CN106644351A - Continuous wave pulse generator wind tunnel experiment device - Google Patents
Continuous wave pulse generator wind tunnel experiment device Download PDFInfo
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- CN106644351A CN106644351A CN201510717507.3A CN201510717507A CN106644351A CN 106644351 A CN106644351 A CN 106644351A CN 201510717507 A CN201510717507 A CN 201510717507A CN 106644351 A CN106644351 A CN 106644351A
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Abstract
The invention provides a continuous wave pulse generator wind tunnel experiment device, including a blower, a bypass valve, a flowmeter, a flange, a pressure sensor array, a signal generator rotary valve, a differential pressure transducer, a transmission device, a torque sensor, a motor, an analog drill, an experimental section outer shell and a U-shaped choke cover. The data measured by the pressure sensor array, the differential pressure sensor and the torque sensor are connected with an upper computer through a data acquisition system. The Signal generator rotary valve includes a rotor and a stator, and the signal generator rotary valve, the pressure sensor array, the differential pressure sensor, the transmission device, the torque sensor, the motor and the experimental section outer shell form a signal generation experimental section. The continuous wave pulse generator wind tunnel experiment device provided by the invention can simulate the design and control process of a continuous wave pulse generator, and simulate the underground drill reflection condition at the same time, thereby shortening a design and experiment period, and saving experiment cost.
Description
Technical field
The present invention relates to a kind of experimental provision of the generation and detection for simulating down-hole continuous wave signal, more particularly to a kind of continuous pulse generator wind tunnel simulation experiment device.
Background technology
At present, in the measurement while drilling field of oil drilling industry, drilling fluid continuous pressure ripple information transmission mode represents the developing direction of Wireless Measurement-while-drilling Technology.The transmission means is earliest to propose that at present, the company such as Schlumberger, Baker Hughes, Halliburton and APS possessed Related product or technology in 1977, and its technology is relatively ripe.The research of continuous wave drilling fluid high speed data transmission system can be broken through with the bottleneck for boring observation and control technology development, promote well logging and geosteering to be preferably petroleum exploration and development service, create huge economic and social benefit.
At present, the wireless drilling measuring system of domestic-developed is mostly that the generation and the theoretical research in transmission stage and the development of MWD device to continuous wave signal is also in initialization phase with the transmission of positive pulse mud pressure ripple.Research to continuous wave slurry pulse generator, it is almost or blank.Continuous wave slurry pulse generator development has where two keys, one be rotor and stator rotary valve structure determination, another be continuous wave signal process.And for two above key point by numerical simulation iff if being analyzed, due to downhole instrument working environment it is more complicated, it is difficult to the actual state of true simulation continuous wave instrument underground work, it is therefore necessary to carry out the design and research and development of continuous pulse generator experimental provision.The research of following aspect can be carried out by the device：1）Research signal waveform with port shape, turn the Changing Pattern of stator shaft orientation gap, signal frequency；2）Research waterpower rotary valve with port shape, rotor thickness, rotor blade inclination angle, rotor flap number, flow, signal frequency Changing Pattern；3）Reflection, superposition phenomenon of the research continuous wave signal in pipeline.Signal generator to being operated in down-hole is designed and control, due to the special operation condition environment residing for it, carries out that down-hole experimental cost is high, the cycle is long, and is restricted by many factors.Theoretical according to dynamic similarity, air force has similar Reynolds number to drilling fluid, it is possible to use aerodynamic Simulation drilling fluid flows, and based on this theory wind tunnel experiment device can be adopted to simulate the working environment at coal mines of complexity.Chinese patent（ZL201120235402.1）Disclose a kind of continuous wave signal generator wind tunnel simulation experimental apparatus, the device can simulate to a certain extent design and the control process of underground signal generator, but there is also certain problem, cannot simulate reflected at drill bit, and reflected signal affects larger to continuous wave signal at drill bit, therefore, a kind of wind tunnel experiment device that can simulate drill bit reflection for continuous pulse generator is devised.
The content of the invention
The purpose of the present invention is the problem existed for prior art, there is provided a kind of convenient, quick, cheap simulation down-hole continuous-wave generator working condition continuous pulse generator wind tunnel experiment device.
A kind of continuous pulse generator wind tunnel experiment device, including aerator 1, signal generator rotary valve 6, power transmission shaft 8, motor 10, experimental section shell body 12 and data collecting system, the discharge pipe of aerator 1 is tightly connected composition insertion air channel with experimental section shell body 12, signal generator rotary valve 6, power transmission shaft 8 and motor 10 are located in experimental section shell body 12, the rotor that signal generator rotary valve 6 includes the stator being connected with experimental section shell body 12 and is connected with the power transmission shaft 8 of motor 10, wherein：Connecting bypass pipe and bypass valve 2, mass air flow sensor 3 on the discharge pipe of aerator 1, array of pressure sensors 5 is set in the experimental section shell body 12 of the air intake of signal generator rotary valve 6, differential pressure pickup 7 is set in the experimental section shell body 12 at the inlet/outlet air end of signal generator rotary valve 6, torque sensor 9 is set on power transmission shaft 8, and mass air flow sensor 3, array of pressure sensors 5, differential pressure pickup 7, torque sensor 9 are connected by data collecting system with host computer；Connection being also sealedly connected with the outlet air end of experimental section shell body 12 and simulating drill bit 11, on simulation drill bit 11 some and air channel insertion hydrophthalmia is distributed, in the U-shaped air-resistance cover 13 of the outer setting of simulation drill bit 11, the blind end of U-shaped air-resistance cover 13 is relative with simulation drill bit 11 work surface end.
Such scheme is further included：
The stator of signal generator rotary valve 6 being located in experimental section shell body 12 is scalable setting with rotor spacing.Scalable set-up mode includes：Stator is fixedly connected with experimental section shell body 12, and rotor is by steady pin and propeller shaft slip lock fit；Or stator is coordinated with experimental section shell body 12 by steady pin slide lock, rotor is fixedly connected with power transmission shaft.
Aerator 1 connects and composes straight-through air channel with simulation drill bit 11 with experimental section shell body 12 and experimental section shell body 12 by flange.
This experimental provision convenient, quick, cheap simulation down-hole continuous-wave generator working condition on the basis of based on dynamic similarity, required drive is little, and system pressure is low, easy accessibility, and by medium of air completely enclosed loop need not be set up.Compared with prior art, the experimental provision can not only simulate the design of underground signal generator and control process, research signal waveform with port shape, turn the Changing Pattern of stator shaft orientation gap, signal frequency, research waterpower rotary valve with port shape, rotor thickness, rotor blade inclination angle, rotor flap number, flow, signal frequency Changing Pattern, downhole drill bit reflection can also be simulated, reflection, superposition phenomenon of the continuous wave signal in pipeline is studied.The device provides strong technical guarantee for the development of continuous pulse generator.
Description of the drawings：
Fig. 1 is continuous pulse generator wind tunnel experiment apparatus structure simplified schematic diagram.
1st, aerator, 2, bypass valve, 3, mass air flow sensor, 4, flange, 5, array of pressure sensors, 6th, signal generator rotary valve, 7, differential pressure pickup, 8, power transmission shaft, 9, torque sensor, 10th, motor, 11, simulation drill bit, 12, experimental section shell body, 13, U-shaped air-resistance cover.
Specific embodiment：
Below by drawings and Examples, technical scheme is described in further detail.
As shown in figure 1, a kind of continuous pulse generator wind tunnel experiment device proposed by the present invention includes：Aerator 1, bypass valve 2, mass air flow sensor 3, flange 4, array of pressure sensors 5, signal generator rotary valve 6, differential pressure pickup 7, actuating device 8, torque sensor 9, motor 10, simulation drill bit 11, experimental section shell body 12, U-shaped air-resistance cover 13.Mass air flow sensor 3, array of pressure sensors 5, differential pressure pickup 7, the data of the measurement of torque sensor 9 are connected by data collecting system with host computer.According to the traffic requirement of design, the air quantity that aerator 1 is produced can pass through to adjust the switch of bypass valve 2 when through bypass valve 2, while monitoring the numerical value of mass air flow sensor 3 to reach the range of flow of design.
During rotor rotates, then rotary valve mouth from minimum flow area changes to maximum flow area again from maximum flow area change to minimum flow area.When rotary valve circulation area increases, gas flowing is unimpeded, and pressure reduces；When circulation area reduces, gas constricted flow, pressure increase.In rotor rotation process, cutting fluid between rotor and stator produces different pressure differentials, so as to generate Pressure Fluctuation Signal.So, according to certain rules the rotary speed of controlled motor, will produce the Pressure Fluctuation Signal of certain rule.
Above-mentioned signal generator rotary valve 6 includes rotor and stator, and it constitutes signal and experimental section occurs with array of pressure sensors 5, differential pressure pickup 7, power transmission shaft 8, torque sensor 9, motor 10 and experimental section shell body 12.According to experiment needs, array of pressure sensors 5 can be made up of 2 or more pressure transducers, multiple real-time pressure datas are obtained by array of pressure sensors 5, comprehensive analysis is carried out to multiple pressure detection datas using data fusion method, can effectively remove the reflection interference in continuous wave signal；The two ends of differential pressure pickup 7 are distributed in the left and right sides of signal generator rotary valve 6, by monitoring differential pressure pickup numerical value, can be with signal Analysis through the pressure changing of signal generator rotary valve 6；Torque sensor 9 is used for the moment of torsion monitored under the different mode of operation of motor 8 and the combination of different signal generator rotary valves 6 is produced；The stator of signal generator is screwed in 12 on experimental section shell body, and rotor is fixed to ensure that rotor can not be moved forward and backward by fixing device, while carrying graduated scale in fixing device, can as needed adjust the distance between rotor and stator；Motor 10 is rotated by the rotor driven of power transmission shaft 8, and motor 10 is connected with motor driver and rotary transformer, and motor driver is connected with host computer again, can be operated according to certain pattern with controlled motor by host computer.
There is experimental section by signal, following research can be carried out：1 signal waveform with port shape, turn the Changing Pattern of stator shaft orientation gap, signal frequency；2 waterpower rotary valves with port shape, rotor thickness, rotor blade inclination angle, rotor flap number, flow, signal frequency Changing Pattern.
Some hydrophthalmias are distributed on above-mentioned simulation drill bit 11, the wind that experimental section outflow occurs from signal continues to propagate to the right by the hydrophthalmia of simulation drill bit 11, and right side is closed section, and the U-shaped air-resistance cover 13 bigger than the diameter of experimental section shell body 12 with is connected.By increasing simulation drill bit 11 and U-shaped air-resistance cover 13, so that some reflection is understood in the fluctuation that experimental section generation occurs from signal at drill bit, this can effectively simulate the situation that down-hole drilling fluids pressure wave meets drill bit reflection, the ripple for reflecting can occur the ripple that experimental section produces and formed be superimposed with signal, this for we study reflection of the continuous wave signal in pipeline, superposition phenomenon play the role of it is important.
Finally it should be noted that：Various embodiments above only to illustrate technical scheme, rather than a limitation；Although being described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that：It still can modify to the technical scheme described in foregoing embodiments, either carry out equivalent to which part or all technical characteristic；And these modifications or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (4)
1. a kind of continuous pulse generator wind tunnel experiment device, including aerator（1）, signal generator rotary valve（6）, power transmission shaft（8）, motor（10）, experimental section shell body（12）And data collecting system, aerator（1）Discharge pipe and experimental section shell body（12）It is tightly connected composition insertion air channel, signal generator rotary valve（6）, power transmission shaft（8）And motor（10）It is located at experimental section shell body（12）It is interior, signal generator rotary valve（6）Including with experimental section shell body（12）The stator of connection and and motor（10）Power transmission shaft（8）The rotor of connection, is characterized in that：In aerator（1）Discharge pipe on connecting bypass pipe and bypass valve（2）, mass air flow sensor（3）, in signal generator rotary valve（6）Air intake experimental section shell body（12）Interior setting array of pressure sensors（5）, in signal generator rotary valve（6）Inlet/outlet air end experimental section shell body（12）Interior setting differential pressure pickup（7）, in power transmission shaft（8）Upper setting torque sensor（9）, mass air flow sensor（3）, array of pressure sensors（5）, differential pressure pickup（7）, torque sensor（9）It is connected with host computer by data collecting system, in experimental section shell body（12）Outlet air end is also sealedly connected with connection simulation drill bit（11）, simulate drill bit（11）It is upper to be distributed some hydrophthalmias with air channel insertion, in simulation drill bit（11）It is outer that U-shaped air-resistance cover is set（13）, U-shaped air-resistance cover（13）Blind end and simulation drill bit（11）Work surface end is relative.
2. continuous pulse generator wind tunnel experiment device according to claim 1, is characterized in that：It is located at experimental section shell body（12）Interior signal generator rotary valve（6）Stator is scalable setting with rotor spacing.
3. continuous pulse generator wind tunnel experiment device according to claim 2, is characterized in that stator includes with rotor spacing for scalable set-up mode：Stator and experimental section shell body（12）It is fixedly connected, rotor is by steady pin and propeller shaft slip lock fit；Or stator and experimental section shell body（12）Coordinated by steady pin slide lock, rotor is fixedly connected with power transmission shaft.
4., according to claim 1,2 or described continuous pulse generator wind tunnel experiment device, aerator it is characterized in that（1）With experimental section shell body（12）And experimental section shell body（12）With simulation drill bit（11）Straight-through air channel is connected and composed by flange.
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| CN201510717507.3A CN106644351A (en) | 2015-10-30 | 2015-10-30 | Continuous wave pulse generator wind tunnel experiment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320269A (en) * | 2021-12-27 | 2022-04-12 | 重庆科技学院 | Pumping perforation experimental device and method |
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| GB2351350A (en) * | 1999-06-23 | 2000-12-27 | Sofitech Nv | Cavity stability prediction method for wellbores |
| CN101573507A (en) * | 2006-11-02 | 2009-11-04 | 桑德克斯公司 | An apparatus for creating pressure pulses in the fluid of a bore hole |
| CN202145159U (en) * | 2011-07-06 | 2012-02-15 | 中国石油大学(华东) | Continuous wave signal generator wind tunnel simulation experimental apparatus |
| CN203961966U (en) * | 2014-07-28 | 2014-11-26 | 中国石油集团渤海钻探工程有限公司 | Rotary valve mud pulse generator |
| CN104196521A (en) * | 2014-09-18 | 2014-12-10 | 中国石油集团渤海钻探工程有限公司 | Rotary valve mud-pulse generator |
| CN205175658U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Continuous wave impulse generator wind tunnel experiment device |
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2015
- 2015-10-30 CN CN201510717507.3A patent/CN106644351A/en active Pending
Patent Citations (6)
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| GB2351350A (en) * | 1999-06-23 | 2000-12-27 | Sofitech Nv | Cavity stability prediction method for wellbores |
| CN101573507A (en) * | 2006-11-02 | 2009-11-04 | 桑德克斯公司 | An apparatus for creating pressure pulses in the fluid of a bore hole |
| CN202145159U (en) * | 2011-07-06 | 2012-02-15 | 中国石油大学(华东) | Continuous wave signal generator wind tunnel simulation experimental apparatus |
| CN203961966U (en) * | 2014-07-28 | 2014-11-26 | 中国石油集团渤海钻探工程有限公司 | Rotary valve mud pulse generator |
| CN104196521A (en) * | 2014-09-18 | 2014-12-10 | 中国石油集团渤海钻探工程有限公司 | Rotary valve mud-pulse generator |
| CN205175658U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Continuous wave impulse generator wind tunnel experiment device |
Non-Patent Citations (1)
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| 刘新平: "DSP控制连续波信号发生器机理与风洞模拟试验研究", 《中国博士学位论文全文数据库 工程科技I辑》 * |
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| CN114320269A (en) * | 2021-12-27 | 2022-04-12 | 重庆科技学院 | Pumping perforation experimental device and method |
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