CN203248075U

CN203248075U - Downhole power pressurizing drilling tool

Info

Publication number: CN203248075U
Application number: CN 201320291147
Authority: CN
Inventors: 刘忠; 王志浩
Original assignee: China University of Petroleum Beijing
Current assignee: China University of Petroleum Beijing
Priority date: 2013-05-24
Filing date: 2013-05-24
Publication date: 2013-10-23
Anticipated expiration: 2023-05-24

Abstract

The utility model provides a downhole power pressurizing drilling tool which comprises a casing and an output shaft, wherein the upper end of the output shaft is connected with a driving component, and the lower part of the output shaft is connected with a drill bit pup joint and a drill bit; a drilling fluid overflowing channel is arranged between the output shaft and the casing; an accommodation space is formed on the drill bit; the overflowing channel is communicated with the accommodation space through an overflowing hole in the pup joint; the drill bit is provided with a first nozzle and a second nozzle; the second nozzle is communicated with the accommodation space; a central hole is formed in the output shaft from the bottom up; a plurality of radial holes communicated with the outer wall of the output shaft are formed in the upper end of the central hole; the bottom end of the central hole is communicated with the first nozzle; an axial plunger pump is arranged on the output shaft in a sleeving way; the fluid inlet of the axial plunger pump is communicated with the overflowing channel, and the fluid outlet of the axial plunge pump is communicated with the radial holes in the upper end of the central hole; pressurized fluid is ejected out from the first nozzle. According to the utility model, when the drilling fluid drives the drill bit to break rock, part of drilling fluid is pressurized by the axial plunger pump to perform high-pressure spraying to assist rock breaking, so as to realize mechanical and hydraulic combined rock breaking.

Description

Well dynamic supercharging drilling tool

Technical field

The utility model is about a kind of down-hole equipment, relates in particular to a kind of well dynamic supercharging drilling tool of realizing machinery and waterpower combined-breaking rock.

Background technology

Along with the increasing of petroleum exploration and development dynamics, the probing workload of the Holes of Complicated Wells such as deep-well, ultradeep well presents the trend that rises year by year.But, in deep-well, ultradeep well drilling process, having run into problems, deep-well, ultradeep well drilling well will drill many covers stratum, and the stratum of the chance of boring is ancient, fine and close, abrasiveness is strong, hardness is high, and bit speed is slow; Construction easily makes drilling tool cause heavy wear or damage for a long time, thereby accidents caused, needs new drilling technology badly and improves bit speed, shortens drilling period, improves exploration and development benefit.Mud motor and superhigh pressure jetting drilling technology combine, can fine addressing the above problem.

Use downhole motor drilling, the too much power attenuation of rotary drill column when having avoided rotary drilling alleviates drill string rotating simultaneously to the destruction of the borehole wall, reduce down-hole accident, and can significantly prolong Life of drill rod, the drilling rod accident that fractures be difficult for to occur, reduce drilling cost; With respect to rotary drilling, the downhole motor drilling drilling speed is very fast, especially in deep well section, can improve rotating speed in the impregnable situation of drill string limitation, increases interior drill bit of unit interval to the cutting number of times on stratum, improves drilling efficiency, shortens drilling period.Existing mud motor includes turbodrill and helicoid hydraulic motor etc.

Turbodrill is that a kind of hydraulic energy that drilling fluid is had converts the mechanical energy on the turbine wheel shaft to and driven the hydraulic of bit by turbine wheel shaft; As shown in Figure 6, existing typical turbodrill 8 includes housing 81, inner walls is provided with turbine stator 83, be provided with turbine wheel shaft 82 in the housing 81, turbine wheel shaft 82 is provided with the turbine rotor 84 that cooperates with turbine stator 83, are connected with reducer and are connected with output shaft 87 by shaft coupling 85 in turbine wheel shaft 82 bottoms, output shaft 87 bottoms are passed through rotating bit sub 88 and are connected with drill bit 89; Described drill bit 89 is provided with plain nozzle 891, axially is provided with the centre bore 871,881 of connection in output shaft 87 and the rotating bit sub 88, output shaft centre bore 871 upper ends connect the output shaft outer wall and with the conducting of drilling liquid flow circulation passage; Rotating bit sub centre bore 881 lower ends and plain nozzle 891 conductings; Its groundwork principle is, drilling fluid is input to turbodrill from the drilling rod (not shown), when drilling fluid when flowing between turbine stator and the turbine rotor, because the change of liquid flow path direction and speed, can produce thrust at turbine rotor, force the turbine rotor rotation, thereby drive turbine wheel shaft (main shaft) and bit, creep into realization; Simultaneously, drilling fluid by centre bore 871,881 and plain nozzle 891 flow out, at the bottom of the clear well, cutting carring.

As shown in Figure 7, existing helicoid hydraulic motor 9 includes housing 91, is provided with screw motor 92 in the housing 91, and screw motor 92 is connected with output shaft 94 by Hooks coupling universal coupling 93, and output shaft 94 bottoms are connected with drill bit 96 by rotating bit sub 95; Described drill bit 96 is provided with plain nozzle 961, axially is provided with the centre bore 941,951 of connection in output shaft 94 and the rotating bit sub 95, output shaft centre bore 941 upper ends connect the output shaft outer wall and with the conducting of drilling liquid flow circulation passage; Rotating bit sub centre bore 951 lower ends and plain nozzle 961 conductings; Its groundwork principle is that circulating fluid drive screw motor 92 rotates, and then drives bit, creeps into realization; Simultaneously, drilling fluid by centre bore 941,951 and plain nozzle 961 flow out, at the bottom of the clear well, cutting carring.

But, in the above-mentioned existing mud motor drilling fluid pressure drop larger, reduced the water horse power of drill bit, affected the shaft bottom and cleaned and the drill bit efficiency of breaking rock.For this reason, the new boring method of constantly exploratory development of oil expert of countries in the world.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 at present drilling fluid supercharging are ground supercharging and downhole pressure increasing.The ground supercharging mode need to utilize ground installation to produce cleaner for high-pressure drilling fluid, and is transported to the shaft bottom, and equipment performance is had relatively high expectations, and the aspect costs such as installation, dismounting, maintaining are large, can increase simultaneously unsafe factor, and drilling failure easily occurs.Downhole pressure increasing superhigh pressure water jet drilling technology does not need extra ground installation, is easy to the conventional drilling mode is turned to the superhigh pressure water jet drilling mode, better economy, safe and reliable, represented wide application prospect, represented the development trend of superhigh pressure water jet supercharging mode research.

Existing underground booster mainly contains: the jetting type underground booster, utilize the pressure reduction of drilling fluid that piston up-down is pressurizeed to drilling fluid; The cellular-type underground booster uses the fluid hydraulic transfering principle, utilizes the soft piston characteristic of barrier film that drilling fluid is pressurizeed; Centrifugal underground booster utilizes rotatablely moving of blade that drilling fluid is pressurizeed; Drill stem vibration damping formula underground booster utilizes drillstring vibrations, and piston up-down is pressurizeed to drilling fluid; The Well screw booster utilizes two tilting cylindrical cam grooves in the power conversion body that the reciprocating motion that rotatablely moving of swivel joint is converted to plunger is pressurizeed to drilling fluid; Hydraulic booster formula underground booster utilizes the effect of entrainmenting of fluid and incentive action to realize downhole pressure increasing; The bypass type underground booster, the loss flow that utilizes large tracts of land to push away small size increases stressed principle, realizes downhole pressure increasing by means of custom-designed controlling organization and commutation element.But above-mentioned most prior art does not adopt the well dynamic mode, just rely on drill string rotating to drive bit, and the effective pressurization time is shorter, and efficient is lower.

Thus, the inventor relies on experience and the practice of being engaged in for many years relevant industries, proposes a kind of well dynamic supercharging drilling tool, to overcome the defective of prior art.

The utility model content

The purpose of this utility model is to provide a kind of well dynamic supercharging drilling tool, with turbine or helicoid hydraulic motor and axial plunger pump combination, provide power by drilling fluid promotion turbine or screw rod, when driving the broken rock of bit, driving axial plunger displacement pump pressures partially drilling fluid, carry out the 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 well dynamic supercharging drilling tool, described drilling tool includes housing, be provided with output shaft in the housing, described output shaft upper end is connected with the top driver part by shaft coupling, output shaft bottom fixed cover is provided with drill bit pup joint, and drill bit pup joint is rotary seal with the housing bottom and is connected, and the drill bit pup joint bottom is fixedly connected with drill bit; Be provided with the drilling fluid flow channels between described output shaft and the housing, be axially arranged with flowing hole on the drill bit pup joint, described drill bit top is provided with accommodation space, and described flow channels is communicated with by flowing hole with accommodation space; The 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 the drill bit; Be provided with from bottom to top centre bore in the described output shaft, the centre bore upper end is provided with a plurality of radial holes with the conducting of output shaft outer wall; Described centre bore bottom is communicated with the first nozzle by the first jet orifice on the drill bit; Be positioned on the output shaft of housing and be arranged with an axial plunger pump, the inlet of described axial plunger pump is communicated with the drilling fluid flow channels, the radial hole conducting of the liquid outlet of axial plunger pump and centre bore upper end, the liquid after the supercharging is sequentially penetrated by the first nozzle by radial hole, centre bore and the first jet orifice.

In a better embodiment of the present utility model, described axial plunger pump comprises the cylinder body that is provided with a plurality of plunger holes, be slidingly equipped with plunger in the plunger hole, cylinder body is located on the output shaft by its central hole fixed cover, described cylinder body is plunger hole Open Side Down and arranges, the sealing of cylinder body top is provided with valve plate, and the inlet of described valve plate is communicated with the drilling fluid flow channels, the radial hole conducting of the liquid outlet of valve plate and output shaft centre bore upper end; Swash plate is positioned at the cylinder body below and is fixed on the housing; The swash plate upside is provided with crawler shoe and return plate, and the ball-shaped end of plunger is arranged in the groove of crawler shoe; On the output shaft between return plate and the cylinder body, be arranged with from bottom to top ball pivot, adjusting sleeve and spring, the ball pivot bottom is resisted against on the return plate; Described ball pivot is connected with the output axle key with adjusting sleeve, and the contact surface of ball pivot and return plate is the profile fitting face.

In a better embodiment of the present utility model, the groove of described crawler shoe is to having through hole; Be provided with lubrication oil in the seal cavity of swash plate top, lubrication oil enters in the groove of crawler shoe by described through hole.

In a better embodiment of the present utility model, described swash plate is fixedly installed in the sealing drum, and described cylinder body seal is pressed on the top of sealing drum, and described cylinder body is identical with the external diameter of sealing drum; Have annular space between described cylinder body and sealing drum and the inner walls, sealing drum top outer rim connects an annular solid that is fixedly connected with inner walls; Described annular solid is provided with the first open-work of a plurality of up/down perforations; On the sealing drum base abuts one clutch shaft bearing seat, this clutch shaft bearing seat is connected with output shaft by bearing; Be provided with the second open-work of a plurality of up/down perforations on this clutch shaft bearing seat corresponding to the position of annular space.

In a better embodiment of the present utility model, described drill bit pup joint is the two-part structure; The hypomere drill bit pup joint is ladder-type structure, is fixedly connected on output shaft by spline, and the outside of hypomere drill bit pup joint is rotary seal with the housing bottom and is connected; The epimere drill bit pup joint is sleeve type structure, and cannula tip is provided with flange, and sleeve pipe is fixedly connected with output shaft, and described clutch shaft bearing seat is connected with sleeve outer wall by bearing, and described flange is pressed on the upside of described bearing; Described epimere drill bit pup joint and hypomere drill bit pup joint are for being threaded.

In a better embodiment of the present utility model, the top sealing of described valve plate is installed with a flow guiding disc, described flow guiding disc is sheathed on the output shaft and static setting relative to valve plate by the flow guiding disc centre bore, and the position that described flow guiding disc centre bore is set in output shaft is positioned at the position of the radial hole of output shaft; The position relative with the liquid outlet of valve plate is provided with a sector grooves that is communicated with the flow guiding disc centre bore on the bottom surface of flow guiding disc; The position relative with the inlet of valve plate is provided with the deep-slotted chip breaker that a flow guiding disc outer rim is communicated with on the bottom surface of flow guiding disc; The outer end of described deep-slotted chip breaker is provided with screen pack.

In a better embodiment of the present utility model, the cylindrical sidewall of described valve plate and flow guiding disc is fixed on the inner walls, is provided with the 3rd open-work of a plurality of up/down perforations on the described valve plate corresponding to the position of annular space; Described flow guiding disc is provided with four open-work corresponding with a plurality of the 3rd open-works; The sidewall of one of them the 4th open-work and described deep-slotted chip breaker conducting; Be provided with screen pack at the hole wall with the 4th open-work of described deep-slotted chip breaker conducting.

In a better embodiment of the present utility model, described down-hole equipment is helicoid hydraulic motor, and described top driver part is screw motor.

In a better embodiment of the present utility model, described down-hole equipment is turbodrill, and described output shaft upper end is connected with turbine wheel shaft with reducer by shaft coupling, and turbine wheel shaft is provided with turbine rotor, is provided with the turbine stator corresponding with turbine rotor in the housing.

In a better embodiment of the present utility model, described reducer sealing is arranged in the speed reducer base; The outer rim of this speed reducer base is provided with a plurality of ducts with the conducting of described drilling fluid flow channels.

From the above mentioned, well dynamic supercharging drilling tool of the present utility model, output shaft drove drill bit and rotates broken rock by drill bit pup joint when, a part of drilling liquid flow sprayed in by second nozzle through flow channels, flowing hole, accommodation space and the second jet orifice, at the bottom of the clear well, cutting carring; Another part drilling fluid enters the pump housing from the inlet of axial plunger pump, liquid after the supercharging flows out from the liquid outlet of axial plunger pump, and order is penetrated by the first nozzle by radial hole, centre bore and the first jet orifice, carry out the waterpower auxiliary rock, realize thus the hydraulic combined-breaking rock, improve rate of penetration.

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:

Figure 1A: be the structural representation of the utility model well dynamic supercharging drilling tool one embodiment.

Figure 1B: be B-B place cross-sectional view among Figure 1A.

Fig. 1 C: be C-C place cross-sectional view among Figure 1A.

Fig. 1 D: be the local structure for amplifying schematic diagram in D place among Figure 1A.

Fig. 2: be the structural representation of another embodiment of the utility model well dynamic supercharging drilling tool.

Fig. 3 A: be the main TV structure schematic diagram of ball pivot in the utility model.

Fig. 3 B: be the schematic side view of Fig. 3 A.

Fig. 3 C: be the schematic top plan view of Fig. 3 A.

Fig. 4: be the structural representation of flow guiding disc in the utility model.

Fig. 5: be the structural representation of screen pack in the utility model.

Fig. 6: be the structural representation of existing turbodrill.

Fig. 7: be the structural representation of existing helicoid hydraulic motor.

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.

Shown in Figure 1A, the utility model proposes a kind of well dynamic supercharging drilling tool 100, described drilling tool includes housing 1, be provided with output shaft 2 in the housing 1, described output shaft 2 upper ends are connected with top driver part 7 by shaft coupling, output shaft 2 bottom fixed covers are provided with drill bit pup joint 3, and drill bit pup joint 3 is rotary seal with housing 1 bottom and is connected, and drill bit pup joint 3 bottoms are fixedly connected with drill bit 4; Be provided with drilling fluid flow channels I between described output shaft 2 and the housing 1, be axially arranged with flowing hole 33 on the drill bit pup joint 3, described drill bit 4 tops are provided with accommodation space 43, and described flow channels I is communicated with by flowing hole 33 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 the drill bit; Be provided with from bottom to top centre bore 21 in the described output shaft 2, centre bore 21 upper ends are provided with a plurality of radial holes 22 with output shaft 2 outer wall conductings; Described centre bore 21 bottoms are communicated with the first nozzle 41 by the first jet orifice 411 on the drill bit; Be positioned on the output shaft 2 of housing 1 and be arranged with an axial plunger pump 5, the inlet of described axial plunger pump 5 is communicated with drilling fluid flow channels I, radial hole 22 conductings of the liquid outlet of axial plunger pump 5 and centre bore 21 upper ends; In the present embodiment, described second nozzle 42 is common low-pressure nozzle, and the first nozzle 41 is the high-pressure spray nozzle.By said structure, when output shaft 2 drives drill bits 4 by drill bit pup joint 3 and rotates broken rock, a part of drilling liquid flow through flow channels I, flowing hole 33, accommodation space 43 and the second jet orifice 421 by second nozzle 42 in ejection, at the bottom of the clear well, cutting carring; Another part drilling fluid enters the pump housing from the inlet of axial plunger pump 5, liquid after the supercharging flows out from the liquid outlet of axial plunger pump 5, and order is penetrated by the first nozzle 41 by radial hole 22, centre bore 21 and the first jet orifice 411, carry out the waterpower auxiliary rock, realize thus the hydraulic combined-breaking rock, improve rate of penetration.

In the present embodiment, shown in Figure 1A, described down-hole equipment can be turbodrill, is connected with reducer and is connected with turbine wheel shaft 73 by shaft coupling 71 in described output shaft 2 upper ends, turbine wheel shaft 73 is provided with turbine rotor 731, is provided with the turbine stator 732 corresponding with turbine rotor 731 in the housing 1; Described reducer 72 sealings are arranged in the speed reducer base 721; The outer rim of this speed reducer base 721 is provided with a plurality of ducts 7211 with described drilling fluid flow channels I conducting.During drilling tool work, drilling fluid enters turbine stator 732, turbine stator 732 makes drilling fluid enter turbine rotor 731 by certain direction and speed, drive turbine rotor 731 rotations, change the liquid energy of drilling fluid into mechanical energy, make turbine wheel shaft 73 high speed rotating, change the motion of the high speed low torque of turbine wheel shaft 73 into the low speed and large torque motion through reducer 72, and pass to output shaft 2 and make the output shaft rotation; Output shaft 2 drives 5 pairs of part drilling fluids of axial plunger pump and pressurizes, and pressurized drilling fluid is by 41 ejections of the first nozzle; Simultaneously, 4 rotations of output shaft 2 driven rotary drill bit pup joints 3 and drill bit, the drilling fluid acting in conjunction of the drill bit 4 of rotation and 41 ejections of the first nozzle realizes the hydraulic combined-breaking rock, can the Effective Raise rate of penetration; Then process flow channels I, flowing hole 33, accommodation space 43 and the second jet orifice 421 are by ejection in the second nozzle 42 for not pressurized drilling fluid, and at the bottom of the clear well, cutting carring improves drilling efficiency thus.

Further, shown in Figure 1A, Fig. 1 D, in the present embodiment, described axial plunger pump 5 comprises the cylinder body 51 that is provided with a plurality of plunger holes 511, and (in the present embodiment, the plunger number is 7 to be slidingly equipped with plunger 52 in the plunger hole 511, also can be designed to 9,11 or 13 etc.), cylinder body 51 is located on the output shaft 2 by its central hole fixed cover, and described cylinder body 51 is plunger hole Open Side Down and arranges, and the sealing of cylinder body 51 tops is provided with valve plate 53; Stud with the anti-attrition cover between described valve plate and cylinder body; In order to alleviate the weight of plunger, plunger is hollow-core construction, and its hollow interior is filled with light plastic; As shown in Figure 1B, the inlet 531 of described valve plate 53 is communicated with drilling fluid flow channels I, the liquid outlet 532 of valve plate 53 and radial hole 22 conductings of output shaft centre bore 21 upper ends; Swash plate 55 is positioned at cylinder body 51 belows and is fixed on the housing 1; Swash plate 55 upsides are provided with crawler shoe 551 and return plate 552, and the ball-shaped end of plunger 52 is arranged in the groove of crawler shoe 551; On the output shaft 2 between return plate 552 and the cylinder body 51, be arranged with from bottom to top ball pivot 57, adjusting sleeve 571 and spring 572 (shown in Fig. 1 D), ball pivot 57 bottoms are resisted against on the return plate 552; Described ball pivot 57 is connected with adjusting sleeve with output shaft 2 for key is connected, and ball pivot 57 is the profile fitting face with the contact surface of return plate 552; In the present embodiment, shown in Fig. 3 A, Fig. 3 B and Fig. 3 C, be provided with protruding stupefied on the surface of ball pivot 57, contact surface at return plate 552 is provided with relative draw-in groove simultaneously, described protruding stupefied being fastened in the draw-in groove can drive return plate 552 by ball pivot 57 by output shaft 2 and rotate synchronously with cylinder body 51, thus, can prevent plunger when cylinder interior moves back and forth, plunger 52 and plunger hole 511 axis generation skewness; Certainly, also can be with protruding stupefied being arranged on the return plate, draw-in groove is arranged on the ball pivot, can realize equally the purpose of above-mentioned synchronous rotation.

In the present embodiment, shown in Fig. 1 D, the groove of described crawler shoe 551 is to having through hole 5511; Be provided with a certain amount of lubrication oil in the seal cavity of swash plate 55 tops, lubrication oil enters in the groove of crawler shoe 551 by described through hole 5511, can be lubricated crawler shoe, plunger etc.

Further, in the present embodiment, shown in Figure 1A, Fig. 1 D, described swash plate 55 is fixedly installed in the sealing drum 56, and described cylinder body 51 sealing pressings are located at the top of sealing drum 56, and described cylinder body 51 is identical with the external diameter of sealing drum 56; Have annular space O (this annular space O has consisted of the part of drilling fluid flow channels I) between described cylinder body 51 and sealing drum 56 and housing 1 inwall, sealing drum 56 top outer rims connect an annular solid 561 that is fixedly connected with housing 1 inwall; Described annular solid 561 corresponding described annular space O arrange, and annular solid 561 is provided with the first open-work 5611 of a plurality of up/down perforations; On the sealing drum 56 base abuts one clutch shaft bearing seat 562, the outside of clutch shaft bearing seat 562 is fixed in housing 1 inwall and is shored by the first adjustment barrel 591, and these clutch shaft bearing seat 562 inboard bearings 5622 that pass through are connected with output shaft 2; Be provided with the second open-work 5621 of a plurality of up/down perforations on this clutch shaft bearing seat 562 corresponding to the position of annular space O; In the present embodiment, be provided with the second adjustment barrel 592 between described clutch shaft bearing seat 562 and the annular solid 561.

In the present embodiment, shown in Figure 1A, Fig. 1 D, described drill bit pup joint 3 is the two-part structure; Hypomere drill bit pup joint 31 is ladder-type structure, be fixedly connected on output shaft 2 by spline, the outside of hypomere drill bit pup joint 31 is rotary seal with housing 1 bottom and is connected, and corresponding sealing surface adopts labyrinth ring and O shape circle combination sealing, and described flowing hole is arranged on this hypomere drill bit pup joint 31; Epimere drill bit pup joint 32 is sleeve type structure, and cannula tip is provided with flange 321, and sleeve pipe is fixedly connected with output shaft 2, and described clutch shaft bearing seat 562 is connected with sleeve outer wall by bearing, and described flange 321 is pressed on the upside of described bearing; Described epimere drill bit pup joint 32 and hypomere drill bit pup joint 31 are for being threaded.

In the present embodiment, shown in Fig. 1 C, Fig. 1 D, the sealing of described valve plate 53 tops is installed with a flow guiding disc 54, the diameter of described valve plate 53 and flow guiding disc 54 is greater than the diameter of cylinder body 51, the cylindrical sidewall of described valve plate 53 and flow guiding disc 54 is fixed on housing 1 inwall, is provided with the 3rd adjustment barrel 593 between valve plate 53 and the annular solid 561; Described flow guiding disc 54 be sheathed on the output shaft 2 by the flow guiding disc centre bore and with valve plate 53 relative static settings, the position that described flow guiding disc centre bore is set in output shaft 2 is positioned at the position of the radial hole 22 of output shaft, adopts the lip-type packing sealing between flow guiding disc and the output shaft; Shown in Figure 1B, Fig. 1 C and Fig. 1 D, be provided with the 3rd open-work 533 of a plurality of up/down perforations on the described valve plate 53 corresponding to the position of annular space O; Described flow guiding disc 54 is provided with four open-work 543 corresponding with a plurality of the 3rd open-works 533; Such as Fig. 1 C and shown in Figure 4, position relative with the liquid outlet 532 of valve plate 53 on the bottom surface of flow guiding disc 54 is provided with a sector grooves 541 that is communicated with the flow guiding disc centre bore, can make by sector grooves 541 and flow guiding disc centre bore thus radial hole 22 conductings of liquid outlet 532 with the output shaft of valve plate; Position relative with the inlet 531 of valve plate on the bottom surface of flow guiding disc 54 is provided with deep-slotted chip breaker 542; And the sidewall of above-mentioned the 4th open-work 543 one of them the 4th open-work and 542 conductings of described deep-slotted chip breaker; Be provided with screen pack 58 (as shown in Figure 5) at the hole wall with the 4th open-work 543 of described deep-slotted chip breaker 542 conductings.

Described screen pack 58 connects and composes by filtering reticulum 581 and screen pack body 582; As shown in Figure 5, filtering reticulum 581 is the plate body identical with deep-slotted chip breaker 542 shapes, described screen pack body 582 is cross section and described the 4th open-work 543 shapes cylindrical shell identical and up/down perforation, and the sidewall of cylindrical shell is provided with filtering material, and the sidewall of cylindrical shell is provided with a plurality of apertures 5821.Thus, the drilling fluid that do not contain solid particle or other impurity after the filtration is entered in the cylinder body of axial plunger pump through the inlet 531 of deep-slotted chip breaker 542 and valve plate, be sprayed by the first nozzle at last through pressurization; Behind the cylindrical shell of the drilling fluid that contains solid particle or other impurity by screen pack body 582, the 3rd open-work 533, be washed and enter among the drilling fluid flow channels I, flowed out by second nozzle 42 at last.

From the above mentioned, the well dynamic supercharging drilling tool in the present embodiment organically combines turbodrill and axial plunger pump, and a kind of new-type well dynamic supercharging drilling tool of hydraulic combined-breaking rock is provided; During this drilling tool work, drilling fluid enters turbine stator, turbine stator makes drilling fluid enter turbine rotor by certain direction and speed, the rotation of driving turbine rotor, change the liquid energy of drilling fluid into mechanical energy, make the turbine wheel shaft high speed rotating, change the motion of the high speed low torque of turbine wheel shaft into the low speed and large torque motion through reducer, and pass to output shaft and make the output shaft rotation; Output shaft drives cylinder body and the return plate rotation of axial plunger pump, cylinder body drives plunger and pumps at swash plate in rotation, the part drilling fluid is pressurizeed, the waterpower auxiliary rock is carried out in the first jet orifice and the ejection of the first nozzle of the radial hole of pressurized drilling fluid by valve plate liquid outlet, sector grooves, output shaft, centre bore, drill bit; Simultaneously, output shaft driven rotary drill bit pup joint and bit, the drilling fluid acting in conjunction of the drill bit of rotation and the first nozzle ejection realizes the hydraulic combined-breaking rock, Effective Raise rate of penetration; Then process flow channels, flowing hole, accommodation space and the second jet orifice are by spraying in the second nozzle for not pressurized drilling fluid, and at the bottom of the clear well, cutting carring improves drilling efficiency thus.

As another embodiment in the present embodiment, as shown in Figure 2, described down-hole equipment also can be helicoid hydraulic motor, and described top driver part 7 can be screw motor 74; The exportable low speed of screw motor rotor is high turns round motion, does not need reducer, only needs just can directly pass motion to output shaft 2 through Hooks coupling universal coupling 71; Other structures, principle, motion process and technique effect are identical with turbodrilling, do not repeat them here.

The above only is the schematic specific embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.

Claims

1. well dynamic supercharging drilling tool, described drilling tool includes housing, be provided with output shaft in the housing, described output shaft upper end is connected with the top driver part by shaft coupling, output shaft bottom fixed cover is provided with drill bit pup joint, drill bit pup joint is rotary seal with the housing bottom and is connected, and the drill bit pup joint bottom is fixedly connected with drill bit; It is characterized in that: be provided with the drilling fluid flow channels between described output shaft and the housing, be axially arranged with flowing hole on the drill bit pup joint, described drill bit top is provided with accommodation space, and described flow channels is communicated with by flowing hole with accommodation space; The 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 the drill bit; Be provided with from bottom to top centre bore in the described output shaft, the centre bore upper end is provided with a plurality of radial holes with the conducting of output shaft outer wall; Described centre bore bottom is communicated with the first nozzle by the first jet orifice on the drill bit; Be positioned on the output shaft of housing and be arranged with an axial plunger pump, the inlet of described axial plunger pump is communicated with the drilling fluid flow channels, the radial hole conducting of the liquid outlet of axial plunger pump and centre bore upper end, the liquid after the supercharging is sequentially penetrated by the first nozzle by radial hole, centre bore and the first jet orifice.

2. well dynamic supercharging drilling tool as claimed in claim 1, it is characterized in that: described axial plunger pump comprises the cylinder body that is provided with a plurality of plunger holes, be slidingly equipped with plunger in the plunger hole, cylinder body is located on the output shaft by its central hole fixed cover, described cylinder body is plunger hole Open Side Down and arranges, the sealing of cylinder body top is provided with valve plate, and the inlet of described valve plate is communicated with the drilling fluid flow channels, the radial hole conducting of the liquid outlet of valve plate and output shaft centre bore upper end; Swash plate is positioned at the cylinder body below and is fixed on the housing; The swash plate upside is provided with crawler shoe and return plate, and the ball-shaped end of plunger is arranged in the groove of crawler shoe; On the output shaft between return plate and the cylinder body, be arranged with from bottom to top ball pivot, adjusting sleeve and spring, the ball pivot bottom is resisted against on the return plate; Described ball pivot is connected with the output axle key with adjusting sleeve, and the contact surface of ball pivot and return plate is the profile fitting face.

3. well dynamic supercharging drilling tool as claimed in claim 2, it is characterized in that: the groove of described crawler shoe is to having through hole; Be provided with lubrication oil in the seal cavity of swash plate top, lubrication oil enters in the groove of crawler shoe by described through hole.

4. well dynamic supercharging drilling tool as claimed in claim 2, it is characterized in that: described swash plate is fixedly installed in the sealing drum, and described cylinder body seal is pressed on the top of sealing drum, and described cylinder body is identical with the external diameter of sealing drum; Have annular space between described cylinder body and sealing drum and the inner walls, sealing drum top outer rim connects an annular solid that is fixedly connected with inner walls; Described annular solid is provided with the first open-work of a plurality of up/down perforations; On the sealing drum base abuts one clutch shaft bearing seat, this clutch shaft bearing seat is connected with output shaft by bearing; Be provided with the second open-work of a plurality of up/down perforations on this clutch shaft bearing seat corresponding to the position of annular space.

5. well dynamic supercharging drilling tool as claimed in claim 4, it is characterized in that: described drill bit pup joint is the two-part structure; The hypomere drill bit pup joint is ladder-type structure, is fixedly connected on output shaft by spline, and the outside of hypomere drill bit pup joint is rotary seal with the housing bottom and is connected; The epimere drill bit pup joint is sleeve type structure, and cannula tip is provided with flange, and sleeve pipe is fixedly connected with output shaft, and described clutch shaft bearing seat is connected with sleeve outer wall by bearing, and described flange is pressed on the upside of described bearing; Described epimere drill bit pup joint and hypomere drill bit pup joint are for being threaded.

6. well dynamic supercharging drilling tool as claimed in claim 4, it is characterized in that: the top sealing of described valve plate is installed with a flow guiding disc, described flow guiding disc is sheathed on the output shaft and static setting relative to valve plate by the flow guiding disc centre bore, and the position that described flow guiding disc centre bore is set in output shaft is positioned at the position of the radial hole of output shaft; The position relative with the liquid outlet of valve plate is provided with a sector grooves that is communicated with the flow guiding disc centre bore on the bottom surface of flow guiding disc; The position relative with the inlet of valve plate is provided with the deep-slotted chip breaker that a flow guiding disc outer rim is communicated with on the bottom surface of flow guiding disc; The outer end of described deep-slotted chip breaker is provided with screen pack.

7. well dynamic supercharging drilling tool as claimed in claim 6, it is characterized in that: the cylindrical sidewall of described valve plate and flow guiding disc is fixed on the inner walls, is provided with the 3rd open-work of a plurality of up/down perforations on the described valve plate corresponding to the position of annular space; Described flow guiding disc is provided with four open-work corresponding with a plurality of the 3rd open-works; The sidewall of one of them the 4th open-work and described deep-slotted chip breaker conducting; Be provided with screen pack at the hole wall with the 4th open-work of described deep-slotted chip breaker conducting.

8. 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.

9. well dynamic supercharging drilling tool as claimed in claim 1, it is characterized in that: described down-hole equipment is turbodrill, described output shaft upper end is connected with turbine wheel shaft with reducer by shaft coupling, and turbine wheel shaft is provided with turbine rotor, is provided with the turbine stator corresponding with turbine rotor in the housing.

10. well dynamic supercharging drilling tool as claimed in claim 9 is characterized in that: described reducer sealing is arranged in the speed reducer base; The outer rim of this speed reducer base is provided with a plurality of ducts with the conducting of described drilling fluid flow channels.