CN102425411A - Continuous Wave Mud Pulse Generator - Google Patents
Continuous Wave Mud Pulse Generator Download PDFInfo
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- CN102425411A CN102425411A CN2011104524869A CN201110452486A CN102425411A CN 102425411 A CN102425411 A CN 102425411A CN 2011104524869 A CN2011104524869 A CN 2011104524869A CN 201110452486 A CN201110452486 A CN 201110452486A CN 102425411 A CN102425411 A CN 102425411A
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Abstract
The invention provides a continuous wave mud pulse generator, wherein a power and transmission device is arranged at the bottom, a pressure balancing and sealing module is arranged in the middle, and a rotary valve is arranged at the top; the power and transmission device consists of a motor driver, a motor assembly, a universal coupling, a secondary sealing transmission shaft and a main transmission shaft, wherein the motor assembly is fixed in the pressure-resistant cylinder, and the secondary sealing transmission shaft is connected with the motor assembly through the universal coupling; the pressure balancing and sealing module consists of a compression cylinder, a balancing piston and a high-pressure plug, wherein the compression cylinder is provided with a pore channel for slurry circulation, and the compression cylinder is provided with a pore channel for hydraulic oil circulation; the rotary valve consists of a stator, a rotor and a sleeve; the wireless measurement-while-drilling system is simple in structure, reliable in work, suitable for a wireless measurement-while-drilling system and capable of solving the problems of low information transmission speed and high transmission error rate.
Description
Affiliated technical field
The invention belongs to the petroleum drilling engineering field, particularly a kind of mud pulse generator that is used for the wireless drilling measurement.
Background technology
In the drilling process, especially in the drilling process of complex structural wells such as horizontal well, extended reach well and Multilateral Wells, the various downhole parameters that the well site personnel need to understand are in real time accomplished by measurement while drilling MWD, well logging during LWD system.Measurement while drilling, well logging during system are made up of downhole controller, various downhole parameters measuring apparatus, the measurement while drilling information transmission system and terrestrial information reception, processing, display system.The information transmission system wherein is one of key technology.
Development pole is unbalanced between each sub-systems of measurement while drilling, logging system for a long time, mainly shows as the contradiction between continuous the increasing of message transmission subsystem transfer rate down-hole information amount low and that need transmit.
But since the nineties in last century, the rate of information throughput of measurement while drilling is but gone no further, and becomes the bottleneck of measurement while drilling, logging system development.At present, the information transferring method of measurement while drilling mainly contains four kinds: wire cable method, mud-pulse method, sonic method and electromagnetic wave method, every kind of mode all has its limitation and the scope of application, wherein uses the most extensive, reliable with the mud-pulse method.The mud-pulse method is divided into negative pulse, positive pulse and three kinds of transmission means of continuous wave, present most widely used positive pulse transmission means again.
Wherein, the reciprocating type signal generator of hydraulic-driven of band guide control is the most general form of mud positive pulse transmission means.It is moved back and forth by hydraulic control circuit driving primary throttle valve and produces pressure pulse signal, and the medium of hydraulic control circuit can be that drilling fluid also can be a hydraulic oil.The hydraulic control circuit of reciprocal throttle type signal generator that wherein with the drilling fluid is medium is relatively simple for structure; But since drilling fluid exist damage ratio serious, flow have non-newtonian feature with and the problem that changes with the variation of drilling condition of character; Cause its operating frequency very low, can only produce discrete pressure pulse signal; The reciprocal throttle type signal generator that with hydraulic oil is medium need set up a cover hydraulic power system; Structure is very complicated; Because the space is narrow and small, environment has badly limited the application of high-performance Hydraulic Elements, so the operating frequency of this kind signal generator is generally all lower.
Facts have proved; Drilling liquid pressure fluctuation signal transmission means; Be the most practical, the method the most reliably of wirelessly transmitting data earthward from the down-hole at present, but exist one extremely distinct issues be succeeding in developing and using along with the new measuring apparatus in various down-holes; The parameter of measurement while drilling is more and more, develops into the measurement of a plurality of environment such as the pressure of the drill, moment of torsion, pressure, temperature, natural gamma, formation resistivity, geologic parameter from geometric parameter measurements such as initial hole deviation, orientation, tool-face.The signal rate of drilling liquid pressure signal generator is relatively too slow at present, thereby the working mechanism and the characteristic of analysis and research hydraulic pressure signal generator for the development High-Speed Signal-Generator, realize that transmission underground survey data in high efficient and reliable ground are very important.
Summary of the invention
The objective of the invention is to avoid the deficiency of prior art and a kind of continuous wave mud pulse generator is provided.
The technical scheme that the present invention adopted is:
The continuous wave mud pulse generator comprises power and transmission device, pressure balance and seal modules and rotary valve, is installed in the non magnetic drill collar, and spearhead is the retaining part of fishing tool; Power and transmission device are in the bottom, and pressure balance and seal modules are in the centre, and rotary valve is at the top; Power and transmission device are made up of motor driver, motor assembly, Hooks coupling universal coupling, secondary seal power transmission shaft and final drive shaft, and motor assembly is fixed in the resistance to compression tube, and the secondary seal power transmission shaft is connected with motor assembly through Hooks coupling universal coupling; Pressure balance and seal modules be by the resistance to compression tube, dummy piston, and the high pressure plug is formed, and the resistance to compression tube has the duct of mud circulation, and the resistance to compression tube has the duct of hydraulic oil circulation; Rotary valve is made up of stator, rotor and sleeve.
Motor assembly is made up of dc brushless motor, planetary reducer and speed probe, and speed probe is in the bottom, and dc brushless motor is in the centre, and planetary reducer is at the top.
Rotor links to each other with final drive shaft, and stator is fixed in the sleeve, and certain end play is arranged between stator and the rotor, and rotor has impeller near stator terminal, and guide wheel is arranged behind the impeller.
The pressure of dummy piston I balance left side cavity and right cavity; Left side cavity is filled with hydraulic oil; Right chamber pressure is a mud pressure, the pressure of the cavity that dummy piston II balance cavity and secondary seal power transmission shaft and resistance to compression tube constitute, and hydraulic oil is all filled with in dummy piston II both sides.
Mud gets into the right cavity in the resistance to compression tube by the duct, and under the mud pressure effect, the dummy piston I is moved to the left; The dummy piston II moves right, and the hydraulic oil of left cavity is under the squeezing action of dummy piston I, and pressure raises; When pressure balance, dummy piston I, II maintain the equilbrium position; When annular space mud pressure in the drill collar reduced, the dummy piston I moved right, and the dummy piston II is moved to the left, and the hydraulic fluid pressure of left cavity reduces, and then resistance to compression urceolus external and internal pressure is consistent.
The impeller of rotor rotates with final drive shaft, through the opening and the closure of stator, discharges and obstruct mud; The guide wheel of rotor plays the power-assisted effect when pulser is worked, when pulser is not worked, play the generating effect.
Compared with prior art; Advantage of the present invention is: the continuous wave mud pulse generator; Gap between final drive shaft and the secondary seal power transmission shaft, auxiliary thrust bearing and the angular contact bearing that is provided with can be offset the axial deformation under the mud pressure, plays the effect of protection motor assembly.The setting of dummy piston; Not only can play the sealing function of isolating mud, can also the pressure of mud be imported to resistance to compression tube inside, be internal and external pressure balance; Interior external pressure is consistent basically; Promoted the anti-pressure ability of resistance to compression tube greatly, and, adopted the secondary seal structure in order to improve reliability.Use the direct driven in rotation valve of motor assembly, therefore, signal transmission rate is higher than the reciprocating type signal generator of hydraulic-driven of traditional band guide control, and the bit error rate is lower.Change the adjustment pad of rotary valve, can adapt to different well depths and slurry environment.Therefore the present invention has simple in structurely, and reliable operation is applicable to the wireless drilling measuring system, solves transmission of Information speed and reaches the high problem of transmission error rates slowly.
Description of drawings
Fig. 1 is a continuous wave mud pulse generator structural representation.
Fig. 2 is pressure balance and seal modules structure for amplifying sketch map.
Fig. 3 is a rotary valve stator sectional view.
Fig. 4 is a rotary valve rotor sectional view.
Fig. 5 is a rotary valve rotor structure sketch map.
Among the figure: 1 is spearhead, and 2 is sleeve, and 3 is sleeve, and 7 is cavity, and 8 is driving shaft, and 9 are the resistance to compression tube; 10 is left cavity, and 11 is the dummy piston I, and 12 is right cavity, and 13 is passage, and 14 are the resistance to compression tube, and 15 are the resistance to compression tube; 16 is the dummy piston II, and 17 is the secondary seal power transmission shaft, and 18 is Hooks coupling universal coupling, and 19 is motor assembly, and 20 are the resistance to compression tube, and 21 are the resistance to compression tube; 22 is the high pressure plug, and 23 is motor driver, and 25 is stator, and 26 is rotor, and 27 is guide wheel, and 28 is impeller.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in Figure 1, the continuous wave mud pulse generator is made up of power and transmission device, pressure balance and seal modules and rotary valve, is installed in the non magnetic drill collar, and spearhead 1 is the retaining part of fishing tool.Power and transmission device are in the bottom, and pressure balance and seal modules are in the centre, and rotary valve is at the top; Power and transmission device are made up of motor driver 23, motor assembly 19, Hooks coupling universal coupling 18, secondary seal power transmission shaft 17 and final drive shaft 8; Motor assembly is fixed in the resistance to compression tube 20, and secondary seal power transmission shaft 17 is connected with motor 19 assemblies through Hooks coupling universal coupling 28; Pressure balance and seal modules be by resistance to compression tube 9,14,15,21, dummy piston I 11, dummy piston II 16, and high pressure plug 22 is formed, and resistance to compression tube 14 has the duct 13 of mud circulation, and resistance to compression tube 14,21 has the duct of hydraulic oil circulation; Rotary valve is made up of stator 25, rotor 26 and sleeve 2,3.
Like Fig. 1,3, shown in 4, rotor 26 links to each other with final drive shaft 8, and stator is fixed in the sleeve 2, and certain end play is arranged between stator 25 and the rotor 26, and rotor 26 has impeller 28 near stator 25 ends, and guide wheel 27 is arranged behind the impeller.
The impeller 28 of rotor 26 is with final drive shaft 8 rotation, successively through the opening and the closure of stator 25, discharge and intercept mud, and then reach change mud pressure effect.The guide wheel 27 of rotor 26 can play the effect of power-assisted when pulser is worked, when pulser is not worked, under the percussion of mud, also can reach the purpose of generating.
Like Fig. 1, shown in 2; The pressure of dummy piston 11 balances left side cavity 10 and right cavity 12; Left side cavity 10 is filled with hydraulic oil; Right cavity 12 pressure are mud pressure, dummy piston 16 balance cavitys 7 and the pressure of secondary seal power transmission shaft 17 with the cavity of resistance to compression tube 15 formations, and hydraulic oil is all filled with in dummy piston 16 both sides.When operate as normal, the right cavity 12 that mud is got in the resistance to compression tube 14 by passage 13 is under the mud pressure effect; Dummy piston 11 is moved to the left; Dummy piston 16 moves right, and the hydraulic oil of left cavity 10 is under the squeezing action of dummy piston 11, and pressure raises; When pressure balance, dummy piston 11,16 maintains the equilbrium position.When annular space mud pressure in the drill collar reduced, dummy piston 11 moved right, and dummy piston 16 is moved to the left, and the hydraulic fluid pressure of left cavity 10 reduces, and then resistance to compression urceolus external and internal pressure is consistent.
When the present invention uses, need work together with other modules of wireless drilling measuring system.Like Fig. 3, shown in 4, during rotary valve mud pulse generator operate as normal, motor assembly 19 drives secondary seal power transmission shaft 17 through Hooks coupling universal coupling 18 and rotates with final drive shaft 8.And then make rotor 26 rotations, and producing the mud pressure fluctuation, ground system is decoded according to detected pressure oscillation, obtains measurement while drilling, log data.
Claims (6)
1. the continuous wave mud pulse generator comprises power and transmission device, pressure balance and seal modules and rotary valve, is installed in the non magnetic drill collar, and spearhead is the retaining part of fishing tool; It is characterized in that: power and transmission device are in the bottom, and pressure balance and seal modules are in the centre, and rotary valve is at the top; Power and transmission device are made up of motor driver, motor assembly, Hooks coupling universal coupling, secondary seal power transmission shaft and final drive shaft, and motor assembly is fixed in the resistance to compression tube, and the secondary seal power transmission shaft is connected with motor assembly through Hooks coupling universal coupling; Pressure balance and seal modules be by the resistance to compression tube, dummy piston, and the high pressure plug is formed, and the resistance to compression tube has the duct of mud circulation, and the resistance to compression tube has the duct of hydraulic oil circulation; Rotary valve is made up of stator, rotor and sleeve.
2. continuous wave mud pulse generator according to claim 1; It is characterized in that: motor assembly is made up of dc brushless motor, planetary reducer and speed probe; Speed probe is in the bottom, and dc brushless motor is in the centre, and planetary reducer is at the top.
3. continuous wave mud pulse generator according to claim 1; It is characterized in that: rotor links to each other with final drive shaft, and stator is fixed in the sleeve, and certain end play is arranged between stator and the rotor; Rotor has impeller near stator terminal, and guide wheel is arranged behind the impeller.
4. continuous wave mud pulse generator according to claim 1; It is characterized in that: the pressure of dummy piston I balance left side cavity and right cavity; Left side cavity is filled with hydraulic oil; Right chamber pressure is a mud pressure, the pressure of the cavity that dummy piston II balance cavity and secondary seal power transmission shaft and resistance to compression tube constitute, and hydraulic oil is all filled with in dummy piston II both sides.
5. continuous wave mud pulse generator according to claim 1 is characterized in that: mud gets into the right cavity in the resistance to compression tube by the duct, under the mud pressure effect; The dummy piston I is moved to the left; The dummy piston II moves right, and the hydraulic oil of left cavity is under the squeezing action of dummy piston I, and pressure raises; When pressure balance, dummy piston I, II maintain the equilbrium position; When annular space mud pressure in the drill collar reduced, the dummy piston I moved right, and the dummy piston II is moved to the left, and the hydraulic fluid pressure of left cavity reduces, and then resistance to compression urceolus external and internal pressure is consistent.
6. continuous wave mud pulse generator according to claim 1 is characterized in that: the impeller of rotor rotates with final drive shaft, through the opening and the closure of stator, discharges and obstruct mud; The guide wheel of rotor plays the power-assisted effect when pulser is worked, when pulser is not worked, play the generating effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011104524869A CN102425411A (en) | 2011-12-30 | 2011-12-30 | Continuous Wave Mud Pulse Generator |
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| CN2011104524869A CN102425411A (en) | 2011-12-30 | 2011-12-30 | Continuous Wave Mud Pulse Generator |
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| CN102425411A true CN102425411A (en) | 2012-04-25 |
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| CN103696763A (en) * | 2013-12-29 | 2014-04-02 | 中国石油集团渤海钻探工程有限公司 | Continuous wave generator rotary valve based on triangular valve body |
| CN103696762A (en) * | 2013-12-29 | 2014-04-02 | 中国石油集团渤海钻探工程有限公司 | Rotation-driven swing valve type continuous wave generator |
| CN104088628A (en) * | 2014-06-27 | 2014-10-08 | 中国石油集团渤海钻探工程有限公司 | Continuous phase position and phase shift keying modulation method based on four-blade triangular valve type |
| CN104196522A (en) * | 2014-08-15 | 2014-12-10 | 中天启明石油技术有限公司 | Balancing piston seal assembly of mud pulser |
| CN104481518A (en) * | 2014-11-03 | 2015-04-01 | 中国石油大学(华东) | Oscillation shearing type slurry pulse generator and control method thereof |
| CN105464648A (en) * | 2015-12-28 | 2016-04-06 | 北京市普利门机电高技术公司 | Pulser balancing piston assembly and pulser provided with same |
| EP3045654A1 (en) * | 2012-11-06 | 2016-07-20 | Evolution Engineering Inc. | Measurement while drilling fluid pressure pulse generator |
| CN106640059A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Continuous wave positive pulse generator driven by linear motor |
| CN106640057A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Electricity self-generating type continuous wave positive pulse generator achieving automatic adjustment of carrier frequency |
| CN106884649A (en) * | 2017-05-03 | 2017-06-23 | 中国石油大学(北京) | A kind of continuous wave signal generating means |
| CN109424357A (en) * | 2017-08-16 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of rotary valve pressure pulse generator |
| CN110195585A (en) * | 2019-04-16 | 2019-09-03 | 东营植诚机电技术开发有限公司 | A kind of magnet-type double flat weighing apparatus pulse generating unit |
| WO2020063699A1 (en) * | 2018-09-29 | 2020-04-02 | 中国石油大学(华东) | Method for designing end face structures of stator and rotor of oscillating shear valve, and oscillating shear valve |
| CN111075437A (en) * | 2020-01-08 | 2020-04-28 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | QDT type rotary valve pulser and use method thereof |
| CN111236930A (en) * | 2020-01-17 | 2020-06-05 | 中国科学院地质与地球物理研究所 | A shearing mud pulse generator |
| CN112177592A (en) * | 2020-09-29 | 2021-01-05 | 北京六合伟业科技股份有限公司 | Intelligent measurement and control system for ultra-short radius well position |
| CN112483010A (en) * | 2020-11-18 | 2021-03-12 | 中国海洋石油集团有限公司 | Downhole tool |
| CN112593929A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Motor type mud pulse generator |
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| CN113847017A (en) * | 2021-09-28 | 2021-12-28 | 西南石油大学 | Pressure pulse while-drilling communication system and method suitable for gas drilling |
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| EP3045654A1 (en) * | 2012-11-06 | 2016-07-20 | Evolution Engineering Inc. | Measurement while drilling fluid pressure pulse generator |
| US9500075B2 (en) | 2012-11-06 | 2016-11-22 | Evolution Engineering Inc. | Measurement while drilling fluid pressure pulse generator |
| CN103696762A (en) * | 2013-12-29 | 2014-04-02 | 中国石油集团渤海钻探工程有限公司 | Rotation-driven swing valve type continuous wave generator |
| CN103696763A (en) * | 2013-12-29 | 2014-04-02 | 中国石油集团渤海钻探工程有限公司 | Continuous wave generator rotary valve based on triangular valve body |
| CN103696763B (en) * | 2013-12-29 | 2016-05-18 | 中国石油集团渤海钻探工程有限公司 | A kind of continuous-wave generator rotary valve based on triangle valve body |
| CN103696762B (en) * | 2013-12-29 | 2017-03-15 | 中国石油集团渤海钻探工程有限公司 | The swing valve type continuous-wave generator of rotation driving |
| CN104088628A (en) * | 2014-06-27 | 2014-10-08 | 中国石油集团渤海钻探工程有限公司 | Continuous phase position and phase shift keying modulation method based on four-blade triangular valve type |
| CN104088628B (en) * | 2014-06-27 | 2017-02-15 | 中国石油集团渤海钻探工程有限公司 | Continuous phase position and phase shift keying modulation method based on four-blade triangular valve type |
| CN104196522A (en) * | 2014-08-15 | 2014-12-10 | 中天启明石油技术有限公司 | Balancing piston seal assembly of mud pulser |
| CN104481518A (en) * | 2014-11-03 | 2015-04-01 | 中国石油大学(华东) | Oscillation shearing type slurry pulse generator and control method thereof |
| CN106640057A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Electricity self-generating type continuous wave positive pulse generator achieving automatic adjustment of carrier frequency |
| CN106640059A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Continuous wave positive pulse generator driven by linear motor |
| CN105464648A (en) * | 2015-12-28 | 2016-04-06 | 北京市普利门机电高技术公司 | Pulser balancing piston assembly and pulser provided with same |
| CN106884649A (en) * | 2017-05-03 | 2017-06-23 | 中国石油大学(北京) | A kind of continuous wave signal generating means |
| CN106884649B (en) * | 2017-05-03 | 2023-05-23 | 中国石油大学(北京) | Continuous wave signal generating device |
| CN109424357A (en) * | 2017-08-16 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of rotary valve pressure pulse generator |
| CN109424357B (en) * | 2017-08-16 | 2023-09-01 | 中国石油化工股份有限公司 | Rotary valve type pressure pulse generator |
| WO2020063699A1 (en) * | 2018-09-29 | 2020-04-02 | 中国石油大学(华东) | Method for designing end face structures of stator and rotor of oscillating shear valve, and oscillating shear valve |
| CN110195585A (en) * | 2019-04-16 | 2019-09-03 | 东营植诚机电技术开发有限公司 | A kind of magnet-type double flat weighing apparatus pulse generating unit |
| CN110195585B (en) * | 2019-04-16 | 2023-08-25 | 东营植诚机电技术开发有限公司 | Magnet type double-balance pulse generating device |
| CN111075437A (en) * | 2020-01-08 | 2020-04-28 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | QDT type rotary valve pulser and use method thereof |
| CN111075437B (en) * | 2020-01-08 | 2023-10-20 | 中国石油天然气集团有限公司 | QDT type rotary valve pulser and use method thereof |
| CN111236930A (en) * | 2020-01-17 | 2020-06-05 | 中国科学院地质与地球物理研究所 | A shearing mud pulse generator |
| WO2021143461A1 (en) * | 2020-01-17 | 2021-07-22 | 中国科学院地质与地球物理研究所 | Shearing type mud pulse generating device |
| CN111236930B (en) * | 2020-01-17 | 2020-11-10 | 中国科学院地质与地球物理研究所 | Shear type mud pulse generating device |
| CN112177592A (en) * | 2020-09-29 | 2021-01-05 | 北京六合伟业科技股份有限公司 | Intelligent measurement and control system for ultra-short radius well position |
| CN112483010A (en) * | 2020-11-18 | 2021-03-12 | 中国海洋石油集团有限公司 | Downhole tool |
| CN112593929A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Motor type mud pulse generator |
| CN113482606A (en) * | 2021-05-14 | 2021-10-08 | 西南石油大学 | Underground signal receiving and transmitting device |
| CN113482606B (en) * | 2021-05-14 | 2023-09-22 | 西南石油大学 | Underground signal receiving and transmitting device |
| CN113847017A (en) * | 2021-09-28 | 2021-12-28 | 西南石油大学 | Pressure pulse while-drilling communication system and method suitable for gas drilling |
| US11713674B2 (en) | 2021-09-28 | 2023-08-01 | Southwest Petroleum University | Pressure pulse communication system and method during gas drilling |
| CN114526065A (en) * | 2021-12-31 | 2022-05-24 | 中国石油天然气集团有限公司 | Continuous wave pulse generation device, system, method and related application |
| CN114635655A (en) * | 2022-02-22 | 2022-06-17 | 中石化石油工程技术服务有限公司 | Pollution-free underground electric driving circulating cleaning device and horizontal well shaft cleaning method |
| CN115075804A (en) * | 2022-08-16 | 2022-09-20 | 东营诺瑞克电池有限公司 | Pulse generator for simultaneous transmission at multiple single or multiple rates |
| CN116658154A (en) * | 2023-08-01 | 2023-08-29 | 河北赛维石油设备有限公司 | Driving nipple for wireless inclinometer while drilling |
| CN116658154B (en) * | 2023-08-01 | 2023-09-22 | 河北赛维石油设备有限公司 | Driving nipple for wireless inclinometer while drilling |
| CN118938106A (en) * | 2024-10-14 | 2024-11-12 | 中国石油集团川庆钻探工程有限公司 | A pulse generator testing equipment for oil drilling |
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Application publication date: 20120425 |