CN208502663U - A kind of downhole hydraulic oscillator - Google Patents
A kind of downhole hydraulic oscillator Download PDFInfo
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- CN208502663U CN208502663U CN201820777637.5U CN201820777637U CN208502663U CN 208502663 U CN208502663 U CN 208502663U CN 201820777637 U CN201820777637 U CN 201820777637U CN 208502663 U CN208502663 U CN 208502663U
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Abstract
The utility model relates to a kind of downhole hydraulic oscillators, belong to technical field of petroleum downhole equipment.It is made of vibration pipe nipple and oscillation pipe nipple, vibration pipe nipple is made of mandrel, top connection, lower contact, outer tube, transition joint and piston, one end of outer tube is equipped with lower contact, the other end screw thread of outer tube is equipped with top connection, mandrel is provided in outer tube, one end of mandrel extends to top connection outer end, is equipped with disc spring by spacer and push plate on the mandrel in outer tube.The problem of downhole hydraulic oscillator structure is simple, easy for installation, has radial dimension small, and horizontal drilling stability is good, can effectively prevent backing pressure, reduces energy loss caused by friction, reduces frictional resistance, which thereby enhance the efficiency of horizontal well operations.It is used especially suitable for operations such as long horizontal, High angle and multi-branched horizontal wells.
Description
Technical field
The utility model relates to a kind of downhole hydraulic oscillators, belong to technical field of petroleum downhole equipment.
Background technique
In recent years, deepening continuously with each elephant hunt technology, oil well casing programme complexity gradually increase, long water
The problems such as quantity of flat, High angle and multi-branched horizontal well etc. increases proposes new actual requirement to drilling engineering, makes waterpower
The development space and demand of the tools such as oscillator are improved.With regard to well horizontal section length and the realization quick drill of how improving the standard
Into the problems such as become Petroleum Industry correlative study focus of attention.Complicated casing programme, not only to drilling technology and method
Higher requirement is proposed, and biggish hole angle significantly increases the frictional resistance between petroleum drilling roofbolt and the borehole wall, reduced
The transmission efficiency of bit pressure, affects mechanical rate of penetration.Domestic and foreign scholars with regard to how to improve the standard the flat segment length of well water and
The problems such as realizing fast drilling has carried out a large amount of research work.Mud motor such as hydroscillator etc. is improved due to having
Rate of penetration, increase single footage per bit, convenient for oriented control well track and can make sliding send brill when drill string and the borehole wall it
Between static friction be changed into many advantages, such as sliding friction is to reduce frictional resistance, make its development space and demand obtain greatly mentioning
It rises, has also obtained the highest attention of vast researcher.
Summary of the invention
The purpose of this utility model is that in view of the above shortcomings of the prior art, drill string can be effectively reduced by providing one kind
Frictional resistance between the borehole wall, the generation for avoiding lock of tool drilling, and then improve the downhole hydraulic oscillator of drilling efficiency.
The technical solution of the utility model is:
A kind of downhole hydraulic oscillator, it is made of vibration pipe nipple and oscillation pipe nipple, is vibrated between pipe nipple and oscillation pipe nipple
It is mutually threadedly coupled, it is characterised in that: the vibration pipe nipple is by mandrel, top connection, lower contact, outer tube, transition joint and work
Plug is constituted, and one end of outer tube is equipped with lower contact by transition joint screw thread, and the other end screw thread of outer tube is equipped with top connection, outside
Mandrel is provided in pipe, one end of mandrel extends to top connection outer end, is equipped on the mandrel in outer tube by spacer and push plate
Disc spring；Piston is equipped with by mandrel center tap and mandrel lower contact on mandrel in transition joint, piston outer periphery is indirect in
Head inner wall is slidably connected；Vibration pipe nipple is connect by lower contact with oscillation short-section thread.
The mandrel is variable diameter tubular body, is slidably connected between mandrel and top connection.
The mandrel center tap is connect with mandrel thread；One end of mandrel center tap is threadedly coupled with mandrel lower contact,
The other end of mandrel center tap and push plate connect.
The push plate is slidably connected with outer tube wall.
The top connection and；Balance hole is respectively arranged on the circumference of transition joint.
The oscillation pipe nipple is by outer tube body, spline housing, oscillation short joint, fluidic, cylinder sleeve, piston rod, oscillation
Piston, splined shaft, rotary sleeve, oscillating plate and cylinder cap are constituted, and one end of outer tube body is threadedly coupled with the lower contact of vibration pipe nipple；Outside
The other end of tube body is equipped with oscillation short joint by spline external threading；One end is fixed with jet stream by mounting base in outer tube body
Element, the outer tube body of fluidic side is interior to be equipped with piston rod by cylinder sleeve and cylinder cap, and one end end of piston rod passes through solid
Determine nut and oscillating piston is installed；The other end of piston rod extends to cylinder cap outer end；Pass through in spline housing and oscillation short joint
Rotary sleeve is equipped with splined shaft；On the inner wall of rotary sleeve and corresponding splined shaft is provided circumferentially about spiral trajectory, spiral
Rotation steel ball is provided in trajectory；Sliding steel ball, splined shaft and work are equipped with by synchronizing sleeve on the splined shaft of rotary sleeve side
Stopper rod is threadedly coupled.
It is provided with splined shaft centre bore on the splined shaft, is radially set on the splined shaft circumference of splined shaft centre bore one end
It is equipped with intercommunicating pore, intercommunicating pore is connected to splined shaft centre bore.
The rotary sleeve is cylindrical body, is fixed with oscillating plate, eccentric setting on oscillating plate on one end port of rotary sleeve
There is liquid stream mouth.
It is provided with closure plate in the centre bore of the oscillation short joint of the oscillating plate side, eccentric setting has liquid on closure plate
Discharge orifice, liquid stream mouth are slidably and sealingly connected with liquid flow hole.
The fluidic is cuboid, and fluidic is made of intermediate plate, left plate and right side plate, the one of intermediate plate
Side is provided with left plate, and lower intercommunicating pore is provided on left plate, and the other side of intermediate plate is provided with right side plate；It is arranged on right side plate
There is upper intercommunicating pore；It is fixed to each other between intermediate plate, left plate and right side plate by screw.
The intermediate plate is made of splitter, upper mid plate and lower intermediate plate, and upper mid plate and lower intermediate plate are in upper and lower shape
Horn-like liquid stream import is arranged in setting, one end between upper mid plate and lower intermediate plate, and the liquid stream of other end setting V-shaped goes out
Mouthful, liquid stream import is connected to fluid outlet；It is provided with splitter in fluid outlet, liquid flow cavity, upper liquid are provided on upper mid plate
The upper intercommunicating pore and fluid outlet being arranged on stream chamber and right side plate are respectively communicated with, and are provided on the upper mid plate of upper liquid flow cavity side
Upper feedback liquid flow cavity, is provided with upper feedback runner on left plate corresponding with upper feedback liquid flow cavity, upper feedback runner one end with it is upper
Liquid flow cavity connection is fed back, the upper feedback runner other end is connected to fluid outlet；Lower liquid flow cavity, lower liquid stream are provided on lower intermediate plate
The lower intercommunicating pore and fluid outlet being arranged on chamber and left plate are respectively communicated with, and are provided with down on the lower intermediate plate of lower liquid flow cavity side
Feed back liquid flow cavity, be provided with lower feedback runner on right side plate corresponding with lower feedback liquid flow cavity, lower feedback runner one end with it is lower instead
Liquid flow cavity connection is presented, the lower feedback runner other end is connected to fluid outlet.
The cylinder sleeve is cylindrical body, is provided with plunger shaft in cylinder sleeve, is provided with feed liquor on the cylinder sleeve of plunger shaft front end
Hole, plunger shaft are connected to by upper inlet opening with fluid outlet；Cylinder sleeve lower flow channel is provided on cylinder sleeve below plunger shaft, under cylinder sleeve
One end of runner is connected to fluid outlet；The other end of cylinder sleeve lower flow channel is connected to plunger shaft.
The cylinder sleeve circumference side is provided with left runner, and the lower intercommunicating pore being arranged on left runner and left plate is connected to, cylinder
The set circumference other side is provided with right runner, and the upper intercommunicating pore being arranged on right runner and right side plate is connected to.
It is provided with swivel bearing between the cylinder cap and piston rod, is set between the cylinder cap and piston rod of swivel bearing side
It is equipped with sealing ring, shape corresponding with the left runner of cylinder sleeve and right runner is provided with the left runner of cylinder cap and the right stream of cylinder cap on the circumference of cylinder cap
Road, left runner are connected to the left runner of cylinder cap, and right runner is connected to the right runner of cylinder cap.
The utility model has the beneficial effects that:
The downhole hydraulic oscillator structure is simple, easy for installation, has radial dimension small, horizontal drilling stability is good, energy
The problem of effectivelying prevent backing pressure cooperates continuous pipe operation, it can be achieved that waterpower axial vibration, can effectively reduce level in the course of work
Frictional resistance in well operations, the efficiency for well operations of improving the standard.Make especially suitable for long horizontal, High angle and multi-branched horizontal well etc.
Industry uses.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model,
Fig. 2 is the structural schematic diagram of the vibration pipe nipple of the utility model,
Fig. 3 is the structural schematic diagram of the oscillation pipe nipple of the utility model,
Fig. 4 is the schematic cross-sectional view of the fluidic of the utility model,
Fig. 5 is A-A in Fig. 4 to cross section structure schematic diagram,
Fig. 6 is B-B in Fig. 4 to cross section structure schematic diagram,
Fig. 7 is C-C in Fig. 4 to cross section structure schematic diagram,
Fig. 8 is the schematic cross-sectional view of the cylinder sleeve of the utility model,
Fig. 9 is the cross section structure schematic diagram of Fig. 8,
Figure 10 is the schematic cross-sectional view of the cylinder cap of the utility model,
Figure 11 is the cross section structure schematic diagram of cylinder cap.
In figure: 1, vibrate pipe nipple, 2, oscillation pipe nipple, 3, mandrel, 4, top connection, 5, lower contact, 6, outer tube, 7, in indirectly
Head, 8, piston, 9, spacer, 10, push plate, 11, disc spring, 12, mandrel center tap, 13, mandrel lower contact, 14, balance hole, 15, outer
Tube body, 16, spline housing, 17, oscillation short joint, 18, cylinder sleeve, 19, piston rod, 20, oscillating piston, 21, splined shaft, 22, rotation
Pivoted housing, 23, oscillating plate, 24, cylinder cap, 25, mounting base, 26, intermediate plate, 27, left plate, 28, right side plate, 29, lower intercommunicating pore,
30, upper intercommunicating pore, 31, splitter, 32, upper mid plate, 33, lower intermediate plate, 34, liquid stream import, 35, fluid outlet, 36, upper liquid stream
Chamber, 37, upper feedback liquid flow cavity, 38, upper feedback runner, 39, lower liquid flow cavity, 40, lower feedback liquid flow cavity, 41, lower feedback runner,
42, plunger shaft, 43, upper inlet opening, 44, cylinder sleeve lower flow channel, 45, left runner, 46, right runner, 47, swivel bearing, 48, a cylinder cap left side
Runner, 49, the right runner of cylinder cap, 50, spiral trajectory, 51, rotation steel ball, 52, synchronizing sleeve, 53, sliding steel ball, 54, liquid stream mouth,
55, splined shaft centre bore, 56, intercommunicating pore, 57, liquid flow hole.
Specific embodiment
The downhole hydraulic oscillator is made of vibration pipe nipple 1 and oscillation pipe nipple 2, vibrates phase between pipe nipple 1 and oscillation pipe nipple 2
It is mutually threadedly coupled, vibration pipe nipple 1 is made of mandrel 3, top connection 4, lower contact 5, outer tube 6, transition joint 7 and piston 8, outer tube 6
One end lower contact 5 is equipped with by 7 screw thread of transition joint, the other end screw thread of outer tube 6 is equipped with top connection 4, sets in outer tube 6
It is equipped with mandrel 3, one end of mandrel 3 extends to 4 outer end of top connection, and mandrel 3 is variable diameter tubular body, is between mandrel 3 and top connection 4
It is slidably connected.
Disc spring 11 is equipped with by spacer 10 and push plate 9 on mandrel 3 in outer tube 6；Push plate 11 and the sliding of 6 inner wall of outer tube connect
It connects.Piston 8 is equipped with by mandrel center tap 12 and mandrel lower contact 13 on mandrel 3 in transition joint 7,8 periphery of piston with
It is to be slidably connected between 7 inner wall of transition joint；Sealing ring is provided between 8 periphery of piston and transition joint 7；To guarantee piston 8
With the leakproofness between transition joint 7.Mandrel center tap 12 and mandrel lower contact 13 are respectively tubular body, mandrel center tap 12 with
Mandrel 3 is threadedly coupled；One end of mandrel center tap 12 is threadedly coupled with mandrel lower contact 13, the other end of mandrel center tap 12 with
Push plate 10 connects.It is respectively arranged with balance hole 14 on the circumference of top connection 4 and transition joint 7, it is outer to guarantee at work
The inside and outside pressure balance of pipe 6.Vibration pipe nipple 1 is threadedly coupled by lower contact 5 with oscillation pipe nipple 2.
Vibrate pipe nipple 2 by outer tube body 15, spline housing 16, oscillation short joint 17, fluidic, cylinder sleeve 18, piston rod 19,
Oscillating piston 20, splined shaft 21, rotary sleeve 22, oscillating plate 23 and cylinder cap 24 are constituted, one end and the vibration pipe nipple 1 of outer tube body 15
Lower contact 5 is threadedly coupled；The other end of outer tube body 15 is equipped with oscillation short joint 17 by 16 screw thread of spline housing；Outer tube body 15
Interior one end is fixedly installed with mounting base 25, and 2 side of mounting base is fixed with fluidic by fixing bolt.
Fluidic is cuboid, and fluidic is made of intermediate plate 26, left plate 27 and right side plate 28, intermediate plate 26
Side is provided with left plate 27, and lower intercommunicating pore 29 is provided on left plate 27, and the other side of intermediate plate 26 is provided with right side plate 28；
Intercommunicating pore 30 is provided on right side plate 28；It is fixed to each other between intermediate plate 26, left plate 27 and right side plate 28 by screw.
Intermediate plate 26 is made of splitter 31, upper mid plate 32 and lower intermediate plate 33, and upper mid plate 32 and lower intermediate plate 33 are in
Horn-like liquid stream import 34, other end setting is arranged in upper and lower shape setting, one end between upper mid plate 32 and lower intermediate plate 33
There is the fluid outlet 35 of V-shaped, liquid stream import 34 is connected to fluid outlet 35；Splitter 31, splitter are provided in fluid outlet 35
The liquid of inflow under the action of its cone, can be split and be divided into since splitter 31 is arranged in fluid outlet 35 by 31 tapered bodies
Upper and lower two parts.
Be provided with liquid flow cavity 36 on upper mid plate 32, the upper intercommunicating pore 30 that is arranged on upper liquid flow cavity 36 and right side plate 28 and
Fluid outlet 35 is respectively communicated with, and feedback liquid flow cavity 37 is provided on the upper mid plate 28 of upper 36 side of liquid flow cavity, with upper feedback
Feedback runner 38 is provided on the corresponding left plate 27 of liquid flow cavity 37, upper 38 one end of feedback runner and upper feedback liquid flow cavity 37 connect
Logical, upper 38 other end of feedback runner is connected to fluid outlet 35；Upper feedback liquid flow cavity 37 is connected to 34 tail end of liquid stream import.
Be provided with lower liquid flow cavity 39 on lower intermediate plate 33, the lower intercommunicating pore 29 that is arranged on lower liquid flow cavity 39 and left plate 27 and
Fluid outlet 35 is respectively communicated with, and lower feedback liquid flow cavity 40 is provided on the lower intermediate plate 33 of lower 39 side of liquid flow cavity, with lower feedback
Lower feedback runner 41 is provided on the corresponding right side plate 28 of liquid flow cavity 40, lower 41 one end of feedback runner and lower feedback liquid flow cavity 40 connect
Logical, lower 41 other end of feedback runner is connected to fluid outlet 35.Lower feedback liquid flow cavity 40 is connected to 34 tail end of liquid stream import.
Piston rod 19 is equipped with by cylinder sleeve 18 and cylinder cap 24 in the outer tube body 15 of fluidic side, cylinder sleeve 18 is cylinder
Body is provided with plunger shaft 42 in cylinder sleeve 18, inlet opening 43,42 front end of plunger shaft is provided on the cylinder sleeve 18 of 42 front end of plunger shaft
It is connected to by upper inlet opening 43 with fluid outlet 35；Cylinder sleeve lower flow channel 44, cylinder sleeve are provided on the cylinder sleeve 18 of 42 lower section of plunger shaft
One end of lower flow channel 44 is connected to fluid outlet 35；The other end of cylinder sleeve lower flow channel 35 is connected to 42 rear end of plunger shaft.
18 circumference side of cylinder sleeve is provided with the left runner 45 of left runner 45(outer tube body with the groove on the left of 18 circumference of cylinder sleeve
15 inner wall is formed), the lower intercommunicating pore 29 being arranged on left runner 45 and left plate 27 is connected to, and the 18 circumference other side of cylinder sleeve is provided with
The right right runner 46 of runner 46(inner wall of outer tube body 15 with the groove on the right side of 18 circumference of cylinder sleeve is formed), right runner 46 and right side
The upper intercommunicating pore 30 being arranged on plate 28 is connected to.
One end end of 42 inner piston rod 19 of plunger shaft is equipped with oscillating piston 20 by fixture nut；Piston rod 19 it is another
One end extends to 24 outer end of cylinder cap；Swivel bearing 47, the cylinder of 47 side of swivel bearing are provided between cylinder cap 24 and piston rod 19
It is provided with sealing ring between lid 24 and piston rod 19, to guarantee the sealing in cylinder sleeve 18.On the circumference of cylinder cap 24 with cylinder sleeve 18
Left runner 45 and the corresponding shape of right runner 46 are provided with the left runner 48 of cylinder cap and the right runner 49 of cylinder cap, left runner 45 and the left runner of cylinder cap
48 connections, the right right runner 49 of 46 cylinder cap of runner are connected to.
Splined shaft 21 is equipped with by rotary sleeve 22 in the spline housing 16 and oscillation short joint 17 of 24 side of cylinder cap；Extend
Piston rod 19 to 24 outer end of cylinder cap is threadedly coupled with splined shaft 21.It is sliding key connection between splined shaft 21 and spline housing 16；
On the inner wall of rotary sleeve 22 and it is respectively arranged with spiral trajectory 50 on corresponding 21 circumference of splined shaft, is set in spiral trajectory 50
It is equipped with rotation steel ball 51；To keep being uniformly arranged for rotation steel ball 51, rotation steel ball 51 can be arranged by retainer, to avoid work
Rotation steel ball 51 squeezes heap during making.It is provided with ball bearing between rotary sleeve 22 and oscillation short joint 17, to guarantee to rotate
The flexibility of 22 rotation of set.
Sliding steel ball 53, the branch for splined shaft 21 are equipped with by synchronizing sleeve 52 on the splined shaft 21 of 22 side of rotary sleeve
Support and sliding.Synchronizing sleeve 52 and rotary sleeve 22 are respectively cylindrical body, are axially evenly equipped with mounting groove on the circumference of synchronizing sleeve 52, are used for
The installation of steel ball 53 is slided, is fixed with oscillating plate 23 on one end port of rotary sleeve 22, eccentric setting has liquid stream on oscillating plate 23
Mouth 54.
Splined shaft centre bore 55, radial direction on 21 circumference of splined shaft of 55 one end of splined shaft centre bore are provided on splined shaft 21
It is provided with intercommunicating pore 56, intercommunicating pore 56 is connected to splined shaft centre bore 55.Intercommunicating pore 56 simultaneously with the left runner 48 of cylinder cap and cylinder cap
Right runner 49 is connected to.
It is provided with closure plate in the centre bore of the oscillation short joint 17 of 23 side of oscillating plate, eccentric setting has liquid stream on closure plate
Hole 57, liquid stream mouth 54 are slidably and sealingly connected with (Intermittent Contact is connect) with liquid flow hole 57.
When the downhole hydraulic oscillator cooperates coiled tubing work, drilling fluid is first by 3 centre of the mandrel of vibration pipe nipple 1
Through-hole enters in oscillation pipe nipple 2, and the drilling fluid entered in oscillation pipe nipple 2 is entered to through the liquid stream import 34 of fluidic to be penetrated
Fluid element, since liquid stream import 34 is in horn-like, drilling fluid greatly into it is small go out, there is certain metering function, in liquid stream import 34
Under the action of, drilling fluid forms high-pressure jet, then projects through fluid outlet 35, during this, due in fluid outlet 35
It is provided with the splitter 31 of bullet, under the action of splitter 31, drilling fluid, which is split, is divided into two parts up and down.Part on splitter 31
Drilling fluid is entered to through upper inlet opening 43 in the plunger shaft 42 of 20 front end of oscillating piston, and the drilling fluid of the lower part of splitter 31 is through cylinder sleeve
Lower flow channel 44 is collected at the rear end face of oscillating piston 20, and forms pressure and act on to the rear end face of oscillating piston 20, simultaneously
Since volume opposing pistons 42 volumes of chamber of cylinder sleeve lower flow channel 44 are small, the drilling fluid collected at the rear end face of oscillating piston 20 fills
It has one's bosom filled with after body, pressure pushes oscillating piston 20 to move ahead and (run to 42 left end of plunger shaft)；During this, oscillating piston 20
Drilling fluid in front end face extrusion piston chamber 42 forces the drilling fluid in plunger shaft 42 to be discharged by upper inlet opening 43.
While drilling fluid is discharged by upper inlet opening 43 and oscillating piston 20 moves ahead, oscillating piston 20 passes through piston rod 19
Splined shaft 21 is driven to move ahead, since splined shaft 21 is mounted on oscillation short joint 17 by rotary sleeve 22, and rotary sleeve 22 is interior
On wall and it is respectively arranged with spiral trajectory 50 on corresponding 21 circumference of splined shaft, rotation steel ball is provided in spiral trajectory 50
51；During piston rod 19 drives splined shaft 21 to move ahead, the rotation steel ball that is arranged in spiral trajectory 50 and spiral trajectory 50
Under 51 effects, rotary sleeve 22 is started turning, and thus oscillating plate 23 is driven to rotate, to make to produce between liquid stream mouth 54 and liquid flow hole 57
Raw periodically closure and unlatching.
During oscillating piston 20 moves ahead, the drilling fluid of part no longer enters to piston through upper inlet opening 43 on splitter 31
In chamber 42；At this point, on splitter 31 part and drilling fluid a part in upper inlet opening 43 enter through upper feedback runner 38 it is upper
Liquid flow cavity 37 is fed back, another part drilling fluid enters in liquid flow cavity 36.
Drilling fluid and source since upper feedback liquid flow cavity 37 is connected to 34 tail end of liquid stream import, into upper feedback liquid flow cavity 37
It is continuous in the rear end face of oscillating piston 20 by cylinder sleeve lower flow channel 44 after the drilling fluid that source constantly enters to liquid stream import 34 collects
Collect, oscillating piston 20 is thus made constantly to move ahead, and runs to extreme position.
The drilling fluid in liquid flow cavity 36 is entered to through upper intercommunicating pore 30, right runner 46, the right runner 49 of cylinder cap and intercommunicating pore
56 enter in splined shaft centre bore 55；Then it is discharged through liquid stream mouth 54 and liquid flow hole 57, due to liquid stream mouth 54 and liquid flow hole 57
It is respectively in eccentric setting；And oscillating plate 23 is rotated with rotary sleeve 22；Make liquid stream mouth 54 and liquid flow hole in 23 rotation process of oscillating plate
Periodically closure is generated between 57 and is opened；So that area of passage periodically changes, and then forms pressure pulse, it should
Pressure pulse can react on vibration pipe nipple 1 through oscillation short joint 17, spline housing 16 and outer tube body 15.
During generating periodically closure between liquid stream mouth 54 and liquid flow hole 57 and opening, (liquid stream mouth when being closed
54 with liquid flow hole 57 be in misaligned state when), drilling fluid runner is integrally truncated；The drilling fluid in pipe nipple 1 is vibrated simultaneously in liquid stream
It is formed and is collected under the metering function of import 34, and acted on to the right end face of piston 8, with the pressure increase of drilling fluid, pushed away
Piston 8 moves ahead (moving right), during this；Piston 8 with 13 mass motion of moving mandrel's center tap 12 and mandrel lower contact,
To be stretched out with moving mandrel 3 by top connection 4, the axial impact force of mandrel 3 is formed；The axial impact force-fitting vibrates pipe nipple 2
Pressure pulse drives coiled tubing, the static friction between coiled tubing and the borehole wall can be made to be converted into dynamic friction, and change friction side
To, thereby reduce friction caused by energy loss, play reduce frictional resistance function.Mandrel 3 is stretched out same by top connection 4
When, mandrel center tap 12 compresses disc spring 11 by push plate 9 and brings it about elastic deformation and accumulation of energy；When disc spring 11 is compressed into the limit
When, it is formed between liquid stream mouth 54 and liquid flow hole 57 when opening (when liquid stream mouth 54 and liquid flow hole 57 are in coincidence status), drilling well liquid stream
Road is integrally connected to；Drilling fluid is again introduced into through liquid stream import 34 to fluidic, at this point, the drilling hydraulic of vibration pipe nipple 1
Power is less than the tension of disc spring 11, and under the action of disc spring 11, mandrel 3 resets.
It is again introduced into drilling fluid to fluidic and is divided into two up and down being split under the action of splitter 31 again
Point.The drilling fluid of the lower part of splitter 31 does not enter back into cylinder sleeve lower flow channel 44 since cylinder sleeve lower flow channel 44 is in full liquid status, splits
The drilling fluid of part is entered in plunger shaft 42 through upper inlet opening 43 and is acted on to the front end face of oscillating piston 20 on point 31, with
The increase of pressure, push row after oscillating piston 20 to reset, during this, during this of oscillating piston 20, oscillation is lived
Drilling fluid in the rear end face extrusion piston chamber 42 of plug 20, forces the drilling fluid in the plunger shaft 42 of 20 rear end of oscillating piston by cylinder
Lower flow channel 44 is covered to be discharged.
While drilling fluid is resetted by row after the discharge of cylinder sleeve lower flow channel 44 and oscillating piston 20, oscillating piston 20 passes through work
Stopper rod 19 drives row after splined shaft 21 to reset, and since splined shaft 21 is mounted on oscillation short joint 17 by rotary sleeve 22, and revolves
Spiral trajectory 50, setting in spiral trajectory 50 are respectively arranged on the inner wall of pivoted housing 22 and on corresponding 21 circumference of splined shaft
There is rotation steel ball 51；After the drive splined shaft 21 of piston rod 19 during row, it is arranged in spiral trajectory 50 and spiral trajectory 50
Rotation steel ball 51 act under, rotary sleeve 22 starts to rotate backward, thus drive oscillating plate 23 rotate backward, to make liquid stream mouth
Periodically closure is generated between 54 and liquid flow hole 57 again and is opened.
During row resets after oscillating piston 20, the drilling fluid of part is constantly entered to through upper inlet opening 43 on splitter 31
In plunger shaft 42；At this point, the lower part of splitter 31 and in cylinder sleeve lower flow channel 44 drilling fluid a part is through lower feedback runner 41
Into lower feedback liquid flow cavity 40, another part drilling fluid is entered in lower liquid flow cavity 39.
Since lower liquid flow cavity 39 is connected to 34 tail end of liquid stream import, into lower liquid flow cavity 39 drilling fluid with continually into
Enter to the drilling fluid of liquid stream import 34 after collecting, by upper inlet opening 43 enter and in the plunger shaft 42 of 20 front end of oscillating piston not
It is disconnected to collect, so that oscillating piston 20 is not had no progeny row, and run to extreme position.
The drilling fluid in lower liquid flow cavity 39 is entered to through lower intercommunicating pore 29, left runner 45, the left runner 48 of cylinder cap and intercommunicating pore
56 enter in splined shaft centre bore 55；Then it is discharged through liquid stream mouth 54 and liquid flow hole 57, due to liquid stream mouth 54 and liquid flow hole 57
It is respectively in eccentric setting；And oscillating plate 23 is rotated with rotary sleeve 22；Make liquid stream mouth 54 and liquid flow hole in 23 rotation process of oscillating plate
Periodically closure is generated between 57 and is opened；So that area of passage periodically changes, and then forms pressure pulse, it should
Pressure pulse can react on vibration pipe nipple 1 through oscillation short joint 17, spline housing 16 and outer tube body 15, so far a work
Make circulation to complete.
The downhole hydraulic oscillator structure is simple, easy for installation, has radial dimension small, horizontal drilling stability is good, energy
The problem of effectivelying prevent backing pressure cooperates continuous pipe operation in the course of work, while in the pressure pulse of oscillation pipe nipple 2 and vibrating short
, it can be achieved that waterpower axial vibration under the dual mating reaction of the axial impact of section 1, and then can make between coiled tubing and the borehole wall
Static friction is converted into dynamic friction, and changes frictional direction, thereby reduces energy loss caused by friction, reduces frictional resistance, by
This improves the efficiency of horizontal well operations.It is used especially suitable for operations such as long horizontal, High angle and multi-branched horizontal wells.
Claims (10)
1. a kind of downhole hydraulic oscillator, it is made of vibration pipe nipple (1) and oscillation pipe nipple (2), is vibrated pipe nipple (1) and is vibrated
Pipe nipple is mutually threadedly coupled between (2), it is characterised in that: the vibration pipe nipple (1) by mandrel (3), top connection (4), under connect
Head (5), outer tube (6), transition joint (7) and piston (8) are constituted, and one end of outer tube (6) is equipped with by transition joint (7) screw thread
Lower contact (5), the other end screw thread of outer tube (6) are equipped with top connection (4), are provided with mandrel (3) in outer tube (6), mandrel (3)
One end extends to top connection (4) outer end, passes through spacer (10) on the mandrel (3) in outer tube (6) and push plate (9) is equipped with disc spring
(11)；Piston (8) are equipped with by mandrel center tap (12) and mandrel lower contact (13) on mandrel (3) in transition joint (7),
Piston (8) periphery is slidably connected with transition joint (7) inner wall；It vibrates pipe nipple (1) and passes through lower contact (5) and oscillation pipe nipple (2) spiral shell
Line connection.
2. a kind of downhole hydraulic oscillator according to claim 1, it is characterised in that: the mandrel (3) is reducer pipe
Shape body is slidably connected between mandrel (3) and top connection (4)；Divide on the circumference of the top connection (4) and transition joint (7)
It is not provided with balance hole (14).
3. a kind of downhole hydraulic oscillator according to claim 2, it is characterised in that: the mandrel center tap (12) with
Mandrel (3) is threadedly coupled；One end of mandrel center tap (12) is threadedly coupled with mandrel lower contact (13), mandrel center tap (12)
The other end and push plate (9) connect；The push plate (9) is slidably connected with outer tube (6) inner wall.
4. a kind of downhole hydraulic oscillator according to claim 1, it is characterised in that: the oscillation pipe nipple (2) is by outer
Tube body (15), spline housing (16), oscillation short joint (17), fluidic, cylinder sleeve (18), piston rod (19), oscillating piston
(20), splined shaft (21), rotary sleeve (22), oscillating plate (23) and cylinder cap (24) are constituted, and one end of outer tube body (15) and vibration are short
The lower contact (5) for saving (1) is threadedly coupled；The other end of outer tube body (15) is equipped with oscillation pipe nipple by spline housing (16) screw thread and connects
Head (17)；Outer tube body (15) interior one end is fixed with fluidic, the outer tube body (15) of fluidic side by mounting base (25)
Interior to be equipped with piston rod (19) by cylinder sleeve (18) and cylinder cap (24), one end end of piston rod (19) is installed by fixture nut
There are oscillating piston (20)；The other end of piston rod (19) extends to cylinder cap (24) outer end；Spline housing (16) and oscillation short joint
(17) splined shaft (21) are installed by rotary sleeve (22) in；On the inner wall of rotary sleeve (22) and corresponding splined shaft (21)
It is provided circumferentially about to have spiral trajectory (50), rotation steel ball (51) is provided in spiral trajectory (50)；The flower of rotary sleeve (22) side
Sliding steel ball (53) is installed by synchronizing sleeve (52) on key axis (21), splined shaft (21) is threadedly coupled with piston rod (19).
5. a kind of downhole hydraulic oscillator according to claim 4, it is characterised in that: it is arranged on the splined shaft (21)
Have splined shaft centre bore (55), has been arranged radially intercommunicating pore on splined shaft (21) circumference of splined shaft centre bore (55) one end
(56), intercommunicating pore (56) is connected to splined shaft centre bore (55).
6. a kind of downhole hydraulic oscillator according to claim 4, it is characterised in that: the rotary sleeve (22) is tubular
Body is fixed with oscillating plate (23) on one end port of rotary sleeve (22), and eccentric setting has liquid stream mouth (54) on oscillating plate (23).
7. a kind of downhole hydraulic oscillator according to claim 6, it is characterised in that: described oscillating plate (23) side
Vibrate short joint (17) centre bore in be provided with closure plate, there is liquid flow hole (57) eccentric setting on closure plate, liquid stream mouth (54) with
Liquid flow hole (57) is slidably and sealingly connected with.
8. a kind of downhole hydraulic oscillator according to claim 4, it is characterised in that: the cylinder sleeve (18) is cylinder
Body, cylinder sleeve (18) is interior to be provided with plunger shaft (42), is provided with inlet opening (43) on the cylinder sleeve (18) of plunger shaft (42) front end, living
Plug chamber (42) is connected to by upper inlet opening (43) with the fluid outlet (35) of fluidic；Cylinder sleeve (18) below plunger shaft (42)
On be provided with cylinder sleeve lower flow channel (44), one end of cylinder sleeve lower flow channel (44) is connected to fluid outlet (35)；Cylinder sleeve lower flow channel (44)
The other end be connected to plunger shaft (42).
9. a kind of downhole hydraulic oscillator according to claim 8, it is characterised in that: described cylinder sleeve (18) the circumference side
It is provided with left runner (45), the lower intercommunicating pore (29) being arranged on left runner (45) and the left plate (27) of fluidic is connected to, cylinder
Set (18) circumference other side is provided with right runner (46), the upper company being arranged on the right side plate (28) of right runner (46) and fluidic
Through-hole (30) connection.
10. a kind of downhole hydraulic oscillator according to claim 4, it is characterised in that: the cylinder cap (24) and piston
It is provided between bar (19) swivel bearing (47), is provided between the cylinder cap (24) and piston rod (19) of swivel bearing (47) side
Sealing ring, shape corresponding with the left runner (45) of cylinder sleeve (18) and right runner (46) is provided with the left stream of cylinder cap on the circumference of cylinder cap (24)
Road (48) and the right runner of cylinder cap (49), left runner (45) are connected to the left runner of cylinder cap (48), right runner (46) and the right runner of cylinder cap
(49) it is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820777637.5U CN208502663U (en) | 2018-05-24 | 2018-05-24 | A kind of downhole hydraulic oscillator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820777637.5U CN208502663U (en) | 2018-05-24 | 2018-05-24 | A kind of downhole hydraulic oscillator |
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| CN208502663U true CN208502663U (en) | 2019-02-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442883A (en) * | 2018-05-24 | 2018-08-24 | 长江大学 | A kind of downhole hydraulic oscillator |
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- 2018-05-24 CN CN201820777637.5U patent/CN208502663U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442883A (en) * | 2018-05-24 | 2018-08-24 | 长江大学 | A kind of downhole hydraulic oscillator |
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