CN108442883A - A kind of downhole hydraulic oscillator - Google Patents
A kind of downhole hydraulic oscillator Download PDFInfo
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- CN108442883A CN108442883A CN201810504863.0A CN201810504863A CN108442883A CN 108442883 A CN108442883 A CN 108442883A CN 201810504863 A CN201810504863 A CN 201810504863A CN 108442883 A CN108442883 A CN 108442883A
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- mandrel
- outer tube
- pipe nipple
- cylinder
- runner
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- 210000002445 nipple Anatomy 0.000 claims abstract description 42
- 230000010355 oscillation Effects 0.000 claims abstract description 34
- 230000007704 transition Effects 0.000 claims abstract description 18
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 98
- 239000012530 fluid Substances 0.000 claims description 57
- 239000011148 porous material Substances 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 44
- 238000009434 installation Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 4
- 230000008676 import Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention 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, and disc spring is equipped with by spacer and push plate on the mandrel in outer tube.The downhole hydraulic oscillator structure is simple, easy for installation, has radial dimension small, and horizontal drilling stability is good, the problem of can effectively prevent backing pressure, and energy loss caused by reducing friction reduces frictional resistance, which thereby enhances 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 present invention relates to a kind of downhole hydraulic oscillators, belong to technical field of petroleum downhole equipment.
Background technology
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 drilling engineering new actual requirement, 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 larger hole angle makes the frictional resistance between petroleum drilling roofbolt and the borehole wall significantly increase, 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 when sliding can be made to send brill 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 carrying
It rises, has also obtained the highest attention of vast researcher.
Invention content
It is an object of the present invention to which in view of the above shortcomings of the prior art, drill string and well can be effectively reduced by providing one kind
Frictional resistance between wall, the generation for avoiding lock of tool drilling, and then improve the downhole hydraulic oscillator of drilling efficiency.
The technical scheme is that：
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 mutually
It is threadedly coupled, it is characterised in that：The vibration pipe nipple is by mandrel, top connection, lower contact, outer tube, transition joint and piston structure
Lower contact is equipped with by transition joint screw thread at one end of, outer tube, the other end screw thread of outer tube is equipped with top connection, in outer tube
It is provided with mandrel, one end of mandrel extends to top connection outer end, and disc spring is equipped with by spacer and push plate on the mandrel in outer tube；
Piston, piston outer periphery and transition joint inner wall are equipped with by mandrel center tap and mandrel lower contact on mandrel in transition joint
It is slidably connected；Vibration pipe nipple is connect by lower contact with oscillation short-section thread.
The mandrel is reducing tubular body, is to be 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 is connected with push plate.
The push plate is slidably connected with outer tube wall.
The top connection and；It is respectively arranged with balance hole 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 admittedly
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 on one end port of rotary sleeve, eccentric setting on oscillating plate
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 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 plate；It is arranged on right plate
There is upper intercommunicating pore；It is fixed to each other by screw between intermediate plate, left plate and right plate.
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
Stream chamber is respectively communicated with the upper intercommunicating pore and fluid outlet being arranged on right plate, is 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
Chamber is respectively communicated with the lower intercommunicating pore and fluid outlet being arranged on left plate, is 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 plate corresponding with lower feedback liquid flow cavity, lower feedback runner one end and 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 cylinder, is provided with plunger shaft in cylinder sleeve, feed liquor is provided 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 left runner is connected to the lower intercommunicating pore being arranged on left plate, cylinder
The set circumference other side is provided with right runner, and right runner is connected to the upper intercommunicating pore being arranged on right plate.
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 beneficial effects of the present invention are：
The downhole hydraulic oscillator structure is simple, easy for installation, has radial dimension small, horizontal drilling stability is good, can be effective
The problem of preventing backing pressure, coordinates continuous pipe operation in the course of work, it can be achieved that waterpower axial vibration, can effectively reduce horizontal well work
Frictional resistance in industry, the efficiency for well operations of improving the standard.Make especially suitable for operations such as long horizontal, High angle and multi-branched horizontal wells
With.
Description of the drawings
Fig. 1 is the structural diagram of the present invention,
Fig. 2 is the structural schematic diagram of the vibration pipe nipple of the present invention,
Fig. 3 is the structural schematic diagram of the oscillation pipe nipple of the present invention,
Fig. 4 is the schematic cross-sectional view of the fluidic of the present invention,
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 present invention,
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 present invention,
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 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, cylinder cap it is left
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 implementation mode
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, is set 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 reducing 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 connects with the sliding of 6 inner wall of outer tube
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；It is provided with sealing ring between 8 periphery of piston and transition joint 7；To ensure 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 ensure 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 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 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 plate 28；
Intercommunicating pore 30 is provided on right plate 28；It is fixed to each other by screw between intermediate plate 26, left plate 27 and right plate 28.
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 are the fluid outlet 35 of V-shaped, liquid stream import 34 to be 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 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 36 side of upper liquid flow cavity, with upper feedback
Feedback runner 38 is provided on 37 corresponding left plate 27 of liquid flow cavity, upper 38 one end of feedback runner connects with upper feedback liquid flow cavity 37
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 40 corresponding right plate 28 of liquid flow cavity, lower 41 one end of feedback runner connects with lower feedback liquid flow cavity 40
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 fluid outlet 35 by upper inlet opening 43；It is provided with cylinder sleeve lower flow channel 44, cylinder sleeve 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 left runner 45（The outer tube body with the groove on the left of 18 circumference of cylinder sleeve of left runner 45
15 inner wall is formed）, left runner 45 is connected to the lower intercommunicating pore 29 being arranged on left plate 27, and the 18 circumference other side of cylinder sleeve is provided with
Right runner 46（The inner wall of outer tube body 15 with the groove on the right side of 18 circumference of cylinder sleeve of right runner 46 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 fixing 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 ensure the sealing in cylinder sleeve 18.On the circumference of cylinder cap 24 with cylinder sleeve 18
Left runner 45 and right runner 46 correspond to shape and 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 runner 49 of 46 cylinder cap of right 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 ensure to rotate
The flexibility of 22 rotation of set.
Sliding steel ball 53 is equipped with by synchronizing sleeve 52 on the splined shaft 21 of 22 side of rotary sleeve, is used for the branch of splined shaft 21
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.
It is provided with splined shaft centre bore 55 on splined shaft 21, it is radial on 21 circumference of splined shaft of 55 one end of splined shaft centre bore
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 liquid flow hole 57（Intermittent Contact connects）.
When the downhole hydraulic oscillator coordinates 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 liquid stream import 34 of the drilling fluid through fluidic entered in oscillation pipe nipple 2, which enters to, penetrates
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, is then projected 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 31 lower part of splitter 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（It is 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 of setting in spiral trajectory 50 and spiral trajectory 50
Under 51 effects, rotary sleeve 22 starts to rotate, and thus oscillating plate 23 is driven to rotate, to make to be produced between liquid stream mouth 54 and liquid flow hole 57
It is raw to be periodically closed and open.
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 a drilling fluid 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.
Since upper feedback liquid flow cavity 37 is connected to 34 tail end of liquid stream import, the drilling fluid into upper feedback liquid flow cavity 37 and source
Source constantly enter to liquid stream import 34 drilling fluid collect after, it is continuous in the rear end face of oscillating piston 20 by cylinder sleeve lower flow channel 44
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 in eccentric setting respectively；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
It is generated between 57 and is periodically closed and opens；So that area of passage periodically changes, and then forms pressure pulse, it should
Pressure pulse can be reacted on through vibrating short joint 17, spline housing 16 and outer tube body 15 on vibration pipe nipple 1.
It is generated between liquid stream mouth 54 and liquid flow hole 57 during being periodically closed and open, when being closed（Liquid stream mouth
54 with liquid flow hole 57 be in misaligned state when）, drilling fluid runner integrally blocked；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, increased with the pressure of drilling fluid, push away
Piston 8 moves ahead（It moves right）, during this；Piston 8 with 13 mass motion of moving mandrel's center tap 12 and mandrel lower contact,
To be stretched out by top connection 4 with moving mandrel 3, 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 energy loss caused by thereby reducing friction plays the function of reducing frictional resistance.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, when forming unlatching between liquid stream mouth 54 and liquid flow hole 57（When liquid stream mouth 54 is in coincidence status with liquid flow hole 57）, 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 under the action of splitter 31, being split again
Point.The drilling fluid of 31 lower part of splitter does not enter back into since cylinder sleeve lower flow channel 44 is in full liquid status in cylinder sleeve lower flow channel 44, 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, row resets after pushing oscillating piston 20, and 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
Row resets after stopper rod 19 drives splined shaft 21, since splined shaft 21 is mounted on oscillation short joint 17 by rotary sleeve 22, and revolves
It is respectively arranged with spiral trajectory 50 on the inner wall of pivoted housing 22 and on corresponding 21 circumference of splined shaft, is arranged in spiral trajectory 50
There is rotation steel ball 51；After the drive splined shaft 21 of piston rod 19 during row, the setting 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
It is generated again between 54 and liquid flow hole 57 and is periodically closed and opens.
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, 31 lower part of splitter and in cylinder sleeve lower flow channel 44 a drilling fluid part is through lower feedback runner 41
Into lower feedback liquid flow cavity 40, another part drilling fluid enters 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 in eccentric setting respectively；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
It is generated between 57 and is periodically closed and opens；So that area of passage periodically changes, and then forms pressure pulse, it should
Pressure pulse can be reacted on through vibrating short joint 17, spline housing 16 and outer tube body 15 on vibration pipe nipple 1, so far a work
Make cycle 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 coordinates 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, and energy loss caused by thereby reducing 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 by vibration pipe nipple（1）With oscillation pipe nipple（2）It constitutes, vibrates pipe nipple（1）And oscillation
Pipe nipple（2）Between be mutually threadedly coupled, 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）It constitutes, outer tube（6）One end pass through transition joint（7）Screw thread is equipped with
Lower contact（5）, outer tube（6）The other end screw thread top connection is installed（4）, outer tube（6）Inside it is provided with mandrel（3）, mandrel（3）'s
One end extends to top connection（4）Outer end, outer tube（6）Interior mandrel（3）On pass through spacer（10）And push plate（9）Disc spring is installed
（11）；Transition joint（7）Interior mandrel（3）It is upper to pass through mandrel center tap（12）With mandrel lower contact（13）Piston is installed（8）,
Piston（8）Periphery and transition joint（7）Inner wall is slidably connected；Vibrate pipe nipple（1）Pass through lower contact（5）With oscillation pipe nipple（2）Spiral shell
Line connects.
2. a kind of downhole hydraulic oscillator according to claim 1, it is characterised in that：The mandrel（3）For reducer pipe
Shape body, mandrel（3）With top connection（4）Between to be slidably connected；The top connection（4）And transition joint（12）Circumference on point
Balance hole is not provided with it（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）It is threadedly coupled；Mandrel center tap（12）One end and mandrel lower contact（13）It is threadedly coupled, mandrel center tap（12）'s
The other end and push plate（9）It connects；The push plate（9）With outer tube（6）Inner wall is slidably connected.
4. a kind of downhole hydraulic oscillator according to claim 1, it is characterised in that：The oscillation 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）It constitutes, outer tube body（15）One end and vibration it is short
Section（1）Lower contact（5）It is threadedly coupled；Outer tube body（15）The other end pass through spline housing（16）Screw thread is equipped with oscillation pipe nipple and connects
Head（17）；Outer tube body（15）Interior one end passes through mounting base（25）It is fixed with fluidic, the outer tube body of fluidic side（15）
Inside pass through cylinder sleeve（18）And cylinder cap（24）Piston rod is installed（19）, piston rod（19）One end end installed by fixing nut
There is oscillating piston（20）；Piston rod（19）The other end extend to cylinder cap（24）Outer end；Spline housing（16）With oscillation short joint
（17）Inside pass through rotary sleeve（22）Splined shaft is installed（21）；Rotary sleeve（22）Inner wall on and corresponding splined shaft（21）
It is provided circumferentially about to have spiral trajectory（50）, spiral trajectory（50）Inside it is provided with rotation steel ball（51）；Rotary sleeve（22）The flower of side
Key axis（21）On pass through synchronizing sleeve（52）Sliding steel ball is installed（53）, splined shaft（21）With piston rod（19）It is threadedly coupled.
5. a kind of downhole hydraulic oscillator according to claim 4, it is characterised in that：The splined shaft（21）Upper setting
There is splined shaft centre bore（55）, splined shaft centre bore（55）The splined shaft of one end（21）Intercommunicating pore is radially provided on circumference
（56）, intercommunicating pore（56）With splined shaft centre bore（55）Connection.
6. a kind of downhole hydraulic oscillator according to claim 4, it is characterised in that：The rotary sleeve（22）For tubular
Body, rotary sleeve（22）One end port on be fixed with oscillating plate（23）, oscillating plate（23）Upper eccentric setting has liquid stream mouth（54）.
7. a kind of downhole hydraulic oscillator according to claim 6, it is characterised in that：The oscillating plate（23）Side
Vibrate short joint（17）Centre bore in be provided with closure plate, eccentric setting has liquid flow hole on closure plate（57）, liquid stream mouth（54）With
Liquid flow hole（57）It 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）For cylinder
Body, cylinder sleeve（18）Inside it is provided with plunger shaft（42）, plunger shaft（42）The cylinder sleeve of front end（18）On be provided with inlet opening（43）, living
Fill in chamber（42）Pass through upper inlet opening（43）With the fluid outlet of fluidic（35）Connection；Plunger shaft（42）The cylinder sleeve of lower section（18）
On be provided with cylinder sleeve lower flow channel（44）, cylinder sleeve lower flow channel（44）One end and fluid outlet（35）Connection；Cylinder sleeve lower flow channel（44）
The other end and plunger shaft（42）Connection.
9. a kind of downhole hydraulic oscillator according to claim 8, it is characterised in that：The cylinder sleeve（18）Circumference side
It is provided with left runner（45）, left runner（45）With the left plate of fluidic（27）The lower intercommunicating pore of upper setting（29）Connection, cylinder
Set（18）The circumference other side is provided with right runner（46）, right runner（46）With the right plate of fluidic（28）The upper company of upper setting
Through-hole（30）Connection.
10. a kind of downhole hydraulic oscillator according to claim 4, it is characterised in that：The cylinder cap（24）With piston
Bar（19）Between be provided with swivel bearing（47）, swivel bearing（47）The cylinder cap of side（24）With piston rod（19）Between be provided with
Sealing ring, cylinder cap（24）Circumference on cylinder sleeve（18）Left runner（45）With right runner（46）Corresponding shape is provided with the left stream of cylinder cap
Road（48）With the right runner of cylinder cap（49）, left runner（45）With the left runner of cylinder cap（48）Connection, right runner（46）With the right runner of cylinder cap
（49）Connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810504863.0A CN108442883B (en) | 2018-05-24 | 2018-05-24 | Underground hydraulic oscillator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810504863.0A CN108442883B (en) | 2018-05-24 | 2018-05-24 | Underground hydraulic oscillator |
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| CN108442883B CN108442883B (en) | 2023-06-23 |
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| CN115247556A (en) * | 2022-08-03 | 2022-10-28 | 西南石油大学 | Oscillation pulse cavitation device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779531A (en) * | 2019-03-07 | 2019-05-21 | 长江大学 | A kind of fluidic oscillation double direction impulse device |
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| CN115247556A (en) * | 2022-08-03 | 2022-10-28 | 西南石油大学 | Oscillation pulse cavitation device |
| CN115247556B (en) * | 2022-08-03 | 2023-05-05 | 西南石油大学 | Oscillating pulse cavitation device |
| CN116201482A (en) * | 2023-02-27 | 2023-06-02 | 湖北龙脉宜和石油科技有限公司 | Screw type underground hydraulic oscillator |
| CN116201482B (en) * | 2023-02-27 | 2024-03-12 | 湖北龙脉宜和石油科技有限公司 | Screw type underground hydraulic oscillator |
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