CN206299339U - A kind of pressure-adjustable hydrodynamic thrust device - Google Patents
A kind of pressure-adjustable hydrodynamic thrust device Download PDFInfo
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- CN206299339U CN206299339U CN201720000733.4U CN201720000733U CN206299339U CN 206299339 U CN206299339 U CN 206299339U CN 201720000733 U CN201720000733 U CN 201720000733U CN 206299339 U CN206299339 U CN 206299339U
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Abstract
The utility model is related to a kind of pressure-adjustable hydrodynamic thrust device, belongs to oil drilling tool field of mechanical technique.The thruster, including top connection, mandrel, transition joint, one-level subsidiary cylinder, two grades of subsidiary cylinders and choked flow Mao Sai, Master cylinder body is slidably fitted with mandrel, Master cylinder body side is provided with one-level subsidiary cylinder and two grades of subsidiary cylinders by transition joint screw thread, one end of two grades of subsidiary cylinders is threadedly coupled with Master cylinder body, the ends screw of one-level subsidiary cylinder is provided with top connection, and inside top connection is provided with choked flow Mao Sai.Drill free reduction drilling efficiency when letting off slow under compression fluid cylinder and drilling tool when the pressure-adjustable hydrodynamic thrust device effectively solves the problems, such as that existing drilling tool decentralization is too fast.The pressure-adjustable hydrodynamic thrust device simple structure, the characteristics of practicality is good, being normally carried out for drilling well is instructed in the change that drillng operation operator can be by observing the pressure registration of drilling fluid；The drilling wells such as horizontal well, extended reach well are particularly well-suited to install and use.
Description
Technical field
The utility model is related to a kind of pressure-adjustable hydrodynamic thrust device, belongs to oil drilling tool field of mechanical technique.
Background technology
In conventional drilling operation, either traditional rotating disk drilling, or downhole motor drilling, all it is by brill
The weight of post applies the pressure of the drill.But, during high angle hole and horizontal well drilling, by hole angle increase, wall friction resistance
The factors such as large and small size drilling tool poor rigidity influence, and dependence drill string weight traditional in conventional drilling has applied the method for the pressure of the drill
Construction needs can not well be met.Then, some downhole tools using flexible hydraulic pressurization, such as 20th century are occurred in that in succession
End, the rich team of plum of University On The Mountain Of Swallows designs and have developed the single pass waterpower control propeller of one-level, and the device is in order to more preferable
Ground vibration damping has loaded onto stabilizer on its outer barrel；And for example at the beginning of 21 century, Southwest Petrol University have developed two grades of a kind of long range
Single pass hydraulic pressurizer, the piston stroke of the device is more much longer than conventional hydraulic thruster, and work people is mitigated significantly
The amount of labour of member；For another example 20 end of the century, Shengli Oil Field devises the hydraulic thruster of a three-level only one of which stroke, the device
Pushed away plus mechanism by what multiple pistons were constituted, the pressure of the drill for adding is pushed away than hydraulic thruster before much greater.Above flexibility water
The downhole tool of power pressurization all preferably resolves the pressure of the drill such as horizontal well, extended reach well and is difficult applying problem.Additionally, fluid power
Thruster can also realize the pressure of the drill it is invariable and it is uniform send brill, improve rate of penetration and protection drilling tool and drill bit, reduction makes a trip
Number of times, can to greatest extent reduce down hole problem and accident, improve operating efficiency, mitigate the labour intensity of worker, section
About drilling period etc..Therefore, it is widely used in extended reach well, the drilling well of horizontal well and workover treatment, with good
Development prospect.But, when drilling tool decentralization is too fast, the pressure of mutation will cause that hydrodynamic thrust device is compacted rapidly, now
Hydrodynamic thrust device will lose the effect of flexible pressurizing, so as to the same with the effect that drill collar pressurizes.In this case, waterpower
Pressurizer is just easy to damage.And if drilling tool lowering velocity is slow, then drill bit will dally, and cause the wave of drilling efficiency
Take.This is all unfavorable for the normal drilling well work of hydrodynamic thrust device.
The content of the invention
The purpose of this utility model is：A kind of the pressure of the drill that can effectively adjust when drilling tool transfers too fast or excessively slow is provided；
With solve the problems, such as existing drilling tool transfer let off slow under too fast or drilling tool when drill free and reduce the pressure-adjustable fluid power of drilling efficiency
Thruster.
The technical solution of the utility model is：
A kind of pressure-adjustable hydrodynamic thrust device, including top connection, mandrel, transition joint, one-level subsidiary cylinder, two grades of subsidiary cylinders and
Choked flow Mao Sai, it is characterised in that：Master cylinder body is slidably fitted with mandrel, Master cylinder body side is provided with one by transition joint screw thread
Level subsidiary cylinder and two grades of subsidiary cylinders, one end of two grades of subsidiary cylinders are threadedly coupled with Master cylinder body, the ends screw peace of one-level subsidiary cylinder
Equipped with top connection, inside top connection is provided with choked flow Mao Sai；Choked flow thatch is equipped with auxiliary piston bar by block ring beyond the Great Wall；Auxiliary piston bar
It is upper that auxiliary piston is equipped with by positive stop lug boss and pressure cap A；Main work is equipped with by pressure cap B and jump ring on the mandrel of auxiliary piston bar side
Plug, main piston is slidably connected with two grades of subsidiary cylinders.
Described auxiliary piston bar is slidably connected with transition joint.
Described auxiliary piston is slidably connected with one-level subsidiary cylinder.
Described choked flow Mao Sai is tubular body, and one end termination of choked flow Mao Sai is provided with fitting flange, the circle of fitting flange
Screw thread is provided with week, liquid opening is evenly equipped with the end face of fitting flange, annular groove is provided with the body of choked flow Mao Sai.
Described choked flow Mao Sai is threadedly coupled by the screw thread on fitting flange with one-level subsidiary cylinder.
The pipe diameter at described choked flow Mao Sai annular grooves two ends is corresponding with block ring diameter of bore.
Liquid flow hole is respectively arranged with described one-level subsidiary cylinder and two grades of subsidiary cylinders.
Defining flange is provided with described mandrel, Master cylinder body is connected with defining flange contact.
The beneficial effects of the utility model are：
In the pressure-adjustable hydrodynamic thrust device course of work, block ring can axially move with piston, when running into drilling tool
Decentralization can mutually coincide when too fast or excessively slow with the body at choked flow lance plug groove two ends, make the overflow section meeting of product of drilling fluid suddenly
Diminish, thus produce pressure drop, increase axial thrust.So as to effectively solve the decentralization of existing drilling tool it is too fast when compress fluid cylinder and
The problem of drill free reduction drilling efficiency when letting off slow under drilling tool.The pressure-adjustable hydrodynamic thrust device simple structure, practicality is good
The characteristics of, being normally carried out for drilling well is instructed in the change that drillng operation operator can be by observing the pressure registration of drilling fluid；
The drilling wells such as horizontal well, extended reach well are particularly well-suited to install and use.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 be Fig. 1 in A-A to cross section structure schematic diagram；
Fig. 3 be Fig. 1 in B-B to cross section structure schematic diagram；
Fig. 4 is the structural representation of choked flow lance plug of the present utility model；
Fig. 5 is the end face structure schematic diagram of Fig. 4.
In figure：1st, top connection, 2, one-level subsidiary cylinder, 3, choked flow Mao Sai, 4, block ring, 5, auxiliary piston, 6, auxiliary piston bar, 7,
Transition joint, 8, pressure cap B, 9, main piston, 10, jump ring, 11, Master cylinder body, 12, mandrel, 13, two grades of subsidiary cylinders, 14, assemble convex
Edge, 15, liquid opening, 16, annular groove, 17, positive stop lug boss, 18, pressure cap A, 19, liquid flow hole, 20, defining flange；21st, hydraulic pressure
Hole.
Specific embodiment
The pressure-adjustable hydrodynamic thrust device, including top connection 1, mandrel 12, transition joint 7, the secondary cylinder of 2, two grades of one-level subsidiary cylinder
Body 13 and choked flow Mao Sai 3.Master cylinder body 11 is slidably fitted with mandrel 12, the side of Master cylinder body 11 is installed by the screw thread of transition joint 7
There are one-level subsidiary cylinder 2 and two grades of subsidiary cylinders 13, two grades of one end of subsidiary cylinder 13 are threadedly coupled with Master cylinder body 11.
The ends screw of one-level subsidiary cylinder 2 is provided with top connection 1, and the inner side of top connection 1 is provided with choked flow Mao Sai 3；Choked flow thatch
Plug 4 is tubular body, and one end termination of choked flow Mao Sai 4 is provided with fitting flange 14, and the provided circumferentially about of fitting flange 14 has screw thread,
Liquid opening 15 is evenly equipped with the end face of fitting flange 14, annular groove 16 is provided with the body of choked flow Mao Sai；Choked flow Mao Sai 4
It is threadedly coupled with one-level subsidiary cylinder 2 by the screw thread on fitting flange 14.
Block ring 4 is set with choked flow Mao Sai 3, screw thread is provided with auxiliary piston bar 6 on block ring 4；Auxiliary piston bar 6 and centre
It is to be slidably connected between joint 7.The pipe diameter at the two ends of 3 annular grooves of choked flow Mao Sai 16 is corresponding with the diameter of bore of block ring 4.
That is block ring 4 slidably on the body at the two ends of annular groove 16, so as to form sealing.
Auxiliary piston 5 is equipped with by positive stop lug boss 17 and pressure cap A18 on auxiliary piston bar 6；Auxiliary piston 5 and one-level subsidiary cylinder 2 it
Between to be slidably connected.Main piston 9 is equipped with by pressure cap B8 and jump ring 10 on the mandrel 12 of the side of auxiliary piston bar 16, main piston 9 with
Two grades of subsidiary cylinders 13 are slidably connected.
Liquid flow hole 19 is respectively arranged with the one-level subsidiary cylinder 2 of the pressure-adjustable hydrodynamic thrust device and two grades of subsidiary cylinders 13.Core
It is provided with defining flange 20 on axle 11, one end and the defining flange of Master cylinder body 11 connect 20 and touch and be connected.
The block ring 4 of the pressure-adjustable hydrodynamic thrust device, can be with auxiliary piston by being threadably mounted on the inwall of auxiliary piston bar 6
Bar 6 axially moves together；Coupled by rectangular spline between mandrel 12 and Master cylinder body 11, axial phase can be done between the two
To motion.
When the pressure-adjustable hydrodynamic thrust device works, top connection 1 is that NC50 joints are used to connect tubing string；Mandrel 12 is used to connect
Drill bit；In the course of work；Run into drilling tool decentralization it is too fast when, the drilling fluid part entered by top connection 1 is through choked flow Mao Sai 3, secondary
Piston rod 6, the central through hole of mandrel 12 are acted on drill bit, wherein there is part to enter by the hydraulic pressure hole 21 on auxiliary piston bar 6
To the toroidal cavity between auxiliary piston bar 6 and two grades of subsidiary cylinders 13, and act on main piston 9, so as to realize broken rock moment of torsion
Transmission.
Another part drill-in fluid is entered between one-level subsidiary cylinder 2 and choked flow Mao Sai 3 by the liquid opening 15 of choked flow Mao Sai 3
Toroidal cavity in, and act on auxiliary piston 5, so as to promote auxiliary piston 5 and drive auxiliary piston bar 6 to move downward；This mistake
Cheng Zhong, when block ring 4 departs from the sealing state of the left end body of annular groove 16 and operation to 16 sections of annular groove, acts on
Drill-in fluid on auxiliary piston 5 is flowed out by the gap between block ring 4 and annular groove 16, and leads to interior drill-in fluid remittance with center
Collection, realizes the purpose to drill bit pressurization.
When block ring 4 is run to the body of the right-hand member of annular groove 16, i.e. the body of block ring 4 and the right-hand member of annular groove 16
Mutually when coinciding, the overflow section product of drilling fluid can diminish suddenly, so as to produce pressure drop, make drilling fluid to the pressure of auxiliary piston 5
Increase and act on drill bit, thus improve the efficiency of drillng operation.
Being run into the course of work when let off slow under drilling tool, borehole pressure is entered in the thruster by liquid flow hole 19, while
Under drill string effect, make auxiliary piston bar 6 and the versus primary subsidiary cylinder 2 of mandrel 12, transition joint 7, two grades of subsidiary cylinders 13 and master cylinders
Body 11 is moved, when block ring 4 is run to the body of the left end of annular groove 16, i.e. the pipe of block ring 4 and the left end of annular groove 16
When body mutually coincides, the overflow section of drilling fluid product can diminish suddenly again, and operator can be by the change of observing registration again
It is secondary to suppress, so that drill free reduction drilling efficiency when can effectively solve the problems, such as that drilling tool decentralization is too fast or slow.
The pressure-adjustable hydrodynamic thrust device simple structure, the characteristics of practicality is good, drillng operation operator can be by observation
Being normally carried out for drilling well is instructed in the change of the pressure registration of drilling fluid；It is particularly well-suited to the brill such as horizontal well, extended reach well
Well is installed and used.
Claims (8)
1. a kind of pressure-adjustable hydrodynamic thrust device, including top connection（1）, mandrel（12）, transition joint（7）, one-level subsidiary cylinder（2）、
Two grades of subsidiary cylinders（13）With choked flow Mao Sai（3）, it is characterised in that：Mandrel（12）On be slidably fitted with Master cylinder body（11）, Master cylinder body
（11）Side passes through transition joint（7）Screw thread is provided with one-level subsidiary cylinder（2）With two grades of subsidiary cylinders（13）, two grades of subsidiary cylinders（13）
One end and Master cylinder body（11）Threaded connection, one-level subsidiary cylinder（2）Ends screw top connection is installed（1）, top connection（1）It is interior
Side is provided with choked flow Mao Sai（3）；Choked flow Mao Sai（3）It is upper to pass through block ring（4）Equipped with auxiliary piston bar（6）；Auxiliary piston bar（6）It is upper logical
Cross positive stop lug boss（17）With pressure cap A（18）Equipped with auxiliary piston（5）；Auxiliary piston bar（6）The mandrel of side（12）It is upper to pass through pressure cap B
（8）And jump ring（10）Equipped with main piston（9）, main piston（9）With two grades of subsidiary cylinders（13）It is slidably connected.
2. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described auxiliary piston bar（6）With
Transition joint（7）It is slidably connected.
3. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described auxiliary piston（5）With one
Level subsidiary cylinder（2）It is slidably connected.
4. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described choked flow Mao Sai（3）For
Tubular body, choked flow Mao Sai（3）One end termination be provided with fitting flange（14）, fitting flange（14）Provided circumferentially about have spiral shell
Line, fitting flange（14）End face on be evenly equipped with liquid opening（15）, choked flow Mao Sai（3）Body on be provided with annular groove
（16）.
5. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1 or 4, it is characterised in that：Described choked flow Mao Sai（3）
By fitting flange（14）On screw thread and one-level subsidiary cylinder（2）Threaded connection.
6. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described choked flow Mao Sai（3）Ring
Connected in star（16）The pipe diameter and block ring at two ends（4）Diameter of bore correspondence.
7. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described one-level subsidiary cylinder（2）
With two grades of subsidiary cylinders（13）On be respectively arranged with liquid flow hole（19）.
8. a kind of pressure-adjustable hydrodynamic thrust device according to claim 1, it is characterised in that：Described mandrel（12）Upper setting
Limited location flange（20）, Master cylinder body（11）With defining flange（20）Contact connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720000733.4U CN206299339U (en) | 2017-01-03 | 2017-01-03 | A kind of pressure-adjustable hydrodynamic thrust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720000733.4U CN206299339U (en) | 2017-01-03 | 2017-01-03 | A kind of pressure-adjustable hydrodynamic thrust device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206299339U true CN206299339U (en) | 2017-07-04 |
Family
ID=59203834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720000733.4U Expired - Fee Related CN206299339U (en) | 2017-01-03 | 2017-01-03 | A kind of pressure-adjustable hydrodynamic thrust device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206299339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522828A (en) * | 2017-01-03 | 2017-03-22 | 长江大学 | Pressure-adjustable hydraulic thruster |
| CN115929236A (en) * | 2023-01-05 | 2023-04-07 | 成都理工大学 | Liquid bag type intelligent quick releasing device for horizontal directional drilling rope coring pipe |
-
2017
- 2017-01-03 CN CN201720000733.4U patent/CN206299339U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522828A (en) * | 2017-01-03 | 2017-03-22 | 长江大学 | Pressure-adjustable hydraulic thruster |
| CN115929236A (en) * | 2023-01-05 | 2023-04-07 | 成都理工大学 | Liquid bag type intelligent quick releasing device for horizontal directional drilling rope coring pipe |
| CN115929236B (en) * | 2023-01-05 | 2024-04-12 | 成都理工大学 | Horizontal directional drilling rope core-taking pipe liquid sac type intelligent rapid throwing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20200103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |