CN201843524U - Full hydraulic reamer - Google Patents
Full hydraulic reamer Download PDFInfo
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- CN201843524U CN201843524U CN2010205970321U CN201020597032U CN201843524U CN 201843524 U CN201843524 U CN 201843524U CN 2010205970321 U CN2010205970321 U CN 2010205970321U CN 201020597032 U CN201020597032 U CN 201020597032U CN 201843524 U CN201843524 U CN 201843524U
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Abstract
A full hydraulic reamer is applied to the field of drilling and reaming operation for oil-gas exploration and development. The outer wall of a mandrel piston is in the shape of a stepped cylinder, a mandrel nipple is in threaded connection with the lower end of the mandrel piston, an annular sealing and limiting ring is arranged in an annular space between the mandrel nipple and a casing, a mandrel cap is sleeved on the outer wall of the lower end of the mandrel nipple, a main spray nozzle and a main spray nozzle gland are fixed in a stepped center hole of the mandrel cap, a bypass hole is arranged on the wall of the mandrel cap, a lower joint is fixed at the lower end of the casing, a mandrel seat is fixed at the upper end of the lower joint, three rectangular window openings are uniformly distributed on the wall of the casing circumferentially, rectangular reamer blades are mounted in the rectangular window openings through cylindrical pins, and incomplete gears are arranged at the inner ends of the reamer blades and mesh with racks on a regular triangular prism in the middle of the mandrel piston. The reamer blades are stretched when a user rotates a drill stem and pump displacement is increased, and accordingly reaming can be started. After reaming operation is finished and the steel ball is released, the reaming blades are folded. The reamer can drill forwards continuously normally after reaming is finished, thereby saving time for drilling.
Description
Technical field
The utility model relates to the oil and gas well drilling technical field, particularly a kind of underreamer special tool, a kind of specifically hydraulic pressure reamer that is used for the reaming hole operation.
Background technology
The reaming hole operation is a process of the well original position being expanded as the bigger well of diameter when creeping into.Nearly 20-30, along with oil/gas drilling shifts towards fields such as deep-well, ultradeep well, high-pressure oil-gas well, ocean deepwater drillings, the complicated state that drilling engineering will be faced is more and more.The reaming hole technology constantly develops as the important means of handling the drilling well unusual condition, becomes gradually a kind ofly can answer the commute leakiness stratum of collapsing, and realizes the well cementation of little gap, reduces the superior technology of drilling cost.
The common reamer that the reaming hole operation is used generally can be divided into two kinds of fixed-wing reamer and movable wing reamers.The fixed-wing reamer mainly is meant the diplocardia drill bit, is made up of pilot bit and reaming hole wing 8 two parts.Pilot bit and conventional bit structure are in pit shaft bottom much at one when creeping into, can get out the less neck eye (well) of diameter; Reaming hole wing 8 is the prism structures that have cutting edge, along the circumferential direction is arranged in the side of diplocardia drill bit, only is distributed in usually in the quarter turn scope, and energy high-ranking military officer eye is expanded as the well of production engineering specifications diameter.Diplocardia drill bit overall structure is eccentric design, thereby causes this class reaming hole instrument to be subjected to force unbalance, easily causes the vibration of bottomhole assembly in the drilling process, also may cause serious hole deviation.
The movable wing reamer is divided into two kinds of arm-type reamer and piece formula reamers according to the difference of reaming hole body.The reaming hole body of arm-type reamer relies on bearing pin to be fixed on the body usually, can in the certain angle scope, rotate around fixed axis, and after the reaming hole body opens, shape such as open both arms; The reaming hole body of piece formula reamer is wedge-like, can not rotate, can under hydraulic pressure or mechanical thrust effect, give prominence to or the retraction body in.Because adopted consumable accessorys such as spring, the switching motion of arm-type reamer is subjected to the particularly influence of solid concentration of property of drilling fluid easily; The wing requirement on machining accuracy of piece formula reamer is higher, and in addition, because block size is subjected to the restriction of body wall thickness, reaming hole body radial dimension is less, thereby can only enlarge about 25% by high-ranking military officer's eye.
In addition, fixed-wing reamer and most movable wing reamer are finished after the reaming hole operation and must be pulled out of hole, and could continue to creep into after changing conventional drilling tool.
To sum up, existing reamer self structure is still perfect inadequately, is difficult to satisfy fully the drilling engineering demand, still needs to improve according to actual needs design, explores more reasonable structure form.
Summary of the invention
The purpose of this utility model is: a kind of all-hydraulic reamer is provided, can expands as the hole diameter that satisfies production engineering specifications by high-ranking military officer's eye; After reaming hole was finished, the reaming hole wing was regained under hydraulic action in the housing, need not pull out of hole and can continue normally to creep into.
The technical solution adopted in the utility model is: all-hydraulic reamer, mainly by housing, axle, straight pin, reaming hole wing, sealing spacing ring, cut off, spindle seat, lower contact form, it is characterized in that: the inner chamber at cylindrical shell has axle;
Axle mainly is made up of axle piston, axle pipe nipple, axle cap, main burner and main burner gland.The axle piston has centre bore, and the axle piston outer wall is the stairstepping cylinder, and axle piston upper end outer wall is the cylinder bodily form, and axle piston upper end cylinder outer wall and housing upper end centre bore are slidingly matched; Axle piston middle part outer wall is a positive three prism, on three planes of positive three prism the tooth bar that cooperates with gear is arranged respectively.Regular triangular prism face in axle piston middle part outer wall and the housing is slidingly matched; The lower end outer wall of axle piston is the cylinder bodily form, the lower end cylinder outer wall of axle piston and the inwall of housing are slidingly matched, there is screw thread lower end at the axle piston, axle piston lower end screw thread is connected with the axle pipe nipple, the axle pipe nipple has centre bore for the cylinder bodily form, between axle pipe nipple outer wall and the housing annular space is arranged.An annular seal spacing ring is arranged in the annular space between axle pipe nipple and housing, bolt hole is arranged on housing, will seal spacing ring by bolt and be fixed in the annular space between axle pipe nipple and the housing.Between axle centre bore and the annular space linked hole is arranged, linked hole is on axle pipe nipple or axle piston.Outer wall is with the axle cap in the lower end of axle pipe nipple, and by cutting off the lower end that the axle cap is fixed on the axle pipe nipple; The axle cap has the stepped central hole, is fixed with main burner in axle cap ladder centre bore, and the main burner gland is arranged on the upper surface of main burner, and the main burner gland has centre bore, and the lower surface of axle pipe nipple is pressed in the top of main burner gland; On the wall of axle cap by-pass prot is arranged, by-pass prot is sealed by the axle pipe nipple.
There is internal thread lower end at housing, and screw thread is fixed with lower contact in the housing lower end, and the lower contact lower end can link to each other with pilot bit.The lower contact upper end is fixed with spindle seat.Spindle seat has centre bore, between spindle seat and the inner walls annular space is arranged, and spindle seat has lateral wellbore liquid opening, and the position of lateral wellbore liquid opening is relative with annular space between spindle seat and the housing.
Along the circumferential direction be evenly equipped with three rectangle fenestras on the housing wall, the position of rectangle fenestra is relative with axle piston middle part positive three prism, by straight pin rectangle reaming hole wing is installed in the rectangle fenestra, and the reaming hole wing can rotate around pin.There is the PDC cutting teeth outer end of reaming hole wing, and there is imperfect gear reaming hole wing the inner, the tooth bar engagement on the imperfect gear of reaming hole wing and the axle piston middle part positive three prism.
There is drilling fluid to return emissions groove between per two rectangle fenestras on the described housing.
There is chamfering described main burner gland centre bore upper end, and the steel ball of input can be enclosed in formation sealing on the main burner gland by seat.
Two row PDC cutting teeths are housed on the described reaming hole wing, and cutting teeth is a straight line.Have chip area between two toothrows.Reaming hole wing outer rim is arc surface and is fixed with hard alloy blocks.
Described axle piston upper end outer wall has the annular groove of two semicircular arcs, and the spacing of bipassage ring connected in star equates with the stroke distances of axle.Four spacing holes that on housing, have, there is screw thread the outer end of spacing hole, and a steel ball is arranged in each spacing hole, and half of steel ball is in annular groove; At spacing hole spacing spring compression steel ball is arranged.The outer end screw thread of limit spring is fixed with spring capping.Adjust spacing gland screw-in depth and can adjust the thrust of limit spring spacing steel ball.
Three side nozzles are arranged on the wall of housing, and side nozzle is below the reaming hole wing, and side nozzle is fixed on by internal circlip in the inclined hole of housing, and the drilling fluid of side nozzle ejection can clean and cool off the reaming hole wing.The inner of housing inclined hole is relative with axle piston lower end cylinder, plays sealing function; On the cylinder of axle piston lower end transverse holes is arranged, on the cylinder of axle piston lower end cannelure is arranged, cannelure is with transverse holes outer end UNICOM, and cannelure equates with the stroke distances of axle to the distance of housing inclined hole the inner.
By bolt three fan-shaped positive stops are arranged on housing, the position of three positive stops is respectively on the top of three rectangle fenestras.The hardness of positive stop is slightly smaller than the reaming hole wing, fits tightly between the two guaranteeing.Positive stop is by on the outer wall that is bolted to housing, in case wearing and tearing can be changed.
In order to improve housing and axle piston seal, sealing ring on having on the outer wall of axle piston upper end; On the outer wall of axle piston lower end, lower seal is arranged; For improving the sealing between sealing spacing ring inwall and the axle pipe nipple outer wall, on sealing spacing ring inwall, inner seal ring is arranged; For improving the sealing between sealing spacing ring outer wall and the inner walls, on sealing spacing ring outer wall, exterior seal ring is arranged.
Sketch the operating principle of all-hydraulic reamer.
Consult Fig. 2.When the drilling fluid of certain flow flow through main burner 15, because throttle effect, nozzle produced pressure differential up and down.The hydraulic coupling that is produced by pressure differential at first acts on the axle cap 14, by on the axle cap 14 cut off 12 with force transmission to axle piston 2.Four spacing steel balls 3 in the axle piston 2 top limited impressions are open, and axle piston 2 is descending until reaming hole wing 8 complete openings.At this moment, the little firm ball 3 at axle piston 2 tops will enter in another (top) limited impression at axle piston 2 tops, make axle piston 2 location.Simultaneously, because axle piston 2 descending, the transverse holes at axle piston 2 middle parts is communicated with side nozzle 9 runners on the housing 1.The part drilling fluid flows to reaming hole wing 8 through side nozzle 9, plays the effect of taking rock and cooling.Drill string rotating, reaming hole wing 8 carries out reaming hole.
After finishing predetermined reaming hole task, in drill string, drop into a steel ball.Consult Fig. 3.Steel ball is encapsulated in seat on the main burner gland 13 after entering reamer, and steel ball and main burner gland 13 form sealing, have stopped the drilling fluid that all flows to drill bit, force drilling liquid flow to side nozzle 9.Side nozzle 9 flow moment increases, drilling liquid pressure raises thereupon suddenly.The action of hydraulic force that raises is on axle piston 2, and axle piston 2 lower section are long-pending bigger, and the top area is less, so produce hydraulic coupling upwards.When hydraulic coupling acquires a certain degree, connect cutting off of axle cap 14 and axle pipe nipple 10 and 12 cut off, axle piston 2 under hydraulic coupling promotes to up, reaming hole wing 8 with axle piston 2 move upward and inwardly rotation regain in the housing 1; On the other hand, when axle piston 2 goes upward to extreme position, the spacing steel ball 3 at axle piston 2 tops will be pressed in former (bottom) limited impression, impel axle piston 2 location; 9 drilling fluids that no longer circulate of closing of side nozzle because of runner.
Consult Fig. 4.Simultaneously, after cutting off 12 disconnections, axle cap 14 under hydraulic action, move downward rapidly and the seat on spindle seat 16, the by-pass prot of axle cap 14 sidewalls is exposed and is communicated with axle piston 2 centre bores, drilling fluid flows to drill bit via the lateral wellbore liquid opening on axle cap 14 and the spindle seat 16, and normal drillng operation is achieved.
The beneficial effects of the utility model: the principal character of the all-hydraulic reamer of the utility model is as follows:
(1) the utility model rotary drill column and strengthen pumpage after the designated depth, the reaming hole wing opens, and can begin reaming hole; After reaming hole was finished, the reaming hole wing was regained after the pitching; Reaming hole need not pull out of hole after finishing, and can continue normally to creep into, and saves when boring;
(2) motion of axle is not used spring fully by hydraulic control, improves the device working life;
(3) use to cut off and guarantee the action that do not make a mistake in the course of the work of reaming hole wing;
(4) the reaming hole operation is ended with pitching, and signal is clear and definite; After the pitching, most pump amount all is used to promote the action of piston axle, good reliability;
(5) change side nozzle on the housing, can guarantee that reamer keeps stable duty under different pump amounts; The hydraulic energy that main burner on the replacing axle can change drill bit and reamer distributes, and has improved the compliance of instrument to environment.
Description of drawings
Fig. 1 is the all-hydraulic reamer structural profile of a utility model schematic diagram.
Fig. 2 is that reamer is in the reaming hole working state schematic representation.
Fig. 3 is that reamer is transferred to the transition state schematic diagram of resting state after dropping into steel ball by duty.
Fig. 4 cuts off 12 to disconnect 8 withdrawals of back reaming hole wing, and reamer has entered the resting state schematic diagram.Direction that arrow refers to is the direction that drilling fluid flows.
Among the figure, 1. housing, 2. axle piston, 3. spacing steel ball, 4. limit spring, 5. spring capping, 6. positive stop, 7. straight pin, 8. reaming hole wing, 9. side nozzle, 10. axle pipe nipple, 11. sealing spacing rings, 12. cut off 13. main burner glands, 14. axle caps, 15. main burners, 16. spindle seat, 17. lower contacts, 18. inner seal rings, 19. bolts, 20. exterior seal ring, 21. lower seal, 22. bolts, sealing ring on 23..
The specific embodiment
Embodiment 1: with an all-hydraulic reamer is example, and the utility model is described in further detail.
Consult Fig. 1.All-hydraulic reamer, mainly by housing 1, axle, straight pin 7, reaming hole wing 8, sealing spacing ring 11, cut off 12, spindle seat 16, lower contact 17 form, it is characterized in that: the inner chamber at cylindrical shell 1 has axle;
Axle mainly is made up of axle piston 2, axle pipe nipple 10, axle cap 14, main burner 15 and main burner gland 13.Axle piston 2 has centre bore, and axle piston 2 outer walls are the stairstepping cylinder, and axle piston 2 upper end outer walls are the cylinder bodily form, and axle piston 2 upper end cylinder outer walls and housing 1 upper end centre bore are slidingly matched; Axle piston 2 upper end outer walls have the annular groove of two semicircular arcs, and the spacing of bipassage ring connected in star equates with the stroke distances of axle.Four spacing holes that on housing 1, have, there is screw thread the outer end of spacing hole, and a steel ball 3 is arranged in each spacing hole, and half of steel ball 3 is in annular groove; There is limit spring 4 to compress steel ball 3 at spacing hole.The outer end screw thread of limit spring 4 is fixed with spring capping 5.Sealing ring 23 on having together on the axle piston 2 upper end outer walls.
The lower end outer wall of axle piston 2 is the cylinder bodily form, and the lower end cylinder outer wall of axle piston 2 and the inwall of housing 1 are slidingly matched, and on axle piston 2 lower end outer walls lower seal 21 is arranged.There is screw thread lower end at axle piston 2, and axle piston 2 lower end screw threads are connected with axle pipe nipple 10, and axle pipe nipple 10 has centre bore for the cylinder bodily form, between axle pipe nipple 10 outer walls and the housing 1 annular space is arranged.An annular seal spacing ring 11 is arranged in the annular space between axle pipe nipple 10 and housing 1, on housing 1, bolt hole is arranged, will seal spacing ring 11 by bolt 19 and be fixed in the annular space between axle pipe nipple 10 and the housing 1.On sealing spacing ring 11 inwalls, twice inner seal ring 18 is arranged; On sealing spacing ring 11 outer walls, twice exterior seal ring 20 is arranged.Four linked holes are arranged between axle centre bore and the annular space, and linked hole is in axle piston 2 lower ends, promptly in the upper end of annular space.
Outer wall is with axle cap 14 in the lower end of axle pipe nipple 10, and by cutting off 12 axle cap 14 is fixed on the lower end of axle pipe nipple 10; Axle cap 14 has the stepped central hole, is fixed with main burner 15 in axle cap 14 ladder centre bores, and main burner gland 13 is arranged on the upper surface of main burner 15, and main burner gland 13 has centre bore, and there are 45 degree chamferings main burner gland 13 centre bores upper end.The lower surface of axle pipe nipple 10 is pressed in the top of main burner gland 13; On the wall of axle cap 14 by-pass prot is arranged.
There is internal thread lower end at housing 1, and screw thread is fixed with lower contact 17 in the housing lower end, and lower contact 17 upper ends are fixed with spindle seat 16.Spindle seat 16 has centre bore, between spindle seat 16 and housing 1 inwall annular space is arranged, and spindle seat 16 has lateral wellbore liquid opening, and the position of lateral wellbore liquid opening is relative with annular space between spindle seat 16 and the housing 1.
Along the circumferential direction be evenly equipped with three rectangle fenestras on housing 1 wall, be fixed with three fan-shaped positive stops 6 by bolt 22 on the top of three rectangle fenestras.The position of rectangle fenestra is relative with axle piston 2 middle part positive three prisms, by straight pin 7 rectangle reaming hole wing 8 is installed in the rectangle fenestra, and there are two row PDC cutting teeths the outer end of reaming hole wing 8, and cutting teeth is a straight line.Have chip area between two toothrows.Reaming hole wing 8 outer rims are arc surface and are fixed with hard alloy blocks.There is imperfect gear reaming hole wing 8 the inners, the tooth bar engagement on the imperfect gear of reaming hole wing 8 and the axle piston 2 middle part positive three prisms.
Three side nozzles 9 are arranged on the wall of housing 1, and side nozzle 9 is below reaming hole wing 8, and side nozzle 9 is fixed on by internal circlip in the inclined hole of housing 1, and the inner of housing 1 inclined hole is relative with axle piston 2 lower end cylinders; On axle piston 2 lower end cylinders transverse holes is arranged, on the axle piston 2 lower end cylinders cannelure is arranged, cannelure is with transverse holes outer end UNICOM, and cannelure equates with the stroke distances of axle to the distance of housing 1 inclined hole the inner.The stroke distances of axle is meant that axle moves downward, and axle cap 14 lower surfaces contact with spindle seat 16, the distance that axle is moved, i.e. distance between axle cap 14 lower surfaces and the spindle seat 16 upper end contact surfaces.
There is one drilling fluid to return emissions groove between per two rectangle fenestras on the housing 1.
Sketch each parts assembling process.Consult Fig. 1.
(1) assembling of axle cap 14: 15 of main burners are aided with necessary sealing in axle cap 14 lower end inner chambers; Main burner gland 13 screws in the axle cap 14 lower end internal threads, pushes down main burner 15.
(2) assembling of axle: axle pipe nipple 10 upper external screw threads screw in axle piston 2 lower end internal threads; The sealing spacing ring 11 of annular is placed on axle pipe nipple 10 outer walls;
Insert in the axle cap 14 upper end centre bores axle pipe nipple 10 lower ends, with two cut off 12 with axle pipe nipple 10 and axle cap 14 the two is fixed as one.
(3) the axle housing 1 of packing into: axle is packed into by housing 1 centre bore lower end, promotes to the upper end reposefully, until the tight shoulders of contact housing 1 inner chambers of axle piston 2; 4 spacing steel balls 3 and limit spring 4 are put into the spacing hole of housing 1 upper end, and spacing steel ball 3 has a hemisphere to enter in next row's groove of axle piston 2, compresses limit spring 4 by spring capping 5.2 axially-movables of spacing steel ball 3 restriction axle pistons; 4 bolts 19 are screwed in by the screw on the housing 1, and 4 bolts 19 also insert in the cannelure of sealing spacing ring 11,11 axially-movables of restriction sealing spacing ring.
(4) lower contact 17 is connected with housing 1: spindle seat 16 screws in the lower contact 17 upper end centre bores; Then lower contact 17 is screwed in the lower end of housing 1.
Using method of the present utility model is:
Consult Fig. 2, after all-hydraulic reamer was lowered to the precalculated position, when surface pump did not start, reaming hole wing 8 was in closed condition; After the turn on pump circulation, enlargement discharge cleans pit shaft gradually; Do not apply the pressure of the drill, held stationary rotating speed 80～100rpm.When flow reaches 30L/s, the pressure reduction of main burner about in the of 15 will reach about 1MPa, because hydraulic coupling was not enough to cut off and cut off 12 this moment, but can push four spacing steel balls 3 open, so whole axle moves downward under axle cap 14 drives, reaming hole wing 8 slowly opens thereupon, constantly cuts the borehole wall, produces borehole wall step.Axle cap 14 contact spindle seats 16 and compress after, reaming hole wing 8 opens fully.This process may continue 30～50min.The complete open while of wing, side nozzle 9 is communicated with centre bore in the axle, and the drilling liquid flow dynamic resistance reduces, so pump pressure will reduce suddenly.Think that promptly reamer enters duty after detecting the variation of pump pressure.At this moment can slowly, steadily apply the pressure of the drill, be controlled in 6～8t scope, beginning reaming hole drilling process.
Consult Fig. 3, reaming hole drops into a steel ball by ground after finishing in drilling rod.Steel ball enters the reamer back seat and is encapsulated on the main burner gland 13, and steel ball and gland form sealing, have stopped the drilling fluid that all flows to drill bit, force drilling liquid flow to side nozzle 9.Side nozzle 9 flow moment increases, pressure drop raises thereupon suddenly, can reach 4～6MPa.The hydraulic coupling that raises promotes axle piston 2 and moves upward.
Consult Fig. 4, when hydraulic coupling acquires a certain degree, connect cutting off of axle cap 14 and axle pipe nipple 10 and 12 cut off, axle piston 2 under hydraulic coupling promotes to up, reaming hole wing 8 with axle piston 2 move upward and inwardly rotation regain in the housing 1.When axle piston 2 goes upward to extreme position, the spacing steel ball 3 at axle piston 2 tops will be pressed in the groove, impel axle piston 2 location; 9 drilling fluids that no longer circulate of closing of side nozzle because of runner.On the other hand, after cutting off 12 disconnections, axle cap 14 under hydraulic action, move downward rapidly and the seat on spindle seat 16, the by-pass prot of axle cap 14 sidewalls is exposed and is communicated with the axle centre bore, careful axle cap 14 by-pass prots of the drilling fluid lateral wellbore liquid opening on spindle seat 16 again flow into lower contact 17 centre bores, flow to bottom work drill bit at last, this moment, reamer entered resting state.This moment, all drilling liquid flow can begin normal drilling process to drill bit.
In the actual use, the utility model can be connected with pilot bit, realizes with boring reaming hole; Also can with lead an instrument and be connected, only be used for the reaming hole construction.
Claims (8)
1. all-hydraulic reamer, mainly by housing (1), axle, straight pin (7), reaming hole wing (8), sealing spacing ring (11), cut off (12), spindle seat (16), lower contact (17) is formed, it is characterized in that: the inner chamber at cylindrical shell (1) has axle;
Axle mainly is made up of axle piston (2), axle pipe nipple (10), axle cap (14), main burner (15) and main burner gland (13); Axle piston (2) has centre bore, and axle piston (2) outer wall is the stairstepping cylinder, and axle piston (2) upper end outer wall is the cylinder bodily form, and axle piston (2) upper end cylinder outer wall and housing (1) upper end centre bore are slidingly matched; Axle piston (2) middle part outer wall is a positive three prism, on three planes of positive three prism the tooth bar that cooperates with gear is arranged respectively; Regular triangular prism face in axle piston (2) middle part outer wall and the housing (1) is slidingly matched; The lower end outer wall of axle piston (2) is the cylinder bodily form, the lower end cylinder outer wall of axle piston (2) and the inwall of housing (1) are slidingly matched, there is screw thread lower end at axle piston (2), axle piston (2) lower end screw thread is connected with axle pipe nipple (10), axle pipe nipple (10) has centre bore for the cylinder bodily form, between axle pipe nipple (10) outer wall and the housing (1) annular space is arranged; In the annular space between axle pipe nipple (10) and housing (1) an annular seal spacing ring (11) is arranged, on housing (1), bolt hole is arranged, will seal spacing ring (11) by bolt (19) and be fixed in the annular space between axle pipe nipple (10) and the housing (1); Between axle centre bore and the annular space linked hole is arranged, linked hole is on axle pipe nipple (10) or axle piston (2); Lower end outer wall at axle pipe nipple (10) is with axle cap (14), and axle cap (14) is fixed on the lower end of axle pipe nipple (10) by cutting off (12); Axle cap (14) has the stepped central hole, in axle cap (14) ladder centre bore, be fixed with main burner (15), main burner gland (13) is arranged on the upper surface of main burner (15), main burner gland (13) has centre bore, and the lower surface of axle pipe nipple (10) is pressed in the top of main burner gland (13); On the wall of axle cap (14) by-pass prot is arranged;
There is internal thread lower end at housing (1), is fixed with lower contact (17) at housing lower end screw thread, and lower contact (17) upper end is fixed with spindle seat (16); Spindle seat (16) has centre bore, between spindle seat (16) and housing (1) inwall annular space is arranged, and spindle seat (16) has lateral wellbore liquid opening, and the position of lateral wellbore liquid opening is relative with annular space between spindle seat (16) and the housing (1);
Along the circumferential direction be evenly equipped with three rectangle fenestras on housing (1) wall, the position of rectangle fenestra is relative with axle piston (2) middle part positive three prism, by straight pin (7) rectangle reaming hole wing (8) is installed in the rectangle fenestra, there is the PDC cutting teeth outer end of reaming hole wing (8), there is imperfect gear reaming hole wing (8) the inner, the tooth bar engagement on the imperfect gear of reaming hole wing (8) and axle piston (2) the middle part positive three prism.
2. all-hydraulic reamer according to claim 1 is characterized in that: described housing (1) is gone up between per two rectangle fenestras has drilling fluid to return emissions groove.
3. all-hydraulic reamer according to claim 1 is characterized in that: there is chamfering described main burner gland (13) centre bore upper end.
4. all-hydraulic reamer according to claim 1, it is characterized in that: two row PDC cutting teeths are housed on the described reaming hole wing (8), cutting teeth is a straight line, has chip area between two toothrows, and reaming hole wing (8) outer rim is arc surface and is fixed with hard alloy blocks.
5. according to claim 1,2,3 or 4 described all-hydraulic reamers, it is characterized in that: described axle piston (2) upper end outer wall has the annular groove of two semicircular arcs, and the spacing of bipassage ring connected in star equates with the stroke distances of axle; Four spacing holes that on housing (1), have, there is screw thread the outer end of spacing hole, and a steel ball (3) is arranged in each spacing hole, and half of steel ball (3) is in annular groove; Have limit spring (4) to compress steel ball (3) at spacing hole, the outer end screw thread of limit spring (4) is fixed with spring capping (5).
6. according to claim 1,2,3 or 4 described all-hydraulic reamers, it is characterized in that: three side nozzles (9) are arranged on the wall of housing (1), side nozzle (9) is in the below of reaming hole wing (8), side nozzle (9) is fixed on by internal circlip in the inclined hole of housing (1), and the inner of housing (1) inclined hole is relative with axle piston (2) lower end cylinder; On the cylinder of axle piston (2) lower end transverse holes is arranged, on the cylinder of axle piston (2) lower end cannelure is arranged, cannelure is with transverse holes outer end UNICOM, and cannelure equates with the stroke distances of axle to the distance of housing (1) inclined hole the inner.
7. according to claim 1,2,3 or 4 described all-hydraulic reamers, it is characterized in that: go up at housing (1) and be fixed with three fan-shaped positive stops (6) by bolt (22), the position of three positive stops (6) is respectively on the top of three rectangle fenestras.
8. according to claim 1,2,3 or 4 described all-hydraulic reamers, it is characterized in that: on the outer wall of axle piston (2) upper end, last sealing ring (23) is arranged; On the outer wall of axle piston (2) lower end, lower seal (21) is arranged; On sealing spacing ring (11) inwall, inner seal ring (18) is arranged; On sealing spacing ring (11) outer wall, exterior seal ring (20) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205970321U CN201843524U (en) | 2010-11-04 | 2010-11-04 | Full hydraulic reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205970321U CN201843524U (en) | 2010-11-04 | 2010-11-04 | Full hydraulic reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843524U true CN201843524U (en) | 2011-05-25 |
Family
ID=44038417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205970321U Expired - Lifetime CN201843524U (en) | 2010-11-04 | 2010-11-04 | Full hydraulic reamer |
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| Country | Link |
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| CN (1) | CN201843524U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003146A (en) * | 2010-11-04 | 2011-04-06 | 中国石油天然气集团公司 | Full-hydraulic reamer |
| CN109236189A (en) * | 2018-10-24 | 2019-01-18 | 西南石油大学 | A kind of downhole drill reamer |
| CN110420913A (en) * | 2019-07-19 | 2019-11-08 | 唐山三友氯碱有限责任公司 | Synthetic furnace visor automatic flushing device |
-
2010
- 2010-11-04 CN CN2010205970321U patent/CN201843524U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003146A (en) * | 2010-11-04 | 2011-04-06 | 中国石油天然气集团公司 | Full-hydraulic reamer |
| CN102003146B (en) * | 2010-11-04 | 2012-12-12 | 中国石油天然气集团公司 | Full-hydraulic reamer |
| CN109236189A (en) * | 2018-10-24 | 2019-01-18 | 西南石油大学 | A kind of downhole drill reamer |
| CN110420913A (en) * | 2019-07-19 | 2019-11-08 | 唐山三友氯碱有限责任公司 | Synthetic furnace visor automatic flushing device |
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