CN203655160U - Mixed-flow type underground power pressurizing drilling tool - Google Patents
Mixed-flow type underground power pressurizing drilling tool Download PDFInfo
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- CN203655160U CN203655160U CN201420023510.6U CN201420023510U CN203655160U CN 203655160 U CN203655160 U CN 203655160U CN 201420023510 U CN201420023510 U CN 201420023510U CN 203655160 U CN203655160 U CN 203655160U
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Abstract
The utility model provides a mixed-flow type underground power pressurizing drilling tool. The mixed-flow type underground power pressurizing drilling tool comprises a housing and an output shaft; the upper end of the output shaft is connected with a driving part; the lower portion of the output shaft is connected with a drill bit; two drilling liquid overflow channels are formed between the output shaft and the housing and in the lower portion of the output shaft respectively; the drilling liquid overflow channel which is formed in the lower portion of the output shaft is communicated with an accommodating space formed in the drill bit; the drill bit is provided with a first nozzle and a second nozzle; the second nozzle is communicated with the accommodating space; a center hole is formed in the output shaft from bottom to top; the upper end of the center hole is provided with an overflow hole which is communicated with the outer wall of the output shaft; a high pressure alloy steel pipe is connected between the lower portion of the output shaft and the drill bit; a drilling liquid high pressure flow channel is formed in the high pressure alloy steel pipe from bottom to top; the bottom end of the center hole is communicated with the first nozzle through the drilling liquid high pressure flow channel which is formed in the high pressure alloy steel pipe and a first jet hole; a mixed-flow pump is arranged on the output shaft in a sleeving mode; the liquid inlet position of the mixed-flow pump is communicated with the overflow channel formed between the output shaft and the housing; the liquid outlet position of the mixed-flow pump is communicated with the overflow hole formed at the upper end of the center hole; the pressurized liquid is jetted through the first nozzle. According to the mixed-flow type underground power pressurizing drilling tool, rock breaking of the drill bit is driven by the drilling liquid, meanwhile part of the drilling liquid is pressurized through the mixed-flow pump for high pressure jet auxiliary rock breaking, and accordingly the mechanical and hydraulic combined rock breaking can be achieved.
Description
Technical field
The utility model is about a kind of down-hole equipment, relates in particular to a kind of mixed-flow well dynamic supercharging drilling tool of realizing machinery and waterpower combined-breaking rock.
Background technology
In recent years, Shallow Oil-Gas resources exploration degree is more and more higher, causes residue shallow-layer resource fewer and feweri, and this has just caused deep-well, ultradeep well probing workload to rise year by year.But deep-well, ultradeep well bit speed are slow, and easily make drilling tool cause heavy wear or damage, thereby accidents caused, need new drilling technology badly and improve bit speed, shorten drilling period, improve exploration and development benefit.Experiment and research shows, mud motor and superhigh pressure jetting drilling technology combine, can fine addressing the above problem.
Use downhole motor drilling, avoid too much power attenuation, alleviated the destruction of drill string rotating to the borehole wall simultaneously, reduced down-hole accident, and can significantly extend Life of drill rod, be difficult for the drilling rod accident that fractures occurs, in deep well section, can be in the impregnable situation of drill string limitation, improve drilling speed, increase the cutting number of times of drill bit to stratum in the unit interval, improve drilling efficiency, shorten drilling period.
As shown in Figure 3, existing helicoid hydraulic motor 7 includes housing 71, is provided with screw motor 72 in housing 71, and screw motor 72 is connected with output shaft 74 by Hooks coupling universal coupling 73, and output shaft 74 bottoms are connected with drill bit 75; Described drill bit 75 is provided with plain nozzle 751, is axially arranged with the centre bore 741,742 of connection in output shaft 74, output shaft centre bore 741 upper ends connect output shaft outer walls and with the conducting of drilling liquid flow circulation passage; Output shaft centre bore 742 lower ends and plain nozzle 751 conductings; Its groundwork principle is that circulating fluid drive screw motor 72 rotates, and then drives bit, creeps into realize; Meanwhile, drilling fluid flows out by centre bore 741,742 and plain nozzle 751, at the bottom of clear well, and cutting carring.
But, in turbodrill drilling fluid pressure drop larger, reduced the water horse power of drill bit, affected shaft bottom and cleaned and drill bit efficiency of breaking rock, research and field trial show, mechanical rock breaking cooperation superhigh pressure jetting drilling technology can increase substantially bit speed.
The key of superhigh pressure jetting drilling technology is supercharging mode and the super-pressure drilling fluid mode of movement of drilling fluid.Two kinds of major ways of drilling fluid supercharging are at present ground supercharging and downhole pressure increasing.Ground supercharging mode need to utilize ground installation to produce cleaner for high-pressure drilling fluid, and is transported to shaft bottom, and equipment performance is had relatively high expectations, and the aspect costs such as installation, dismounting, maintaining are large, can increase unsafe factor simultaneously, and drilling failure easily occurs.Downhole pressure increasing superhigh pressure water jet drilling technology, does not need extra ground installation, is easy to conventional drilling mode to turn to superhigh pressure water jet drilling mode, better economy, safe and reliable, represent wide application prospect, represent the development trend of superhigh pressure water jet supercharging mode research.
Existing underground booster mainly contains: centrifugal underground booster, utilizes centrifugal pump to pressurize to drilling fluid; Cellular-type underground booster, uses fluid hydraulic transfering principle, utilizes the soft piston characteristic of barrier film to pressurize to drilling fluid; Hydraulic booster formula underground booster, utilizes the effect of entrainmenting and the incentive action of fluid to realize supercharging; Bypass type underground booster, utilizing large area to push away small size increases pressure; Jetting type underground booster, utilizes pressure reduction that piston up-down is pressurizeed to drilling fluid; Drill stem vibration damping formula underground booster, utilizes drillstring vibrations, and piston up-down is pressurizeed to drilling fluid; Well screw booster, the reciprocating motion that utilizes power conversion body that rotatablely moving of swivel joint is converted to plunger is pressurizeed to drilling fluid.But above-mentioned most prior art just relies on drill string rotating to drive bit, Life of drill rod is low, and down-hole accident easily occurs, and the effective pressurization time is shorter, and efficiency is lower.
Thus, the inventor relies on experience and the practice of being engaged in for many years relevant industries, proposes a kind of mixed-flow well dynamic supercharging drilling tool, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of mixed-flow well dynamic supercharging drilling tool, helicoid hydraulic motor and mixed-flow pump are organically combined, provide power by drilling fluid lead-screw, in driving the broken rock of bit, drive mixed-flow pump pressures partially drilling fluid, carry out high-pressure spray auxiliary rock, realize machinery and waterpower combined-breaking rock, to improve drilling efficiency.
The purpose of this utility model is to realize like this, a kind of mixed-flow well dynamic supercharging drilling tool, described drilling tool includes housing, is provided with output shaft in housing, described output shaft upper end is connected with top driver part by shaft coupling, and output shaft bottom fixed cover is provided with drill bit; Between described output shaft and housing, be provided with drilling fluid flow channels in output shaft bottom, output shaft bottom drilling fluid flow channels is communicated with the accommodation space that drill bit top is provided with; Drill bit bottom is provided with the first nozzle and second nozzle, and described second nozzle is communicated with accommodation space by the second jet orifice on drill bit; In described output shaft, be provided with from bottom to top centre bore, centre bore upper end is provided with the multiple flowing holes with the conducting of output shaft outer wall, is connected with high pressure alloy pipe between output shaft bottom and drill bit, is provided with from bottom to top drilling fluid high pressure runner in high pressure alloy pipe; Described centre bore bottom is communicated with the first nozzle by the first jet orifice on drilling fluid high pressure runner, drill bit in high pressure alloy pipe; Be positioned on the output shaft of housing and be arranged with a mixed-flow pump, the feed liquor place of described mixed-flow pump is communicated with drilling fluid flow channels, the fluid place of mixed-flow pump and the flowing hole conducting of centre bore upper end, the liquid order after supercharging is penetrated by the first nozzle by drilling fluid high pressure runner and the first jet orifice in flowing hole, centre bore, high pressure alloy pipe.
In a preferred embodiments of the present utility model, described mixed-flow pump comprises and is provided with multiple impellers, impeller fixed cover is located on output shaft, by vane rotary, thereby liquid effects centrifugal force and end thrust are pressurizeed to part drilling fluid, impeller feed liquor place is communicated with drilling fluid flow channels, the flowing hole conducting of the fluid place of impeller and output shaft centre bore upper end.
In a preferred embodiments of the present utility model, described down-hole equipment is helicoid hydraulic motor, described top driver part is screw motor, when drilling fluid enters motor through bypass valve, form certain pressure differential at the import and export of motor, promote the axis rotation of motor rotor around motor stator, and rotating speed and moment of torsion are passed to output shaft by universal drive shaft shaft coupling, output shaft drives bit ground to drive mixed-flow pump impeller rotation simultaneously, and part drilling fluid is pressurizeed.
From the above mentioned, mixed-flow well dynamic supercharging drilling tool of the present utility model, when output shaft drives drill bit to rotate broken rock, a part of drilling liquid flow sprays in by second nozzle through flow channels, flowing hole, accommodation space and the second jet orifice, at the bottom of clear well, cutting carring; Another part drilling fluid enters the pump housing from the feed liquor of mixed-flow pump, liquid after supercharging flows out from the fluid of mixed-flow pump, and order is penetrated by the first nozzle by drilling fluid high pressure runner and the first jet orifice in flowing hole, centre bore, high pressure alloy pipe, carry out waterpower auxiliary rock, realize thus hydraulic combined-breaking rock, improve rate of penetration.
Brief description of the drawings
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein:
Figure 1A: be the structural representation of the utility model mixed-flow well dynamic supercharging drilling tool one embodiment.
Figure 1B: be B-B place cross-sectional view in Figure 1A.
Fig. 2: be the structural representation of mixed-flow pump impeller in the utility model.
Fig. 3: be the structural representation of existing helicoid hydraulic motor.
Detailed description of the invention
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast brief description of the drawings detailed description of the invention of the present utility model.
As shown in Figure 1A, the utility model proposes a kind of mixed-flow well dynamic supercharging drilling tool 100, described drilling tool includes housing 1, in housing 1, be provided with output shaft 2, described output shaft 2 upper ends are connected with the screw motor rotor 64 in top driver part 6 by Hooks coupling universal coupling 61, and output shaft 2 bottom fixed covers are provided with drill bit 4; Between described output shaft 2 and housing 1, be provided with drilling fluid flow channels I, output shaft is provided with drilling fluid flow channels 32 in 2 bottoms, output shaft 2 is provided with flowing hole 23, and described drill bit 4 tops are provided with accommodation space 43, and described flow channels I is communicated with by flowing hole 23 with accommodation space 43; Drill bit 4 bottoms are provided with the first nozzle 41 and second nozzle 42, and described second nozzle 42 is communicated with accommodation space 43 by the second jet orifice 421 on drill bit; In described output shaft 2, be provided with from bottom to top centre bore 22, centre bore 22 upper ends are provided with the multiple flowing holes 21 with output shaft 2 outer wall conductings; Between output shaft 2 bottoms and drill bit 4, be connected with high pressure alloy pipe 3, in high pressure alloy pipe 3, be provided with from bottom to top drilling fluid high pressure runner 31; Described centre bore 22 bottoms are communicated with the first nozzle 41 by the first jet orifice 411 on drilling fluid high pressure runner 31, drill bit; Be positioned on the output shaft 2 of housing 1 and be arranged with a mixed-flow pump 5, the feed liquor place of described mixed-flow pump 5 is communicated with drilling fluid flow channels I, flowing hole 21 conductings of the fluid place of mixed-flow pump 5 and centre bore 22 upper ends; In the present embodiment, described second nozzle 42 is common low-pressure nozzle, and the first nozzle 41 is high-pressure spray nozzle.By said structure, when output shaft 2 drives drill bit 4 to rotate broken rock, a part of drilling liquid flow through flow channels I, flowing hole 23, accommodation space 43 and the second jet orifice 421 by second nozzle 42 in ejection, at the bottom of clear well, cutting carring; Another part drilling fluid enters the pump housing from the feed liquor of mixed-flow pump 5, liquid after supercharging flows out from the fluid of mixed-flow pump 5, and order is penetrated by the first nozzle 41 by flowing hole 21, centre bore 22, drilling fluid high pressure runner 31 and the first jet orifice 411, carry out waterpower auxiliary rock, realize thus hydraulic combined-breaking rock, improve rate of penetration.
In the present embodiment, as shown in Figure 1A, described down-hole equipment is helicoid hydraulic motor, and described output shaft 2 is provided with radial-thrust bearing 62, and radial-thrust bearing 62 outer rims are provided with the multiple ducts 621 with described drilling fluid flow channels I conducting.When drilling fluid enters motor through bypass valve 66, form certain pressure differential at the import and export of motor, promote the axis rotation of motor rotor 64 around stator 65, and rotating speed and moment of torsion are passed through to universal drive shaft shaft coupling 61 and output shaft 2.Output shaft 2 drives mixed-flow pump 5 to pressurize to part drilling fluid, and pressurized drilling fluid sprays by the first nozzle 41; Meanwhile, output shaft 2 drives drill bit 4 to rotate, and the drilling fluid acting in conjunction that the drill bit 4 of rotation and the first nozzle 41 spray, realizes hydraulic combined-breaking rock, can effectively improve rate of penetration; Process flow channels I, flowing hole 23, accommodation space 43 and the second jet orifice 421 are by ejection in second nozzle 42 for not pressurized drilling fluid, and at the bottom of clear well, cutting carring, improves drilling efficiency thus.
Further, as Fig. 2, in the present embodiment, described mixed-flow pump 5 comprises and is provided with many top impeller 52 and bottom impeller 55, in the time of vane rotary, liquid effects is had to centrifugal force and end thrust, change mechanical energy into part drilling fluid kinetic energy, part drilling fluid is pressurizeed.
Further, in the present embodiment, described mixed-flow pump upper blade 52 and lower blade 55 be located at mixed-flow pump 5 pump barrels 54 in; Between described pump barrel 54 and housing 1 inwall, there is annular space 0 (this annular space 0 has formed a part of drilling fluid flow channels I); Pump barrel 54 tops, middle part outer rim connect respectively the annular solid 51,53 being fixedly connected with housing 1 inwall; The corresponding described annular space 0 of described annular solid 51,53 arranges, and is respectively equipped with the first open-work 511,531 of multiple up/down perforations on annular solid 51,53; In the present embodiment, between described annular solid 51 and annular solid 53, be provided with the second adjustment barrel 56.
From the above mentioned, the mixed-flow well dynamic supercharging drilling tool in present embodiment organically combines helicoid hydraulic motor and mixed-flow pump, and a kind of new-type well dynamic supercharging drilling tool of hydraulic combined-breaking rock is provided; When this drilling tool work, when drilling fluid enters motor through bypass valve, form certain pressure differential at the import and export of motor, promote the axis rotation of motor rotor around motor stator, and rotating speed and moment of torsion are passed to output shaft by universal drive shaft shaft coupling; Output shaft drives the vane rotary of mixed-flow pump, part drilling fluid is pressurizeed, in the flowing hole of pressurized drilling fluid by output shaft, centre bore, high pressure alloy pipe, the first jet orifice and the ejection of the first nozzle of drilling fluid high pressure runner, drill bit, carry out waterpower auxiliary rock; Meanwhile, output shaft drives bit, and the drilling fluid acting in conjunction of the drill bit of rotation and the ejection of the first nozzle, realizes hydraulic combined-breaking rock, has effectively improved rate of penetration; Process flow channels, flowing hole, accommodation space and the second jet orifice are by spraying in second nozzle for not pressurized drilling fluid, and at the bottom of clear well, cutting carring, improves drilling efficiency thus.
The foregoing is only the schematic detailed description of the invention of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the amendment under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.
Claims (3)
1. a mixed-flow well dynamic supercharging drilling tool, described drilling tool includes housing, is provided with output shaft in housing, and described output shaft upper end is connected with top driver part by shaft coupling, and output shaft bottom fixed cover is provided with drill bit; It is characterized in that: between described output shaft and housing, be provided with drilling fluid flow channels in output shaft bottom, output shaft bottom drilling fluid flow channels is communicated with the accommodation space that drill bit top is provided with; Drill bit bottom is provided with the first nozzle and second nozzle, and described second nozzle is communicated with accommodation space by the second jet orifice on drill bit; In described output shaft, be provided with from bottom to top centre bore, centre bore upper end is provided with the multiple flowing holes with the conducting of output shaft outer wall, is connected with high pressure alloy pipe between output shaft bottom and drill bit, is provided with from bottom to top drilling fluid high pressure runner in high pressure alloy pipe; Described centre bore bottom is communicated with the first nozzle by drilling fluid high pressure runner, the first jet orifice in high pressure alloy pipe; Be positioned on the output shaft of housing and be arranged with a mixed-flow pump, the feed liquor place of described mixed-flow pump is communicated with drilling fluid flow channels, the fluid place of mixed-flow pump and the flowing hole conducting of centre bore upper end, the liquid order after supercharging is penetrated by the first nozzle by drilling fluid high pressure runner and the first jet orifice in flowing hole, centre bore, high pressure alloy pipe.
2. mixed-flow well dynamic supercharging drilling tool as claimed in claim 1, it is characterized in that: described mixed-flow pump comprises and is provided with multiple impellers, impeller fixed cover is located on output shaft, by vane rotary, thereby liquid effects centrifugal force and end thrust are pressurizeed to part drilling fluid, impeller feed liquor place is communicated with drilling fluid flow channels, the flowing hole conducting of the fluid place of impeller and output shaft centre bore upper end.
3. mixed-flow well dynamic supercharging drilling tool as claimed in claim 1, it is characterized in that: described down-hole equipment is helicoid hydraulic motor, described top driver part is screw motor, when drilling fluid enters motor through bypass valve, form certain pressure differential at the import and export of motor, promote the axis rotation of motor rotor around motor stator, and rotating speed and moment of torsion are passed to output shaft by Hooks coupling universal coupling, output shaft drives bit ground to drive mixed-flow pump impeller rotation simultaneously, and part drilling fluid is pressurizeed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023510.6U CN203655160U (en) | 2014-01-15 | 2014-01-15 | Mixed-flow type underground power pressurizing drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023510.6U CN203655160U (en) | 2014-01-15 | 2014-01-15 | Mixed-flow type underground power pressurizing drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655160U true CN203655160U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420023510.6U Expired - Fee Related CN203655160U (en) | 2014-01-15 | 2014-01-15 | Mixed-flow type underground power pressurizing drilling tool |
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| Country | Link |
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| CN (1) | CN203655160U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401378A (en) * | 2017-09-20 | 2017-11-28 | 中国石油大学(北京) | Drill bit |
| CN114704196A (en) * | 2022-05-07 | 2022-07-05 | 中国地质大学（北京） | Overload protection forced rotary vane downhole motor |
-
2014
- 2014-01-15 CN CN201420023510.6U patent/CN203655160U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401378A (en) * | 2017-09-20 | 2017-11-28 | 中国石油大学(北京) | Drill bit |
| CN107401378B (en) * | 2017-09-20 | 2023-10-27 | 中国石油大学(北京) | Drill bit |
| CN114704196A (en) * | 2022-05-07 | 2022-07-05 | 中国地质大学（北京） | Overload protection forced rotary vane downhole motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Zhong Inventor after: Wang Zhihao Inventor before: Wang Zhihao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG ZHIHAO TO: LIU ZHONG WANG ZHIHAO |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20170115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |