CN106014316A - Shock-resisting downhole screw type pulse generator - Google Patents
Shock-resisting downhole screw type pulse generator Download PDFInfo
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- CN106014316A CN106014316A CN201610361558.1A CN201610361558A CN106014316A CN 106014316 A CN106014316 A CN 106014316A CN 201610361558 A CN201610361558 A CN 201610361558A CN 106014316 A CN106014316 A CN 106014316A
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- 238000012856 packing Methods 0.000 claims description 23
- 230000035939 shock Effects 0.000 claims description 21
- 230000007423 decrease Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 abstract description 3
- 210000004907 gland Anatomy 0.000 abstract 3
- 238000005553 drilling Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
- E21B47/20—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry by modulation of mud waves, e.g. by continuous modulation
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- Mining & Mineral Resources (AREA)
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- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Details Of Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention provides a shock-resisting downhole screw type pulse generator which comprises an outer shell, a lock nut, a gland nut, an upper thrust bearing, a lower thrust bearing, a flexible rod, a stator rubber tube, a hollow rotor, a movable valve disk and a fixed valve disk. The flexible rod is arranged on the inner side of the outer shell and comprises a disk-shaped structure; a plurality of tap holes are formed in the disk-shaped structure; the lower thrust bearing is arranged below the disk-shaped structure; the upper thrust bearing is arranged on the disk-shaped structure; the gland nut is arranged on the upper thrust bearing; the lock nut is arranged on the gland nut; the hollow rotor is arranged on the inner side of the stator rubber tube; the lower end of the flexible rod is fixed to the hollow rotor; and the movable valve disk is located below the hollow rotor. The interval between the movable valve disk and the fixed valve disk of the shock-resisting downhole screw type pulse generator can be adjusted, and installation and adjustment of the whole machine are facilitated.
Description
Technical field
The invention belongs to petroleum technology field, especially relate to a kind of shock resistance down-hole screw pulse generator.
Background technology
During oil drilling directional drilling, down-hole motor providing rotary power for drill bit, drill string is static relative to the borehole wall.The contact pressure of the borehole wall is made drill string axial rub resistance increase by drill string, rotation torque increases.Drill string frictional resistance runs up to certain numerical value, then make the gravity (the pressure of the drill) of DHA can not be effectively passed to drill bit, it is impossible to normally to creep into, and drill string limitation may be caused to destroy and cause down-hole accident simultaneously.
During drilling well, the pressure oscillation within drill string can be that drill string provides vibration, so that the static friction on drilling tool is longitudinal with the borehole wall becomes dynamic friction, effectively reduces the frictional resistance between drill string and well, improves the effectiveness of load transfer in drilling process.Pressure oscillation main source within drill string is the uneven feed flow of surface mud pump at present.Being affected by BHA and drilling depth, the frequency of pressure oscillation and amplitude are uncontrollable with effective utilization.Downhole pulser additionally can provide periodic pressure fluctuation for drill string inside, thus effectively overcome the frictional resistance between extended reach well and drillstring in horizontal section and the borehole wall, reduce the moment of torsion between drill string and the borehole wall, it is to avoid the generation of lock of tool drilling, drilling efficiency can be increased substantially.
Use screw rod as the pulse generator of dynamical element, by screw motor as power source, drive valve disc to rotate, make overflow section amass generating period change, periodic pressure fluctuation can be produced, there is the feature of simple in construction.But the screw pulse generator of routine contacts with dynamic valve disc direct friction at work owing to determining valve disc, valve disc material generally high by the hardness such as hard alloy or pottery, that fragility is strong is made, have the disadvantage in that 1, rotor lacks radially mechanical restriction, have enough to meet the need along central axis while rotation in stator case, drive to produce between valve disc and uneven radially contact with impact, reduction of service life.2, rotor lacks axial mechanical restriction, can produce periodic vibration along axis, thus drive and produce uneven radial impact, reduction of service life between valve disc under the effect of periodic pressure change.
Summary of the invention
In view of this, it is contemplated that propose a kind of shock resistance down-hole screw pulse generator, it is prevented effectively from and axially positions inefficacy because of what periodicity axially loaded caused.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
nullA kind of shock resistance down-hole screw pulse generator，Including shell、Locking nut、Clamp nut、Up-thrust bearing、Lower thrust-bearing、Rods、Stator packing element、Hollow rotor、Dynamic valve disc、Quiet valve disc，Described rods is arranged at the inner side of described shell，Rods includes disc-shaped structure，This disc-shaped structure is provided with some tap holes，Described lower thrust-bearing is arranged at the lower section of this disc-shaped structure，Described up-thrust bearing is arranged at the top of this disc-shaped structure，Described clamp nut is arranged at the top of up-thrust bearing，Described locking nut is arranged at the top of clamp nut，Described hollow rotor is arranged at the inner side of described stator packing element，The lower end of described rods is fixed on hollow rotor，Described dynamic valve disc is positioned at the lower section of hollow rotor，Described quiet valve disc is arranged at the lower section of dynamic valve disc，Described seat of valve is arranged at the lower section of quiet valve disc.Described up-thrust bearing is identical with the structure of lower thrust-bearing.
Further, described rods includes disc-shaped structure, rod-like structure, and disc-shaped structure is fixed on the top of rod-like structure, and the bottom of described rod-like structure is fixed on hollow rotor；The top of described rod-like structure is cone shape；Described tap hole annular spread is on described disc-shaped structure；The top and bottom of described disc-shaped structure are equipped with stepped hole.Described stepped hole is fixed for the spacing of bearing.
Further, described shell includes top connection, upper urceolus, housing, lower contact, described top connection is arranged at the top of urceolus, upper urceolus is arranged at the outside of described rods, described housing is positioned at the lower section of described upper urceolus, housing is arranged at the outside of described stator packing element, and described lower contact is positioned at the lower section of housing.
Further, the inwall of described upper urceolus being provided with spill draw-in groove, described lower thrust-bearing is positioned at the inner side of this spill draw-in groove；Described up-thrust bearing and described lower thrust-bearing are by spacing for the disc-shaped structure of the rods inner side being fixed on described spill draw-in groove.
Further, described dynamic valve disc is the rotary structure of the stepped increasing diameter in outside, and dynamic valve disc is provided with dynamic valve disc eccentric orfice；Described quiet valve disc is the rotary structure that the stepped diameter in outside successively decreases, and the center of quiet valve disc is provided with quiet valve disc through hole.
Further, the lower section of described quiet valve disc is provided with seat of valve, and described seat of valve is connected with described lower contact；Described seat of valve is the rotary structure that the stepped diameter in outside successively decreases, and the center of seat of valve is provided with through hole, and this through hole is identical with the diameter of described quiet valve disc through hole.
Further, adjustment pad it is provided with between described seat of valve and lower contact；Described adjustment pad is circular ring.The outside of described seat of valve is provided with groove, is provided with sealing ring in groove.
Further, being left-hand screw structure outside the upper end of described hollow rotor, lower end outside is column structure；The top and bottom of described hollow rotor are equipped with blind hole；The length of the described blind hole being positioned at hollow rotor upper end is more than the length of the described blind hole being positioned at hollow rotor lower end；Described rods is placed through the blind hole of hollow rotor upper end, and is fixed on hollow rotor；The hole wall of the described blind hole being positioned at hollow rotor lower end is provided with some through holes perpendicular with axial direction；The inner side of described stator packing element is internal coiling shape structure.
Further, the left-hand screw structure of described hollow rotor engages each other with the internal coiling shape structure of stator packing element.Described stator packing element is one-body molded with housing.
Further, the centre position of described locking nut is provided with through hole；The upper end of the inner side of described locking nut is pyramidal structure；The centre position of described clamp nut is provided with through hole；The lower end of described clamp nut is provided with flange.
Relative to prior art, shock resistance down-hole of the present invention screw pulse generator has a following advantage:
(1) dynamic valve disc and the hollow rotor of shock resistance down-hole of the present invention screw pulse generator is retrained by rods, its axially-movable suffers restraints, certain interval is there is with quiet valve disc, prevent the two from directly contacting, avoid and produce uneven axially contact impact between that can cause under the effect of periodic pressure change and quiet valve disc, avoid causing dynamic valve disc and the impact grinding of quiet valve disc, run stability and reliability can be improved；Dynamic valve disc and hollow rotor are retrained by rods, and its radial motion is restricted, it is to avoid and produce uneven radial impact between quiet valve disc, cause the two eccentric wear, and the most anti-stop valve disc collides with enclosure interior damage in circular motion；Axial constraint to rods, have employed double nut loosening configuration (locking nut, clamp nut), can be prevented effectively from and axially position inefficacy because of what periodicity axially loaded caused.
(2) the dynamic valve disc of shock resistance down-hole of the present invention screw pulse generator and the gap adjustable of quiet valve disc, beneficially whole machine installation and debugging.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the shock resistance down-hole screw pulse generator described in the embodiment of the present invention；
Fig. 2 is the schematic diagram in the rods A-A face described in the embodiment of the present invention；
Schematic diagram when Fig. 3 is eccentric orfice and the coincidence of quiet valve disc through hole of the dynamic valve disc described in the embodiment of the present invention；
Schematic diagram when Fig. 4 is the eccentric orfice of the dynamic valve disc described in the embodiment of the present invention and quiet valve disc through hole staggers.
Description of reference numerals:
1-top connection；The upper urceolus of 2-；3-locking nut；4-clamp nut；5-up-thrust bearing；6-lower thrust-bearing；7-rods；8-housing；9-stator packing element；10-hollow rotor；11-moves valve disc；The quiet valve disc of 12-；13-seat of valve；14-adjusts pad；15-sealing ring；16-lower contact；17-moves valve disc eccentric orfice；18-quiet valve disc through hole.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
In describing the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, the feature defining " first ", " second " etc. can express or implicitly include one or more this feature.In describing the invention, except as otherwise noted, " multiple " are meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood by concrete condition.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
nullAs Figure 1-4，A kind of shock resistance down-hole screw pulse generator，Including shell、Locking nut 3、Clamp nut 4、Up-thrust bearing 5、Lower thrust-bearing 6、Rods 7、Stator packing element 9、Hollow rotor 10、Dynamic valve disc 11、Quiet valve disc 12，Described rods 7 is arranged at the inner side of described shell，Rods 7 includes disc-shaped structure，This disc-shaped structure is provided with some tap holes，Described lower thrust-bearing 6 is arranged at the lower section of this disc-shaped structure，Described up-thrust bearing 5 is arranged at the top of this disc-shaped structure，Described clamp nut 4 is arranged at the top of up-thrust bearing 5，Described locking nut 3 is arranged at the top of clamp nut 4，Described hollow rotor 10 is arranged at the inner side of described stator packing element 9，The lower end of described rods 7 is fixed on hollow rotor 10，Described dynamic valve disc 11 is positioned at the lower section of hollow rotor 10，Described quiet valve disc 12 is arranged at the lower section of dynamic valve disc 11，Described seat of valve 13 is arranged at the lower section of quiet valve disc 12.
Described rods 7 includes disc-shaped structure, rod-like structure, and disc-shaped structure is fixed on the top of rod-like structure, and the bottom of described rod-like structure is fixed on hollow rotor 10；The top of described rod-like structure is cone shape；Described tap hole annular spread is on described disc-shaped structure；The top and bottom of described disc-shaped structure are equipped with stepped hole.
Described shell includes top connection 1, upper urceolus 2, housing 8, lower contact 16, described top connection 1 is arranged at the top of urceolus 2, upper urceolus 2 is arranged at the outside of described rods 7, described housing 8 is positioned at the lower section of described upper urceolus 2, housing 8 is arranged at the outside of described stator packing element 9, and described lower contact 16 is positioned at the lower section of housing 8.
Being provided with spill draw-in groove on the inwall of described upper urceolus 2, described lower thrust-bearing 6 is positioned at the inner side of this spill draw-in groove；Described up-thrust bearing 5 and described lower thrust-bearing 6 are by spacing for the disc-shaped structure of rods 7 inner side being fixed on described spill draw-in groove.
Described dynamic valve disc 11 is the rotary structure of the stepped increasing diameter in outside, and dynamic valve disc 11 is provided with dynamic valve disc eccentric orfice 17；Described quiet valve disc 12 is the rotary structure that the stepped diameter in outside successively decreases, and the center of quiet valve disc 12 is provided with quiet valve disc through hole 18.
The lower section of described quiet valve disc 12 is provided with seat of valve 13, and described seat of valve 13 is connected with described lower contact 16；Described seat of valve 13 is the rotary structure that the stepped diameter in outside successively decreases, and the center of seat of valve 13 is provided with through hole, and this through hole is identical with the diameter of described quiet valve disc through hole 18.
Adjustment pad 14 it is provided with between described seat of valve 13 and lower contact 16；Described adjustment pad 14 is in circular ring.
Being left-hand screw structure outside the upper end of described hollow rotor 10, lower end outside is column structure；The top and bottom of described hollow rotor 10 are equipped with blind hole；The length of the described blind hole being positioned at hollow rotor 10 upper end is more than the length of the described blind hole being positioned at hollow rotor 10 lower end；Described rods 7 is placed through the blind hole of hollow rotor 10 upper end, and is fixed on hollow rotor 10；The hole wall of the described blind hole being positioned at hollow rotor 10 lower end is provided with some through holes perpendicular with axial direction；The inner side of described stator packing element 9 is internal coiling shape structure.
The left-hand screw structure of described hollow rotor 10 engages each other with the internal coiling shape structure of stator packing element 9.
The centre position of described locking nut 3 is provided with through hole；The upper end of the inner side of described locking nut 3 is pyramidal structure；The centre position of described clamp nut 4 is provided with through hole；The lower end of described clamp nut 4 is provided with flange.
The upper end of described top connection 1 is box, and lower end is pin thread, and top connection 1 is the cylinder-like structure being internally provided with two ends slightly middle thin shoulder hole；The upper end of upper urceolus 2 is box, and lower end is pin thread, and upper urceolus 2 is the cavity cylinder-like structure of tapered of bottom inner portion；The cavity inside of upper urceolus 2 is provided with stepped throughhole, is box screw thread in the middle part of this through hole, and cavity bottom is provided with spill draw-in groove, for spacing lower thrust-bearing 6；Locking nut 3 is internal tapered of upper end, and lower end is internally provided with through hole, and the cylinder-like structure that outside is pin thread screw thread；The centre of clamp nut 4 is provided with through hole, and bottom is provided with flange, and clamp nut 4 is the outside cylinder-like structure for pin thread screw thread；Up-thrust bearing 5 is identical with the structure of lower thrust-bearing 6, all it is made up of with retainer thrust assemblies a blowout patche, bearing race, a rolling element, Main Function is subject to the side force produced during bending load and the drill bit rotation that rotor causes as planetary motion, and drilling fluid is played metering function by up-thrust bearing 5；Rods 7 is special-shaped rod-like structure, and top is cone flow-guiding structure, is the disc-shaped structure of limited location projection, is uniformly distributed several tap holes around its center below cone, and its main body is elongated rod-shaped, and end is screw thread pin thread.Housing 8 be upper end be box, lower end be the cavity cylinder-like structure of pin thread；Stator packing element 9 is endoporus helical hollow cylindrical structure, and inside is fixed with internal coiling shape passage；Housing 8 is formed in one with stator packing element 9；Hollow rotor 10 is for left-handed spiro structure outside upper end, lower end outside is column structure, the top and bottom of hollow rotor 10 are equipped with blind hole, and upper end blind hole is longer and inner bottom part is box screw thread, and lower end blind hole is shorter and on hole wall, uniform being perpendicular to axial crosses opening；Hollow rotor 10 assemble with stator packing element 9 after can along their contact point formed a series of continuous print, conjugation, engage annular seal space, under the liquid effects with pressure energy, along with annular seal space formation, change and disappear, rotor can be forced to move the most continuously；Dynamic valve disc 11 for outside diametrically increase stepped, be internally provided with the rotary structure of dynamic valve disc eccentric orfice 17；The stepped rotary structure that quiet valve disc 12 reduces for diameter, is provided centrally with quiet valve disc through hole 18, and the diameter of quiet valve disc through hole 18 is consistent with seat of valve 13 central through hole diameter；Seat of valve 13 is outside stepped and the hollow rotary structure that from up to down successively decreases of diameter, and upper end is internally provided with shoulder hole, and internal tapered of lower end, outer end, middle part is pin thread screw thread, is connected with the box screw thread of lower contact 16；Adjusting pad 14 is flat circular ring；Lower contact 16 for the outside pin thread in upper end internal be pin thread and the cylinder-like structure being internally provided with shoulder hole for box, lower end, the internal box in upper end is threadeded with seat of valve lower end pin thread, and lower end pin thread screw thread is used for connecting drilling tool.
During installation, dynamic valve disc 11 top ledge is processed by hot charging and is connected with the bottom centre hole of hollow rotor 10；Hollow rotor 10 is installed with in stator packing element 9；Lower thrust-bearing 6 is installed in upper urceolus 2 lower recess, through lower thrust-bearing 6 and the middle emptying aperture of hollow rotor 10 bottom rods 7；Up-thrust bearing 5 is installed on the upside of the spacing end face of rods 7；Clamp nut 4 box internal with upper urceolus 2 is threadeded；Locking nut 3 box internal with upper urceolus 2 is threadeded；By screwing the linking screw thread of the two, by internal each assembly positioning compression；Upper urceolus 2 lower end pin thread is connected with housing 8 upper end box, will threaded with box bottom hollow rotor 10 bottom rods 7 simultaneously；Upper urceolus 2 upper end box is connected with top connection 1 upper end pin thread；Move valve disc 11 bottom face actual range to housing 8 bottom face with vernier caliper measurement, measure quiet valve disc 12 actual (real) thickness, the outer edge thickness of seat of valve 13 and the physical length of lower contact 16 upper end pin thread screw thread；The thickness adjusting pad 14 is calculated on the basis of guarantee is moved and left no more than 0.5mm gap between valve disc 11 bottom face and quiet valve disc 12 top end face；Two sealing rings 15 are arranged in seat of valve 13 lower recess；Quiet valve disc 12 lower end bossing is connected by hot charging process with seat of valve 13 top upper shoulder hole；Adjustment pad 14 is placed in seat of valve 13 pin thread threaded tip；In the middle part of seat of valve 13, pin thread screw thread in outer end is connected with the box screw thread of lower contact 16；The outside pin thread in lower contact 16 upper end is connected with pin thread bottom housing 8.
Taper thread in each connection is Special seal screw thread；The female thread at top connection 1 top is that standard drill pipe is connected screw thread with external screw thread bottom lower contact 16, is used for connecting drilling tool.
After liquid enters described shock resistance down-hole screw pulse generator by top connection 1, liquid is flowed into, by the interior bone of top connection 1, the water conservancy diversion annular space that rods 7 is formed, hollow rotor 10 cycle in stator packing element 9 is driven to rotate under the effect of hydraulic shock, hollow rotor 10 rotates in stator packing element 9 simultaneously, makes periodically to overlap between valve disc eccentric orfice 17 and quiet valve disc through hole 18 and stagger；Hollow rotor 10 drives rods 7 to rotate.Rods 7 not only limit the axial vibration of dynamic valve disc 11, also limit its radial displacement, to 10 1 centering forces of hollow rotor, reduces the eccentric wear of dynamic valve disc 11；Up-thrust bearing 5, lower thrust-bearing 6 rotate along with rods 7 rotates, and not only limit the axial displacement of hollow rotor 10, also limit its axial vibration and impact；When the dynamic valve disc eccentric orfice 17 of dynamic valve disc 11 and quiet valve disc through hole 18 overlap, as shown in Figure 3, area of passage is maximum, and the liquid of entering tool can flow into lower contact 16 via after dynamic valve disc eccentric orfice 17 and quiet valve disc through hole 18 by seat of valve 13 through hole, and the pressure that now tool interior produces is minimum；When dynamic valve disc eccentric orfice 17 and quiet valve disc through hole 18 stagger, as shown in Figure 4, the area that the liquid of entering tool passes through diminishes, and the pressure that now tool interior produces becomes big；Dynamic valve disc eccentric orfice 17 and quiet valve disc through hole 18 periodically overlap and stagger the change that area of passage can be made to circulate, the pressure generating period change in instrument, thus produce the vibration on circumferencial direction.
No more than 0.5mm gap is left between described dynamic valve disc 11 bottom face and quiet valve disc 12 top end face；By adjusting flow, thus it is possible to vary the velocity of rotation of rods 7, pulsating pressure frequency can be changed；By adjusting the sectional area of flowing hole on dynamic valve disc 11 and quiet valve disc 12, pulsating pressure amplitude can be changed.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. a shock resistance down-hole screw pulse generator, it is characterised in that: include shell, locking
Nut (3), clamp nut (4), up-thrust bearing (5), lower thrust-bearing (6), rods
(7), stator packing element (9), hollow rotor (10), dynamic valve disc (11), quiet valve disc (12),
Described rods (7) is arranged at the inner side of described shell, and rods (7) includes disc-shaped structure,
This disc-shaped structure is provided with some tap holes, and described lower thrust-bearing (6) is arranged at this disk
The lower section of shape structure, described up-thrust bearing (5) is arranged at the top of this disc-shaped structure, described
Clamp nut (4) be arranged at the top of up-thrust bearing (5), described locking nut (3) sets
Being placed in the top of clamp nut (4), described hollow rotor (10) is arranged at described stator packing element
(9) inner side, the lower end of described rods (7) is fixed on hollow rotor (10), described
Dynamic valve disc (11) is positioned at the lower section of hollow rotor (10), and described quiet valve disc (12) is arranged at dynamic valve
The lower section of dish (11), described seat of valve (13) is arranged at the lower section of quiet valve disc (12).
Shock resistance down-hole the most according to claim 1 screw pulse generator, it is characterised in that:
Described rods (7) includes disc-shaped structure, rod-like structure, and disc-shaped structure is fixed on shaft-like knot
The top of structure, the bottom of described rod-like structure is fixed on hollow rotor (10)；Described shaft-like knot
The top of structure is cone shape；Described tap hole annular spread is on described disc-shaped structure；Described
The top and bottom of disc-shaped structure be equipped with stepped hole.
Shock resistance down-hole the most according to claim 1 and 2 screw pulse generator, its feature
It is: described shell includes top connection (1), upper urceolus (2), housing (8), lower contact (16),
Described top connection (1) is arranged at the top of urceolus (2), and upper urceolus (2) is arranged at described
The outside of rods (7), described housing (8) is positioned at the lower section of described upper urceolus (2), shell
Body (8) is arranged at the outside of described stator packing element (9), and described lower contact (16) is positioned at housing
(8) lower section.
Shock resistance down-hole the most according to claim 3 screw pulse generator, it is characterised in that:
Being provided with spill draw-in groove on the inwall of described upper urceolus (2), described lower thrust-bearing (6) is positioned at
The inner side of this spill draw-in groove；Described up-thrust bearing (5) and described lower thrust-bearing (6) are by soft
The spacing inner side being fixed on described spill draw-in groove of disc-shaped structure of property bar (7).
Shock resistance down-hole the most according to claim 1 and 2 screw pulse generator, its feature
It is: described dynamic valve disc (11) is the rotary structure of the stepped increasing diameter in outside, dynamic valve
Dish (11) is provided with dynamic valve disc eccentric orfice (17)；Described quiet valve disc (12) is that outside is stepped
The rotary structure that successively decreases of diameter, the center of quiet valve disc (12) is provided with quiet valve disc through hole (18).
Shock resistance down-hole the most according to claim 5 screw pulse generator, it is characterised in that:
The lower section of described quiet valve disc (12) is provided with seat of valve (13), described seat of valve (13) and institute
The lower contact (16) stated is connected；Described seat of valve (13) is that the stepped diameter in outside successively decreases
Rotary structure, the center of seat of valve (13) is provided with through hole, this through hole and described quiet valve disc
The diameter of through hole (18) is identical.
Shock resistance down-hole the most according to claim 6 screw pulse generator, it is characterised in that:
Adjustment pad (14) it is provided with between described seat of valve (13) and lower contact (16)；Described tune
Whole pad (14) is in circular ring.
Shock resistance down-hole the most according to claim 1 and 2 screw pulse generator, its feature
Being: for left-hand screw structure outside the upper end of described hollow rotor (10), lower end outside is cylinder knot
Structure；The top and bottom of described hollow rotor (10) are equipped with blind hole；Described is positioned at hollow rotor
(10) length of the blind hole of upper end is more than the length of the described blind hole being positioned at hollow rotor (10) lower end；
Described rods (7) is placed through the blind hole of hollow rotor (10) upper end, and is fixed on middle idle running
On son (10)；The hole wall of the described blind hole being positioned at hollow rotor (10) lower end be provided with some with
The through hole that axial direction is perpendicular；The inner side of described stator packing element (9) is internal coiling shape structure.
Shock resistance down-hole the most according to claim 8 screw pulse generator, it is characterised in that:
The left-hand screw structure of described hollow rotor (10) is mutual with the internal coiling shape structure of stator packing element (9)
Engagement.
Shock resistance down-hole the most according to claim 1 screw pulse generator, it is characterised in that:
The centre position of described locking nut (3) is provided with through hole；The inner side of described locking nut (3)
Upper end is pyramidal structure；The centre position of described clamp nut (4) is provided with through hole；Described pressure
The lower end of jack panel (4) is provided with flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610361558.1A CN106014316B (en) | 2016-05-26 | 2016-05-26 | Shock resistance underground screw impulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610361558.1A CN106014316B (en) | 2016-05-26 | 2016-05-26 | Shock resistance underground screw impulse generator |
Publications (2)
| Publication Number | Publication Date |
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| CN106014316A true CN106014316A (en) | 2016-10-12 |
| CN106014316B CN106014316B (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610361558.1A Active CN106014316B (en) | 2016-05-26 | 2016-05-26 | Shock resistance underground screw impulse generator |
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| CN107605418A (en) * | 2017-10-27 | 2018-01-19 | 中国石油集团渤海钻探工程有限公司 | A kind of coiled tubing waterpower draws crawl device |
| CN111322279A (en) * | 2020-04-24 | 2020-06-23 | 湖南科技大学 | Pneumatic piston push type lift pump |
| EP3601712A4 (en) * | 2017-03-28 | 2020-12-09 | National Oilwell DHT, L.P. | Valves for actuating downhole shock tools in connection with concentric drive systems |
| CN113187455A (en) * | 2021-05-28 | 2021-07-30 | 长江大学 | Pulse continuous jet flow hot melting combustible ice mining tool |
| CN113915294A (en) * | 2020-07-08 | 2022-01-11 | 中国石油化工股份有限公司 | Turbo drill speed reducer and turbo drill with same |
| RU213261U1 (en) * | 2022-03-23 | 2022-09-02 | Общество С Ограниченной Ответственностью "Вниибт-Буровой Инструмент" | SCREW MOTOR WITH DEFLECTOR |
| CN115628025A (en) * | 2022-12-21 | 2023-01-20 | 中国石油集团川庆钻探工程有限公司 | Downhole tractor and coiled tubing tool |
| CN115788278A (en) * | 2022-12-06 | 2023-03-14 | 四川达坦能源科技有限公司 | Screw type pulse anti-drag drilling tool |
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| CN115788278B (en) * | 2022-12-06 | 2023-10-17 | 四川达坦能源科技有限公司 | Screw pulse drag reduction drilling tool |
| CN115628025A (en) * | 2022-12-21 | 2023-01-20 | 中国石油集团川庆钻探工程有限公司 | Downhole tractor and coiled tubing tool |
| CN115628025B (en) * | 2022-12-21 | 2023-08-18 | 中国石油集团川庆钻探工程有限公司 | Downhole tractor and coiled tubing tool |
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| CN106014316B (en) | 2019-09-13 |
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Effective date of registration: 20210928 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: No.106 Huanghai Road, Binhai New Economic and Technological Development Zone, Tianjin 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |