CN107165577B - Screw underbalance pulse hydroscillator - Google Patents
Screw underbalance pulse hydroscillator Download PDFInfo
- Publication number
- CN107165577B CN107165577B CN201710603191.4A CN201710603191A CN107165577B CN 107165577 B CN107165577 B CN 107165577B CN 201710603191 A CN201710603191 A CN 201710603191A CN 107165577 B CN107165577 B CN 107165577B
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- Prior art keywords
- spool
- screw
- lower contact
- cam
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 210000002445 nipple Anatomy 0.000 claims abstract description 13
- 229920001971 elastomer Polymers 0.000 claims abstract description 10
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 239000000806 elastomer Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 25
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000005096 rolling process Methods 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
-
- 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
Landscapes
- 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 invention discloses a kind of for having the hydroscillator for promoting chip removal function in the fields such as oil drilling.Its technical solution is：Top connection, stator casing, universal shaft housing, bearing support pipe nipple, lower contact pass sequentially through threaded connection；Power assembly includes top connection, rotor clamping cap, screw rotor, elastomer stator and stator casing；Screw rotor, universal shaft and transmission shaft pass sequentially through threaded connection；Valve assembly includes overcurrent transmission shaft, camming, nozzle, spring system and lower contact, and overcurrent transmission shaft and cam chair are connected through a screw thread, and cam is fixed by screws on cam chair, and spool is coordinated by keyway and lower contact；Camming is by the axial movement that the convert rotational motion of screw motor is spool, to realize the opening and closing of valve.The present invention can effectively reduce the frictional resistance of horizontal well, extended reach well lower drilling tool and the borehole wall, can improve Improving Mud Carrying Capacity, while improving drilling efficiency, can avoid the down-hole accidents such as viscous card.
Description
Technical field
The invention belongs to a kind of Novel down-hole tools of oil-gas drilling engineering field, especially have and promote chip removal work(
The novel hydropower oscillator of energy.
Background technology
New oil gas well exploitation so that drilling engineering is faced more complicated situation, for meet stepout well condition (such as ultradeep well) or
The needs of Novel oil gas resource (such as coal bed gas, shale gas, marine oil and gas), corresponding novel drilling method are also constantly sent out with tool
Exhibition.In these new drilling techniques evolutions, it is to need to solve to improve rate of penetration, reduce wall friction, increase wellbore target diameter
Important foundation problem certainly.In the method solved these problems, the downhole tool mechanically to work is real using drilling fluid
Existing energy conversion generates certain expected vibration, quickly grew in recent years.Compared with other methods, downhole tool has energy
High conversion efficiency, good in economic efficiency, flexible and changeable feature, to obtain extensive concern and application.Related tool type packet
Including the specific implementations such as spin drilling tool, hydraulic impacting device has valve plate, screw rod, turbine, centrifuge blade etc., these new methods with it is new
The appearance of tool has important application value to antifriction, speed-raising synergy.Existing hydroscillator can be such that pump pressure increases,
The service life of slush pump can be adversely affected, and the axial force that screw rod generates can be reinforced moving between valve plate and quiet valve plate
Frictional force, and then the abrasion of dynamic valve plate and quiet valve plate can be accelerated, this can greatly shorten the service life of hydroscillator.
Based on this, herein on existing Research foundation, a kind of novel oscillator is proposed, realize that energy turns using drilling fluid
It changes, generates the complex vibration based on axial vibration, due to the design feature of itself, the axial force that screw rod generates is made not transmit
To spool, and airframe structure parameter and drilling parameter are combined, realizes drilling process antifriction, increase drill bit available weight, carry
High rate of penetration and extension drill string enter the purpose of well location moves.
Invention content
It is an object of the invention to：To overcome existing level well, extended reach well to creep into, frictional resistance is big, and well head bit pressure can not be effective
The large rock-carrying ability of the deficiency, drilling fluid that pass to drill bit is not high and existing axial vibration tool using effect is undesirable asks
Topic, designs a kind of Novel screw type underbalance pulse hydroscillator.
Screw underbalance pulse hydroscillator, it is fixed by top connection, rotor clamping cap, stator casing, screw rotor, rubber
Son, universal shaft, universal shaft housing, transmission shaft, overcurrent transmission shaft, O-ring seal A, thrust bearing, O-ring seal B, bearing branch
Pipe nipple, cam chair, positioning screw, cam, roller, spool, nozzle, O-ring seal C, spring base, spring, lower contact composition are supportted,
It is characterized in that top connection, stator casing, universal shaft housing, bearing support pipe nipple, lower contact pass sequentially through threaded connection；Rotor
Clamping cap is located inside stator casing, and between top connection and screw rotor, rotor clamping cap is used with stator casing and is interference fitted,
Axial movement for limiting rotor；Elastomer stator is cast in inside stator casing, and surface is in spiral, is matched with screw rotor
It closes, the ratio between screw rotor head number and elastomer stator head number are 3:4；Screw rotor, universal shaft, transmission shaft, overcurrent transmission shaft and convex
Wheel seat passes sequentially through threaded connection；It is gap-matched between overcurrent transmission shaft and bearing support pipe nipple；O-ring seal A and O-shaped
Sealing ring B is between overcurrent transmission shaft and bearing support pipe nipple, for the sealing to bearing；Cam passes through positioning with cam chair
Screw is connected；Roller is installed in the outside of spool upper end protrusion, and roller outer circle is contacted with cam curved surface；Along it in the middle part of spool
It is opened in the radial direction there are two being separated by 180 ° of circular hole, spool upper end sets that there are two the bulge-structures for being separated by 180 °, and in its diameter
It is opened on direction there are two circular hole, circular hole coordinates with Roller Shaft, and spool lower end is provided with sliding keyway, and by sliding keyway under
Connector coordinates, and realizes that its is circumferentially positioned；The middle part of lower contact has been provided with two spaced 180 ° of through-holes in the radial direction, leads to
Screw thread is equipped in hole, lower contact inner wall is provided with the sliding keyway coordinated with spool；Nozzle exterior is equipped with screw thread, and endoporus is positive six side
Shape, and coordinated by the radial hole on screw thread and lower contact；Spring base is located at spool lower end, is terminated under upper surface and spool
It touches, spring base big end lower surface is contacted with spring, is held up by spring, and spring base big end is provided with sliding keyway, and spring base passes through key
Slot coordinates with lower contact, realizes that its is circumferentially positioned, spring base small end is provided with 6 spaced 180 ° of slot holes in the radial direction；
Spring is between spring base and lower contact.
Compared with the prior art, advantage is the present invention：(1) screw underbalance pulse hydroscillator can provide one
A periodicity low frequency axial impact force；(2) drilling fluid that screw underbalance pulse hydroscillator radially sprays has the borehole wall
The ability for impacting agitation contributes to landwaste in the migration of annular space, improves Improving Mud Carrying Capacity；(3) smaller standpipe is only needed
Pressure can generate negative-going pulse；(4) conventional hydraulic oscillator can be such that pump pressure increases, screw underbalance pulse hydroscillator
Equipped with completely new bypass, pump pressure can be reduced while improving drilling speed, improve the service life of surface mud pump.
Description of the drawings
Fig. 1 is the structural schematic diagram of screw underbalance pulse hydroscillator of the present invention.
In figure：1- top connections, 2- rotors clamping cap, 3- stator casings, 4- screw rotors, 5- elastomer stators, 6- universal shafts,
7- universal shaft housings, 8- transmission shafts, 9- overcurrents transmission shaft, 10-O type sealing ring A, 11- thrust bearing, 12-O type sealing rings B,
13- bearing supports pipe nipple, 14- cam chairs, 15- positioning screws, 16- cams, 17- rollers, 18- spools, 19- nozzles, 20-O types
Sealing ring C, 21- spring base, 22- springs, 23- lower contacts.
Fig. 2 is the valve opening structure schematic diagram of screw underbalance pulse hydroscillator of the present invention.
Fig. 3 is the partial enlarged view in the regions a in Fig. 1 of the present invention.
Fig. 4 is the partial enlarged view in the regions b in Fig. 2 of the present invention.
Fig. 5 is the sectional view in the faces A-A in Fig. 1 of the present invention.
Fig. 6 is the sectional view in the faces B-B in Fig. 2 of the present invention.
Fig. 7 is the schematic three dimensional views of cam of the present invention.
Fig. 8 is the schematic three dimensional views of spool of the present invention.
Fig. 9 is the schematic three dimensional views of spring base of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
Shown in reference to the accompanying drawings, the screw underbalance pulse hydroscillator, mainly by power assembly, drive assembly and valve
Door assembly three parts composition, power assembly is by top connection 1, rotor clamping cap 2, stator casing 3, screw rotor 4, elastomer stator 5
Composition；Drive assembly is made of universal shaft 6, transmission shaft 8 and overcurrent transmission shaft；Valve assembly is by cam chair 14, cam 16, roller
17, the compositions such as spool 18, nozzle 19, spring base 21, spring 22, lower contact 23；Top connection 1, stator casing 3, universal shaft housing
7, bearing support pipe nipple 13, lower contact 23 pass sequentially through threaded connection；Rotor clamping cap 2 is located inside stator casing 3, top connection
Between 1 and screw rotor 4, rotor clamping cap 2 is used with stator casing 3 and is interference fitted, the axial movement for limiting rotor；Rubber
For 5 note of glue stator inside stator casing 3, surface is in spiral, is coordinated with screw rotor；Screw rotor 4, universal shaft 6, transmission
Axis 8, overcurrent transmission shaft 9 and cam chair 14 pass sequentially through threaded connection；It is used between overcurrent transmission shaft 9 and bearing support pipe nipple 13
Clearance fit；O-ring seal A10 and O-ring seal B12 between overcurrent transmission shaft 9 and bearing support pipe nipple 13, for pair
The sealing of bearing；Cam 16 is connected with cam chair 14 by positioning screw 15；Roller 17 is installed in 18 upper end of spool protrusion
Outside, 17 outer circle of roller and 16 curved face contact of cam；The middle part of spool 18 radially opens that there are two be separated by 180 ° on direction
Circular hole, 18 upper end of spool are set there are two being separated by 180 ° of bulge-structure, and are opened in the radial direction thereof there are two circular hole, circular hole with
Roller Shaft coordinates, and 18 lower end of spool is provided with sliding keyway, and is coordinated by sliding keyway and lower contact 23, realizes that it is circumferentially fixed
Position；The middle part of lower contact 23 has been provided with two spaced 180 ° of through-holes in the radial direction, and screw thread, lower contact are equipped in through-hole
23 inner walls are provided with the sliding keyway coordinated with spool 18；19 outside of nozzle is equipped with screw thread, and endoporus is regular hexagon, and passes through screw thread
Coordinate with the radial hole in lower contact 23；Spring base 21 is located at 18 lower end of spool, upper surface and 18 times end in contact of spool, spring
21 big end lower surfaces of seat are contacted with spring 22, are held up by spring 22,21 big end of spring base is provided with sliding keyway, and spring base 21 passes through
Keyway coordinates with lower contact, realizes that its is circumferentially positioned, 21 small end of spring base is provided with 6 spaced 180 ° of length in the radial direction
Hole；Spring 22 is between spring base 21 and lower contact 23.
In the course of work, screw underbalance pulse hydroscillator top connects damper and is used cooperatively, and is flowed out from damper
Drilling fluid directly flow into this tool from top connection 1, then pass through from rotor clamping cap 2, driving rotor rotation, drilling fluid is from screw rod
After gap outflow between rotor 4 and elastomer stator 5, by the annular space inside universal shaft housing 7, lead to from transmission shaft 8 is radial
Hole flows into the runner inside transmission shaft 8, if at this point, the through-hole on spool 18 is connected to the through-hole in lower contact 23, it is a part of
Drilling fluid from through-hole flow out, it is a part of then followed by spool 18, spring base 21, then from 23 lower end of lower contact outflow, under inflow
Portion's drill assembly.The rotary motion generated by power assembly passes to cam by universal shaft 6, transmission shaft 8, overcurrent transmission shaft 9
Power assembly is generated the axially reciprocating that convert rotational motion is spool 18 by combination, cam combination.As shown in Figure 1, when rolling
When son 17 is in 16 low level of cam, spool 18 and spring base 21 are acted on by 22 elastic force of spring, are jacked up, at this time the diameter on spool 18
It is staggered to through-hole and the through-hole in lower contact 23, manages interior drilling liquid pressure maximum value at this time；When roller 17 is transported from 16 low level of cam
When moving 16 high position of cam, as shown in Fig. 2, spring 22 is compressed, spool 18 and spring base 21 move down, valve in folding process
Radial through-hole on core 18 is slowly overlapped with nozzle 19, and a part of drilling fluid is flowed out from nozzle 19, due to drilling fluid inside and outside tool
Pressure difference, lead to the reduction of tool interior drilling liquid pressure, the drilling fluid of outflow can wash away the borehole wall；When roller 17 is from cam 16
When a high position moves to 16 low level of cam, spool 18, spring base 21 and spring 22 are returned to initial position, and cam 16 rotates one week valve
Core 18 moves back and forth twice, and drilling liquid pressure also fluctuates twice therewith in tool, repeatedly, standpipe pressure will be made to generate one
A cyclic fluctuation realizes that energy is converted using drilling fluid, generates the complex vibration based on axial vibration.
Claims (3)
1. screw underbalance pulse hydroscillator, fixed by top connection, rotor clamping cap, stator casing, screw rotor, rubber
Son, universal shaft, universal shaft housing, transmission shaft, overcurrent transmission shaft, O-ring seal A, thrust bearing, O-ring seal B, bearing branch
Pipe nipple, cam chair, positioning screw, cam, roller, spool, nozzle, O-ring seal C, spring base, spring, lower contact composition are supportted,
It is characterized in that top connection (1), stator casing (3), universal shaft housing (7), bearing support pipe nipple (13), lower contact (23) are successively
It is connected through a screw thread；Rotor clamping cap (2) is located at stator casing (3) inside, between top connection (1) and screw rotor (4), rotor
Clamping cap (2) is used with stator casing (3) and is interference fitted, the axial movement for limiting rotor；Elastomer stator (5) is cast in fixed
Subshell (3) is internal, and surface is in spiral, is coordinated with screw rotor；Screw rotor (4), universal shaft (6), transmission shaft (8),
Overcurrent transmission shaft (9) and cam chair (14) pass sequentially through threaded connection；Between overcurrent transmission shaft (9) and bearing support pipe nipple (13)
It is gap-matched；O-ring seal A (10) and O-ring seal B (12) are located at overcurrent transmission shaft (9) and bearing support pipe nipple
(13) between, for the sealing to bearing；Cam (16) is connected with cam chair (14) by positioning screw (15)；Roller (17)
It is installed in the outside of spool (18) upper end protrusion, roller (17) outer circle and cam (16) curved face contact；Edge in the middle part of spool (18)
It is opened in the radial direction there are two being separated by 180 ° of circular hole, and spool (18) upper end sets that there are two the bulge-structures for being separated by 180 °, and
It is opened in the radial direction thereof there are two circular hole, circular hole coordinates with Roller Shaft, and spool (18) lower end is provided with sliding keyway, and passes through cunning
Dynamic keyway coordinates with lower contact (23), realizes that its is circumferentially positioned；The middle part of lower contact (23) has been provided with two phases in the radial direction
The mutually through-hole at 180 ° of interval, through-hole is interior to be equipped with screw thread, and lower contact (23) inner wall is provided with the sliding keyway with spool (18) cooperation；Spray
Screw thread is equipped with outside mouth (19), endoporus is regular hexagon, and is coordinated by the radial hole on screw thread and lower contact (23)；Spring base
(21) it is located at spool (18) lower end, upper surface and end in contact, spring base (21) big end lower surface and spring under spool (18)
(22) it contacts, is held up by spring (22), spring base (21) big end is provided with sliding keyway, and spring base (21) passes through keyway and lower contact
Cooperation, realizes that its is circumferentially positioned, spring base (21) small end is provided with 6 spaced 180 ° of slot holes in the radial direction；Spring
(22) between spring base (21) and lower contact (23).
2. screw underbalance pulse hydroscillator according to claim 1, it is characterised in that use two cams (16)
Using two protrusions, cam (16) uses the contour curve of " cycloid-straight line-cycloid-straight line " characteristics of motion.
3. screw underbalance pulse hydroscillator according to claim 1, it is characterised in that lower contact (23) inner wall is set
There are two step, keyway is opened on first step, after the set-up mode of keyway must be such that spool (18) coordinates with lower contact (23),
Two radial through-hole on two radial through-hole and lower contact (23) on spool (18) are in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710603191.4A CN107165577B (en) | 2017-07-22 | 2017-07-22 | Screw underbalance pulse hydroscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710603191.4A CN107165577B (en) | 2017-07-22 | 2017-07-22 | Screw underbalance pulse hydroscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107165577A CN107165577A (en) | 2017-09-15 |
| CN107165577B true CN107165577B (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710603191.4A Active CN107165577B (en) | 2017-07-22 | 2017-07-22 | Screw underbalance pulse hydroscillator |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420061A (en) * | 2017-09-29 | 2017-12-01 | 西南石油大学 | Underbalance pulse oscillator |
| CN107893635B (en) * | 2017-11-27 | 2023-08-15 | 中石化石油机械股份有限公司研究院 | Controllable hydraulic pulse drilling speed-increasing tool |
| CN109184655B (en) * | 2018-11-21 | 2020-07-03 | 重庆地质矿产研究院 | Coiled tubing dragging pulse hydraulic fracturing tool with bottom setting and method |
| CN110374508A (en) * | 2019-08-21 | 2019-10-25 | 石擎天 | A kind of underbalance pulse oscillation tool |
| CN111677472B (en) * | 2020-06-11 | 2021-07-23 | 中国石油大学(北京) | Valve type hydraulic oscillator |
| CN112127795A (en) * | 2020-10-13 | 2020-12-25 | 侯江伟 | Drive type hydraulic oscillator for well drilling |
| CN112145110B (en) * | 2020-11-02 | 2022-08-30 | 东北石油大学 | Hydraulic pulse oscillation device |
| CN112377133B (en) * | 2020-11-20 | 2021-11-23 | 中国石油集团渤海钻探工程有限公司 | Controllable pulse nipple |
| CN113846970B (en) * | 2021-09-23 | 2023-07-25 | 奥瑞拓能源科技股份有限公司 | Self-control rotary hammer |
| CN115217418B (en) * | 2022-07-26 | 2023-12-08 | 西南石油大学 | Full-dimensional antifriction and resistance-reducing oscillator |
| CN115341844B (en) * | 2022-10-14 | 2023-01-17 | 沧州格锐特钻头有限公司 | Short-bending impact-resistant large-torque screw drill |
| 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 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2667584C (en) * | 2007-01-30 | 2015-12-01 | Lewal Drilling Ltd. | Down hole multiple piston tools operated by pulse generation tools and methods for drilling |
| CN103527124B (en) * | 2013-10-12 | 2016-06-29 | 王岳 | Infinite switch bypass valve and well system |
| CN104033113B (en) * | 2014-06-27 | 2016-01-27 | 西南石油大学 | One is spun helicoid hydraulic motor |
| CN105134132B (en) * | 2015-09-17 | 2018-01-05 | 中国石油天然气集团公司 | With brill down-hole by-pass valve |
| CN105178896B (en) * | 2015-09-22 | 2017-10-17 | 中国石油天然气集团公司 | Wellbore cleanout device |
| CN105221068A (en) * | 2015-11-10 | 2016-01-06 | 西南石油大学 | Percussion is utilized to improve the New Type of PDC Bit of heart portion efficiency of breaking rock |
| CN206129207U (en) * | 2016-11-03 | 2017-04-26 | 西南石油大学 | Novel oscillatory surge ware based on turbine and cam |
| CN106639866B (en) * | 2016-12-30 | 2018-09-04 | 成都海猛石油机械有限公司 | A kind of spin drilling tool |
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2017
- 2017-07-22 CN CN201710603191.4A patent/CN107165577B/en active Active
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| CN107165577A (en) | 2017-09-15 |
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Effective date of registration: 20201124 Address after: 277400 Taierzhuang Province Economic Development Zone, Zaozhuang District, Central Road, north of the first North Patentee after: Zaozhuang xinjinshan Intelligent Equipment Co.,Ltd. Address before: No. 8 Road, Xindu Xindu District of Chengdu city of Sichuan Province in 610500 Patentee before: SOUTHWEST PETROLEUM University |
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Effective date of registration: 20220718 Address after: 277400 east side of No. 2 Road, economic development zone, Taierzhuang District, Zaozhuang City, Shandong Province Patentee after: Shandong Wang Chao Tianrun Machinery Manufacturing Co.,Ltd. Address before: 277400 Taierzhuang Economic Development Zone, Zaozhuang City, Shandong Province Patentee before: Zaozhuang xinjinshan Intelligent Equipment Co.,Ltd. |
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