CN201221355Y - Continuous wave pressure pulse generator - Google Patents
Continuous wave pressure pulse generator Download PDFInfo
- Publication number
- CN201221355Y CN201221355Y CNU200820108512XU CN200820108512U CN201221355Y CN 201221355 Y CN201221355 Y CN 201221355Y CN U200820108512X U CNU200820108512X U CN U200820108512XU CN 200820108512 U CN200820108512 U CN 200820108512U CN 201221355 Y CN201221355 Y CN 201221355Y
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- rotor
- pulse generator
- continuous wave
- pressure pulse
- stator
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Abstract
The utility model discloses a continuous-wave pressure pulse generator, which comprises a casing component. A pulse generator valve and an actuator are arranged in the casing component; wherein, the pulse generator valve comprises a rotor which is arranged in a rotating way and a stator which is fixedly positioned; the stator is arranged above the rotor in the axial direction; the actuator drives the rotor to rotate; the outer sides of the rotor and the stator are both provided with an even number of leaf grooves; the flow area of pulse generator valve is arranged with changes according to the rotation of the rotor. The utility model has the advantages of simple structure, low use and maintenance costs and low power consumption, and the signal transmission rate is not affected by the slurry displacement.
Description
Technical field
The utility model relates to a kind of instrument of wireless transmission down-hole information, particularly relevant for a kind of continuous wave pressure pulse generator, it can pass to ground to the data of the directional data that records (hole angle, azimuth, tool face azimuth), formation characteristics (gamma rays, resistivity etc.) and drilling parameter (shaft bottom the pressure of the drill, moment of torsion etc.) by the mud in the drill string as propagation medium.
Background technology
In Process of Oil Well Drilling, the technical method of measurement while drilling and well logging during is that the data with underground survey are sent to again on the ground fast exactly, to guarantee wellbore quality, improves drilling efficiency.At present, the technical method of measurement while drilling and well logging during has: the mud-pressure pulses mode is transmitted, electromagnetic transmission, sonic transmissions, intelligent drilling rod transmission, cable transmission etc.Cable transmission mode wherein, need to interrupt the work of normally creeping into, take the more rig time, therefore with boring in the operation trend of being eliminated is gradually being arranged, and the sonic transmissions mode does not still possess commercial ability, though intelligent drilling rod has industrial applications, because its high cost and Operating Complexity and integrity problem have restricted its range of application.What application was more at present is that the mud-pressure pulses mode is transmitted and electromagnetic transmission, and this transmission means of mud-pressure pulses, with more be the positive pulse of mud pressure, but because the structure and the motion mode thereof of positive pulse generator valve determined that its message transmission rate is lower.This low speed transmissions passage has seriously restricted the development of information-based drilling technology, and therefore the continuous wave pressure pulse generator of simple, reliable and stable high-speed transfer is the approach of dealing with problems.
The 3309656th, 3764968,4914637, No. 5182731 United States Patent (USP)s all relate to the continuous wave pressure pulse generator, but these apparatus structure complexity are huge and power consumption is big, thereby have restricted their scope of application.
The ZL200620030709.7 Chinese patent discloses a kind of rotary valve slurry positive pulse generator, the rotational power moment of torsion of the rotor rotation of this continuous wave pressure pulse generator derives from mud, so the transmission digit rate of signal changes along with the size of mud displacement; In addition, the amplitude of compression wave is also less.
Therefore, be necessary to provide a kind of new continuous wave pressure impulse generator, to overcome above-mentioned defective.
Above-mentioned technology contents is incorporated in the application in the mode of introducing.
The utility model content
The purpose of this utility model is, a kind of continuous wave pressure pulse generator is provided, and it is simple in structure, use and maintenance cost is low, power consumption is less, and the transfer rate of signal is not influenced by the mud displacement size.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize, a kind of continuous wave pressure pulse generator, described impulse generator comprises casing assembly, described casing assembly inside has been installed with impulse generator valve and executing agency, described impulse generator valve comprises the rotor of energy rotary setting and the stator that fixedly installs, described stator is arranged on the axial top of described rotor, described executing agency drives the rotor rotation, the outside of described rotor and stator all offers a plurality of leaf grooves, and the flow area of described impulse generator valve changes setting along with the rotation of rotor.
In preferred embodiment, described impulse generator also comprises current divider, and described current divider is fixedly installed on the above-mentioned casing assembly, and described stator is fixed on the current divider, and described current divider is between casing assembly and stator.
In preferred embodiment, described current divider comprises that cross section central authorities have the tube wall of a circular hole, this tube wall axially on be provided with a plurality of slotted eyes.
In preferred embodiment, be surrounded with a circle on the described casing assembly and regulate pad, this regulates pad between the protuberance and casing assembly of current divider.
In preferred embodiment, on the end face of rotor, be placed with the bellows-type axle sleeve between described current divider and the stator.
In preferred embodiment, described executing agency comprises motor, and the output shaft of described motor is connected with above-mentioned rotor, and described rotor is positioned at the top of motor.
In preferred embodiment, described executing agency also comprises the motor control unit of the rotary state that is used to control above-mentioned motor, and described motor control unit is connected the below of this motor.
In preferred embodiment, described executing agency inside has separate and high pressure chest upper and lower settings and low pressure chamber, described motor control unit comprises disc type magnetic drives and photoelectric encoder, the two poles of the earth of described disc type magnetic drives are installed with respectively Face to face in above-mentioned high pressure chest and low pressure chamber, a wherein utmost point of described disc type magnetic drives is connected with above-mentioned motor, and another utmost point is connected with photoelectric encoder.
In preferred embodiment, in the described high pressure chest radially a side have a through hole, a floating type piston can seal movably and be arranged in this through hole.
In preferred embodiment, in the described high pressure chest radially a side also be provided with an oilhole, it is stifled to be sealedly connected with an oil in this oilhole.
Characteristics of the present utility model and advantage are:
The utility model relates to the mud-pressure pulses in measurement while drillings such as oil, mine, geological prospecting and the well logging during, more specifically relate to a kind of continuous wave pressure pulse generator, its planform is simple, and required driving torque is less, thereby power consumption is less.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is total figure of continuous wave pressure pulse generator of the present utility model;
Fig. 2 A is the enlarged diagram of impulse generator valve of the present utility model, and it shows a kind of structure of regulating the gap between rotor and the stator;
Fig. 2 B is the enlarged diagram of impulse generator valve of the present utility model, and it shows another kind of structure of regulating the gap between rotor and the stator;
Fig. 3 is the schematic diagram of executing agency of the present utility model;
Fig. 4 A is the front view of current divider of the present utility model;
Fig. 4 B is the schematic diagram along the section of the B-B line among Fig. 4 A;
Fig. 5 A is the front view of stator of the present utility model;
Fig. 5 B is the schematic diagram along the C-C line section among Fig. 5 A;
Fig. 6 A is the front view of rotor of the present utility model;
Fig. 6 B is the schematic diagram along the D-D line section among Fig. 6 A.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model, identical parts adopt identical label.Wherein, " top " herein, " below " are at the relative position among Fig. 1.
Need to prove that at first the leaf groove shape of rotor and stator and gap have between the two determined the size of the flow area of impulse generator valve, and then have determined the size of pressure pulse wave amplitude; Wherein, the n power in the gap between rotor and the stator and pressure pulse wave amplitude are inversely proportional to.
The utility model relates to a kind of continuous wave pressure pulse generator, shown in Fig. 1-6B, it comprises casing assembly 1, described casing assembly 1 inside has been installed with impulse generator valve 2 and executing agency 3, described impulse generator valve 2 comprises the rotor 21 of rotatable setting and the stator 22 that fixedly installs, described stator 22 is arranged on the axial top of rotor 21, described executing agency 3 drives rotor 21 rotations, the outside of described rotor 21 and stator 22 all offers a plurality of leaf grooves, and the flow area of described impulse generator valve 2 (being the circulation area of mud) changes setting along with the rotation of rotor 21.
That is to say, rotor 21 rotates under the driving of executing agency 3, stator 22 transfixions, make the flow area of impulse generator valve 2 change, thereby produce pressure pulse wave, promptly when rotor 21 rotates a week, will produce impulse wave with the blade respective number of stator 22 and rotor 21, because the change frequency height of the flow area size of impulse generator valve 2, the pressure pulse wave that produces can couple together, thereby form continuous pressure pulse wave in drill string, these pressure pulse waves are being represented the information of shaft bottom situation.
In preferred implementation, above-mentioned impulse generator also comprises current divider 4, and when slurry flows during through the pulse generator, the mud that can make most by this current divider 4 is by shunting and the impulse generator valve 2 of not flowing through; This current divider 4 is fixedly installed on the casing assembly 1, and current divider 4 is as the holder of stator 22, and stator 22 is fixed on the current divider 4.More specifically, shown in Fig. 4 A-4B, this current divider 4 is preferably and is the cylindrical of hollow, be that it comprises that cross section central authorities have the tube wall 41 of a circular hole 43, this tube wall 41 axially on be provided with a plurality of slotted eyes 42, when not breaking down when 2 normal operations of impulse generator valve, a part of mud flows into impulse generator valves 2 through circular hole 43, and all the other are then shunted by slotted eye 42; And when impulse generator valve 2 breaks down and is in closed condition, all mud then can all flow through slotted eye 42 and obstructed extra pulse generator valve 2.Wherein, the upper end of current divider 4 has a protuberance 44, and these protuberance 44 usefulness bolts are connected on the casing assembly 1.
Shown in Fig. 2 A, on casing assembly 1, be surrounded with a circle and regulate pad 5, this regulates pad 5 just between the protuberance 44 and casing assembly 1 of current divider 4, by changing the adjusting pad 5 of different-thickness, axial distance between current divider 4 and the casing assembly 1 is changed, and because stator 22 fixedly installs with current divider 4, rotor 21 is fixed at axial direction with casing assembly 1, and then can regulate the gap between rotor 21 and the stator 22.Furthermore, owing to the decay of the impulse wave increase that fathoms along with well increases, so the impulse wave that certain interval produced is fit to certain depth measurement, when depth measurement is big, need make the gap between rotor 21 and the stator 22 less, and then obtain the relatively large pressure pulse wave of amplitude.
Between current divider 4 and stator 22 on the end face of rotor 21, be placed with bellows-type axle sleeve 6 and since the axle 23 upper bearing (metal)s each part can produce error when mounted, but this bellows-type axle sleeve 6 also balance offset the gap that this error is brought.
Above-mentioned executing agency 3 comprises motor 31 and is used to control the motor control unit of motor 31 rotary states, executing agency 3 inside have the high pressure chest 32 and the low pressure chamber 33 of separate and upper and lower settings, high pressure chest 32 inside have been full of oil, and elements such as motor are housed in it; Low pressure chamber 33 inside are full of air, and elements such as circuit are housed in it.The output shaft of described motor 31 is connected with rotor 21, and to drive rotor 21 rotations, rotor 21 is positioned at the top of motor 31.
Motor control unit is connected the below of motor 31, it comprises disc type magnetic drives 34 and photoelectric encoder 35, the two poles of the earth 36,37 of described disc type magnetic drives 34 are installed with respectively Face to face in above-mentioned high pressure chest 32 and low pressure chamber 33, so can guarantee the positive confinement between the high and low pressure chamber 32,33, with the problem of avoiding to bring owing to movable sealing.More specifically, a wherein utmost point 36 of disc type magnetic drives 34 is connected with above-mentioned motor 31, another utmost point 37 is connected with photoelectric encoder 35, make photoelectric encoder 35 control the rotary state of motor 31 by disc type magnetic drives 34, because the transfer rate of rotating speed of motor and downhole data is close, so between rotor 21 and the motor 31 speed adjusting gear is not set, that is to say, the rotary state of photoelectric encoder 35 control motors 31, and then control data transmission rate, this data transmission rate is relevant with the rotating speed of motor 31, and irrelevant with the displacement size of mud, data transmission capabilities of the present utility model can reach 10bps.Wherein the structure of photoelectric encoder 35 and principle are well known to those skilled in the art, so no longer describe in detail.
In addition, radially a side has a through hole 38 in high pressure chest 32, a floating type piston 39 seals movably and is arranged in this through hole 38, this floating type piston 39 can the balance high pressure chest pressure of 32 inner and extraneous mud, the external and internal pressure that reduces high pressure chest 32 is poor, satisfy the mechanical seal instructions for use, the difference that promptly seals both sides pressure only (has adopted mechanical seal because of in the executing agency 3 for several MPas, the for example movable sealing of axle 23 and seat 24, the pressure differential on mechanical seal both sides is less, only is several MPas).
A radially side of high pressure chest 32 also is provided with an oilhole, is sealedly connected with an oil in this oilhole and blocks up 7, when refueling in the past high pressure chest 32 of needs, can remove oil and block up 7, by past high pressure chest 32 interior oilings of this oilhole.
Operating process of the present utility model is as follows:
When the direction of mud along arrow A flows, because motor 31 drives rotor 21 and rotates with respect to stator 22, its flow area changes, thereby produces pressure pulse wave, this pressure pulse wave propagates into ground with the information in shaft bottom, thereby realizes underground survey data wireless transmission earthward.
Have following advantage behind the utility model employing current divider:
When if 1 impulse generator valve 2 breaks down, because the slotted eye 42 of current divider 4 shunts mud without the impulse generator valve, the mud runner that therefore still leaves enough areas guarantees normally carrying out of drillng operation;
2, when impulse generator valve 2 cuts out, bear under the condition of pressure capability satisfying system, the amplitude of compression wave can be big as much as possible, thus can solve ripple in communication process because loss causes ground not receive the difficult problem of signal.Through test, the amplitude 220psi of compression wave of the present utility model.
Shown in Fig. 2 B, it shows the rotor of another kind of regulating impulse generator valve 2 and the structure in the gap between the stator.In the present embodiment, be provided with between above-mentioned rotor 21 and the stator 22 and adjust pad 5 ', this adjustment pad 5 ' can be used for adjusting the gap between rotor 21 and the stator 22 equally.
Other structures, operating principle and the beneficial effect of present embodiment is identical with embodiment 1, does not repeat them here.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations and the modification done under the prerequisite that does not break away from design of the present utility model and principle all should belong to the scope that the utility model is protected.
Claims (10)
1, a kind of continuous wave pressure pulse generator, it is characterized in that, described impulse generator comprises casing assembly, described casing assembly inside has been installed with impulse generator valve and executing agency, described impulse generator valve comprises the rotor of energy rotary setting and the stator that fixedly installs, described stator is arranged on the axial top of described rotor, described executing agency drives the rotor rotation, the outside of described rotor and stator all offers a plurality of leaf grooves, and the flow area of described impulse generator valve changes setting along with the rotation of rotor.
2, continuous wave pressure pulse generator as claimed in claim 1, it is characterized in that described impulse generator also comprises current divider, described current divider is fixedly installed on the above-mentioned casing assembly, described stator is fixed on the current divider, and described current divider is between casing assembly and stator.
3, continuous wave pressure pulse generator as claimed in claim 2 is characterized in that, described current divider comprises that cross section central authorities have the tube wall of a circular hole, this tube wall axially on be provided with a plurality of slotted eyes.
4, continuous wave pressure pulse generator as claimed in claim 2 is characterized in that, is surrounded with a circle on the described casing assembly and regulates pad, and this regulates pad between the protuberance and casing assembly of current divider.
5, as each described continuous wave pressure pulse generator of claim 2-4, it is characterized in that, on the end face of rotor, be placed with the bellows-type axle sleeve between described current divider and the stator.
6, as each described continuous wave pressure pulse generator of claim 1-4, it is characterized in that described executing agency comprises motor, the output shaft of described motor is connected with above-mentioned rotor, and described rotor is positioned at the top of motor.
7, continuous wave pressure pulse generator as claimed in claim 6 is characterized in that, described executing agency also comprises the motor control unit of the rotary state that is used to control above-mentioned motor, and described motor control unit is connected the below of this motor.
8, continuous wave pressure pulse generator as claimed in claim 7, it is characterized in that, described executing agency inside has separate and high pressure chest upper and lower settings and low pressure chamber, described motor control unit comprises disc type magnetic drives and photoelectric encoder, the two poles of the earth of described disc type magnetic drives are installed with respectively Face to face in above-mentioned high pressure chest and low pressure chamber, a wherein utmost point of described disc type magnetic drives is connected with above-mentioned motor, and another utmost point is connected with photoelectric encoder.
9, continuous wave pressure pulse generator as claimed in claim 8 is characterized in that, in the described high pressure chest radially a side have a through hole, a floating type piston can seal movably and be arranged in this through hole.
10, continuous wave pressure pulse generator as claimed in claim 9 is characterized in that, in the described high pressure chest radially a side also be provided with an oilhole, it is stifled to be sealedly connected with an oil in this oilhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820108512XU CN201221355Y (en) | 2008-06-11 | 2008-06-11 | Continuous wave pressure pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820108512XU CN201221355Y (en) | 2008-06-11 | 2008-06-11 | Continuous wave pressure pulse generator |
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| CN201221355Y true CN201221355Y (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820108512XU Expired - Fee Related CN201221355Y (en) | 2008-06-11 | 2008-06-11 | Continuous wave pressure pulse generator |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949287A (en) * | 2010-07-30 | 2011-01-19 | 中国石油大学(华东) | Method and device for modulating underground measurement while drilling data based on drilling fluid continuous pressure wave technology |
| CN102200009A (en) * | 2010-12-20 | 2011-09-28 | 中国石油集团钻井工程技术研究院 | Method for processing MWD (Measurement While Drilling) underground continuous wave signal |
| CN103015989A (en) * | 2012-12-26 | 2013-04-03 | 西安思坦仪器股份有限公司 | Downhole continuous wave mud pulse generator |
| CN103410503A (en) * | 2013-09-04 | 2013-11-27 | 上海神开石油化工装备股份有限公司 | Continuous wave mud pulse generator |
| 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 |
| 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 |
| CN110857621A (en) * | 2018-08-15 | 2020-03-03 | 中国石油天然气股份有限公司 | Automatic layered water and oil extraction system |
| CN114850144A (en) * | 2022-04-28 | 2022-08-05 | 南通海狮船舶机械有限公司 | Ship pipeline flushing pulse generating device |
-
2008
- 2008-06-11 CN CNU200820108512XU patent/CN201221355Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949287A (en) * | 2010-07-30 | 2011-01-19 | 中国石油大学(华东) | Method and device for modulating underground measurement while drilling data based on drilling fluid continuous pressure wave technology |
| CN102200009A (en) * | 2010-12-20 | 2011-09-28 | 中国石油集团钻井工程技术研究院 | Method for processing MWD (Measurement While Drilling) underground continuous wave signal |
| CN102200009B (en) * | 2010-12-20 | 2013-05-08 | 中国石油集团钻井工程技术研究院 | Method for processing MWD (Measurement While Drilling) underground continuous wave signal |
| CN103015989A (en) * | 2012-12-26 | 2013-04-03 | 西安思坦仪器股份有限公司 | Downhole continuous wave mud pulse generator |
| CN103015989B (en) * | 2012-12-26 | 2015-07-15 | 西安思坦仪器股份有限公司 | Downhole continuous wave mud pulse generator |
| CN103410503A (en) * | 2013-09-04 | 2013-11-27 | 上海神开石油化工装备股份有限公司 | Continuous wave mud pulse generator |
| 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 |
| 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 |
| CN110857621A (en) * | 2018-08-15 | 2020-03-03 | 中国石油天然气股份有限公司 | Automatic layered water and oil extraction system |
| CN114850144A (en) * | 2022-04-28 | 2022-08-05 | 南通海狮船舶机械有限公司 | Ship pipeline flushing pulse generating device |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 Termination date: 20130611 |