CN202520306U - Positive pulse device for mud under well - Google Patents
Positive pulse device for mud under well Download PDFInfo
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- CN202520306U CN202520306U CN2012200920081U CN201220092008U CN202520306U CN 202520306 U CN202520306 U CN 202520306U CN 2012200920081 U CN2012200920081 U CN 2012200920081U CN 201220092008 U CN201220092008 U CN 201220092008U CN 202520306 U CN202520306 U CN 202520306U
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- positive pulse
- piston
- plunger
- pulse device
- plunger pump
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Abstract
The utility model discloses a positive pulse device for high-speed mud under a well. The positive pulse device for the mud under the well comprises an output terminal, a valve body, a generator assembly, a middle bearing sleeve and a top assembly, wherein the output terminal and the valve body is connected in sequence. The top assembly comprises a piston, a spring, a plunger pump and a swash plate, wherein the piston and the spring are installed inside a top outer shell, and the plunger pump and the swash plate are installed at the upper end of the middle bearing sleeve. The plunger pump comprises a plunger pump shell and a plunger which is installed inside the plunger pump shell, and the top outer shell is provided with a oil discharging hole which is positioned a lower end portion of the top outer shell. A return spring is mounted between the top outer shell and the piston. To overcome the defect that a pulser in the prior art is low in data transmission, the positive pulse device for the mud under the well improves the oil discharging hole, the punger, the slant angle of the swash plate, and other components of the top assembly, shortens the round tripping distance of the piston, and enhances the pulse velocity. Besides, the return spring is added between the piston and the plunger pump to change the return response speed of the pulser, and therefore the response speed of the pulser is enhanced and the speed of data transmission of a high-speed pulse interval data format is guaranteed.
Description
Technical field
The utility model belongs to the petroleum drilling engineering field, and particularly a kind of oil drilling wireless drilling that is used for is measured the downhole hardware that hole deviation reaches relevant geologic parameter.
Background technology
MWD (measurement while drilling) and LWD (well logging during) accomplish wide-angle and horizontal well drilling; Carry out well site data acquisition, explanation and decision-making in-situ in real time and instruct the key technology of accomplishing geologic steering drilling; Impulse generator is a wireless drilling measuring system most important component, mainly passes through the wave transmission signal of drilling fluid.The basic principle of mud-pulse transmission be the signal that measures of downhole sensor through coding, by the Drive and Control Circuit of pulser, drive the work such as cone valve, rotary valve or rotor of slurry pulsator; The generation effect of damming; Thereby generation mud-pressure pulses, the pressure pulse mud in drill string is delivered to ground, and the pressure sensor that the ground column is installed receives pressure pulse signal; Through behind the filter shape; By the decoding of the decode system on ground, thereby can obtain the data-signal that transmit up the down-hole, characteristics such as that this method possesses skills is ripe, simple in structure, dependable performance.
At present, the drilling fluid pulse transmission means has three kinds of negative pulses, continuous wave pulse, positive pulse:
1, the operating principle of mud negative pulse generator is through opening an eduction valve, can make the interior discharge orifice of mud on eduction valve and drill collar of drill string flow to bore hole annulus, thereby the mud pressure that causes drill string inside reducing; But because mud negative pulse generator is stronger to the stratum erosion attack; Can cause more serious destruction to the borehole wall, also more intense to component erosion effect, and also power consumption is bigger; The structure more complicated of instrument is unfavorable for assembling, operation, maintenance.
2, the operating principle of mud continuous wave impulse generator is to utilize rotary valve to produce the pressure continuous wave of fixed frequency; According to the phase shift of continuous wave with the information Code And Decode, but also there are problems such as complex structure, manufacturing cost costliness in mud continuous wave impulse generator.
3, the operating principle of mud positive pulse generator is through the relative position of needle-valve and aperture in the change mud positive pulse generator, promptly changes the sectional area of runner, thereby causes the rising of the mud pressure that drill string is inner.The mud positive pulse transmission means is that use is the most general, the most stable in present measurement while drilling and the well logging during, the most reliable a kind of method.The MK6 pulser is the impulse generator that adopts mud positive pulse transmission signal, and its operating principle is the most general, the most reliable and the most stable a kind of method of using among present MWD (measurement while drilling) and the LWD (well logging during) with the above.This system adopts mechanical, electrical, liquid integrated structure, specifically is made up of lead-out terminal, valve body and alternator assembly, intermediate bearing sleeve, top assembly four parts.The transfer of data coded system of this system's support is the manchester coded system.This system advantage is a steady signal transmission, reliable, and downhole probe is simple in structure, size is little, uses Operation and maintenance convenient.But because mud positive pulse transmit signal data transmission speed is slower, so this system is not suitable for transmitting a large amount of geologic information parameters.
The utility model content
Existing mud pulse generator can not satisfy the requirement of a large amount of geologic parameters of transmission, and the purpose of the utility model provides a kind of down-hole slurry positive pulse device, and transfer rate is high, to satisfy the requirement of a large amount of geologic parameters of transmission.
For achieving the above object, the technical scheme of the utility model provides a kind of down-hole slurry positive pulse device, comprises lead-out terminal, valve body and the alternator assembly, intermediate bearing sleeve and top assembly four parts that connect successively; Wherein said top assembly comprises piston and the spring that is installed in the top enclosure, and the plunger displacement pump and the swash plate that are installed in the intermediate bearing set upper side; Plunger displacement pump comprises plunger pump case and the plunger that is positioned at the plunger pump case, and top enclosure is provided with the draining hole, and the position in said draining hole is positioned at the lower end of top enclosure; Between top enclosure and piston, return spring is set.
Further, the position in above-mentioned draining hole is positioned at the 19.26mm-19.34mm place of the lower end of top enclosure.
Further, the position in above-mentioned draining hole is positioned at the 19.3mm place of the lower end of top enclosure.
Further, above-mentioned diameter of plunger is 6.997mm-7.003mm.
Further, above-mentioned diameter of plunger is 7mm.
Further, the angle of slope of above-mentioned swash plate is 11 °-13 °.
Further, the angle of slope of above-mentioned swash plate is 12 °.
By on can know that the utility model overcomes the slow shortcoming of existing MK6 pulser transmission data on original MK6 pulser basis; Top assembly part and plunger displacement pump are partly improved; Change diameter of plunger into φ 7mm by φ 6.5mm, change the swash plate angle of slope into 12 ° by 9 °, it is maximum 3.1 liters/minute that pump delivery is promoted by maximum 1.6 liters/minute; Simultaneously top enclosure φ 1mm draining hole site is moved down 4.7mm so that piston stroke changes 5.3mm into by original 9.5mm than existing installation site; Shortened piston and come and gone distance, improved pulse rate, between piston and pump, increased return spring to change pulser backhaul reaction speed; Thereby improved the response speed of pulser, guaranteed the data transmission bauds of two-forty pulse interval data form.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the top decomposing schematic representation of the utility model.
Fig. 3 a and Fig. 3 b are the part cut away view of the utility model, and wherein 16 is top enclosure, and 17 is return spring, and 18 is the draining hole, and 19 is the plunger pump case, and 20 is plungers pump plunger, and 21 is swash plate, and 22 is piston.
The specific embodiment
As shown in Figure 1; It is the structural representation of the utility model down-hole slurry positive pulse device; Said down-hole slurry positive pulse device comprises lead-out terminal 1, valve body and alternator assembly 2, intermediate bearing sleeve 3 and top assembly 4 four parts, and this four part connects in order successively.Being provided with of said lead-out terminal guarantees the connection of communicating by letter of down-hole slurry positive pulse device and other instruments, and generator is generated electricity can be transmitted, and receives the control signal of other instruments simultaneously; Said control valve mainly is the open and close of control impuls device hydraulic circuit, and control top lift bar moves back and forth to realize sending pulse; If said generator main provides electric energy for each instrument of down-hole; Said intermediate bearing sleeve assembly mainly is made up of magnetic axis, generator disk and plunger displacement pump, thereby wherein the coupling of magnetic axis and peripheral element rotor magnetic and rotation drive the disk generating simultaneously and make plunger displacement pump work, and wherein whether plunger displacement pump work loads controlled valve and control.
Fig. 2 is the top structure sketch map of the utility model down-hole slurry positive pulse device; As shown in the figure; Lifting arm 5 passes glue cup 6, centralizer body 7, lifting arm jump ring 8, top enclosure 9, fairlead 10 and spring 11 successively and is connected with piston 12; The pump housing 13 is positioned at top enclosure 9 belows, and skin is provided with pump housing pillar 14.Said top enclosure 9 is provided with draining hole 15.
Fig. 3 a and Fig. 3 b are the part cut away view of the utility model down-hole slurry positive pulse device, and wherein 16 is top enclosure, and 17 is return spring, and 18 is the draining hole, and 19 is the plunger pump case, and 20 is plungers pump plunger, and 21 is swash plate, and 22 is piston.During work, shown in Fig. 3 a, draining hole 18 is closed; After piston 22 is accepted to load hydraulic oil, be pushed and be moved to the left, shown in Fig. 3 b; Open in the draining hole, and the top received the mud pressure piston to be pushed to move right to return, realized the pulse generation of pulser when oil cylinder was unloaded.Through strengthening the diameter of plungers pump plunger 20, make the diameter of this plungers pump plunger 20 increase to φ 6.997mm-7.003mm by φ 6.5mm, preferred diameter is φ 7mm, the sealed volume that has changed plunger displacement pump changes, thereby has increased the plunger pump delivery.Through increasing the angle of slope of swash plate 5, make this angle of slope change 11 °-13 ° into by 9 °, preferred angle of slope is 12 °, the sealed volume that has changed plunger displacement pump changes, thereby has increased the plunger pump delivery.Through improvement, realized that the plunger pump delivery rises to maximum 3.1 liters/minute by maximum 1.6 liters/minute, thereby increased the plunger pump delivery plungers pump plunger diameter and swash plate angle of slope.Between top enclosure 16 and piston 22, return spring 17 is set, thereby has improved the return responding ability of piston.Be that the draining hole site of φ 1mm moves down 4.7mm with respect to existing installation site with the diameter that is provided with on the top enclosure 16 simultaneously; Be located at the 19.26mm-19.34mm place of the lower end of top enclosure; Be preferably placed at the 19.3mm place of the lower end of top enclosure; So that piston 22 strokes change 5.3mm into by original 9.5mm, shortened the round distance of piston 22, changed piston 22 backhaul reaction speeds.Through return spring being set and changing the draining hole site, shortened the time of pulse generation, improved the response speed of pulser, guaranteed the data transmission bauds of two-forty pulse interval data form.
Claims (7)
1. a down-hole slurry positive pulse device comprises lead-out terminal, valve body and the alternator assembly, intermediate bearing sleeve and top assembly four parts that connect successively; Wherein said top assembly comprises piston and the spring that is installed in the top enclosure, and the plunger displacement pump and the swash plate that are installed in the intermediate bearing set upper side; Plunger displacement pump comprises plunger pump case and the plunger that is positioned at the plunger pump case, and top enclosure is provided with the draining hole, it is characterized in that, the position in said draining hole is positioned at the lower end of top enclosure; Between top enclosure and piston, return spring is set.
2. down-hole slurry positive pulse device according to claim 1 is characterized in that the position in said draining hole is positioned at the 19.26mm-19.34mm place of the lower end of top enclosure.
3. down-hole slurry positive pulse device according to claim 2 is characterized in that the position in said draining hole is positioned at the 19.3mm place of the lower end of top enclosure.
4. down-hole slurry positive pulse device according to claim 1 is characterized in that said diameter of plunger is 6.997mm-7.003mm.
5. down-hole slurry positive pulse device according to claim 4 is characterized in that said diameter of plunger is 7mm.
6. down-hole slurry positive pulse device according to claim 1 is characterized in that, the angle of slope of said swash plate is 11 °-13 °.
7. down-hole slurry positive pulse device according to claim 6 is characterized in that the angle of slope of said swash plate is 12 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200920081U CN202520306U (en) | 2012-03-12 | 2012-03-12 | Positive pulse device for mud under well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200920081U CN202520306U (en) | 2012-03-12 | 2012-03-12 | Positive pulse device for mud under well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520306U true CN202520306U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200920081U Expired - Lifetime CN202520306U (en) | 2012-03-12 | 2012-03-12 | Positive pulse device for mud under well |
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| Country | Link |
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| CN (1) | CN202520306U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536217A (en) * | 2012-03-12 | 2012-07-04 | 中天启明石油技术有限公司 | Positive pulse device for slurry under shaft |
| CN103925183A (en) * | 2014-04-22 | 2014-07-16 | 北京嘉禾汇拓石油技术有限公司 | Axial plunger pump for mud pulse generator |
| CN105626049A (en) * | 2016-03-28 | 2016-06-01 | 广东普洛测控科技有限公司 | Underground high-frequency pulse generator |
-
2012
- 2012-03-12 CN CN2012200920081U patent/CN202520306U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536217A (en) * | 2012-03-12 | 2012-07-04 | 中天启明石油技术有限公司 | Positive pulse device for slurry under shaft |
| CN102536217B (en) * | 2012-03-12 | 2015-04-01 | 中天启明石油技术有限公司 | Positive pulse device for slurry under shaft |
| CN103925183A (en) * | 2014-04-22 | 2014-07-16 | 北京嘉禾汇拓石油技术有限公司 | Axial plunger pump for mud pulse generator |
| CN105626049A (en) * | 2016-03-28 | 2016-06-01 | 广东普洛测控科技有限公司 | Underground high-frequency pulse generator |
| CN105626049B (en) * | 2016-03-28 | 2019-11-15 | 广东普洛测控科技有限公司 | A kind of underground high frequency pulse generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |