CN203114280U - Underground continuous wave mud-pulse generator - Google Patents
Underground continuous wave mud-pulse generator Download PDFInfo
- Publication number
- CN203114280U CN203114280U CN 201220729701 CN201220729701U CN203114280U CN 203114280 U CN203114280 U CN 203114280U CN 201220729701 CN201220729701 CN 201220729701 CN 201220729701 U CN201220729701 U CN 201220729701U CN 203114280 U CN203114280 U CN 203114280U
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- continuous wave
- main shaft
- hole
- pulse generator
- mud
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Abstract
The utility model relates to an underground continuous wave mud-pulse generator. The underground continuous wave mud-pulse generator comprises a continuous wave pulse generating component and a driving component which is used for driving the continuous wave to make the component work, wherein the continuous wave pulse generating component comprises a shell, a stator and a rotor sequentially arranged in the shell from top to bottom; the rotor can axially rotate around the axial direction of the shell; mud flowing holes are formed in the stator and the rotor along the axial direction of the shell; an end cover is arranged at the upper end of the shell; a through hole used for making mud pass through is formed in the end cover; the mud flowing hole in the stator is communicated with the through hole in the end cover; the mud flowing hole in the rotor is communicated with a side opening in the shell; and the driving component drives the rotor to rotate. The utility model provides the underground continuous wave mud-pulse generator which is reliable in work and can be used for a wireless while drilling system to generate a mud pulse signal.
Description
Technical field
The utility model belongs to oil measurement while drilling field, relates to a kind of down-hole slurry impulse generator, relates in particular to a kind of down-hole continuous wave mud pulse generator by mud wave transmission shaft bottom measuring-signal.
Background technology
Oil measurement while drilling field utilizes the drilling parameter and the formation parameter that record in time to adjust bit course, make it to creep into along the target zone direction, and the formation parameter that obtains of well logging during more is conducive to oil-containing, gas evaluation to bad ground near the reset condition on stratum.The well logging during instrument is placed in the non magnetic drill collar, except measuring conventional loggings such as orientation parameter (hole deviation, orientation, tool face azimuth), gamma, resistivity, the velocity of sound, neutron porosity, density, also can measure drilling parameters such as the pressure of the drill, moment of torsion, rotating speed, annular pressure.The signal transmission form of well logging during is divided into wired and wireless two kinds, and wire transmission comprises: cable transmission, extraordinary drill pipe transmission and optical fibre transmission etc., wireless transmission comprises: mud-pulse, electromagnetic wave, sound wave etc.Mud-pulse can be used for deep-well and lower development cost, makes mud-pulse become the transmission means that extensively adopts at present.
Mud pulse generator can be divided into by its operating principle as the core of measurement while drilling: positive pulse, negative pulse and continuous wave impulse generator.Negative pulse is because serious to shaft lining breakage, the complex structure of downhole probe, and assembling, Operation and maintenance inconvenience are seldom used.Mud positive pulse generator uses general, but transfer rate is lower, along with the development of technology, can not satisfy the needs of big data quantity transmission.The advantage of continuous wave mud pulse generator is that transmission speed is fast, is one of technology of giving priority at present.
The continuous wave mud pulse generator is the core of well logging during system, and existing continuous wave mud pulse generator exists variety of problems, the electric virtual connections that under the underground vibrating environment, causes such as the pin hole connected mode, the balance oil sac is corroded or leakage of oil and cause the insufficient pressure can not the balance down-hole pressure, excessive or the running speed of hole deviation is too fast to be caused instrument to take off key and causes the problem of no signal, instrument can not be salvaged, and instrument is scrapped etc. when bit freezing occurring.Continuous wave mud pulse generator signal relatively a little less than, it is relatively large influenced by noise, and signal processing system is had relatively high expectations.
The utility model content
In order to solve the above-mentioned technical problem that exists in the background technology, the utility model provides a kind of reliable operation and can be used for the down-hole continuous wave mud pulse generator that the wireless drilling system produces the mud-pulse signal.
Technical solution of the present utility model is: the utility model provides a kind of down-hole continuous wave mud pulse generator, and its special character is: described down-hole continuous wave mud pulse generator comprises continuous wave pulse generation component and the driven unit that is used for driving the work of continuous wave generation component; Described continuous wave pulse generation component comprises shell, be successively set on from top to bottom enclosure stator and can be around shell axially carry out axial rotor rotated; Be provided with the mud flowing hole on described stator and the rotor and along the axial direction of shell; The upper end of described shell is provided with end cap; Described end cap is provided with the through hole that passes through for mud; Mud flowing hole on the described stator and the through hole on the end cap connect; The lateral opening of described epitrochanterian flowing hole and shell connects; Described driven unit drives rotor and rotates.
Above-mentioned driven unit comprises the protection tube, is arranged on the motor of enclosure and protecting inner axial rotation and the axially movable main shaft that can carry out around the protection tube of tube; Described motor links to each other with main shaft; Described main shaft links to each other with rotor by key.
The whole section of above-mentioned main shaft is cross; The axial axially extending bore of perforation main shaft of the axial setting of described main shaft; Described stator and rotor axially be provided with the through-core hole that main shaft is stretched into; One end of described main shaft stretches in the through-core hole of rotor and stator successively, and fixedlys connected with rotor by key; The end that described main shaft stretches out stator is provided with the pressure transmission piston corresponding with the axially extending bore position; Be provided with the upper strata closed cavity between described main shaft and the protection tube; Be provided with lower floor's closed cavity between described main shaft and the motor; Be perfused with silicone oil or hydraulic oil in described upper strata closed cavity and the lower floor's closed cavity; Link to each other with motor axially extending bore and the lower floor's closed cavity of an end of described main shaft connects; Described main shaft can axially endwisely slipping along motor under the effect of mud pressure and silicone oil or hydraulic oil.
Above-mentioned driven unit also comprises the shaft coupling that is arranged between motor and the main shaft and is used for being connected motor and main shaft; Described shaft coupling interference is installed in the main shaft lower end, and side opening aligns with the main shaft upper-side hole; Described main shaft drives shaft coupling under the effect of mud pressure and silicone oil or hydraulic oil can axially endwisely slipping along motor.
Above-mentioned down-hole continuous wave mud pulse generator also comprises the lower house that is arranged on outer casing bottom and links to each other with shell; Sidewall on the described lower house is provided with dummy piston; Described driven unit also comprises for the fluid passage that connects between lower floor's closed cavity and the dummy piston.
Above-mentioned down-hole continuous wave mud pulse generator also comprises the fishing head that is arranged on the end cap.
Above-mentioned down-hole continuous wave mud pulse generator also comprises the combined seal ring that is used for can and drill collar inwall that is arranged on the shell; Described combined seal ring is one or multi-channel.
Above-mentioned lower house inside also is provided with the aviation plug that links to each other for Other Instruments.
The utility model has the advantages that:
The utility model provides a kind of down-hole continuous wave mud pulse generator, is made up of parts such as fishing head, rotor, stator, pressure transmission piston, main shaft, motor, dummy piston, aviation plugs.The utility model is to be installed in the non magnetic drill collar in use, is fixed in the drill collar by pin, can salvage.Rotor and stator are provided with plurality of holes, and the rotation of driven by motor rotor makes and the circulation area cyclically-varying produces the continually varying pressure pulse in the mud of rotor top.The gap of described rotor and stator can be regulated automatically along with the size of down-hole pressure, can adapt to the variation of well depth within the specific limits, and not reduce pulse strength.Pressure balance on the described rotor has reduced the requirement to structural strength.The bottom aviation plug is flexible coupling with following extension instrument, has avoided because the electric virtual connections that vibration causes.The utility model is simple in structure, applied widely, energy consumption is low, reliable operation, be easy to safeguard, can be used for the wireless drilling system and produces the mud-pulse signal.
Description of drawings
Fig. 1 is the overall structure schematic diagram of mud pulse generator provided by the utility model;
Wherein:
The 1-fishing head; The 2-screw; The 3-end cap; The 4-combined seal ring; The 5-shell; The 6-stator; The 7-nut; 8-pressure transmission piston; The 9-rotor; The 10-key; The 11-stationary magazine creel; The 12-main shaft; The 13-shaft coupling; 14-protects tube; The 15-motor housing; 16-oil is stifled; The 17-lower house; The 18-motor; 19-piston urceolus; The 20-dummy piston; The 21-pressure ring; 22-pressure-bearing plug; 23-anchor dish; The 24-aviation plug; The 25-helmet.
The specific embodiment
As shown in Figure 1, the utility model provides a kind of down-hole continuous wave mud pulse generator, and this down-hole continuous wave mud pulse generator comprises continuous wave pulse generation component and the driven unit that is used for driving the work of continuous wave generation component; Continuous wave pulse generation component comprises shell 5, be successively set on from top to bottom shell 5 inside stator 6 and can around shell 5 axially rotate and can be around the rotor that axially moves axially 9 of shell 5; Be provided with the mud flowing hole on stator 6 and the rotor 9 and along the axial direction of shell 5; Shell 5 upper ends are provided with end cap 3; End cap 3 is provided with the through hole that passes through for mud; Mud flowing hole on the stator 6 and the through hole on the end cap 3 connect; The opening of the flowing hole on the rotor 9 and shell 5 connects; Driven unit drives rotor 9 and rotates.
Driven unit comprises protection tube 14, is arranged on the motor 18 of shell 5 inside and protecting tube 14 inside can carry out around axial rotation and the axially movable main shaft 12 of protecting tube 14; Motor 18 links to each other with main shaft 12; Main shaft 12 links to each other with rotor 9 by key 10; Motor 18 is fixed on the lower house 17 by motor housing 15.
Driven unit also comprises the shaft coupling 13 that is arranged between motor 18 and the main shaft 12 and is used for being connected motor 18 and main shaft 12; Shaft coupling 13 interference are installed in the main shaft lower end, and side opening aligns with the main shaft upper-side hole; Main shaft 12 drives shaft coupling 13 under the effect of mud pressure and silicone oil or hydraulic oil can axially endwisely slipping along motor 18.
Down-hole continuous wave mud pulse generator also comprises the lower house 17 that is arranged on shell 5 bottoms and links to each other with shell 5; Sidewall on the lower house 17 is provided with dummy piston 20; Driven unit comprises that also dummy piston 20 is arranged on by piston urceolus 19 on the sidewall of lower house 17 for the fluid passage that connects between lower floor's closed cavity and the dummy piston 20, and four screws are fixed and clamped between piston urceolus 19 and the lower house.
Down-hole continuous wave mud pulse generator also comprises the fishing head 1 that is arranged on the end cap 3.
Down-hole continuous wave mud pulse generator also comprises the combined seal ring 4 that is used for can 5 and drill collar inwall that is arranged on the shell 5; Combined seal ring 4 is one or multi-channel.
The utility model is installed in the non magnetic drill collar, is fixed in the drill collar by pin, lifts by fishing head 1 during bit freezing, instrument can be taken out safely after pin is cut off.Fishing head 1 is by being threaded on the end cap 3, and end cap 3 and shell 5 are fixing by screw 2, are sealed by combined seal ring 4 between mud pulse generator and the drill collar, to reduce mud washing away instrument.End cap 3 belows are stator 6, stationary magazine creel 11, protection tube 14 successively; rotor 9 is installed on the main shaft 12 by key 10; pressure transmission piston 8 is installed in the endoporus of main shaft 12; nut 7 restriction pressure transmission pistons 8 outer moving; shaft coupling 13 is used for connecting main shaft 12 and motor 18, and 12 in motor can endwisely slip in shaft coupling 13, and motor 18 is installed in a confined space; and being full of silicone oil or hydraulic oil, dummy piston 20 is used for the pressure of balance motor 18 confined spaces and outside.
Rotor and stator are provided with plurality of holes, and the rotation of driven by motor rotor makes and the circulation area cyclically-varying produces the continually varying pressure pulse in the mud of rotor top.The gap of rotor and stator can be regulated automatically along with the size of down-hole pressure, can adapt to the variation of well depth within the specific limits, and not reduce pulse strength.Pressure balance on the described rotor has reduced the requirement to structural strength.The bottom aviation plug is flexible coupling with following extension instrument, has avoided because the electric virtual connections that vibration causes.
Downhole data through coding after, drive motors drives rotor 9 and is rotated by rule, the cycle open and close of flowing hole between rotor 9 and the stator 6 makes rotor 9 tops generation continually varying mud-pressure pulses.Gap and pulse strength have substantial connection between rotor 9 and the stator 6, and the gap is more little, and pulse strength is more big, but the gap is when reducing, and mud is more serious to washing away of rotor.Form a confined space between main shaft 12 and the protection tube 14 in this utility model; this confined space is full of silicone oil or hydraulic oil; because the compressibility of liquid; well depth is bigger; when bottom pressure increased, main shaft 12 drove rotors 9 and moves up, and made the gap of 9 of stator 6 and rotors reduce; mud-pulse intensity increases, and satisfies the needs of burst transmissions.Less when well depth, when bottom pressure reduced, main shaft 12 drove rotors 9 and moves down, and made the gap increase of 9 of stator 6 and rotors, and mud-pulse intensity weakens, and reduces mud washing away rotor 9 when satisfying the burst transmissions needs.
This utility model rotor 9 adopts pressure balanced design up and down, the pressure on rotor 9 tops is delivered on the end face of main shaft 12 bottoms by pressure transmission piston 8, pass through pressure balanced design, make pressure balance on the rotor 9, saved thrust bearing in the past, simplify the structure, improved the intensity of instrument, thereby can improve the amplitude of pressure pulse.
Claims (8)
1. a down-hole continuous wave mud pulse generator is characterized in that: the driven unit that described down-hole continuous wave mud pulse generator comprises continuous wave pulse generation component and is used for the work of driving continuous wave generation component; Described continuous wave pulse generation component comprises shell, be successively set on from top to bottom enclosure stator and can around shell axially rotate and can be around the rotor that axially moves axially of shell; Be provided with the mud flowing hole on described stator and the rotor and along the axial direction of shell; One end of described shell is provided with end cap; Described end cap is provided with the through hole that passes through for mud; Mud flowing hole on the described stator and the through hole on the end cap connect; The opening of described epitrochanterian flowing hole and shell connects; Described driven unit drives rotor and rotates.
2. down-hole according to claim 1 continuous wave mud pulse generator is characterized in that: described driven unit comprises the protection tube, be arranged on the motor of enclosure and at inner axial rotation and the axially movable main shaft that can carry out around the protection tube of protection tube; Described motor links to each other with main shaft; Described main shaft links to each other with rotor by key.
3. down-hole according to claim 2 continuous wave mud pulse generator, it is characterized in that: the whole section of described main shaft is cross; Axially being provided with of described main shaft connects the axial axially extending bore of main shaft; Described stator and rotor axially be provided with the through-core hole that main shaft is stretched into; One end of described main shaft stretches in the through-core hole of rotor and stator successively, and fixedlys connected with rotor by key; The end that described main shaft stretches out stator is provided with the pressure transmission piston corresponding with the axially extending bore position; Be provided with the upper strata closed cavity between described main shaft and the protection tube; Be provided with lower floor's closed cavity between described main shaft and the motor; Be perfused with silicone oil or hydraulic oil in described upper strata closed cavity and the lower floor's closed cavity; Link to each other with motor axially extending bore and the lower floor's closed cavity of an end of described main shaft connects; Described main shaft can axially endwisely slipping along motor under the effect of mud pressure and silicone oil or hydraulic oil.
4. down-hole according to claim 3 continuous wave mud pulse generator is characterized in that: described driven unit also comprises the shaft coupling that is arranged between motor and the main shaft and is used for being connected motor and main shaft; Described shaft coupling interference is installed in the main shaft lower end; Described main shaft drives shaft coupling under the effect of mud pressure and silicone oil or hydraulic oil can axially endwisely slipping along motor.
5. down-hole according to claim 4 continuous wave mud pulse generator, it is characterized in that: described down-hole continuous wave mud pulse generator also comprises the lower house that is arranged on outer casing bottom and links to each other with shell; Sidewall on the described lower house is provided with dummy piston; Described driven unit also comprises for the fluid passage that connects between lower floor's closed cavity and the dummy piston.
6. according to the described down-hole of the arbitrary claim of claim 1-5 continuous wave mud pulse generator, it is characterized in that: described down-hole continuous wave mud pulse generator also comprises the fishing head that is arranged on the end cap.
7. down-hole according to claim 6 continuous wave mud pulse generator, it is characterized in that: described down-hole continuous wave mud pulse generator also comprises the combined seal ring that is used for can and drill collar inwall that is arranged on the shell; Described combined seal ring is one or multi-channel.
8. down-hole according to claim 5 continuous wave mud pulse generator, it is characterized in that: described lower house inside also is provided with the aviation plug that links to each other for Other Instruments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220729701 CN203114280U (en) | 2012-12-26 | 2012-12-26 | Underground continuous wave mud-pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220729701 CN203114280U (en) | 2012-12-26 | 2012-12-26 | Underground continuous wave mud-pulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114280U true CN203114280U (en) | 2013-08-07 |
Family
ID=48894640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220729701 Withdrawn - After Issue CN203114280U (en) | 2012-12-26 | 2012-12-26 | Underground continuous wave mud-pulse generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114280U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106884649A (en) * | 2017-05-03 | 2017-06-23 | 中国石油大学(北京) | A kind of continuous wave signal generating means |
-
2012
- 2012-12-26 CN CN 201220729701 patent/CN203114280U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130807 Effective date of abandoning: 20150715 |
|
| RGAV | Abandon patent right to avoid regrant |