according to claim 28 is characterized in that, described data capture and control system comprise: polished rod load sensor and suspension point displacement transducer;
Described polished rod load sensor and suspension point displacement transducer convert polished rod load, suspension point displacement signal to 4～20mA electrical signal, convert digital signal to through the ADAM-4117 data acquisition module, enter control computer by the RS485 address card, finish the computer screen demonstration and the data processing of survey data again by testing software.
30. system according to claim 28, it is characterized in that, pump discharge flow, pump intake flow, gas flow, gas pressure are detected by corresponding sensor, convert digital signal to through the ADAM-4117 data acquisition module, enter control computer by the RS485 address card, finish the computer screen demonstration and the data processing of survey data again by testing software.
31. system according to claim 28, it is characterized in that, pump discharge pressure, pump inlet pressure are detected by corresponding pressure transducer, realize the data display of operating console panel respectively by XMT-3 intelligent digital control instrument, and finish the control corresponding function, send Out let that detected data are sent into the RS485 address card by the RS485 change of instrument itself simultaneously, enter control computer, finish the computer screen demonstration and the data processing of survey data again by testing software.
32. system according to claim 28, it is characterized in that, the pump discharge flow measures by measuring tank, after liquid level sensor carries out conversion with liquid level signal, send into XMG-2G type intelligent digital controller, after conversion, send Out let to send into the RS485 address card by the RS485 change of instrument itself liquid level numerical value, enter control computer, structural parameter of being irritated according to metering by testing software and the metering time conversion of finishing data on flows again is presented on the computer screen then and finishes corresponding data processing.
33. system according to claim 28, it is characterized in that, the test(ing) medium temperature is detected by temperature transducer, be transferred to XM908-3 type intelligent digital controller, finish the heat control that adds of medium, become through the RS485 of instrument itself simultaneously and send Out let to send into the RS485 address card, enter control computer and carry out corresponding data processing by testing software again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010559969 CN102094803B (en) | 2010-11-24 | 2010-11-24 | Multifunctional sucker-rod pump hoisting simulation test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010559969 CN102094803B (en) | 2010-11-24 | 2010-11-24 | Multifunctional sucker-rod pump hoisting simulation test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102094803A true CN102094803A (en) | 2011-06-15 |
| CN102094803B CN102094803B (en) | 2013-03-27 |
Family
ID=44128029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010559969 Active CN102094803B (en) | 2010-11-24 | 2010-11-24 | Multifunctional sucker-rod pump hoisting simulation test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102094803B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568404A (en) * | 2014-12-24 | 2015-04-29 | 中国石油天然气股份有限公司 | Inclination angle simulation system for oil well pump test |
| CN105298821A (en) * | 2015-09-16 | 2016-02-03 | 大连液压件有限公司 | Air-source pressure fast conversion device |
| CN105673471A (en) * | 2014-11-20 | 2016-06-15 | 中国石油化工股份有限公司 | Metal screw pump vertical type simulation experiment method |
| CN107246262A (en) * | 2017-04-11 | 2017-10-13 | 西南石油大学 | A kind of leakage amount detecting device and method for simulating oil well pump working environment |
| CN109138983A (en) * | 2018-07-20 | 2019-01-04 | 中国石油天然气股份有限公司 | Pump displacement calculation method and its device, computer storage medium |
| CN109681198A (en) * | 2019-01-25 | 2019-04-26 | 大连理工大学 | A kind of multimode exploitation simulator and method for different type gas hydrates reservoir |
| CN110487536A (en) * | 2019-09-20 | 2019-11-22 | 中国石油化工股份有限公司 | A kind of preferred device for testing and analyzing of pump valve structure based on operating mode feature |
| CN112211810A (en) * | 2020-09-17 | 2021-01-12 | 中国石油天然气股份有限公司 | Direct drive device of motor without reduction box and operation control method |
| CN113389528A (en) * | 2021-07-28 | 2021-09-14 | 西安石油大学 | Performance testing device and method for underground cyclone sand remover |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1670177A1 (en) * | 1988-06-15 | 1991-08-15 | Куйбышевский инженерно-строительный институт им.А.И.Микояна | Method of testing centrifugal pump installation with electric drive in well |
| CN2169710Y (en) * | 1993-06-11 | 1994-06-22 | 大庆石油学院 | Deep well oil pump dynamic analogue test device |
| CN1328214A (en) * | 2000-11-02 | 2001-12-26 | 北京威斯顿优利仪器仪表科技发展有限公司 | Electric power circulation detection and diagnosis technique for petroleum recovering station |
| DE102007041137A1 (en) * | 2007-08-30 | 2009-03-05 | Netzsch Oilfield Products Gmbh | Eccentric screw pump's pumping rate optimizing device for oil field, has test stand arranged in oil field to test pump under operating conditions with oil and including controller simulating oil pressure in pump based on borehole's pressure |
-
2010
- 2010-11-24 CN CN 201010559969 patent/CN102094803B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1670177A1 (en) * | 1988-06-15 | 1991-08-15 | Куйбышевский инженерно-строительный институт им.А.И.Микояна | Method of testing centrifugal pump installation with electric drive in well |
| CN2169710Y (en) * | 1993-06-11 | 1994-06-22 | 大庆石油学院 | Deep well oil pump dynamic analogue test device |
| CN1328214A (en) * | 2000-11-02 | 2001-12-26 | 北京威斯顿优利仪器仪表科技发展有限公司 | Electric power circulation detection and diagnosis technique for petroleum recovering station |
| DE102007041137A1 (en) * | 2007-08-30 | 2009-03-05 | Netzsch Oilfield Products Gmbh | Eccentric screw pump's pumping rate optimizing device for oil field, has test stand arranged in oil field to test pump under operating conditions with oil and including controller simulating oil pressure in pump based on borehole's pressure |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673471A (en) * | 2014-11-20 | 2016-06-15 | 中国石油化工股份有限公司 | Metal screw pump vertical type simulation experiment method |
| CN104568404A (en) * | 2014-12-24 | 2015-04-29 | 中国石油天然气股份有限公司 | Inclination angle simulation system for oil well pump test |
| CN105298821A (en) * | 2015-09-16 | 2016-02-03 | 大连液压件有限公司 | Air-source pressure fast conversion device |
| CN107246262A (en) * | 2017-04-11 | 2017-10-13 | 西南石油大学 | A kind of leakage amount detecting device and method for simulating oil well pump working environment |
| CN109138983A (en) * | 2018-07-20 | 2019-01-04 | 中国石油天然气股份有限公司 | Pump displacement calculation method and its device, computer storage medium |
| CN109138983B (en) * | 2018-07-20 | 2022-05-10 | 中国石油天然气股份有限公司 | Pumping displacement calculation method and device and computer storage medium |
| CN109681198A (en) * | 2019-01-25 | 2019-04-26 | 大连理工大学 | A kind of multimode exploitation simulator and method for different type gas hydrates reservoir |
| CN110487536A (en) * | 2019-09-20 | 2019-11-22 | 中国石油化工股份有限公司 | A kind of preferred device for testing and analyzing of pump valve structure based on operating mode feature |
| CN112211810A (en) * | 2020-09-17 | 2021-01-12 | 中国石油天然气股份有限公司 | Direct drive device of motor without reduction box and operation control method |
| CN113389528A (en) * | 2021-07-28 | 2021-09-14 | 西安石油大学 | Performance testing device and method for underground cyclone sand remover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102094803B (en) | 2013-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102094803B (en) | Multifunctional sucker-rod pump hoisting simulation test system | |
| WO2016107592A1 (en) | Intelligent oil pumping control method and intelligent oil pumping unit | |
| CN101692027B (en) | Universal material testing machine for variable rotating speed pump control hydraulic servo loading system | |
| MX2007002252A (en) | Pump jack apparatus and pumping method. | |
| CN204402438U (en) | Intelligent oil pumping machine | |
| CN103499487A (en) | Complex load tester | |
| CN104141644A (en) | Power unit of hydraulic pumping unit and corresponding hydraulic pumping unit | |
| CN113008718A (en) | Axial plunger pump flow distribution pair test device and method | |
| CN105089574A (en) | Mobile trial production equipment pulled up by hydraulic cylinder | |
| CN108383039A (en) | A kind of energy-saving stepping type lifter structure hydraulic control system | |
| CN208037918U (en) | Multi-station synchronous lift control system for aircraft lifting and landing | |
| CN111594139A (en) | Oil well testing and equal pump filling stroke-number synchronous numerical control oil pumping method | |
| CN209133001U (en) | A kind of experimental provision of active/passive compensation of undulation | |
| CA3156920A1 (en) | Rod pumping surface unit | |
| CN109754694A (en) | A kind of novel walking beam type well oil pumping system dynamic analog device | |
| CN206666028U (en) | A kind of hydraulic-driven lowering or hoisting gear of full-automatic net puller | |
| CN208150860U (en) | Hydraulic control system for aircraft synchronization of jacking up | |
| CN103047202B (en) | The hydraulic system of synthesis experiment platform | |
| CN107764652A (en) | A kind of 210MPa production trees device for detecting water pressure | |
| CN203239662U (en) | Power unit of hydraulic pumping unit and corresponding hydraulic pumping unit | |
| CN202970633U (en) | Full-automatic hydraulic pumping unit | |
| CN209604344U (en) | A kind of feeding hydraulic system | |
| CN204283356U (en) | Bascule and beam pumping unit and tower-type pumping unit | |
| CN105672952A (en) | Intelligent non-beam hydraulic oil pumping technology and hydraulic oil pumping machine | |
| CN2169710Y (en) | Deep well oil pump dynamic analogue test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |