CN208456508U - A kind of drilling well reaming reaming hole device - Google Patents

Abstract

The utility model relates to a kind of drilling well reaming reaming hole devices, including are located at drill string the lowermost and lead eye hole-drawing device, lead and are connected with explosion reamer above eye hole-drawing device, reducing is connected with above the reamer that explodes and repairs hole device；Leading eye hole-drawing device includes reaming drill string, reaming drill string includes successively being linked together from top to bottom and the hole-drawing device female connector of coaxial line, reaming upper cone, reaming cylindrical body and reaming lower cone, the lower end of hole-drawing device female connector box thread is equipped with the hole-drawing device fluid course extended downwardly, the periphery of reaming upper cone, reaming cylindrical body and reaming lower cone is evenly distributed with multiple tracks reaming hurricane band, is embedded with reaming scraper on each reaming hurricane band；The bottom of reaming lower cone is connected with neck eyeball forming head, and the bottom of neck eyeball forming head is equipped with multiple hole-drawing device hydrophthalmias, and each hole-drawing device hydrophthalmia passes through hole-drawing device hydrophthalmia duct respectively and communicates with hole-drawing device fluid course.The device reaming speed is fast, and underground risk is low, and avoids making a trip repeatedly, greatly improves drilling efficiency.

Description

A kind of drilling well reaming reaming hole device

Technical field

The utility model relates to a kind of drilling well reaming reaming hole devices, belong to technical field of oil drilling equipment.

Background technique

Drill string, which is gone into the well, must first carry out reaming, and traditional reaming tool generally uses tooth milling roller bit, when mill teeth rotary drill When head downlink is obstructed, need to pull out of hole and transfer neck eye tool.General neck eye tool mainly has neck eye die nipple and neck eye scraper, neck Eye die nipple structure be on the basis of die nipple in cone welding blade, by female connector, blade, guide bar and shape of a hoof end Four part of portion composition；The structure for leading eye scraper is the welding blade on stepped cylindrical ontology, by female connector, blade, ontology, is led Draw column composition.It descends tooth milling roller bit to continue reaming again after neck eye, makes a trip repeatedly in this way, waste many working hours；Also It is easy to mark new eye, the method that small bit pressure is usually taken, is interrupted reaming reduces reaming efficiency, waste of time.Outside wheel carrier The gauge teeth of side is insufficient to borehole wall cutting force, and reaming effect is limited.It is small to return bits channel, lifts from the top and puts down and easily suppresses pump.

In petroleum drilling operation, Creep of gypsum and extruding can cause hole shrinkage, bit freezing, setting of casing difficulty, well cementation matter It measures difference and squeezes and ruin casing etc., cause serious drilling failure.When boring chance saline bed stratum, conventional way is to take early open The method that pump, evening pluck pump, diligent reaming, strict control drilling speed, and increase drilling fluid density, prevent saline bed compacted by pressure difference Become, but all cannot fundamentally solve the above hidden danger.More safe way is to expand saline bed well using underreamer technology The wellbore of section, to increase cement thickness, improves cementing quality and guarantor to offset displacement caused by Creep of gypsum Casing is protected.In addition, bore meet easily leakage, easily collapse, the bad grounds such as easy undergauge when, need to implement expansion tube closure intricately Layer construction；Or by casing programme, casing size is limited and needs the large-sized casing of tripping at the middle and upper levels, is also required to above to being bored Well section carries out ream operation.

Traditional ream operation method generallys use reaming and Double Circular Bit after Waterpower hydraulic pressure reamer is bored and carries out with brill Reaming.Top in Waterpower hydraulic pressure reamer body is equipped with a piston, and top land is connected with spring.Reamer is in the spare time When setting state, reaming wing is retracted in ontology；When needing to carry out reaming hole operation, that is, increase drilling well flow velocity, cleaner for high-pressure drilling fluid Form certain pressure difference by throttling set, pressure difference pushes piston to do the movement of compressed spring, while the rack gear of piston with Gear engagement on reaming hole body, opens cornish bit chord, realizes reaming drilling.Double Circular Bit is by pilot bit and reaming wing two Part forms, and neck eye portion is almost the same with conventional bit structure, and the bottom in pit shaft when drilling can drill out a diameter Lesser neck eye；Reaming wing is the prism structure with cutting edge, the side of circumferentially disposed Double Circular Bit, usually only It is distributed within the scope of quarter turn, energy high-ranking military officer's eye expands as the wellbore of technique desired size.

Due to being influenced by reaming formation compaction intensity, formation hardness and wellbore hole deviation, conventional hydraulic hydraulic underreamer into After row bores reaming there are the reamer breaking wing, pore-enlargement is long, reaming torque is big, drilling tool risk is high, reaming effect is poor the problems such as. Double Circular Bit carries out enlarging while drilling there are pore-enlargements the problems such as long, reaming torque is big, bit life is short.Especially leakage, Ream operation is carried out in the stratum easily to collapse, difficulty is larger, and risk is higher, and reaming precision not can guarantee sometimes, this is largely On limit drillng operation next step construction.

Utility model content

The purpose of this utility model is that overcoming problems of the prior art, a kind of drilling well reaming reaming hole dress is provided It sets, reaming speed is fast, and reaming effect is good, and underground risk is low, and avoids making a trip repeatedly, greatly improves drilling efficiency.

In order to solve the above technical problems, a kind of drilling well reaming reaming hole device of the utility model, including it is most lower positioned at drill string The neck eye hole-drawing device at end is connected with explosion reamer, the top connection of the explosion reamer above the neck eye hole-drawing device There is reducing to repair hole device；The neck eye hole-drawing device includes reaming drill string, and the reaming drill string includes successively being linked as one from top to bottom The hole-drawing device female connector of body and coaxial line, reaming upper cone, reaming cylindrical body and reaming lower cone, the reaming upper cone are upper Small lower big structure, the reaming lower cone are up big and down small structure, and the inner cavity of the hole-drawing device female connector is equipped with to be screwed on drilling rod Box thread, the lower end of the box thread be equipped with reaming drill string coaxial line and the hole-drawing device fluid course that extends downwardly, it is described The periphery of reaming upper cone, reaming cylindrical body and reaming lower cone is evenly distributed with the reaming spiral that multiple tracks has one fixed width Band, the rotation direction of each reaming hurricane band are dextrorotation, are respectively equipped on the right side of the top surface of each reaming hurricane band along reaming spiral With the scraper caulking groove extended, it is embedded with reaming scraper respectively in each scraper caulking groove；The bottom of the reaming lower cone connects There is neck eyeball forming head, the bottom of the neck eyeball forming head is equipped with multiple hole-drawing device hydrophthalmias, and each hole-drawing device hydrophthalmia passes through respectively Hole-drawing device hydrophthalmia duct is communicated with the hole-drawing device fluid course.

Compared with the existing technology, the utility model achieves following the utility model has the advantages that during drill string is gone into the well, the lowermost Neck eyeball forming head is in wellbore middle always, avoids the possibility on wedging stratum；Under reaming upper cone, reaming cylindrical body and reaming It is inlaid with reaming scraper on the reaming hurricane band of cone periphery winding, removing the borehole wall when rotated keeps wellbore unblocked, the work Tool avoids while improving the effect of neck eye, reaming instead of the effect of common neck eye die nipple, neck eye scraper and rock bit Mark the risk of new eye.Reaming hurricane band is located at the position of reaming lower cone periphery, and tactical diameter is smaller more down, convenient for neck eye And reaming；The position diameter that reaming hurricane band is located at reaming cylindrical body periphery is maximum, can play the role of righting；Reaming spiral The position that band is located at reaming upper cone periphery is up-small and down-big, above mentions convenient for reaming tool with drill string is smooth.Due to being cone-type spiral Band and reaming drill string are integrally formed, and spiral band strength is big, and the reaming scraper inlayed on reaming hurricane band bears borehole wall lateral force Ability is strong, obvious to the shear action of the borehole wall.When drill string come downwards to explosion reamer and the height of predetermined reaming section it is completely concordant When, drill string stops downlink and stops rotating；Slush pump pressurization triggering explosion reamer explosion, realizes reaming；Then drill string continues Lower reducing of exercising repairs the well section that hole device reaches reaming, and carrying out repairing hole to the well section keeps reaming section rounding smooth；So it is not necessarily to It makes a trip repeatedly, reaming, reaming and the overall process for repairing hole can be completed, greatly improve the production efficiency of drilling well.The tool is primary Lower brill can synchronize realize neck eye, reaming effect, without making a trip repeatedly, can continuous reaming so that reaming efficiency is further It is promoted, can be shortened the processing time for meeting complicated state, improved production timeliness, preferable direct economic benefit can be brought；At complexity The shortening for managing the time can substantially reduce probability and accelerate oil and gas development dynamics that the secondary failure in underground occurs, bring considerable Indirect economic effect.

As the improvement of the utility model, the explosion reamer includes connecing under the reaming top connection and reaming being mutually screwed on The inner cavity top of head, the reaming top connection is equipped with reaming top connection box thread, and the lower end of the reaming lower contact is screwed with biography Quick-fried connector, the lower end of the transmission detonation joint are screwed with the loading pole extended downwardly, and the top of the loading pole is equipped with along loading pole The loading pole centre bore that axis extends, the lower end of the loading pole is screwed with loading pole lower contact；The outer wall of the loading pole is set There is the helicla flute for extension of spiraling, is embedded with primacord in the helicla flute, the lower end of the primacord is fixed on the loading pole In lower contact, the upper end of the primacord is inserted into loading pole and is fixed in the loading pole centre bore；The transmission detonation joint Inner cavity is equipped with the propagation of explosion component that can ignite primacord, and the inner cavity lower part of the reaming lower contact, which is equipped with, ignites the propagation of explosion component Initiator, the inner cavity of the reaming top connection is equipped with the pressure blasting device that can hit the initiator.It first will be equipped with fried In the primacord upper end insertion loading pole centre bore of medicine, then primacord is wrapped in the helicla flute of loading pole, primacord Lower end is fixed in loading pole lower contact, and the upper end of loading pole is mutually screwed on transmission detonation joint to be made in primacord upper end and transmission detonation joint Propagation of explosion attached components, then the upper end of transmission detonation joint is screwed on reaming lower contact makes initiator be connected with propagation of explosion component, then will Reaming lower contact, which is screwed in below reaming top connection, makes pressure blasting device be connected with initiator, last entire explosion reaming dress Set the lower end that drilling rod is screwed in by the reaming top connection box thread of reaming top connection.Make in the guiding neck eye of loading pole lower contact Under, loading pole is lowered with drilling rod to scheduled reaming position, is then turned on slush pump and is pressurizeed to drilling rod inner cavity, drilling fluid Pressure unlocks pressure blasting device, hits the initiator of lower section, the shock wave initiation propagation of explosion component and lead quick-fried that initiator exports Rope, the built-in high explosive of primacord, explosion velocity are up to 7800m/s, moment heavy explosion, since primacord is in the helicla flute of loading pole Several weeks are wound with, the shock wave for generation of exploding causes the formation rock of this section of circle to crush and break in rock of borehole It splits, to achieve the effect that reaming；Then slush pump is opened to operational discharge capacity, landwaste caused by explosion reaming is carried out ground Then face detects hole diameter by cable tripping in caliper logging tool, judges whether to meet scheduled reaming requirement.The device does not need Rotary tools and start other power-equipments, no down-hole equipment risk, may be implemented fixed point, it is quick, safe and efficient, inexpensive Down-hole, and it is easy to operate.

The explosion reamer includes the reaming top connection and expansion being mutually screwed on as a further improvement of the utility model, Hole lower contact, the lower end of the reaming lower contact are screwed with transmission detonation joint, and the lower end of the transmission detonation joint, which is screwed with, to be extended downwardly Reaming rifle, the lower end of the reaming rifle is screwed with reaming rifle lower contact, and the lower end of the reaming rifle lower contact is equipped with reaming rifle Lower contact；Multiple blind holes are evenly distributed on the gun barrel of the reaming rifle, the reaming rifle lumen centers are equipped with firing mount, the bullet The reaming bullet with blind hole one-to-one correspondence and coaxial line on the reaming rifle is evenly distributed on frame, the center of the firing mount is equipped with The primacord of each reaming bullet is ignited, the lower end of the primacord is fixed on the lower end of the firing mount, and the upper end of the primacord is inserted In the centre bore for entering the transmission detonation joint；The inner cavity of the transmission detonation joint is equipped with the detonating primer that can ignite primacord, the reaming The inner cavity lower part of lower contact is equipped with the initiator for igniting the detonating primer, and the inner cavity of the reaming top connection is equipped with and can hit The pressure blasting device of the initiator.Reaming rifle lower contact guiding neck eye effect under, reaming rifle with drilling rod be lowered to Scheduled reaming position is then turned on slush pump and pressurizes to drilling rod inner cavity, and the pressure of drilling fluid unlocks pressure blasting device, hits Hit the initiator of lower section, the shock wave initiation detonating primer and primacord of initiator output, the built-in insensitiveness high explosive of primacord, explosion velocity Up to 7800m/s, each reaming bullet heavy explosion in moment reaming rifle, the blind hole on reaming rifle are blown, and generation of exploding is rushed It hits wave to act in rock of borehole, causes the formation rock of this section of circle to crush and rupture, to achieve the effect that reaming；So Slush pump is opened to operational discharge capacity afterwards, landwaste caused by explosion reaming is carried out into ground, then passes through cable tripping in hole diameter Logging instrument detects hole diameter, judges whether to meet scheduled reaming requirement.The device does not need rotary tools and starts other power Fixed point, quick, safe and efficient, inexpensive down-hole, and operation side may be implemented in equipment, no down-hole equipment risk Just.

The pressure blasting device includes being located at reaming top connection inner cavity as a further improvement of the utility model, The perforated baffle and striker of lower part, the perforated baffle are located at the lower section of reaming top connection box thread, and the striker is located at described It the lower section of perforated baffle and is extended downwardly along the centre bore of the reaming top connection, the periphery of the striker passes through O-ring and institute It states reaming top connection centre bore and realizes sealing；The lower end of the striker is inserted into the inner cavity of the reaming lower contact, the striker Lower circumferential on be plugged with shear pin, the external end head of the shear pin is inlaid in striker bushing, under the striker bushing End is supported on the step of the reaming lower contact, and the upper end of the striker bushing is resisted against the lower end surface of the reaming top connection Lower section；The lower end tip of the striker is directed at the upper end center of the initiator.Shear pin by striker be fixed on striker bushing and In the centre bore of reaming top connection, striker bushing be fixed on reaming top connection lower end surface and reaming lower contact interior step it Between, prevent striker during going into the well since gravity moves down；Shear pin have certain intensity in case pipe string vibration when Damage, and can reliably be cut under the shear pressure of design.When slush pump is forced into setting value to drilling rod inner cavity, shear pin It is cut, striker fast downlink, the lower end tip high-speed impact initiator of striker, which is ignited, generates shock wave.

As a further improvement of the utility model, the bore seal of the initiator be filled with detonating charge, described The upper end of quick-fried device is located in the centre bore of the reaming lower contact, and the lower end of the initiator is plugged in the counterbore of plug screw, institute The periphery for stating plug screw is screwed in the lower end screw hole of the reaming lower contact, and the bottom centre of the plug screw is equipped with plug screw centre bore It connects with the plug screw counterbore.Plug screw is screwed in the screw hole of reaming lower contact upwards from below and fixes initiator, detonation Device, which is under pressure after the striker impact of priming device, to be ignited, propagation of explosion group of the shock wave from the plug screw centre bore of plug screw bottom downwards Part transmitting.

The center bore inner wall of the reaming top connection is equipped in reaming top connection as a further improvement of the utility model, Annular groove, the reaming top connection inner groove are looped around the top periphery of the striker, symmetrically set in the reaming top connection There is reaming top connection radial hole to connect with the reaming top connection inner groove.When striker is in non-unlocked state, drilling rod inner cavity Drilling fluid, that is, mud sealed up by the O-ring of striker periphery；When slush pump is forced into setting value, shear pin is cut, and is hit Needle fast downlink percussion primer, top connection radial hole exposes at this time, the drilling fluid of drilling rod inner cavity from top connection inner groove and on There is big ups and downs, construction personnel's fluctuating by mud pump pressure on well in the outflow of connector radial hole, the pressure of slush pump Know that explosion reaming has been realized in underground.

The propagation of explosion component includes being located in the transmission detonation joint centre bore as a further improvement of the utility model, Propagation of explosion assembly housing, the top of the propagation of explosion assembly housing are shell reduced diameter section, and the lower part of the propagation of explosion assembly housing is shell Body enlarged diameter section, the periphery of the shell reduced diameter section is realized by O-ring and the transmission detonation joint centre bore to be sealed, the shell The top of body enlarged diameter section is resisted against on the step of the transmission detonation joint centre bore, and the lower end center of the shell enlarged diameter section connects It is connected to the propagation of explosion efferent duct extended downwardly, the inner cavity of the propagation of explosion efferent duct and the centre bore of the propagation of explosion assembly housing mutually pass through Logical, the lower end of the propagation of explosion efferent duct is inserted into the loading pole centre bore, and the propagation of explosion is inserted into the upper end of the primacord In efferent duct；The top of the propagation of explosion assembly housing centre bore is equipped with high explosive shell, the lower end branch of the high explosive shell On the step of propagation of explosion assembly housing centre bore, the inner cavity of the high explosive shell is equipped with high explosive, described to prang pencil for support The both ends of shell are by high explosive enclosure cap cap closure.High explosive shell from the upper step hole that top is fitted into propagation of explosion assembly housing, The upper and lower ends of high explosive shell are sealed with sealant prevents its dampness, and propagation of explosion assembly housing fills in transmission detonation joint from bottom to top In centre bore, shell enlarged diameter section is resisted against on the step of transmission detonation joint centre bore and is positioned；The shock wave that initiator generates The high explosive in high explosive shell will be ignited, then ignites the primacord end in propagation of explosion efferent duct, make entire primacord moment It is sudden and violent fried.

The reaming bullet includes shell case as a further improvement of the utility model, and the shell case is directed toward reaming gun axis line Inner termination be in truncated cone, the inner termination of the shell case is equipped with shell case propagation of explosion centre bore, fills in the shell case propagation of explosion centre bore Be filled with reaming bullet booster explosive, the inner cavity of the shell case is equipped with cavity liner, the cavity liner be taper and with the shell case coaxial line, The cavity liner is the axis that the vertex of a cone is perpendicularly oriented to reaming rifle, is filled with reaming between the cavity liner and the inner wall of the shell case Main charge is played, the vertex of a cone of the reaming bullet main charge is connected to each other with the reaming bullet booster explosive.Primacord is by reaming bullet booster explosive It ignites, reaming bullet booster explosive ignites reaming bullet main charge, cavity liner is blown, the shock wave for generation of exploding will be on reaming rifle Blind hole is blown, and is acted in rock of borehole, realizes the purpose of reaming.

It includes repairing hole device outer cylinder that the reducing, which repairs hole device, as a further improvement of the utility model, described to repair hole device The upper end of outer cylinder is equipped with taper box thread, and the middle part for repairing hole device outer cylinder short transverse is reducer, described to repair hole device outer cylinder Inner cavity be equipped with and the mandrel on the device of hole of repairing of repairing hole device outer cylinder coaxial line, the reducer outer wall uniform winding for repairing hole device outer cylinder There are three screw wings, be uniformly distributed on every screw wing there are five screw wing radial hole, is respectively equipped in each screw wing radial hole Radial piston, the inner termination of each radial piston are respectively equipped with radial piston inclined-plane, and it is living to be located at three radial directions on the same circumference The radial piston inclined-plane of plug is born against on the same tapered ramp for repairing hole device tapered sleeve periphery, it is each it is described repair hole device tapered sleeve according to Secondary to be sleeved on the periphery for repairing mandrel on the device of hole, each three tapered ramps repaired on the device tapered sleeve of hole are centrosymmetric setting And lower end is tilted to axis direction respectively；T-slot, the radial piston are respectively equipped on the tapered ramp for repairing hole device tapered sleeve Radial piston inclined-plane on be respectively equipped with the T shape tenon that can be slided along the T-slot, the T shape tenon be embedded in corresponding T-slot respectively In；The upper end for repairing mandrel on the device of hole, which is equipped with, repairs mandrel piston on the device of hole, the periphery sealing for repairing mandrel piston on the device of hole It is supported on the inner wall for repairing hole device outer cylinder, the bottom surface for repairing mandrel piston on the device of hole is equipped with plane bearing, the plane axis The lower section held is equipped with upper spring seat, and the lower section of the upper spring seat is equipped with reset spring, and the lower end of the reset spring is supported on On lower spring cup, the lower spring cup is fixed on by repairing hole device lock pin and is repaired on the device outer cylinder of hole described.It is each on three screw wings From being uniformly distributed there are five radial piston, in equilateral triangle distribution, there are three radial pistons on each cross section；Due to radial direction T shape tenon on piston inclined-plane is matched with the T-slot on the tapered ramp for repairing hole device tapered sleeve so that radial piston inclined-plane always with The tapered ramp for repairing hole device tapered sleeve fits.When slush pump is opened, the pressure of mud, which acts on, is repaired on the device of hole on mandrel piston, is repaired Mandrel overcomes the tension downlink of reset spring on the device of hole, and drive respectively repairs hole device tapered sleeve downlink, respectively repairs the tapered ramp of hole device tapered sleeve Top and the radial piston inclined-plane of each radial piston fit so that each radial piston is protruding, radial piston is at this time Stretching state.When slush pump termination of pumping, the inside and outside differential pressure of tool is balanced, and mandrel uplink on the device of hole is repaired in the tension promotion of reset spring It resets, the lower part for respectively repairing the tapered ramp of hole device tapered sleeve at this time and the radial piston inclined-plane of each radial piston fit, so that respectively The outer end face of radial piston is lower than the surface than screw wing, and radial piston is free state at this time.When slush pump is again turned on, The tension downlink that mandrel on the device of hole overcomes reset spring again is repaired, drive respectively repairs hole device tapered sleeve downlink, respectively repairs the wedge of hole device tapered sleeve The middle part on shape inclined-plane and the radial piston inclined-plane of each radial piston fit, so that the outer end face of each radial piston and screw wing Flush, radial piston is concordant state at this time.

The lower end for repairing mandrel on the device of hole, which is screwed with, as a further improvement of the utility model, repairs mandrel under the device of hole, The top for repairing mandrel under the device of hole is equipped with and repairs mandrel piston under the device of hole, it is described repair mandrel piston under the device of hole and be resisted against bottommost repair Below the lower end surface of hole device tapered sleeve, the subjacent for repairing mandrel piston under the device of hole is equipped with faced washer, the faced washer Lower end surface be supported on the thrust ball bearing one with self-aligning seat washer, the lower section of the thrust ball bearing one is equipped with unidirectional rotatable Transposition ring, it is described transposition ring lower end surface be supported on the thrust ball bearing two with self-aligning seat washer, the thrust ball bearing two It is supported on transposition collar bearing seat, the transposition collar bearing seat is fixed by screws in described repair under the device of hole on the circumference of mandrel； The periphery wall of the transposition ring is symmetrically arranged with three groups of transposition sliding slots being recessed inwardly, and three groups of transposition sliding slots are outer the transposition ring Week forms end to end loop structure；The spiral underwing for repairing hole device outer cylinder is screwed with the transposition radially extended respectively Pin, the inner termination of the transpositing pin are inserted in respectively in corresponding transposition sliding slot；The transposition sliding slot includes passing through skewed slot successively Connected kerve, elongated slot, kerve and short slot, each kerve are respectively positioned on the sustained height below skewed slot, each elongated slot and the equal position of short slot In the top of skewed slot, the top of each elongated slot extends to the top of the transposition ring short transverse, the top of each short slot vertically upward Positioned at the middle part of the transposition ring short transverse；The skewed slot successively links up kerve, elongated slot, kerve, short slot, bottom in fold-line-shaped Slot, elongated slot simultaneously form circulation on the circumference of transposition ring.It repairs mandrel under the device of hole and follows and repair mandrel on the device of hole and respectively repair hole device tapered sleeve Synchronization lifting, due to transpositing pin be fixed on repair it is motionless on the device outer cylinder of hole, the inner termination of transpositing pin be stuck in transposition sliding slot in, work as transposition When ring is with the lifting of hole device tapered sleeve is respectively repaired, single direction rotation, thrust ball bearing one and thrust ball axis are carried out under the guiding of transposition sliding slot Holding two can guarantee to replace ring rotation flexibly, and transpositing pin is determined in the cooperation position of transposition sliding slot repairs hole device tapered sleeve in height The position in direction, to determine the state of radial piston.When slush pump is opened, the pressure promotion of mud repair on the device of hole mandrel and Respectively repair hole device tapered sleeve downlink, transpositing pin slides the top for respectively repairing the tapered ramp of hole device tapered sleeve at this time to the top of elongated slot and each The radial piston inclined-plane of radial piston fits, so that each radial piston is protruding, radial piston is stretching state at this time.When When slush pump termination of pumping, the inside and outside differential pressure of tool is balanced, and the tension promotion of reset spring is repaired mandrel uplink on the device of hole and resetted, and is changed at this time Position pin slides radial piston inclined-plane phase of the lower part with each radial piston for the tapered ramp that hole device tapered sleeve is respectively repaired to the bottom of kerve Fitting, so that the outer end face of each radial piston is lower than the surface than screw wing, radial piston is free state at this time.Work as slush pump When being again turned on, the tension downlink that mandrel on the device of hole overcomes reset spring again is repaired, drive is respectively repaired hole device tapered sleeve downlink, changed at this time Position pin slides radial piston inclined-plane phase of the middle part with each radial piston for the tapered ramp that hole device tapered sleeve is respectively repaired to the top of short slot Fitting, so that the flush of the outer end face of each radial piston and screw wing, radial piston is concordant state at this time.Pass through transposition The cooperation of pin and transposition sliding slot, can accurately control the adjustable height for respectively repairing hole device tapered sleeve, to accurately control radial piston Stretching state.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model drilling well reaming reaming hole device.

Fig. 2 is the structural schematic diagram of explosion reamer embodiment one in Fig. 1.

Fig. 3 is the enlarged drawing of the upper half Fig. 2.

Fig. 4 is the structural schematic diagram of explosion reamer embodiment two in Fig. 1.

Fig. 5 is the enlarged drawing of the upper half in Fig. 4.

Fig. 6 is the structural schematic diagram of reaming bullet in Fig. 4.

Fig. 7 is the perspective view that reducing repairs hole device in Fig. 1.

Fig. 8 is the cross-sectional view that reducing repairs hole device in Fig. 1.

Fig. 9 is the perspective view that hole device tapered sleeve is repaired in Fig. 8.

Figure 10 is the perspective view of radial piston in Fig. 8.

Figure 11 is the main view of transposition ring in Fig. 8.

Figure 12 is the perspective view of Figure 11.

Figure 13 is the expanded view of transposition sliding slot in Figure 11.

Figure 14 is the cutaway view Amplified image that eye hole-drawing device is led in Fig. 1.

Figure 15 is the cross-sectional view in reaming cylindrical body middle section in Figure 14.

The expanded view of reaming hurricane band in Figure 16 Figure 15.

In figure: A. reducing repairs hole device；B. explode reamer；C. eye hole-drawing device is led；1. reaming top connection；1a. top connection Radial hole；1b. top connection inner groove；2. reaming lower contact；2a. sunk screw；3. transmission detonation joint；4. loading pole；4a. spiral Slot；4b. primacord；5. loading pole lower contact；6. pressure blasting device；6a. perforated baffle；6b. striker；6c. shear pin；6d. Striker bushing；7. initiator；8. plug screw；8a. plug screw centre bore；9. propagation of explosion component；9a. propagation of explosion assembly housing；The output of 9b. propagation of explosion Pipe；9c. high explosive shell.10. reaming rifle；10a. firing mount；10b. primacord；10c. positioning disk；10d. locating plate；10e. expands Hole rifle lower contact；11. detonating primer；12. supporting positive cover；13. reaming bullet；13a. shell case；13b. reaming bullet booster explosive；13a. reaming bullet Main charge；13d. cavity liner.14. repairing hole device outer cylinder；14a. screw wing；14b. repairs hole device liquid-passing hole；14c. filter plate；15. repairing Mandrel on the device of hole；15a. repairs mandrel piston on the device of hole；15b. plane bearing；16. reset spring；16a. upper spring seat；Under 16b. Spring base；16c. repairs hole device lock pin；17. repairing hole device tapered sleeve；17a. tapered ramp；17b.T shape slot；18. radial piston；18a. diameter To piston inclined-plane；18b.T shape tenon；18c. repairs hole button alloy knife；19. repairing mandrel under the device of hole；19a. repairs mandrel piston under the device of hole； 19b. faced washer；20. thrust ball bearing one；21. replace ring；21a. transposition sliding slot；21a1. kerve；21a2. elongated slot；21a3. Short slot；22. thrust ball bearing two；23. replace collar bearing seat；24. transpositing pin；25. compensating piston；26. repairing hole device Sealing shield ring； 27. assembly pad；28. repairing hole device orifice plate connector；29. repairing hole device orifice plate；30. repairing hole device orifice plate carrier；31. throttling cone；32. support Circle；33. adjusting gasket；34. repairing hole device lower contact；35. protecting connector.36. hole-drawing device female connector；37. reaming upper cone；38. Reaming cylindrical body；39. reaming lower cone；40. hole-drawing device fluid course；41. reaming hurricane band；41a. scraper caulking groove；41b. is drawn Eye scraper；41c. reaming button alloy knife；42. leading eyeball forming head；42a. hole-drawing device hydrophthalmia；42b. hole-drawing device hydrophthalmia duct； 42c. hard alloy abrasion-resistant layer.

Specific embodiment

As shown in Figure 1, the drilling well reaming reaming hole device of the utility model, including be located at drill string the lowermost and lead eye hole-drawing device C leads and is connected with explosion reamer B above eye hole-drawing device C, is connected with reducing above the reamer B that explodes and repairs hole device A.? During drill string is gone into the well, neck eye hole-drawing device C first, which is reached, carries out reaming to the borehole wall to reaming well section, guarantees the rounding of wellbore, clearly Except the sundries being attached on the borehole wall, keep wellbore unimpeded；Then drill string continues traveling downwardly the reamer B that makes to explode and reaches scheduled position, quick-fried After fried reamer B detonation reaming, drill string, which continues traveling downwardly, makes reducing repair the well section that hole device A reaches reaming, carries out to the well section Repairing hole keeps reaming section rounding smooth；So without making a trip repeatedly, reaming, reaming and the overall process for repairing hole can be completed, significantly Improve the production efficiency of drilling well.

As shown in Figure 2 and Figure 3, the explosion reamer B of the utility model embodiment one includes the reaming top connection being mutually screwed on 1 and reaming lower contact 2, sunk screw 2a, the inner termination of sunk screw 2a are symmetrically screwed on the top circumference of reaming lower contact 2 It is respectively inserted into the annular recess of 1 periphery wall of reaming top connection, to prevent reaming top connection 1 and reaming lower contact 2 from going into the well It loosens in the process.The inner cavity top of reaming top connection 1 is equipped with reaming top connection box thread, and the lower end of reaming lower contact 2 is revolved It is connected to transmission detonation joint 3, the lower end of transmission detonation joint 3 is screwed with the loading pole 4 extended downwardly, and the top of loading pole 4 is equipped with along explosion The loading pole centre bore that rod axis extends, the lower end of loading pole 4 is screwed with loading pole lower contact 5.

The outer wall of loading pole 4 is equipped with the helicla flute 4a for extension of spiraling, and is embedded with primacord 4b, primacord 4b in helicla flute 4a Lower end be fixed in loading pole lower contact 5, the upper end of primacord 4b insertion loading pole 4 and be fixed in loading pole centre bore； The inner cavity of transmission detonation joint 3 is equipped with the propagation of explosion component 9 that can ignite primacord 4b, and the inner cavity lower part of reaming lower contact 2 is equipped with ignition The initiator 7 of propagation of explosion component 9, the inner cavity of reaming top connection 1 be equipped with can percussion primer 7 pressure blasting device 6.

Pressure blasting device 6 includes the perforated baffle 6a and striker 6b positioned at 1 inner cavity lower part of reaming top connection, perforated baffle 6a is located at the lower section of reaming top connection box thread, and striker 6b is located at the lower section of perforated baffle 6a and along the center of reaming top connection 1 Hole extends downwardly, and the periphery of striker 6b is realized by O-ring and reaming top connection centre bore to be sealed；The lower end of striker 6b, which is inserted into, to be expanded In the inner cavity of hole lower contact 2, shear pin 6c is plugged on the lower circumferential of striker 6b, the external end head of shear pin 6c is inlaid in striker In bushing 6d, the lower end of striker bushing 6d is supported on the step of reaming lower contact 2, and the upper end of striker bushing 6d is resisted against reaming Below the lower end surface of top connection 1；The upper end center of the lower end tip alignment initiator 7 of striker 6b.

The bore seal of initiator 7 is filled with detonating charge, and the upper end of initiator 7 is located at the centre bore of reaming lower contact 2 In, the lower end of initiator 7 is plugged in the counterbore of plug screw 8, and the periphery of plug screw 8 is screwed in the lower end screw hole of reaming lower contact 2, The bottom centre of plug screw 8 is equipped with plug screw centre bore 8a and connects with plug screw counterbore.

Propagation of explosion component 9 includes the propagation of explosion assembly housing 9a in transmission detonation joint centre bore, and propagation of explosion assembly housing 9a's is upper Portion is shell reduced diameter section, and the lower part of propagation of explosion assembly housing 9a is shell enlarged diameter section, and the periphery of shell reduced diameter section passes through O-shaped Circle realizes with transmission detonation joint centre bore and seals that the top of shell enlarged diameter section is resisted against on the step of transmission detonation joint centre bore, shell The lower end center of body enlarged diameter section is connected with the propagation of explosion efferent duct 9b extended downwardly, the inner cavity of propagation of explosion efferent duct 9b and propagation of explosion component The centre bore of shell 9a connects, and the lower end of propagation of explosion efferent duct 9b is inserted into 4 centre bore of loading pole, and the upper end of primacord 4b is inserted Enter in propagation of explosion efferent duct 9b；The top of propagation of explosion assembly housing centre bore is equipped with high explosive shell 9c, under high explosive shell 9c End is supported on the step of propagation of explosion assembly housing centre bore, and the inner cavity of high explosive shell 9c is equipped with high explosive, high explosive shell The both ends of 9c are by high explosive enclosure cap cap closure.

The course of work of the device is as follows: (1) first the upper end primacord 4b equipped with explosive is inserted into loading pole centre bore, Then primacord 4b is wrapped in the helicla flute 4a of loading pole 4, the lower end of primacord 4b is fixed in loading pole lower contact 5； (2) high explosive shell 9c is from the upper step hole that top is fitted into propagation of explosion assembly housing 9a, high explosive shell 9c upper and lower ends it is violent Being sealed on explosive enclosure cap cap with sealant prevents high explosive from making moist, and the small end of propagation of explosion assembly housing 9a is inserted upwardly into transmission detonation joint In 3 centre bore, shell enlarged diameter section is resisted against on the step of transmission detonation joint centre bore and is positioned；The upper end of loading pole 4 with 3 phase of transmission detonation joint is screwed on, and is inserted into the lower end of propagation of explosion efferent duct 9b in loading pole centre bore, while the upper end of primacord 4b is inserted Enter in propagation of explosion efferent duct 9b；(3) plug screw 8 is screwed in the screw hole of reaming lower contact 2 initiator 7 is fixed upwards from below, then The upper end of transmission detonation joint 3 is screwed on reaming lower contact 2 makes initiator 7 be connected with propagation of explosion component 9；(4) striker bushing 6d is sleeved on Shear pin 6c is inserted into the lower end of striker cylindrical portion in the respective pin hole of striker bushing 6d and striker 6b；By striker 6b's Upper end is inserted into the centre bore of reaming top connection 1；(5) the lower section that reaming lower contact 2 is screwed in reaming top connection 1 is made into striker again The lower end of bushing 6d is supported on the step of reaming lower contact 2, and the upper end of striker bushing 6d is resisted against the lower end of reaming top connection 1 Below face；(6) be symmetrically screwed on sunk screw 2a on the top circumference of reaming lower contact 2, and the inner termination of sunk screw 2a is inserted respectively Enter in the annular recess of 1 periphery wall of reaming top connection；(7) aperture gear is placed on the step below reaming top connection box thread Then reaming top connection 1 is screwed in the lower end of drilling rod by plate 6a；(8) under the guiding neck eye effect of loading pole lower contact 5, explosion Bar 4 is lowered with drilling rod to scheduled reaming position；(9) open slush pump and be forced into setting value, the pressure of drilling fluid to drilling rod inner cavity Power cuts shear pin 6c, striker 6b fast downlink, and the lower end tip high-speed impact initiator 7 of striker 6b is ignited generation Shock wave, shock wave are transmitted from the propagation of explosion component 9 of the plug screw centre bore 8a of 8 bottom of plug screw downwards；(10) the explosion punching of initiator 7 Hit the high explosive shell 9c of wave propagation of explosion component 9, the primacord 4b in high explosive shell blast initiation propagation of explosion efferent duct 9b, primacord The built-in high explosive of 4b, explosion velocity are up to 7800m/s, moment heavy explosion, since primacord 4b is twined in the helicla flute 4a of loading pole 4 Several weeks are wound with, the shock wave for generation of exploding causes the formation rock of this section of circle to crush and rupture in rock of borehole, To achieve the effect that reaming；(11) slush pump is opened to operational discharge capacity, landwaste caused by explosion reaming is carried out into ground；⑿ Hole diameter is detected by cable tripping in caliper logging tool, judges whether to meet scheduled reaming requirement.

The center bore inner wall of reaming top connection 1 is equipped with top connection inner groove 1b, and top connection inner groove 1b is looped around striker 6b Top periphery, be symmetrically arranged with top connection radial hole 1a and top connection inner groove 1b in reaming top connection 1 and connect.Striker When 6b is in non-unlocked state, drilling fluid, that is, mud of drilling rod inner cavity is sealed up by the O-ring of the periphery striker 6b；When slush pump plus When being depressed into setting value, shear pin 6c is cut, striker 6b fast downlink percussion primer 7, and top connection radial hole 1a exposes at this time, The drilling fluid of drilling rod inner cavity is flowed out from top connection inner groove 1b and top connection radial hole 1a, and violent wave occurs in the pressure of slush pump Dynamic, construction personnel learns that explosion reaming has been realized in underground by the fluctuation of mud pump pressure on well.

The crust of primacord 4b is special plastic, and built-in high explosive is a kind of high explosion velocity primacord, and explosion velocity is up to 7800m/ s；The high explosive can be applied to downhole temperature no more than 160 DEG C, and down-hole pressure is no more than 70MPa, and the underground construction time does not surpass It crosses in the environment of 48h；High explosive performance in high explosive shell 9c is same.

As shown in Figures 4 to 6, the explosion reamer B of the utility model embodiment two includes connecing in the reaming being mutually screwed on First 1 and reaming lower contact 2, the inner cavity top of reaming top connection 1 is equipped with reaming top connection box thread, the lower end of reaming lower contact 2 It is screwed with transmission detonation joint 3, the lower end of transmission detonation joint 3 is screwed with the reaming rifle 10 extended downwardly, and the lower end of reaming rifle 10 is screwed with The lower end of reaming rifle lower contact 10e, reaming rifle lower contact 10e are equipped with the lower contact of reaming rifle；Uniformly divide on the gun barrel of reaming rifle 10 Be furnished with multiple blind holes, 10 lumen centers of reaming rifle are equipped with firing mount 10a, be evenly distributed on firing mount 10a with it is blind on reaming rifle 10 Hole corresponds and the reaming bullet 13 of coaxial line, and the center of firing mount 10a is equipped with the primacord 10b for igniting each reaming bullet 13, leads quick-fried The lower end of rope 10b is fixed on the lower end of firing mount 10a, and the upper end of primacord 10b is inserted into the centre bore of transmission detonation joint 3；Propagation of explosion connects First 3 inner cavity is equipped with the detonating primer 11 that can ignite primacord 10b, and the inner cavity lower part of reaming lower contact 2 is equipped with ignition detonating primer 11 initiator 7, the inner cavity of reaming top connection 1 be equipped with can percussion primer 7 pressure blasting device 6.

Pressure blasting device 6 includes the perforated baffle 6a and striker 6b positioned at 1 inner cavity lower part of reaming top connection, perforated baffle 6a is located at the lower section of reaming top connection box thread, and striker 6b is located at the lower section of perforated baffle 6a and along the center of reaming top connection 1 Hole extends downwardly, and the periphery of striker 6b is realized by O-ring and reaming top connection centre bore to be sealed；The lower end of striker 6b, which is inserted into, to be expanded In the inner cavity of hole lower contact 2, shear pin 6c is plugged on the lower circumferential of striker 6b, the external end head of shear pin 6c is inlaid in striker In bushing 6d, the lower end of striker bushing 6d is supported on the step of reaming lower contact 2, and the upper end of striker bushing 6d is resisted against reaming Below the lower end surface of top connection 1；The upper end center of the lower end tip alignment initiator 7 of striker 6b.

Striker 6b is fixed in striker bushing 6d and the centre bore of reaming top connection 1 by shear pin 6c, striker bushing 6d quilt Be fixed between the lower end surface of reaming top connection 1 and the interior step of reaming lower contact 2, prevent striker 6b during going into the well due to Gravity moves down；Shear pin 6c has certain intensity in order to avoid damaging in the vibration of pipe string, and can be in the shearing pressure of design It is reliably cut under power.When slush pump is forced into setting value to drilling rod inner cavity, shear pin 6c is cut, striker 6b fast downlink, The lower end tip high-speed impact initiator 7 of striker 6b, which is ignited, generates shock wave.

The bore seal of initiator 7 is filled with detonating charge, and the upper end of initiator 7 is located at the centre bore of reaming lower contact 2 In, the lower end of initiator 7 is plugged in the counterbore of plug screw 8, and the periphery of plug screw 8 is screwed in the lower end screw hole of reaming lower contact 2, The bottom centre of plug screw 8 is equipped with plug screw centre bore 8a and connects with plug screw counterbore.Plug screw 8 is screwed under reaming upwards from below and connects It is in first 2 screw hole that initiator 7 is fixed, initiator 7 be under pressure priming device 6 striker 6b hit after ignite, shock wave from The detonating primer 11 of the plug screw centre bore 8a of 8 bottom of plug screw downwards transmits.

The center bore inner wall of reaming top connection 1 is equipped with reaming top connection inner groove 1b, and reaming top connection inner groove 1b is surround It is symmetrically arranged in the top periphery of striker 6b, reaming top connection 1 in reaming top connection radial hole 1a and reaming top connection Annular groove 1b connects.When striker 6b is in non-unlocked state, drilling fluid, that is, mud of drilling rod inner cavity is by the O-ring of the periphery striker 6b It seals up；When slush pump is forced into setting value, shear pin 6c is cut, and striker 6b fast downlink percussion primer 7 expands at this time Hole top connection radial hole 1a exposes, and the drilling fluid of drilling rod inner cavity is from reaming top connection inner groove 1b and reaming top connection radial hole 1a There are big ups and downs in outflow, the pressure of slush pump, and construction personnel learns that underground is real by the fluctuation of mud pump pressure on well It now explodes reaming.

Sunk screw 2a is symmetrically screwed on the top circumference of reaming lower contact 2, the inner termination of sunk screw 2a is inserted respectively Enter in the annular recess of 1 periphery wall of reaming top connection.Sunk screw 2a can prevent reaming top connection 1 and reaming lower contact 2 It is loosened during going into the well.

The inner cavity of transmission detonation joint 3 is equipped with supporting positive cover 12, and the centre bore top of supporting positive cover 12 is equipped with detonating primer 11, supporting positive cover 12 centre bore presents small lower big structure, and the centre bore of the upper end insertion supporting positive cover 12 of primacord 10b is connected with detonating primer 11.It helps The centre bore of positive set 12 presents small lower big structure, convenient for the insertion of primacord 10b；The structure of detonating primer 11 is simpler, so that Propagation of explosion component it is easier for installation quick.

Reaming bullet 13 includes shell case 13a, and the inner termination that shell case 13a is directed toward reaming gun axis line is in truncated cone, shell case 13a's Inner termination is equipped with shell case propagation of explosion centre bore, is filled with reaming bullet booster explosive 13b, the inner cavity of shell case 13a in shell case propagation of explosion centre bore Equipped with cavity liner 13d, cavity liner 13d be taper and with shell case 13a coaxial line, cavity liner 13d is that the vertex of a cone is perpendicularly oriented to reaming rifle 10 axis is filled with reaming bullet main charge 13a between cavity liner 13d and the inner wall of shell case 13a, reaming bullet main charge 13a's The vertex of a cone is connected to each other with reaming bullet booster explosive 13b.Primacord 10b ignites reaming bullet booster explosive 13b, and reaming bullet booster explosive 13b will Reaming bullet main charge 13a ignites, and cavity liner 13d is blown, and the shock wave for generation of exploding blows the blind hole on reaming rifle 10, and And act in rock of borehole, realize the purpose of reaming.

The upper and lower ends of firing mount 10a are separately fixed at the center of positioning disk 10c, and the periphery of positioning disk 10c is respectively at reaming The gun barrel inner wall clearance fit of rifle 10, the upper and lower ends of reaming rifle inner wall, which are respectively equipped with, carries out axially position to positioning disk 10c Hole retaining ring is fixed with locating plate 10d, the external end head difference of locating plate 10d by screw respectively on the outer end face of positioning disk 10c In the inboard wall groove of reaming rifle 10.The positioning disk 10c of upper and lower ends ensures firing mount 10a and 10 coaxial line of reaming rifle, Kong Yong Retaining ring carries out axially position to firing mount 10a, and locating plate 10d carries out radial positioning to firing mount 10a, it is ensured that each reaming bullet 13 and rifle Corresponding blind hole coaxial line on pipe, so that explosion wave plays maximum reaming effect.

120 blind holes are equipped with for every meter on the gun barrel of reaming rifle 10, and multi-head spiral line of each blind hole along gun barrel surface uniformly divides Cloth, number of phases of the blind hole on gun barrel are 18, and the phase angle between two neighboring blind hole on same cross section is 140 °.Rifle It is close using superelevation hole on pipe, it ensure that penetration depth and piercing aperture；Blind hole and reaming bullet 13 are distributed along multi-head spiral line, adjacent Phase angle between two blind holes is 140 °, solves the problems, such as charge interference.

The cone-apex angle of cavity liner 13d is 38 ° ~ 52 °, and the wall thickness of cavity liner 13d is 0.10e ~ 3mm；Shell case propagation of explosion centre bore Diameter be Φ 2.5mm ~ Φ 5mm, length be 20mm ~ 30mm.

Under the guiding neck eye effect of reaming rifle lower contact 10e, reaming rifle 10 is lowered with drilling rod to scheduled reaming position It sets, is then turned on slush pump and pressurizes to drilling rod inner cavity, the pressure of drilling fluid unlocks pressure blasting device 6, hits rising for lower section Quick-fried device 7, the shock wave initiation detonating primer 11 and primacord 10b that initiator 7 exports, the built-in insensitiveness high explosive of primacord 10b, explosion velocity Up to 7800m/s, each 13 heavy explosion of reaming bullet in moment reaming rifle 10, the blind hole on reaming rifle 10 are blown, and explosion produces Raw shock wave causes the formation rock of this section of circle to crush and rupture, to reach reaming in rock of borehole Effect.

As shown in Fig. 7 to Figure 13, it includes repairing hole device outer cylinder 14 that reducing, which repairs hole device A, and the upper end for repairing hole device outer cylinder 14 is equipped with Taper box thread, the middle part for repairing 14 short transverse of hole device outer cylinder is reducer, and the inner cavity for repairing hole device outer cylinder 14 is equipped with and repairs hole device Outer cylinder coaxial line repairs mandrel 15 on the device of hole, and the reducer outer wall uniform winding for repairing hole device outer cylinder 14 has three screw wing 14a, often It is uniformly distributed on screw wing 14a there are five screw wing radial hole, is respectively equipped with radial piston 18 in each screw wing radial hole, respectively The outer end face of radial piston 18 be uniformly embedded with it is multiple repair hole button alloy knife 18c, the inner termination difference of each radial piston 18 Equipped with radial piston inclined-plane 18a, the radial piston inclined-plane 18a of three radial pistons 18 is born against on the same circumference On the same tapered ramp 17a for repairing 17 periphery of hole device tapered sleeve, respectively repairs hole device tapered sleeve 17 and be successively sleeved on and repair mandrel 15 on the device of hole Periphery, respectively repair that three tapered ramp 17a on hole device tapered sleeve 17 are centrosymmetric setting and lower end is inclined to axis direction respectively Tiltedly；It repairs and is respectively equipped with T-slot 17b on the tapered ramp 17a of hole device tapered sleeve 17, on the radial piston inclined-plane 18a of radial piston 18 Being respectively equipped with can be embedded in respectively in corresponding T-slot 17b along T shape tenon 18b, the T shape tenon 18b that T-slot 17b is slided.

The upper end for repairing mandrel 15 on the device of hole, which is equipped with, repairs mandrel piston 15a on the device of hole, repairs the periphery of mandrel piston 15a on the device of hole Sealing is supported on the inner wall for repairing hole device outer cylinder 14, and the bottom surface for repairing mandrel piston 15a on the device of hole is equipped with plane bearing 15b, plane axis The lower section for holding 15b is equipped with upper spring seat 16a, and the lower section of upper spring seat 16a is equipped with reset spring 16, the lower end branch of reset spring 16 On lower spring cup 16b, lower spring cup 16b is fixed on repairing hole device outer cylinder 14 by repairing hole device lock pin 16c for support.It repairs on the device of hole The top of mandrel 15 be screwed with protection connector 35d, protect connector 35d outer wall and repair hole device outer cylinder 14 inner wall between there are Gap, the top of protection connector 35d are equipped with horn mouth and communicate with the centre bore for repairing mandrel 15 on the device of hole, protect at the top of connector 35d Mud can smoothly be imported the inner cavity for repairing mandrel 15 on the device of hole by horn mouth.

The lower end for repairing mandrel 15 on the device of hole, which is screwed with, repairs mandrel 19 under the device of hole, and the top for repairing mandrel 19 under the device of hole, which is equipped with, repairs hole Mandrel piston 19a under device repairs mandrel piston 19a under the device of hole and is resisted against the lower end surface lower section that bottommost repairs hole device tapered sleeve 17, repairs hole The subjacent of mandrel piston 19a is equipped with faced washer 19b under device, and the lower end surface of faced washer 19b is supported on band self-aligning seat washer Thrust ball bearing 1 on, the lower section of thrust ball bearing 1 is equipped with unidirectional rotatable transposition ring 21, replaces under ring 21 End face is supported on the thrust ball bearing 2 22 with self-aligning seat washer, and thrust ball bearing 2 22 is supported on transposition collar bearing seat 23, Transposition collar bearing seat 23, which is fixed by screws in, to be repaired under the device of hole on the circumference of mandrel 19；The periphery wall of transposition ring 21 is symmetrically arranged with three Transposition the sliding slot 21a, three groups of transposition sliding slot 21a that group is recessed inwardly form end to end circulation knot in the periphery of transposition ring 21 Structure；The lower part screw wing 14a for repairing hole device outer cylinder 14 is screwed with the transpositing pin 24 radially extended, the inner termination of transpositing pin 24 respectively It is inserted in corresponding transposition sliding slot 21a respectively.

As shown in Figure 11 to Figure 13, transposition sliding slot 21a include the kerve 21a1 being sequentially connected by skewed slot, elongated slot 21a2, Kerve 21a1 and short slot 21a3, each kerve 21a1 are respectively positioned on the sustained height below skewed slot, each elongated slot 21a2 and short slot 21a3 It is respectively positioned on the top of skewed slot, the top of each elongated slot 21a2 extends to the top of transposition 21 short transverse of ring, each short slot vertically upward The top of 21a3 is located at the middle part of transposition 21 short transverse of ring；Skewed slot successively links up kerve 21a1, elongated slot 21a2, bottom in fold-line-shaped Slot 21a1, short slot 21a3, kerve 21a1, elongated slot 21a2 simultaneously form circulation on the circumference of transposition ring 21.

It is respectively uniformly distributed on three screw wing 14a there are five radial piston 18, is in equilateral triangle on each cross section There are three radial pistons 18 for distribution；Due on radial piston inclined-plane 18a T shape tenon 18b with repair the tapered ramp of hole device tapered sleeve 17 T-slot 17b on 17a is matched, so that radial piston inclined-plane 18a is affixed with the tapered ramp 17a for repairing hole device tapered sleeve 17 always It closes.It repairs mandrel 19 under the device of hole and follows and repair mandrel 15 on the device of hole and respectively repair 17 synchronization lifting of hole device tapered sleeve, since transpositing pin 24 is fixed Motionless on repairing hole device outer cylinder 14, the inner termination of transpositing pin 24 is stuck in transposition sliding slot 21a, when transposition ring 21 is bored with hole device is respectively repaired When 17 lifting of set, single direction rotation is carried out under the guiding of transposition sliding slot 21a, thrust ball bearing 1 and thrust ball bearing 2 22 can To guarantee that transposition ring 21 rotates flexibly, cooperation position of the transpositing pin 24 in transposition sliding slot 21a determines that repairing hole device tapered sleeve 17 exists The position of short transverse, to accurately control the stretching state of radial piston 18.

When slush pump is opened, the pressure of mud, which acts on, is repaired on the device of hole on mandrel piston 15a, is repaired mandrel 15 on the device of hole and is overcome 17 downlink of hole device tapered sleeve is respectively repaired in the tension downlink of reset spring 16, drive, and transpositing pin 24 is slided to the top of elongated slot 21a2, at this time The top for respectively repairing the tapered ramp 17a of hole device tapered sleeve 17 and the radial piston inclined-plane 18a of each radial piston 18 fit, so that respectively Radial piston 18 is protruding, and radial piston 18 is stretching state at this time.

When slush pump termination of pumping, the inside and outside differential pressure of tool is balanced, and mandrel 15 on the device of hole is repaired in the tension promotion of reset spring 16 Uplink resets, at this time transpositing pin 24 slide respectively repaired to the bottom of kerve 21a1 the lower part of the tapered ramp 17a of hole device tapered sleeve 17 with The radial piston inclined-plane 18a of each radial piston 18 fits, so that the outer end face of each radial piston 18 is lower than than screw wing 14a's Surface, radial piston 18 is free state at this time.

When slush pump is again turned on, the tension downlink that mandrel 15 on the device of hole overcomes reset spring 16 again is repaired, is driven each 17 downlink of hole device tapered sleeve is repaired, transpositing pin 24 slides the tapered ramp 17a that hole device tapered sleeve 17 is respectively repaired to the top of short slot 21a3 at this time Middle part and the radial piston inclined-plane 18a of each radial piston 18 fit so that the outer end face and screw wing of each radial piston 18 The flush of 14a, radial piston 18 is concordant state at this time.

It replaces and is equipped with compensating piston 25 below collar bearing seat 23, compensating piston 25, which is located at, to be repaired the inner wall of hole device outer cylinder 14 and repair Under the device of hole between the outer wall of mandrel 19, and the internal perisporium of compensating piston 25 and periphery wall are realized by sealing element and are sealed；It is located at The circumference for repairing hole device outer cylinder 14 of 25 lower section of compensating piston, which is equipped with, repairs hole device liquid-passing hole 14b, repairs and installs in the device liquid-passing hole 14b of hole There is filter plate 14c；The lower section for repairing hole device liquid-passing hole 14b, which is equipped with, repairs hole device Sealing shield ring 26, repairs hole device Sealing shield ring 26 and passes through spiral shell It follows closely and repairs hole device outer cylinder 14 and be fixedly connected, repair hole device Sealing shield ring 26 and be located at the inner wall for repairing hole device outer cylinder 14 and repair mandrel under the device of hole Between 19 outer wall, and the internal perisporium and periphery wall of repairing hole device Sealing shield ring 26 are by sealing element realization sealing.When repairing hole device When upper mandrel piston 15a declines, repairs 15 periphery of mandrel and the mud repaired between hole device outer cylinder 14 on the device of hole and push compensating piston 25 Decline, mud are discharged from hole device liquid-passing hole 14b is repaired；When repairing on the device of hole mandrel piston 15a and rising, mud is from repairing hole device liquid-passing hole 14b fills into the cavity of resorption of compensating piston 25, and filter plate 14c can prevent landwaste from entering and repair 14 inner cavity of hole device outer cylinder.

The lower section for repairing hole device Sealing shield ring 26 is equipped with assembly pad 27, and the lower section of assembly pad 27, which is equipped with, repairs hole device orifice plate connector 28, it repairs hole device orifice plate connector 28 and is screwed in the lower end for repairing mandrel 19 under the device of hole, the lower section for repairing hole device orifice plate connector 28, which is equipped with, repairs hole Device orifice plate 29, the lower end surface for repairing hole device orifice plate 29 are resisted against on the inner hole step for repairing hole device orifice plate carrier 30, repair hole device orifice plate carrier 30 Upper end be screwed in the lower end periphery for repairing hole device orifice plate connector 28；The centre bore lower end of hole device orifice plate carrier 30 is repaired equipped with up-small and down-big Repair hole device orifice plate carrier horn mouth；The throttling cone 31 that line coaxially therewith is inserted in the device orifice plate carrier horn mouth of hole is repaired, throttling cone 31 Support spoke is connected on throttling cone seat circle, is realized and is sealed between the outer wall for the cone seat circle that throttles and the inner wall for repairing hole device outer cylinder 14, The lower end surface of throttling cone seat circle is supported on bracing ring 32, and the lower end surface of bracing ring 32 is supported on by adjusting gasket 33 repairs hole device The top of lower contact 34 repairs hole device lower contact 34 and is screwed in the lower end for repairing hole device outer cylinder 14.

It repairs the centre bore of hole device orifice plate 29, the centre bore for repairing hole device orifice plate carrier 30, repair hole device orifice plate carrier horn mouth and throttling Cone 31 constitutes throttling and pressure signal generating device is commonly called as Shi Wei mechanism, and when radial piston 18 is fully extended, mud, which flows through, shows position Mechanism can generate the pressure difference of 1.04~1.73Mpa, can be determined that well whether ground observation standpipe pressure table this pressure difference occurs Under variable diameter state.Only when radial piston 18 stretches out, it can just generate pump pressure increase signal and show position when piston does not stretch out Pressure difference at mechanism can be ignored.The thickness of increase and decrease adjustment gasket 33 adjusts throttling cone 31 and is repairing hole device orifice plate carrier horn mouth In insertion depth control choke pressure.

As shown in Figure 14 to Figure 16, neck eye hole-drawing device C includes reaming drill string, and reaming drill string includes successively being linked as from top to bottom The hole-drawing device female connector 36 of one and coaxial line, reaming upper cone 37, reaming cylindrical body 38 and reaming lower cone 39, reaming epicone Body 37 is up-small and down-big structure, and reaming lower cone 39 is up big and down small structure, and the inner cavity of hole-drawing device female connector 36 is equipped with and drilling rod The box thread being screwed on, the lower end of box thread be equipped with reaming drill string coaxial line and the hole-drawing device fluid course 40 that extends downwardly, draw The periphery of eye upper cone 37, reaming cylindrical body 38 and reaming lower cone 39 is evenly distributed with the reaming spiral shell that multiple tracks has one fixed width Revolve band 41.Angle between the bus and reaming drillstring axis of reaming upper cone 37 is 10 °, the bus of reaming lower cone 39 with draw Angle between eye drillstring axis is 7 °.41 preferred distribution of reaming hurricane band has five, and the top surface of per pass reaming hurricane band 41 is wide Degree is 46mm.The helix angle of reaming hurricane band 41 is 70 °, lead 1734.04mm.

The rotation direction of each reaming hurricane band 41 is dextrorotation, is respectively equipped with scraper caulking groove on the right side of the top surface of each reaming hurricane band 41 The width of 41a, scraper caulking groove 41a are 6mm, and reaming scraper 41b is inlaid in respectively in corresponding scraper caulking groove 41a.Each reaming spiral shell It revolves and is evenly distributed with multiple circular counter bores on the top surface of band 41, the aperture of circular counter bore is preferably 10.5mm.In each circular counter bore It is embedded with reaming button alloy knife 41c respectively, the cutting face of each reaming button alloy knife 41c is to the right and the knife edge and reaming hurricane band 41 either flush.Two rows, two rows of reaming button alloys are distributed with along the top surface of reaming hurricane band 41 in reaming button alloy knife 41c Knife 41c staggers successively arrangement, and the center of adjacent reaming button alloy knife 41c is away from for 16mm in every row.

The bottom of reaming lower cone 39 is connected with neck eyeball forming head 42, and the bottom of neck eyeball forming head 42 is equipped with multiple hole-drawing devices Hydrophthalmia 42a, each hole-drawing device hydrophthalmia 42a pass through hole-drawing device hydrophthalmia duct 42b respectively and communicate with hole-drawing device fluid course 40.Lead eyeball The outer surface of forming head 42 can be covered with hard alloy abrasion-resistant layer 42c.The radius for leading eyeball forming head 42 is 56mm, hole-drawing device hydrophthalmia There are four 42a is set in the bottom of neck eyeball forming head 42, the center of four hole-drawing device hydrophthalmias is located at neck eyeball forming head 42 On four quadrantal points, wherein the first hole-drawing device hydrophthalmia is distributed on the circumference that diameter is 45mm, second, third hole-drawing device hydrophthalmia point Cloth is on the circumference that diameter is 65mm, and the 4th hole-drawing device hydrophthalmia is distributed on the circumference that diameter is 85mm, each hole-drawing device hydrophthalmia Aperture is respectively 18mm, and the axis of each hole-drawing device hydrophthalmia duct 42b and the angle of 40 axis of hole-drawing device fluid course be 15 °~ 25°。

In well when reaming, the lowermost leads eyeball forming head 42 to be in wellbore middle always, and avoid wedging stratum can Energy；Reaming is inlaid on the reaming hurricane band 41 of reaming upper cone 37, reaming cylindrical body 38 and the winding of 39 periphery of reaming lower cone Scraper 41b, removing the borehole wall when rotated keeps wellbore unblocked, avoids and is marked newly while improving the effect of neck eye, reaming The risk of eye.Turntable reaming can be continuously opened, bit pressure can suitably amplify.Reaming hurricane band 41 is located at the portion of 39 periphery of reaming lower cone Tactical diameter is smaller more down for position, convenient for neck eye and reaming；The position that reaming hurricane band 41 is located at 38 periphery of reaming cylindrical body is straight Diameter is maximum, can play the role of righting；The position that reaming hurricane band 41 is located at 37 periphery of reaming upper cone is up-small and down-big, is convenient for Reaming tool is above mentioned with drill string is smooth.The reaming scraper 41b inlayed on reaming hurricane band 41 is strong to borehole wall lateral force ability to bear, It is obvious to the shear action of the borehole wall.

Neck eyeball forming head 42 be in wellbore middle position, will not wedging stratum, the rock in wellbore middle can only be ground Bits, constantly wash away wellbore, play the role of leading eye, avoid and mark new wellbore；Neck eye can be improved in hard alloy abrasion-resistant layer 42c The hardness and wear-resisting property of ballhead 42, avoid its premature abrasion.

The tool during fabrication, using diameter 214mm drill string idiosome, using the helix angle of five 46mm wide of lathe Che Chu For 70 °, lead 1734.04mm right hand helix band structure, go out the deep groove of 6mm wide, 6.5mm from right edge 3mm vehicle on hurricane band, Cutting face is inlayed towards right Y116 alloy cutter head as reaming scraper 41b.10mm and 15mm is on the left of distance on every hurricane band The center of circle distributing line of circular counter bore, two rows of centers of circle go out two rows of totally 24 φ 10.5mm, depth 11.5mm circle at a distance of 16mm difference vehicle Counterbore inlays cutting face towards right T110 alloy cutter head as reaming button alloy knife 41c.

The hemispherical dome structure that top vehicle is 56mm at radius, using front end as the center of circle on spherical surface, respectively in φ 85mm vehicle A φ 18mm hole-drawing device hydrophthalmia, φ 65mm vehicle go out two adjacent φ 18mm hole-drawing device hydrophthalmias, φ 45mm vehicles and go out a φ out 18mm hole-drawing device hydrophthalmia；Spherical surface built-up welding φ 5-6.5mmYD alloy electrode to spherical diameter is 125-130mm, as hard alloy Wearing layer 42c.

When wellbore roundness is poor, the lower section which can individually be screwed in drill string carries out high-intensitive draw Eye, mud flow downward along hole-drawing device fluid course 40, spray from the hole-drawing device hydrophthalmia of neck 42 bottom of eyeball forming head, clean well Eye, clast are taken out of with mud；Four hole-drawing device hydrophthalmias are distributed on four quadrants, it is ensured that all directions have water flow punching Brush, four hole-drawing device hydrophthalmias are distributed from the near to the distant relative to the axis of neck eyeball forming head 42, are conducive to increase and are washed away area.Due to The presence of tapered hurricane band, the hole-drawing device fluid course 40 between adjoining spiral band is larger, and point diameter is gradually reduced in addition, drop The low occurrence probability for suppressing pump.

Claims (10)

1. a kind of drilling well reaming reaming hole device, including be located at drill string the lowermost and lead eye hole-drawing device, it is characterised in that: the neck eye It is connected with explosion reamer above hole-drawing device, is connected with reducing above the explosion reamer and repairs hole device；The neck eye Hole-drawing device includes reaming drill string, and the reaming drill string includes successively being linked together from top to bottom and the hole-drawing device mother of coaxial line connects Head, reaming upper cone, reaming cylindrical body and reaming lower cone, the reaming upper cone is up-small and down-big structure, under the reaming Cone is up big and down small structure, and the inner cavity of the hole-drawing device female connector is equipped with the box thread being screwed on drilling rod, the box thread Lower end is equipped with and reaming drill string coaxial line and the hole-drawing device fluid course that extends downwardly, the reaming upper cone, reaming cylindrical body The reaming hurricane band that multiple tracks has one fixed width, the rotation of each reaming hurricane band are evenly distributed with the periphery of reaming lower cone It is respectively equipped with the scraper caulking groove extended along reaming hurricane band to the top surface right side for dextrorotation, each reaming hurricane band, it is each described Reaming scraper is embedded in scraper caulking groove respectively；The bottom of the reaming lower cone is connected with neck eyeball forming head, the neck eyeball The bottom of forming head is equipped with multiple hole-drawing device hydrophthalmias, and each hole-drawing device hydrophthalmia passes through hole-drawing device hydrophthalmia duct and the reaming respectively Device fluid course communicates.

2. drilling well reaming reaming hole device according to claim 1, it is characterised in that: the explosion reamer includes mutually rotation The reaming top connection and reaming lower contact connect, the inner cavity top of the reaming top connection is equipped with reaming top connection box thread, described The lower end of reaming lower contact is screwed with transmission detonation joint, and the lower end of the transmission detonation joint is screwed with the loading pole extended downwardly, described The top of loading pole is equipped with the loading pole centre bore extended along explosion rod axis, and the lower end of the loading pole is screwed under loading pole Connector；The outer wall of the loading pole is equipped with the helicla flute for extension of spiraling, and is embedded with primacord, the primacord in the helicla flute Lower end be fixed in the loading pole lower contact, the upper end of primacord insertion loading pole and be fixed in the loading pole In heart hole；The inner cavity of the transmission detonation joint is equipped with the propagation of explosion component that can ignite primacord, the inner cavity lower part of the reaming lower contact The initiator for igniting the propagation of explosion component is installed, the inner cavity of the reaming top connection is equipped with the pressure that can hit the initiator Power priming device.

3. drilling well reaming reaming hole device according to claim 1, it is characterised in that: the explosion reamer includes mutually rotation The reaming top connection and reaming lower contact connect, the lower end of the reaming lower contact are screwed with transmission detonation joint, the transmission detonation joint Lower end is screwed with the reaming rifle extended downwardly, and the lower end of the reaming rifle is screwed with reaming rifle lower contact, connects under the reaming rifle The lower end of head is equipped with the lower contact of reaming rifle；Multiple blind holes, reaming rifle inner cavity are evenly distributed on the gun barrel of the reaming rifle Center is equipped with firing mount, and the reaming with blind hole one-to-one correspondence and coaxial line on the reaming rifle is evenly distributed on the firing mount Bullet, the center of the firing mount are equipped with the primacord for igniting each reaming bullet, and the lower end of the primacord is fixed under the firing mount End, the upper end of the primacord is inserted into the centre bore of the transmission detonation joint；The inner cavity of the transmission detonation joint is equipped with to ignite and lead The detonating primer of quick-fried rope, the inner cavity lower part of the reaming lower contact are equipped with the initiator for igniting the detonating primer, in the reaming The inner cavity of connector is equipped with the pressure blasting device that can hit the initiator.

4. drilling well reaming reaming hole device according to claim 2 or 3, it is characterised in that: the pressure blasting device includes Perforated baffle and striker positioned at reaming top connection inner cavity lower part, the perforated baffle are located at reaming top connection box thread Lower section, the striker is located at the lower section of the perforated baffle and extends downwardly along the centre bore of the reaming top connection, described to hit It is realized and is sealed by O-ring and the reaming top connection centre bore in the periphery of needle；The lower end of the striker is inserted under the reaming In the inner cavity of connector, shear pin is plugged on the lower circumferential of the striker, the external end head of the shear pin is inlaid in striker lining In set, the lower end of the striker bushing is supported on the step of the reaming lower contact, and the upper end of the striker bushing is resisted against Below the lower end surface of the reaming top connection；The lower end tip of the striker is directed at the upper end center of the initiator.

5. drilling well reaming reaming hole device according to claim 2 or 3, it is characterised in that: the bore seal of the initiator Filled with detonating charge, the upper end of the initiator is located in the centre bore of the reaming lower contact, the lower end of the initiator It is plugged in the counterbore of plug screw, the periphery of the plug screw is screwed in the lower end screw hole of the reaming lower contact, the plug screw Bottom centre is equipped with plug screw centre bore and connects with the plug screw counterbore.

6. drilling well reaming reaming hole device according to claim 2 or 3, it is characterised in that: the center of the reaming top connection Hole inner wall is equipped with reaming top connection inner groove, and the reaming top connection inner groove is looped around the top periphery of the striker, Reaming top connection radial hole is symmetrically arranged in the reaming top connection to connect with the reaming top connection inner groove.

7. drilling well reaming reaming hole device according to claim 2, it is characterised in that: the propagation of explosion component includes positioned at described Propagation of explosion assembly housing in transmission detonation joint centre bore, the top of the propagation of explosion assembly housing are shell reduced diameter section, the propagation of explosion The lower part of assembly housing is shell enlarged diameter section, and the periphery of the shell reduced diameter section passes through in O-ring and the transmission detonation joint Sealing is realized in heart hole, and the top of the shell enlarged diameter section is resisted against on the step of the transmission detonation joint centre bore, the shell The lower end center of enlarged diameter section is connected with the propagation of explosion efferent duct extended downwardly, the inner cavity of the propagation of explosion efferent duct and the propagation of explosion group The centre bore of part shell connects, and the lower end of the propagation of explosion efferent duct is inserted into the loading pole centre bore, the primacord Upper end be inserted into the propagation of explosion efferent duct；The top of the propagation of explosion assembly housing centre bore is equipped with high explosive shell, described The lower end of high explosive shell is supported on the step of propagation of explosion assembly housing centre bore, and the inner cavity of the high explosive shell is equipped with suddenly Explosive, the both ends of the high explosive shell are by high explosive enclosure cap cap closure.

8. drilling well reaming reaming hole device according to claim 3, it is characterised in that: the reaming bullet includes shell case, described The inner termination that shell case is directed toward reaming gun axis line is in truncated cone, and the inner termination of the shell case is equipped with shell case propagation of explosion centre bore, described Reaming bullet booster explosive is filled in shell case propagation of explosion centre bore, the inner cavity of the shell case is equipped with cavity liner, and the cavity liner is taper And with the shell case coaxial line, the cavity liner is that the vertex of a cone is perpendicularly oriented to the axis of reaming rifle, the cavity liner and the shell case Inner wall between be filled with reaming bullet main charge, the vertex of a cone of the reaming bullet main charge is connected to each other with the reaming bullet booster explosive.

9. drilling well reaming reaming hole device according to claim 1, it is characterised in that: it includes repairing hole that the reducing, which repairs hole device, Device outer cylinder, the upper end for repairing hole device outer cylinder are equipped with taper box thread, and the middle part for repairing hole device outer cylinder short transverse is variable diameter Section, the inner cavity for repairing hole device outer cylinder are equipped with and the mandrel on the device of hole of repairing of repairing hole device outer cylinder coaxial line, the hole device outer cylinder of repairing Reducer outer wall uniform winding has three screw wings, is uniformly distributed on every screw wing there are five screw wing radial hole, each spiral Radial piston is respectively equipped in wing radial hole, the inner termination of each radial piston is respectively equipped with radial piston inclined-plane, is located at same The radial piston inclined-plane of three radial pistons is born against on the same tapered ramp for repairing hole device tapered sleeve periphery on a circumference, Each hole device tapered sleeve of repairing successively is sleeved on the periphery for repairing mandrel on the device of hole, each three wedge shapes repaired on the device tapered sleeve of hole Be centrosymmetric setting and lower end of inclined-plane is tilted to axis direction respectively；It is respectively equipped on the tapered ramp for repairing hole device tapered sleeve T-slot is respectively equipped with the T shape tenon that can be slided along the T-slot, the T shape tenon on the radial piston inclined-plane of the radial piston Respectively in corresponding T-slot；The upper end for repairing mandrel on the device of hole is equipped with and repairs mandrel piston on the device of hole, described to repair on the device of hole The periphery sealing of mandrel piston is supported on the inner wall for repairing hole device outer cylinder, and the bottom surface for repairing mandrel piston on the device of hole is equipped with flat Spherical bearing, the lower section of the plane bearing are equipped with upper spring seat, and the lower section of the upper spring seat is equipped with reset spring, the reset The lower end of spring is supported on lower spring cup, and the lower spring cup is fixed on by repairing hole device lock pin and repairs hole device outer cylinder described On.

10. drilling well reaming reaming hole device according to claim 9, it is characterised in that: the lower end for repairing mandrel on the device of hole It is screwed with and repairs mandrel under the device of hole, the top for repairing mandrel under the device of hole is equipped with and repairs mandrel piston under the device of hole, described to repair core under the device of hole Axis piston is resisted against bottommost and repairs below the lower end surface of hole device tapered sleeve, and the subjacent for repairing mandrel piston under the device of hole is equipped with flat Face washer, the lower end surface of the faced washer are supported on the thrust ball bearing one with self-aligning seat washer, the thrust ball bearing one Lower section be equipped with unidirectional rotatable transposition ring, it is described transposition ring lower end surface be supported on the thrust ball bearing two with self-aligning seat washer On, the thrust ball bearing two is supported on transposition collar bearing seat, and the transposition collar bearing seat is fixed by screws in described repair Under the device of hole on the circumference of mandrel；The periphery wall of the transposition ring is symmetrically arranged with three groups of transposition sliding slots being recessed inwardly, three groups of transpositions Sliding slot forms end to end loop structure in the periphery of the transposition ring；The spiral underwing for repairing hole device outer cylinder revolves respectively It is connected to the transpositing pin radially extended, the inner termination of the transpositing pin is inserted in respectively in corresponding transposition sliding slot；The transposition Sliding slot includes the kerve being sequentially connected by skewed slot, elongated slot, kerve and short slot, and each kerve is respectively positioned on the sustained height below skewed slot On, each elongated slot and short slot are respectively positioned on the top of skewed slot, and the top of each elongated slot extends to the transposition ring short transverse vertically upward Top, the top of each short slot is located at the middle part of the transposition ring short transverse；The skewed slot in fold-line-shaped successively link up kerve, Elongated slot, kerve, short slot, kerve, elongated slot simultaneously form circulation on the circumference of transposition ring.