CN205477370U

CN205477370U - It is directional with reaming hole screw rod drilling tool

Info

Publication number: CN205477370U
Application number: CN201620066547.6U
Authority: CN
Inventors: 岳林; 朱杰; 于广海
Original assignee: DEZHOU UNITED PETROLEUM MACHINERY Co Ltd
Current assignee: DEZHOU UNITED PETROLEUM MACHINERY Co Ltd
Priority date: 2016-01-23
Filing date: 2016-01-23
Publication date: 2016-08-17
Anticipated expiration: 2026-01-23

Abstract

The utility model discloses an it is directional with reaming hole screw rod drilling tool, include: the rotor, and a housing. The centralizer sets up on the shell, has the first guide hole of a plurality of radial settings to and set up the first piston at first guide hole, wherein a hinge joint sets upright or straight the piece, the reaming hole sword sets up at the rotor head end, has the second guide hole of a plurality of radial settings to and set up the second piston at the second guide hole, wherein the 2nd hinge joint has the cutting wing, wherein, the hole of the rotor section at centralizer and reaming hole sword place is the mud hole, and mud hole and first guide hole and second guide hole intercommunication are passed through to sealed chamber. The foundation the utility model discloses a screw rod drilling tool has the good adaptability of rightting.

Description

A kind of orientation uses reaming hole helicoid hydraulic motor

Technical field

This utility model relates to a kind of orientation reaming hole helicoid hydraulic motor, a kind of helicoid hydraulic motor that can realize well expansion in orientation process.

Background technology

Along with petroleum exploration and development technology, the development of drilling technology, the drilling technology such as directional well, cluster well, horizontal well is increasingly widely applied.

During current petroleum drilling and mining, because helicoid hydraulic motor has stronger deflecting ability and relatively wide build angle rate scope so that helicoid hydraulic motor is widely used during positioning operation.In orientation process, the curved housing bent angle direction of helicoid hydraulic motor cannot change, and the motor of helicoid hydraulic motor is the most just to provide the unique channel of drill bit power, and when rotating disk starts, this directional effect of helicoid hydraulic motor just disappears.

Existing hole reaming tool has mechanical, there is fluid pressure type, but the power resources of this kind of hole reaming tool both are from rotating, in the rotating disk of favourable turn, the moment of torsion passed out, it is constantly occurring change, so the hole reaming tool on market cannot realize orientating function owing to bent angle direction can rotate with rotating disk.

Helicoid hydraulic motor drives bit in drilling process, get out borehole diameter to be determined by bit diameter size, assume helicoid hydraulic motor and hole reaming tool to be applied in combination (whether can be applied in combination and the most not be verified), i.e. band hole reaming tool rotary drilling simultaneously reaches reaming hole purpose, but now the centralizer on helicoid hydraulic motor housing does not just have the effect of the righting borehole wall along with the expansion of well, so have a strong impact on build angle rate, it is impossible to reach directional inclination.

Additionally, helicoid hydraulic motor is in use, inevitably running into easily contracting stratum, such as Gypsum Fibrosum stratum, extruded by easily contracting stratum, the directional drilling of helicoid hydraulic motor and drilling tool make a trip and are very restricted.

Chinese patent literature CN104948122A discloses a kind of ball type centralizer for helicoid hydraulic motor, it includes body and ball, wherein body is bead type structure, for stationary structure, the body of its stationary structure determines its use and can be very restricted, such as will not become big along with reaming hole, thus righting effect cannot be played.

Utility model content

Therefore, the purpose of this utility model is that providing a kind of has the orientation reaming hole helicoid hydraulic motor of righting adaptability based on slurry transportation pressure.

This utility model is by the following technical solutions:

A kind of orientation uses reaming hole helicoid hydraulic motor, including:

Rotor, this rotor is the screw rod with multi-head spiral；

Shell, is sleeved on rotor formation and forms multiple annular seal space for slurry conveyed based on described multi-head spiral between stator, and rotor；

Centralizer, is arranged on shell, has multiple the first guide hole being radially arranged, and is arranged on the first piston of the first guide hole, and wherein first piston connects wiper block；

Reaming hole cutter, is arranged on rotor head end, has multiple the second guide hole being radially arranged, and is arranged on the second piston of the second guide hole, and wherein the second piston connects cutting wing；

Wherein, the endoporus of the rotor section at centralizer and reaming hole cutter place is mud hole, and annular seal space is connected with the first guide hole and the second guide hole by mud hole.

Above-mentioned orientation reaming hole helicoid hydraulic motor, alternatively, include with the hydraulic channel of the second guide hole and the Part I of the second guide hole coaxial line and parallel with Part I and be arranged on the Part III connected on rear side of reaming hole cutter with mud hole for connecting mud hole, and the Part II at rotor axial connection Part I with Part III.

Preferably, the length of Part II is 10:1～16:1 with the draw ratio of mud bore dia.

Preferably, the two ends of described wiper block two ends and cutting wing are equipped with chamfering.

In certain embodiments, in the first guide hole, it is provided with the resetting means resetted for wiper block, is provided with in the second guide hole for cutting the resetting means that wing resets.

In further embodiments, described first guide hole and the second guide hole are circular hole, and correspondingly, first piston and the second piston are circular piston；

Wiper block is the bar blocks arranged along rotor axial, correspondingly, is provided with the first bar shaped guide hole guiding wiper block on shell, and the resetting means resetted for wiper block is arranged in the first bar shaped guide hole；

Cutting wing be along rotor axial arrange bar shaped cutting wing, correspondingly, rotor is provided with to cutting edge flyer lead to the second bar shaped guide hole, for cut wing reset resetting means be arranged in the second bar shaped guide hole.

Further, the resetting means resetted for wiper block is each spring that the two ends corresponding to wiper block bar shaped direction are arranged, and corresponding two springs are arranged about the axis for axis symmetry of the first bar shaped guide hole.

Alternatively, described wiper block has 3～6.

Alternatively, described wiper block includes the block with embedding groove, is inlaid with insert and forms the supporting construction of wiper block in embedding groove.

Alternatively, assembled by bearing between described rotor and shell, and bearing is positioned at the rear side of the first guide hole in the position of rotor axial.

According to this utility model, utilize the conveying pressure of mud cleverly, realize centralizer and the expansion of reaming hole cutter and retraction, during reaming hole state, mud is sent by slush pump, mud forms the mud stream with certain pressure intensity in mud hole, for it, bypass is set, connection centralizer and the guide hole of reaming hole cutter, drive corresponding piston, so that corresponding wiper block and cutting edge chord are opened, especially wiper block, can adapt to the size of the boring after reaming hole, its righting diameter of adaptive adjustment, thus there is good adaptability.After stopping boring, slush pump stops, and wiper block and cutting wing are retracted, and integral diameter diminishes, and beneficially screw rod drill bit exits.

Accompanying drawing explanation

Fig. 1 is according to a kind of orientation reaming hole screw rod perspective view of the present utility model.

Fig. 2 is a kind of orientation with the sectional structure schematic diagram of reaming hole screw rod.

Fig. 3 is the A portion enlarged drawing of Fig. 2.

Fig. 4 is the C portion enlarged drawing of Fig. 3.

Fig. 5 is the B portion enlarged drawing of Fig. 2.

In figure: 1. rotor, 2. shell (i.e. stator), 3. centralizer, 4. reaming hole cutter, 5. mud hole, 6. lining, 7. sealing shroud, 8. bearing.

31. wiper blocks, 32. hydraulic channels, 33. chamferings, 34. inserts, 35. pistons, 36. guide holes, 37. springs, 38. assemblies, 39. righting blocks.

41. cutting wings, 42. hydraulic channels, 43. chamferings, 44. cutting edges, 45. pistons, 46. guide holes, 47. springs.

Detailed description of the invention

In helicoid hydraulic motor technical field, screw rod is head end or front end in the front of drilling direction, correspondingly, the other end is tail end or rear end, thus, in orientation, clearly limit end to end and front and back for helicoid hydraulic motor, meanwhile, the accessory on helicoid hydraulic motor is the most also to be limited end to end or front and back by this.

Additionally, helicoid hydraulic motor is also based on rotating the lead plug realized, thus, adapt radially, axially, circumference all limited with drilling direction or rotor 1, shell 2.

Structure shown in Fig. 1 is a kind of basic structure orienting and using reaming hole screw rod, and figure rotor 1 is used for connecting screw drilling tool motor, it is provided that lead plug power, and shell 2 can be all the most Immobile parts with screw drilling tool motor one.

Not showing the spiro rod section assembling structure of rotor 1 and shell 2 in Fig. 1, rotor 1 is generally of multi-head spiral, forms screw rod, and the inner surface of shell 2 is the face of cylinder, thus the inner surface of multi-head spiral and shell 2 cooperatively forms multiple spiral annular seal space, for slurry conveyed.At bit part, from the mud of annular seal space conveying via the endoporus of rotor 1, i.e. mud hole 5 exports.

The centralizer 3 that is arranged on shell 2 thus be also Immobile in the circumference of shell 2.

3 rightings of centralizer are reaming hole cuttves 4, are used for ensureing reaming hole cutter 4 attitude, in other words for the orientation of reaming hole cutter 4.

Lead plug needs cutting fluid, cutting fluid main component to be water, and various chemical industry cutting fluids are referred to as mud with the mixture of water, uses slush pump to be pumped out by mud, and in Fig. 2, the arrow from left to right in mud hole 5 represents the direction that mud pumps out.

Even if not considering pumping pressure, the mud column going deep into stratum also has the biggest mud pressure, thus, the holding of the expansion state that centralizer 3 and reaming hole cutter 4 are realized based on mud pressure is more stable.

Rotor 1 is to provide the parts of cutting power, it is connected with the power of driller motor for reaming hole cutter 4, wherein the endoporus of this rotor 1 (outside screw portion) part is the mud hole 5 for slurry conveyed, as in figure 2 it is shown, for by the mud conveying to drill bit side.

Configuration shell 2 simultaneously, shell 2 does not rotates, and is static in circumference in other words, and general formation with rotor 1 is rotationally connected, such as, pass through the connection that bearing 8 is formed.Comparatively speaking, shell 2 constitutes stator, is i.e. fixedly installed relative to rotor 1.

As illustrated in fig. 1 and 2, stator is the carrier of centralizer 3, for the orientation of reaming hole cutter 4, thus, its needs reliably position in well, as described in the background section, if using the centralizer 3 of radially fixed structure, along with the cutting of reaming hole cutter 4, well can expand, and the orientation of centralizer 3 declines.

In this utility model, centralizer 3 is still arranged on shell 2, but its wiper block 31 uses to float and arranges, and i.e. can also become big along with its overall diameter of axle of the expansion of well (the equivalence diameter of axle).

Specifically, centralizer 3 has multiple guide hole 36 that is radially arranged, such as 4 shown in Fig. 1 and 2 guide hole 36, and these guide holes 36 need to connect with mud hole 5.

Owing to the basic structure of shell 2 with rotor 1 is the structure of coaxial line assembling, therefore, the guide hole 36 being radially arranged, can be realized and the connection in mud hole 5 by radial hole.

Being static relative to rotor 1 in circumference due to shell 2, therefore, it can on the circumference of guide hole 36 distribution, the inwall at shell 2 offers an annular groove, and this annular groove is for the connection of all guide holes 36.

Correspondingly, on rotor 1, some side openings are offered at the position corresponding to annular groove, form the connection of annular groove and mud hole 5, thus form stationary member and the connection of hydraulic channel 32 on dynamic component of rotary pair.

The structure at guide hole 36 place is configured to cylinder body, arranges a piston 35 for each guide hole 36, thus, when slush pump is started working, mud right side in mud hole 5 from figure pumps out to the left, has the mud influent pressure passageway 32 of certain pressure intensity, promotes the piston 35 centrifugal side shifting to guide hole 36.

Owing to wiper block 31 is arranged on piston 35, then wiper block 31 is just provided with outwardly directed ability, i.e. to the ability of centrifugal side shifting, generally speaking, becomes centralizer 3 to be now in open configuration.As previously described, because mud pressure ratio is higher, the centralizer 3 opened has relatively steady state.

Certainly, the range of wiper block 31 needs to be limited, and belongs to floating, thus adapts to the well of different-diameter, thus have extraordinary adaptability in its impulse stroke.

For reaming hole cutter 4, using the setting similar with centralizer 3, its cutting wing 41 uses to float and arranges, but being different from the setting of centralizer 3, cutting wing 41 belongs to cutting members, under the promotion of mud pressure, the stop of its impulse stroke can be arrived, be i.e. centrifuged side stop, the problem that it doesn't matter floats.

Specifically, reaming hole cutter 4 is arranged on the head end of rotor 1, right-hand member as shown in Figure 2, see accompanying drawing 5, reaming hole cutter 4 has multiple guide hole 46 being radially arranged and connect, guide hole 46 and the set-up mode difference of guide hole 36 with described mud hole 5, but is identical from the application of mud pressure, i.e. by mud pressure, cutting wing 41 is released, allow reaming hole cutter 4 be in open configuration.

The principle of institute's foundation is also identical, is all to use piston structure, the such as piston 45 shown in Fig. 5, and piston 45 and guide hole 46 form piston structure.

In the state of spudding in, slush pump works, and along with the beginning of cutting, cutting wing 41 is under conditions of mud pressure promotes piston 45, and expansion puts in place (arriving centrifugal stop), carries out reaming hole operation.

Now, the extended degree adapted with cutting wing 41 of well, if centralizer 3 is fixedly installed, its support can be limited by bigger, and in the structure shown in Fig. 3, mud pressure can promote piston 35 to be extrapolated by wiper block 31 (centrifugal side), makes centralizer 3 be supported on reliably on the borehole wall.

In the limit travel of wiper block 31, its expansion changes along with the size of well, thus has good adaptability, has the orientating function in different wells in other words.

Owing to structure as Figure 1-5 employs mud pressure cleverly, without arranging special hydraulic dilatation equipment, it is the easiest to manufacture and design.

During withdrawing, stop boring, slush pump the most no longer works, wiper block 31 on centralizer 3 is resetted by the effect of external pressure or is forced to reset, cutting wing 41 on reaming hole cutter 4 is also resetted by the effect of external pressure or is forced to reset, not only easily exit from well, and cut wing 41 and return, it is not easy to damage well.

Owing to mud pressure ratio is higher, therefore, reaming hole cutter 4 can keep stable expansion attitude.Meanwhile, from processing complexity, the expansion structure of cutting wing 41 uses the identical structure of expansion structure with wiper block 31 to be also desirable.I.e. hydraulic channel 32 and hydraulic channel 42 the most directly uses radial hole.

In some preferred embodiments, although difficulty of processing increases, but the expansion attitude of more stable reaming hole cutter 4 can be obtained.In the structure shown in Fig. 2, hydraulic channel 42 is not to use simple radial hole, but its import lateral deviation is backward put, outlet then with guide hole 46 coaxial line.Seeing Figure of description 2, in figure, the head end aperture ratio of visible reaming hole cutter 4 is relatively big, is the blank area of reducing at this, and mud pressure is relatively small, and due to reduced diameter portion mud pressure shakiness, undulatory property is bigger in other words, can affect the job stability of cutting wing 41.Therefore, use and hydraulic channel 42 is biased backward, advantageously ensure that the job stability of cutting wing 41.

Specifically, include with the hydraulic channel 42 of guide hole 46 and the Part I of the second guide hole coaxial line and parallel with Part I and be arranged on the Part III connected on rear side of reaming hole cutter 4 with mud hole 5 for connecting mud hole 5, and the Part II of Part I and Part III is axially connected at rotor 1, three parts that the concrete form of hydraulic channel 42 is used are all straight holes, it is beneficial to processing, and can be effectively by rearmounted for the import of hydraulic channel 42, the stability making mud pressure is relatively good, so that the stability that cutting wing 41 extends out state is relatively good.

Through on-the-spot test, when the draw ratio of the length of Part II and mud hole 5 diameter is about 12:1, the wellbore surface quality expanded is preferable, can land used, the length of Part II is 10:1～16:1 with the draw ratio of mud hole 5 diameter, it is still available selection, it is clear that when draw ratio is relatively small, difficulty of processing is less, when draw ratio is bigger, the stability of reaming hole cutter 4 can be more preferable, but the import of hydraulic channel 42 selection motility with this understanding can be poor.

Additionally, due to reaming hole cutter 4 is directly installed on rotor 1, thus without the concern for the problem of connection under hydraulic channel 42 revolving conditions on centralizer 3, thus its difficulty of processing is relatively small.

As mentioned before, in certain embodiments, wiper block 31, cutting wing 41 can rely on external pressure to reset, i.e. to corresponding guide hole 36, the centripetal side shifting of guide hole 46, in order to be more beneficial for withdrawing, the two ends of described wiper block 31 two ends and cutting wing 41 are equipped with chamfering, and this kind of structure is conducive to wiper block 31 and the return of cutting wing 41, and is also beneficial to reaming hole screw rod exiting from well.

Further, in order to ensure accuracy and the rapidity of return, use forced resetting structure.

In some embodiments, it is referred to the conventional setting of hydraulic cylinder, the resetting structure of piston 35 and piston 45 is arranged in corresponding guide hole, in guide hole 36, is i.e. provided with the resetting means resetted for wiper block 31, be provided with for cutting the resetting means that wing 41 resets at guide hole 46.This kind of structure, with reference to the reset mode of single-action hydraulic cylinder, does not repeats them here.

In further embodiments, using the external structure reset mode being different from single-action hydraulic cylinder, referring specifically to Figure of description 3～5, the resetting structure adapted is:

Described guide hole 36 and guide hole 46 are circular hole, and correspondingly, piston 35 and piston 45 are circular piston, and in order to improve the stability of operation, piston 35 and piston 45 all use piston structure.

As shown in Figure 1, wiper block 31 is along the axially arranged bar blocks of rotor 1, correspondingly, shell 2 is provided with the first bar shaped guide hole guiding wiper block 31, thus wiper block 31 is owing to being assembled together with piston 35, first bar shaped guide hole and guide hole 36 cooperatively form dual-guiding structure so that the assembly reliability of wiper block 31 is more preferable.

Meanwhile, the resetting means resetted for wiper block 31 is arranged in the first bar shaped guide hole, can reduce the difficulty that resetting means is arranged accordingly, i.e. need not be disposed in deeper guide hole 36.

Correspondingly, cutting wing 41 is to cut wing along the bar shaped that rotor 1 is axially arranged, correspondingly, is provided with the second bar shaped guide hole guiding cutting wing 41 on rotor 1, and based on same consideration, double guiding structurals are conducive to the assembly reliability making cutting wing 41 more preferable.

And the resetting means resetted for cutting wing 41 is arranged in the second bar shaped guide hole, can reduce the difficulty that resetting means is arranged accordingly.

In a preferred embodiment, the such as setting of wiper block 31 resetting means, see accompanying drawing 3 and accompanying drawing 4, in figure, wiper block 31 is T-type structure, on centralizer 3 body, T-slot is formed by assembly 38, wiper block is arranged in T-slot, wiper block 31 can be restrained at the two ends that shell 2 is axial, form outwardly directed maximum, the i.e. notch of T-slot forms the constraint adapted, at notch, the both sides corresponding to the wiper block 31 of T-type structure are respectively provided with a spring 37, and corresponding two springs 37 are arranged about the axis for axis symmetry of guide hole 36, the axially symmetric structure formed has good reset function.

Assembly 38 is strip of sheet body, is fastened on centralizer 3 by screw.

Further, a kind of forced resetting structure of cutting wing 41 is found in Fig. 5, is also adopted by the described resetting structure being analogous in another embodiment of wiper block 31 in figure, i.e. uses two springs 47 of axial symmetry distribution for cutting the reset of wing 41.

Owing to cutting wing needs more preferable stability, can be relatively large by the cross section of its piston 45 joined, correspondingly, can every side two for its spring 47 configured.

It is preferably 4 about described wiper block 31, as it is shown in figure 1, become square distribution, in certain embodiments, there are three wiper blocks 31 and also be able to play preferable supporting role, but can not be less than three.

In certain embodiments, wiper block 31 at most uses 6, and time too many, not only support effect is not significantly improved, and difficulty of processing and cost are the biggest, also housing can be produced bigger intensity and slacken.

In like manner, cutting wing 41 is typically chosen in 3～5, can also be chosen as two in certain embodiments, the most not can exceed that 5.

In order to improve maintainability, described wiper block 31 includes the block with embedding groove, in embedding groove, it is inlaid with insert 34 and forms the supporting construction of wiper block, it is to be understood that the part that wiper block 31 easily lost efficacy is its centrifugal end structure, need to support, and produce friction with supporting surface, if integral replacing can increase bigger cost, if change frangible portions therein, specifically support section, then can greatly reduce use cost.Use mosaic texture, quick-replaceable can be conducive to, improve maintainability.

Correspondingly, the cutting edge 44 of cutting wing 41 is also adopted by replaceable structure, cuts wing 41 from without integral replacing, saves overall use cost.

In the structure shown in Fig. 2, assembled, as in figure 2 it is shown, figure middle (center) bearing 8 is expanded letter bearing, to improve the stability of revolving support by bearing 8 between described rotor 1 and shell 2.

Further, bearing 8 is positioned at the rear side of guide hole 36 in the position that rotor 1 is axial, is beneficial to the setting of guide hole 36, and guide hole 36 can not the interference of shape matched bearings 8 in other words.

Claims

1. an orientation uses reaming hole helicoid hydraulic motor, it is characterised in that including:

Rotor (1), this rotor (1) is the screw rod with multi-head spiral；

Shell (2), is sleeved on rotor (1) and forms stator, and and rotor (1) between form multiple annular seal space for slurry conveyed based on described multi-head spiral；

Centralizer (3), is arranged on shell (2), has multiple the first guide hole being radially arranged, and is arranged on the first piston of the first guide hole, and wherein first piston connects wiper block (31)；And

Reaming hole cutter (4), is arranged on rotor (1) head end, has multiple the second guide hole being radially arranged, and is arranged on the second piston of the second guide hole, and wherein the second piston connects cutting wing (41)；

Wherein, the endoporus of rotor (1) section at centralizer (3) and reaming hole cutter (4) place is mud hole (5), and annular seal space is connected with the first guide hole and the second guide hole by mud hole (5).

Orientation reaming hole helicoid hydraulic motor the most according to claim 1, it is characterized in that, include with the hydraulic channel of the second guide hole (42) and the Part I of the second guide hole coaxial line and parallel with Part I and be arranged on reaming hole cutter (4) rear side and the Part III that connects with mud hole (5) for connecting mud hole (5), and the Part II at rotor (1) axially connection Part I with Part III.

Orientation reaming hole helicoid hydraulic motor the most according to claim 2, it is characterised in that the length of Part II is 10:1～16:1 with the draw ratio of mud hole (5) diameter.

4. according to the arbitrary described orientation reaming hole helicoid hydraulic motor of claim 1-3, it is characterised in that the two ends of described wiper block (31) two ends and cutting wing (41) are equipped with chamfering.

Orientation reaming hole helicoid hydraulic motor the most according to claim 4, it is characterised in that be provided with the resetting means resetted for wiper block (31) in the first guide hole, is provided with for cutting the resetting means that wing resets in the second guide hole.

Orientation reaming hole helicoid hydraulic motor the most according to claim 4, it is characterised in that described first guide hole and the second guide hole are circular hole, correspondingly, first piston and the second piston are circular piston；

Wiper block (31) is along the axially arranged bar blocks of rotor (1), correspondingly, being provided with the first bar shaped guide hole guiding wiper block (31) on shell (2), the resetting means resetted for wiper block (31) is arranged in the first bar shaped guide hole；

Cutting wing (41) is to cut wing along the bar shaped that rotor (1) is axially arranged, correspondingly, rotor (1) is provided with to cutting wing (41) the second bar shaped guide hole of guiding, is used for cutting the resetting means that wing (41) resets and is arranged in the second bar shaped guide hole.

Orientation reaming hole helicoid hydraulic motor the most according to claim 6, it is characterized in that, the resetting means resetted for wiper block is each spring (37) that the two ends corresponding to wiper block (31) bar shaped direction are arranged, and corresponding two springs (37) are arranged about the axis for axis symmetry of the first bar shaped guide hole.

Orientation reaming hole helicoid hydraulic motor the most according to claim 1, it is characterised in that described wiper block (31) has 3～6.

Orientation reaming hole helicoid hydraulic motor the most according to claim 1, it is characterised in that described wiper block (31) includes the block with embedding groove, is inlaid with insert (34) in embedding groove and forms the supporting construction of wiper block.

Orientation reaming hole helicoid hydraulic motor the most according to claim 1, it is characterized in that, assembled by bearing (8) between described rotor (1) and shell (2), and bearing (8) is positioned at the rear side of the first guide hole in the position that rotor (1) is axial.