CN201687391U - Underground water-hammer type pressure pulse generating tool - Google Patents
Underground water-hammer type pressure pulse generating tool Download PDFInfo
- Publication number
- CN201687391U CN201687391U CN2010201245840U CN201020124584U CN201687391U CN 201687391 U CN201687391 U CN 201687391U CN 2010201245840 U CN2010201245840 U CN 2010201245840U CN 201020124584 U CN201020124584 U CN 201020124584U CN 201687391 U CN201687391 U CN 201687391U
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- valve
- runner
- wheel assembly
- pressure pulse
- valve wheel
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Abstract
The utility model discloses an underground water-hammer type pressure pulse generating tool which comprises an external structure and an internal structure, wherein the external structure comprises an outer cylinder, an upper connector and a lower connector; the internal structure comprises a flow guide body, a valve wheel assembly, a normally open flow way, a spraying nozzle and two valve controlled flow ways; the flow guide body is arranged at the upper end of the valve wheel assembly; the valve wheel assembly is arranged at upper ends of the normally open flow way and the valve controlled flow ways; the valve controlled flow ways can be opened and closed periodically through the valve wheel assembly; the valve controlled flow ways are connected in parallel with the normally open flow way; and the spraying nozzle is arranged at the lower end of the normally open flow way. The tool can generate water-hammer type pressure pulses through the mode that a valve wheel rotates periodically to open and close the valve controlled flow ways.
Description
Technical field
The utility model relates to petroleum industry drilling technology field, specifically, is a kind of down-hole water attack formula pressure pulse generation instrument.
Background technology
The waterpower pulse drilling well is to utilize the waterpower pulse generating means that is installed in the shaft bottom to produce pressure pulse wave in the shaft bottom, and pressure pulse wave acts on the shaft bottom and helps removing the shaft bottom landwaste, forms the instantaneous negative pressure in shaft bottom, improves rate of penetration.The waterpower pulse generating means is divided into following two kinds on principle: hydraulic oscillation formula and throttle type.
Hydraulic oscillation formula pressure wave generator produces pressure vibration by the fluid oscillating chamber structure in the vibration chamber, after pressure vibration obtains amplifying in chamber, discharge by the outlet of hydraulic oscillation chamber, thereby form pressure fluctuation.From the principle that pressure vibration produces, pulsation and the association of fluid vortex structure that this hydraulic oscillation produces, the pressure oscillation frequency height that is produced, amplitude is little, decay is fast.
The throttle type pressure wave generator can produce pressure pulse by changing area of passage, and is simple and reliable for structure.But area of passage changes limited and is gradual, and does not have signal to amplify design, so hydrodynamic wave (H wave) amplitude and frequency characteristic that the throttling instrument produces are subjected to severely restricts, amplitude is also smaller, by having only several atmospheric pressure, acts on limited.
More than two kinds of waterpower pulse generating means because the restriction of hydrodynamic wave (H wave) occurring principle, on amplitude and frequency characteristic, limit to very greatly, do not obtain large-scale application.
Summary of the invention
The technical problems to be solved in the utility model is, a kind of down-hole water attack formula pressure pulse generation instrument is provided, and it can produce frequency adjustable by the periodic switch of valve control runner, the water attack formula pressure pulse wave that amplitude is higher, and then can improve bit speed.
The technical scheme of the utility model patent is as follows, a kind of down-hole water attack formula pressure pulse generation instrument, it is characterized in that, described device comprises external structure and internal construction, its external structure comprises an outer shell, a top connection, a lower contact, and its internal construction comprises that a baffle, valve wheel assembly, one often open runner, a nozzle, two valve control runners.Described baffle is arranged at valve wheel assembly upper end, and described valve wheel assembly is arranged at often to be opened on runner and the valve control runner, and described valve control runner is periodically switch setting by described valve wheel assembly, and valve control runner is with often to open runner in parallel.The utility model patent produces water attack formula pressure pulse wave by valve wheel periodic rotary on-off valve control runner.
The surge wave occurring principle is a kind of basic flow phenomenon of hydrodynamics, and fluid flows in runner, when the valve opening in the runner when closing, fluid velocity changes suddenly, will produce surge wave in the fluid so, other compression wave is greatly very many relatively for amplitude.
In Process of Oil Well Drilling, the drilling fluid on ground is to be transported on the drill bit in shaft bottom by the circular flow channel in the middle of drilling rod and the drill collar, and drilling fluid forms high-speed jet by bit port and is ejected on the bottom rock, is used for brokenly rock and bottom-hole cleaning landwaste.The described down-hole water attack of the utility model patent formula pressure pulse generation instrument is arranged between drill collar and the drill bit, and described top connection is connected with drill collar, and described lower contact is connected with drill bit.The drilling fluid on ground enters down-hole water attack formula pressure pulse generation instrument by described top connection like this, drilling fluid arrives described valve wheel assembly by described baffle acceleration shock, described valve wheel assembly periodic rotary on-off valve control runner, produce water attack formula pressure pulse wave, water attack formula pressure pulse wave acts on the bottom rock by bit port, improve the broken rock of jet and bring bottoms up effect, thereby improve the petroleum industry bit speed.
In preferred embodiment, described down-hole water attack formula pressure pulse generation instrument is characterized in that, described baffle has a runner that shrinks gradually, be used to make the fluid acceleration and fluid is guided into described valve wheel assembly, make fluid high-speed impact the valve wheel of described valve wheel assembly.
In preferred embodiment, described valve wheel assembly comprises a valve wheel and a valve seat, described valve wheel can be installed in the described valve seat rotationally, described valve wheel has a plurality of valve bodies, has the corresponding fluid passage of a plurality of and described valve body quantity in the described valve seat, described valve body can leave the ground block in the inlet of described fluid passage by the rotation of described valve wheel, and described fluid passage is connected with described valve control runner.
In Process of Oil Well Drilling, drilling fluid is after described baffle quickens, impact on the described valve wheel of described valve wheel assembly, described valve wheel is rotated under the impact of drilling fluid, in the process of rotation, the described valve body on the described valve wheel advance can periodically leave or the described valve seat of block in the fluid passage, thereby periodically control the switch of described valve control runner, the periodic switch of described valve control runner produces water attack formula pressure pulse.
In preferred embodiment, also be provided with an orifice union in the described outer shell, described orifice union is normally placed in the described runner bottom of often opening.
In the utility model patent tool work process, described valve control runner can produce periodic open and close, when described valve control runner is closed, drilling fluid can only pass through by the described runner of often opening, when described valve control runner is opened, valve control runner is with often to open runner in parallel, drilling fluid is divided into two strands from often opening runner and valve control runner passes through, in order to reduce from often opening the flow that runner passes through, increase the flow of valve control runner, need orifice union be set often opening the runner bottom so, can improve water attack formula compression wave amplitude like this.
In preferred embodiment, described down-hole water attack formula pressure pulse generation instrument is characterized in that described throttle part comprises at least one throttle nozzle.
Characteristics of the present utility model and advantage are:
1, after fluid quickened through the baffle contraction section, the valve wheel of high speed impact valve wheel assembly made the valve wheel produce rotation in valve seat.Valve wheel cooperates with valve seat, the formation periodic switch, and control valve control runner periodically opens and closes, and when valve control runner opens and closes suddenly, generation water attack formula pressure pulse.
2, the pulsed pressure wave of utilizing water attack formula principle to produce, amplitude is generally at the MPa order of magnitude, and amplitude and frequency can quantitatively be calculated and control.Relating to parameters such as this surge pressure wave-amplitude and jet size, annular space area of passage, fluid flow, fluid density by regulating above-mentioned parameter, can accurately be controlled the surge wave amplitude, the surge wave amplitude are controlled at the size that needs.The surge wave frequency is by the number decision of valve wheel speed and valve body.
3, based on the surge wave occurring principle, valve wheel rotary control valve control runner switch produces surge wave, and principle is reliable, and is simple in structure, and frequency and amplitude are adjustable, have more better than other vibration cementing instruments
Application prospect.Surge wave acts on the shaft bottom, helps removing the shaft bottom landwaste, improves rate of penetration, and drilling practice shows, can improve bit speed 10%-30%.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is generating means of the present utility model is in opening at its valve control runner a generalized section;
Figure 1A is the generalized section along the A-A line of Fig. 1;
Figure 1B is the generalized section along the B-B line of Fig. 1;
Fig. 1 C is the generalized section along the C-C line of Fig. 1;
Fig. 2 is generating means of the present utility model is in closed condition at its valve control runner a generalized section;
Fig. 2 A is the generalized section along the A-A line of Fig. 2;
Fig. 2 B is the generalized section along the B-B line of Fig. 2;
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Wherein, described herein " upper and lower " is to concern at position illustrated in figures 1 and 2.
Shown in Fig. 1, Figure 1A-1C, Fig. 2 and Fig. 2 A-2B, the down-hole water attack formula pressure pulse generation instrument that the utility model proposes, it comprises an outer shell 1, be provided with a baffle 2 in the outer shell, often open 3, two valve controls of runner runner 4 and 5, a valve wheel assembly 6, described valve wheel assembly 6 comprises valve wheel body 61 and valve seat 62, and valve wheel 6 can be installed in the described valve seat 62 rotationally, and valve control runner 4 and 5 is periodically switch setting by the valve wheel assembly; The upper end of outer shell 1 is connected with a top connection 7, and the lower end of outer shell 1 is connected with a lower contact 8.
The utility model is mounted in the lower end of drilling rod in use, the upper end of drill bit, in drilling process, down-hole water attack formula pressure pulse generation instrument is all in running order, drilling fluid enters through valve wheel 61 and often opens runner 3, valve wheel 61 is rotated under the water flow impact pressure effect, the rotation of valve wheel 61 can make valve control runner 4 and 5 be in the state that periodically opens or closes, so valve control runner 4 and 5 periodically produces water hammer, alternately produce water attack dilatational wave and water attack compressional wave, act on the shaft bottom, improve bit speed.
In concrete embodiment, valve wheel assembly 6 comprises 61 and valve seats 62 of a valve wheel, valve wheel 61 is installed in rotation in the valve seat 62, valve wheel 61 has multi-disc valve body (having four valve bodies herein), valve seat 62 both sides all have a plurality of and the corresponding fluid passage 63 of valve body quantity and 64, the fluid passage 63 or 64 of every side all is connected with the valve control runner 4 or 5 of a corresponding side, valve body can leave ground block going into day 63 and 64 in valve control runner 4 and 5 by the rotation of valve wheel 61, that is to say, because the rotation of valve wheel 61, the inlet 63 of fluid passage and 64 can be in by the state of valve body block, perhaps is in not by the state of valve body block.
When the valve body block of valve wheel 61 during in the inlet 63 of valve control runner 4 and 5 and 64, valve control runner 4 and 5 is closed (shown in Fig. 2 and Fig. 2 A), at valve control runner 4 and 5 turn-off transients, valve control runner 4 and 5 inner fluid speed moment stagnation, valve control runner upstream produces the water attack compressional wave, valve control runner downstream produces the water attack dilatational wave, and dissemination downwards is to the shaft bottom;
When the valve body of valve wheel 61 does not have block in the inlet 63 of valve control runner 4 and 5 and 64, valve control runner 4 and 5 be opened (shown in Fig. 1 and Figure 1A), valve control runner 4 and 5 recovers overcurrent, so can produce the water attack dilatational wave in the upstream of valve control runner 4 and 5, valve control downstream produces the water attack compressional wave, and the downward dissemination of water attack compressional wave is to the shaft bottom.
In preferred implementation, also be provided with a throttle nozzle 31 in the outer shell 1, throttle nozzle 31 is arranged at the bottom of often opening runner 3, is in over-current state with near the fluid maintaining valve wheel 61 always, thereby guarantees valve wheel 61 rotation continuously.In addition, by regulating the size of throttle nozzle 31, adjustable pressure wave amplitude.
The upper end of outer shell 1 is connected with a top connection 7, the lower end of outer shell 1 is connected with a lower contact 8, has the inner chamber 71 of a perforation in the top connection 7, and inner chamber 71 is communicated with outer shell 1 downwards, upwards be communicated with, can be connected by engage thread between top connection 7 and the cylinder body 1 with the drilling rod inner chamber.The inner chamber 81 that has a perforation in the lower contact 8, inner chamber 81 upwards is communicated with outer shell 1, is communicated with the drill bit inner chamber downwards, can be connected by engage thread between lower contact 8 and the drill bit.Replace water attack dilatational wave and the compressional wave that produces by valve wheel 61 periodic on-off valve control runners 4 and 5, be connected with the drill bit inner chamber downwards through outlet 81, and propagate to the shaft bottom, act on the bottom rock, to improve bit speed through bit port.
The utility model is applicable to conventional drilling, and drilling well of little gap and ultradeep well drilling process use extensively.Wherein, according to characteristics separately, but choose reasonable is often opened jet size, generates the surge wave of suitable amplitude, improves bit speed.Drilling practice shows, adopts the utility model bit speed can improve 10%-30%.
The above only is embodiment of the present utility model, and those skilled in the art can carry out various changes or modification to the utility model and do not break away from the spirit and scope of this practical utility model according to application documents are disclosed.
Claims (5)
1. down-hole water attack formula pressure pulse generation instrument, it is characterized in that, described device comprises external structure and internal construction, its external structure comprises an outer shell, a top connection, a lower contact, its internal construction comprises a baffle, a valve wheel assembly, often open runner for one, a nozzle, two valve control runners, described baffle is arranged at valve wheel assembly upper end, described valve wheel assembly is arranged at and often opens runner and valve control runner upper end, described valve control runner is periodically switch setting by described valve wheel assembly, valve control runner is with often to open runner in parallel, the utility model patent produces water attack formula pressure pulse wave by valve wheel periodic rotary on-off valve control runner.
2. down-hole water attack formula pressure pulse generation instrument according to claim 1, it is characterized in that, described baffle has a runner that shrinks gradually, is used to make the fluid acceleration and fluid is guided into described valve wheel assembly, makes fluid high-speed impact the valve wheel of described valve wheel assembly.
3. down-hole water attack formula pressure pulse generation instrument according to claim 1, it is characterized in that, described valve wheel assembly comprises valve wheel and valve seat, the valve wheel can be installed in the described valve seat rotationally, described valve wheel has a plurality of valve bodies, have the corresponding fluid passage of a plurality of and described valve body quantity in the described valve seat, described valve body can leave the ground block in the inlet of described fluid passage by the rotation of described valve wheel, and described fluid passage is connected respectively at described two valve control runners.
4. down-hole water attack formula pressure pulse generation instrument according to claim 1 is characterized in that the described runner bottom of often opening is provided with a throttle part.
5. down-hole water attack formula pressure pulse generation instrument according to claim 4 is characterized in that described throttle part comprises at least one throttle nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201245840U CN201687391U (en) | 2010-03-05 | 2010-03-05 | Underground water-hammer type pressure pulse generating tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201245840U CN201687391U (en) | 2010-03-05 | 2010-03-05 | Underground water-hammer type pressure pulse generating tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687391U true CN201687391U (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201245840U Expired - Fee Related CN201687391U (en) | 2010-03-05 | 2010-03-05 | Underground water-hammer type pressure pulse generating tool |
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| CN (1) | CN201687391U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936135A (en) * | 2010-03-05 | 2011-01-05 | 中国石油大学(北京) | Underground water-hammer type pressure pulse generating tool |
| CN104314484A (en) * | 2014-11-06 | 2015-01-28 | 中国石油大学(北京) | Circulating drilling fluid auxiliary pressurizer for multilateral well sidetracking |
| CN107762401A (en) * | 2017-10-23 | 2018-03-06 | 中石化石油机械股份有限公司研究院 | Square wave waterpower pulse work string tripping in instrument |
| CN112324340A (en) * | 2020-11-20 | 2021-02-05 | 中国石油集团渤海钻探工程有限公司 | Rotary wheel driving type pulse generator |
| CN112639250A (en) * | 2018-08-30 | 2021-04-09 | 贝克休斯控股有限责任公司 | Stator-free shear valve pulse generator |
-
2010
- 2010-03-05 CN CN2010201245840U patent/CN201687391U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936135A (en) * | 2010-03-05 | 2011-01-05 | 中国石油大学(北京) | Underground water-hammer type pressure pulse generating tool |
| CN104314484A (en) * | 2014-11-06 | 2015-01-28 | 中国石油大学(北京) | Circulating drilling fluid auxiliary pressurizer for multilateral well sidetracking |
| CN107762401A (en) * | 2017-10-23 | 2018-03-06 | 中石化石油机械股份有限公司研究院 | Square wave waterpower pulse work string tripping in instrument |
| CN107762401B (en) * | 2017-10-23 | 2019-06-04 | 中石化石油机械股份有限公司研究院 | Rectangular wave waterpower pulse work string tripping in tool |
| CN112639250A (en) * | 2018-08-30 | 2021-04-09 | 贝克休斯控股有限责任公司 | Stator-free shear valve pulse generator |
| CN112324340A (en) * | 2020-11-20 | 2021-02-05 | 中国石油集团渤海钻探工程有限公司 | Rotary wheel driving type pulse generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20101229 Termination date: 20120305 |