CN206000488U - Dynamical type orients down-hole casing guide shoe - Google Patents
Dynamical type orients down-hole casing guide shoe Download PDFInfo
- Publication number
- CN206000488U CN206000488U CN201620973507.XU CN201620973507U CN206000488U CN 206000488 U CN206000488 U CN 206000488U CN 201620973507 U CN201620973507 U CN 201620973507U CN 206000488 U CN206000488 U CN 206000488U
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- guide shoe
- hole casing
- gear wheel
- dynamical type
- orients
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Abstract
The utility model discloses a kind of dynamical type orients down-hole casing guide shoe, including positive displacement motor, rotary guide shoe and gear wheel, the stator of positive displacement motor is connected with the end of down-hole casing, the rotor of positive displacement motor connects rotary guide shoe through power transmission shaft, hinged at least one gear wheel in the end of rotary guide shoe, being milled with an at least row on each gear wheel has taper cutting tooth.The beneficial effects of the utility model are：During descending, frictional resistance is less, crushes larger borehole wall step and sand bridge by the cutting of cutting tooth on gear wheel, and positive displacement motor drives sleeve pipe to come downwards to design well depth；Drilling fluid cleaning and take sand effect under, realize the purpose entered under unimpeded well, sleeve pipe.
Description
Technical field
The utility model is related to oil exploration technology field, and in particular to a kind of dynamical type orients down-hole casing guide shoe.
Background technology
In directional well casing job it sometimes appear that under sleeve pipe less than shaft bottom situation, gently then caused sleeve pipe waste
Activity duration, heavy then cause the heavy losses such as cutting ferrule pipe.Existing down-hole casing guide shoe is mostly cast iron, cement, aluminium alloy etc.
Material makes, thereon non-activity original paper, the tapered guide body of head.Existing down-hole casing guide shoe is connected to sleeve pipe bottom
Guide function is played, but it has following defect：Cannot pass through when running into larger borehole wall step；Run into sand bridge and do not destroy sand
The ability of bridge；During descending, sliding-frictional resistance is big.
Notification number discloses a kind of casing guide for the Chinese patent literature of CN2787817, and its agent structure is a taper
Pipe nipple, has axially extending bore at middle part, and conical portion is had inclined hole and is connected with the through hole at middle part, in the circle of its conical top
Stylolitic part excircle has several centrosymmetric grooves, and roller is sleeved on roller bearing, and the axial length of roller is less than rolling
The axial length of axle, and roller is gap cooperation with roller bearing, and roller is placed in the groove of taper pipe nipple with roller bearing, roller bearing two
End is fixed by welding on taper pipe nipple.Patent document is mounted with the roller that can be rolled vertically on casing guide,
Rolling friction is changed in sliding friction during setting of casing by guide shoe with borehole wall contact position, it is possible to reduce rubbing during descending
Wipe, but, cannot pass through and run into the ability that sand bridge does not destroy sand bridge when larger borehole wall step is run into.
Notification number discloses a kind of well drilling well completion casing rolling guide shoe for the Chinese patent literature of CN201045283, bag
Guide shoe body in a tubular form is included, guide shoe body front end is in cone-shaped, with connection screw thread on guide shoe rear body inwall, guide shoe sheet
The front and back ends external diameter of body is respectively less than external diameter in the middle part of which, is uniformly arranged along guide shoe axle on the outer circumference surface in the middle part of guide shoe body
Into the embedding groove of arrangement, embedding groove, interval setting roller from front to back, and the top wheel face of each roller is above guide shoe body
The outer circumference surface at middle part.Technical scheme in patent document can also reduce frictional resistance during casing job, improve water
Horizontal well, extended reach well and high angle hole completion setting of casing once under to design well depth success rate.But, running into larger well
During wall stand rank cannot by and run into the ability that sand bridge does not destroy sand bridge, and its once under to design well depth success rate
Have much room for improvement.
Utility model content
The purpose of this utility model is to provide a kind of dynamical type orientation down-hole casing guide shoe, in order to solve under sleeve pipe is hampered
Problem less than design well depth.
For achieving the above object, the utility model provides a kind of dynamical type and orients down-hole casing guide shoe, including positive displacement horse
Reach, rotary guide shoe and gear wheel, positive displacement motor includes the stator being connected to each other and rotor, and stator is connected with the end of down-hole casing
Connect, rotor is connected with power transmission shaft, power transmission shaft is connected with rotary guide shoe, hinged at least one gear wheel in the end of rotary guide shoe,
Being milled with an at least row on each gear wheel has taper cutting tooth.
Further, positive displacement motor is to be connected on down-hole casing bottom to provide, by drilling fluid pressure reduction, the liquid that power realizes rotation
Force motor.
Further, drilling fluid runner is offered, drilling fluid runner is from down-hole casing end via volume in rotary guide shoe
Formula motor, power transmission shaft and rotary guide shoe lead to gear wheel.
Further, drilling fluid runner is located at the shaft core position of rotary guide shoe.
Further, taper cutting tooth is made up of Hardmetal materials.
Further, during the hinged multiple gear wheels in the end of rotary guide shoe, multiple gear wheels are revolved around it between axle center of guide shoe etc.
Away from arrangement.
Further, the often row taper cutting tooth at least in row's taper cutting tooth is circumferentially distributed on gear wheel.
The utility model has the advantage that：
1st, dynamical type of the present utility model orients down-hole casing guide shoe, descending during frictional resistance less, by gear wheel
The cutting of upper cutting tooth crushes larger borehole wall step and sand bridge, and positive displacement motor drives sleeve pipe to come downwards to design well depth；
2nd, dynamical type of the present utility model orients down-hole casing guide shoe, in the cleaning of drilling fluid and takes under sand effect, realizes
The purpose entered under unimpeded well, sleeve pipe.
Description of the drawings
Fig. 1 is dynamical type orientation down-hole casing guide shoe structure schematic diagram in the utility model embodiment 1；
Fig. 2 is the structure of rotary guide shoe and gear wheel in dynamical type orientation down-hole casing guide shoe in the utility model embodiment 1
Schematic diagram；
Fig. 3 is the structure of rotary guide shoe and gear wheel in dynamical type orientation down-hole casing guide shoe in the utility model embodiment 2
Schematic diagram.
Specific embodiment
Following examples are used for the utility model to be described, but are not limited to scope of the present utility model.
Embodiment 1
As shown in Figure 1 and Figure 2, the present embodiment provides a kind of dynamical type and orients down-hole casing guide shoe, the stator of positive displacement motor
1 is connected with the end of down-hole casing, and the rotor 2 of positive displacement motor connects rotary guide shoe 3, the end of rotary guide shoe 3 through power transmission shaft
Hinged three gear wheels 4, the axle center that three gear wheels 4 revolve around it guide shoe 3 are equally spaced, and being milled with gear wheel 4 multiple rows of has taper to cut
Tooth 41 is cut, often row's taper cutting tooth is circumferentially distributed on gear wheel 4, and cutting tooth 41 is made up of Hardmetal materials.Wherein, volume
Formula motor is to be connected on down-hole casing bottom to provide, by drilling fluid pressure reduction, the fluid-power motor that power realizes rotation, opens in rotary guide shoe 3
Drilling fluid runner is provided with, drilling fluid runner leads to tooth from down-hole casing end via positive displacement motor, power transmission shaft and rotary guide shoe
Wheel, so as to circulating fluid and flushing cooling gear wheel, i.e. the liquid feeding end of drilling fluid runner is connected to down-hole casing end, drilling well
The outlet end 31 of liquid runner is located at the centre position of three gear wheels 4.The above-mentioned dynamical type orientation down-hole casing guide shoe of the present embodiment,
Which uses process as follows：During cased, run into well not smooth cannot by when, well head connects sleeve pipe circulating connection
Turn on pump is circulated, and the above-mentioned dynamical type that drilling fluid reaches the present embodiment by inside pipe casing orients down-hole casing guide shoe, in positive displacement
The generation pressure reduction up and down of motor, the rotor 2 so as to drive positive displacement motor are rotated, and the rotation of the rotor 2 of positive displacement motor drives
The rotation of rotary guide shoe 3, rotary guide shoe 3 have driven gear wheel 4 to revolve round the sun, and are achieved during gear wheel 4 is contacted with the borehole wall again
The rotation of of gear wheel 4 itself, during revolution and rotation, the cutting tooth 41 on gear wheel 4 cuts the broken larger borehole wall to gear wheel 4
Step and sand bridge.On this basis, drilling fluid is sprayed from the position of gear wheel 4 also in drilling fluid runner, and drilling fluid can be cold
But gear wheel 4, may also operate as cleaning and taking sand effect, realize the purpose entered under unimpeded well, sleeve pipe.
Embodiment 2
As shown in figure 3, the present embodiment is with the difference of embodiment 1, the hinged gear wheel in the end of rotary guide shoe 3
4, the outlet end 31 of first flow is located at the side of gear wheel 4.The dynamical type orientation down-hole casing guide shoe of this enforcement, its rotary guide shoe
3 and 4 part of gear wheel structure simpler, cost is relatively low, and service life is longer.
Although, above make detailed description to the utility model with general explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the utility model spirit, belonging to the utility model will
Seek the scope of protection.
Claims (7)
1. a kind of dynamical type orients down-hole casing guide shoe, it is characterised in that：The dynamical type orientation down-hole casing guide shoe includes to hold
Product formula motor, rotary guide shoe and gear wheel, the positive displacement motor include the stator being connected to each other and rotor, the stator and down-hole
The end connection of sleeve pipe, the rotor are connected with power transmission shaft, and the power transmission shaft is connected with the rotary guide shoe, rotary guide shoe
Hinged at least one gear wheel in end, being milled with an at least row on each gear wheel has taper cutting tooth.
2. dynamical type according to claim 1 orients down-hole casing guide shoe, it is characterised in that：The positive displacement motor is for connecing
There is provided, in down-hole casing bottom, the fluid-power motor that power realizes rotation by drilling fluid pressure reduction.
3. dynamical type according to claim 1 orients down-hole casing guide shoe, it is characterised in that：Open up in the rotary guide shoe
There is drilling fluid runner, the drilling fluid runner is led to from down-hole casing end via positive displacement motor, power transmission shaft and rotary guide shoe
Gear wheel.
4. dynamical type according to claim 3 orients down-hole casing guide shoe, it is characterised in that：The drilling fluid runner is located at
The shaft core position of rotary guide shoe.
5. dynamical type according to claim 1 orients down-hole casing guide shoe, it is characterised in that：The taper cutting tooth is by hard
Matter alloy material is made.
6. dynamical type according to claim 1 orients down-hole casing guide shoe, it is characterised in that：The end of the rotary guide shoe
During hinged multiple gear wheels, the plurality of gear wheel revolves around it the axle center of guide shoe and is equally spaced.
7. dynamical type according to claim 1 orients down-hole casing guide shoe, it is characterised in that：At least row's taper is cut
The often row taper cutting tooth that cuts in tooth is circumferentially distributed on gear wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620973507.XU CN206000488U (en) | 2016-08-29 | 2016-08-29 | Dynamical type orients down-hole casing guide shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620973507.XU CN206000488U (en) | 2016-08-29 | 2016-08-29 | Dynamical type orients down-hole casing guide shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206000488U true CN206000488U (en) | 2017-03-08 |
Family
ID=58194788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620973507.XU Active CN206000488U (en) | 2016-08-29 | 2016-08-29 | Dynamical type orients down-hole casing guide shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206000488U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013170A (en) * | 2017-05-26 | 2017-08-04 | 西南石油大学 | A kind of hydraulic rotary guide shoe |
| CN107227937A (en) * | 2017-07-03 | 2017-10-03 | 中石化石油工程技术服务有限公司 | One kind is used for cased guide shoe and the method for creeping of extended reach well |
| CN110608006A (en) * | 2019-09-24 | 2019-12-24 | 重庆科技学院 | Well wall repairing type roller guide shoe |
-
2016
- 2016-08-29 CN CN201620973507.XU patent/CN206000488U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013170A (en) * | 2017-05-26 | 2017-08-04 | 西南石油大学 | A kind of hydraulic rotary guide shoe |
| CN107227937A (en) * | 2017-07-03 | 2017-10-03 | 中石化石油工程技术服务有限公司 | One kind is used for cased guide shoe and the method for creeping of extended reach well |
| CN110608006A (en) * | 2019-09-24 | 2019-12-24 | 重庆科技学院 | Well wall repairing type roller guide shoe |
| CN110608006B (en) * | 2019-09-24 | 2024-05-10 | 重庆科技学院 | Roller guide shoe for repairing well wall |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |