CN2202793Y - Closing type less gear difference speed reducer under well - Google Patents
Closing type less gear difference speed reducer under well Download PDFInfo
- Publication number
- CN2202793Y CN2202793Y CN 94211428 CN94211428U CN2202793Y CN 2202793 Y CN2202793 Y CN 2202793Y CN 94211428 CN94211428 CN 94211428 CN 94211428 U CN94211428 U CN 94211428U CN 2202793 Y CN2202793 Y CN 2202793Y
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- CN
- China
- Prior art keywords
- output shaft
- reducer
- fixed axis
- hole
- tooth difference
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a closing type less gear difference speed reducer under wells, which is used for matching the existing downhole motor drilling in the petroleum exploration and the well drilling operation. The utility model is characterized in that the rotary movement with high rotation speed and small torque of an engine main axis of the downhole motor drilling is converted into the rotary movement with low speed and big torque by the transmission of a double-level reduction internal gear pair which is lubricated by oil or the transmission of a one-level reduction internal gear pair and a sliding block. Simultaneously, a turbine section at the lower part is forced to operate stably under the conditions of low rotation speed and big torque so as to make the downhole motor drilling drive a drilling bit to smash the rocks under the low speed and big torque.
Description
The utility model relates to a kind of for oil exploration and drilling well, the enclosed that particularly is used with existing mud motor tooth difference down-hole reducer less.
In oil exploration and drilling engineering, beat cluster well, directional well and horizontal well and all extensively adopt turbodrill.With regard to turbodrill, itself have high-revolving output characteristics, although the leaf grating blade profile of turbine has been done a large amount of improvement, make the characteristic of turbodrill that bigger improvement arranged, but still it is higher to exist rotating speed, output torque is less than normal, deficiencies such as job insecurity.At present, the down-hole reducer that mud motor can be equipped with is a kind of open type down-hole reducer, though mud motor is equipped with the output torque that this device can increase drilling tool, but, because it is immersed in the mud that contains solid particle, its travelling gear wearing and tearing are very fast, have a strong impact on its life-span, cause the increased frequency that makes a trip, limited the raising of drilling efficiency.
Task of the present utility model provides the few tooth difference down-hole of a kind of enclosed deceleration device, be used with existing mud motor, make drilling tool steady operation under low-speed big, and has long working life, be fit to the various different types of drill bits of adapted, to reach the output torque that increases drilling tool, improve the purpose of drilling efficiency.
The purpose of this utility model can reach by following measure: in the reducer structure of the few tooth difference down-hole of enclosed, between shell and output shaft, be provided with eccentric gear axle, capacity eccentric bearing, dead axle turning set and fixed axis, eccentric gear axle lower end and fixed axis constitute one-level deceleration internal gear pair, eccentric gear axle upper end constitutes the double reduction internal gear pair with the dead axle turning set, the dead axle turning set is connected with output shaft, meshes by the two-stage internal gear pair and drives output shaft.
The purpose of this utility model can also reach by following other measures: in the reducer structure of the few tooth difference down-hole of enclosed, be provided with slide block, the upper end of slide block is connected with the dead axle turning set, the lower end of slide block is connected with the eccentric gear axle, drives output shaft by means of the transmission of gears engaged and slide block.Between fixed axis and output shaft, be provided with sliding bearing, between shell and fixed axis, be provided with the sealing I, between output shaft and fixed axis, be provided with the sealing II, by sealing I, II, make power shaft, shell, fixed axis and output shaft form shoe cream room, gear pair and sliding pair are under the situation of oil lubrication fully work.Power shaft is connected with the engine spindle of mud motor by taper thread, and output shaft is connected with bottom turbine section main shaft by coupling spindle.
The few tooth difference down-hole of enclosed described in the utility model reducer makes the top motor be in steady operation under the little moment of torsion of high speed, make the bottom turbine section be in steady operation under the low-speed big, thereby solved present mud motor output torque deficiency, problem of unstable slowly runs.Compare with existing down-hole reducer, have advantages such as the big and long working life of compact conformation, gearratio.
Accompanying drawing is the structural profile schematic diagram of the few tooth difference down-hole of the utility model enclosed reducer.
In the accompanying drawing: (1) power shaft, (2) plug screw, (3) (10) lining, (4) bearing, (5) dead axle turning set, (6) slide block, (7) eccentric gear axle, (8) capacity eccentric bearing, (9) shell, (11) output shaft, (12) fixed axis, (13) sealing I, (14) sliding bearing, (15) sealing II, (16) retainer ring, (17) coupling spindle.
The utility model is described in further detail below in conjunction with accompanying drawing: power shaft (1) upper end is connected with the mud motor engine output shaft, and the lower end is connected with shell (9) and drives it rotates.By capacity eccentric bearing (8), drive eccentric gear axle (7) by shell and rotate.After the one-level internal gear pair of eccentric gear axle and fixed axis (12) formation slows down, drive slide block (6) by the eccentric gear axle, drive dead axle turning set (5) by slide block again and rotate.Perhaps, after the secondary internal gear pair of eccentric gear axle and dead axle turning set formation slows down, drive output shaft (11) and coupling spindle (17) by the dead axle turning set, coupling spindle is connected with the main shaft of bottom turbine section.Whole enclosed little tooth difference speed reducer is installed in the housing that connects motor up and down fully.Retainer ring is fixed on this shell inner surface by lining.Fixed axis does not rotate during work.High-pressure slurry arrives the bottom turbine section through the runner of reducer shell and retainer ring.By sealing I (13) and sealing II (15), make power shaft, shell, fixed axis and output shaft formation shoe cream room, and all kinematic pairs and bearing are fully immersed in the lubrication oil work.During this reducer work, make the mud motor motor be in high speed steady operation operating mode, the bottom turbine section is in low-speed big operating mode steady operation, thereby drives drill bit rotation fractured rock.
Claims (5)
1, a kind of few tooth difference down-hole of enclosed reducer of forming by shell (9), power shaft (1), output shaft (11) etc., it is characterized in that between shell and output shaft, being provided with eccentric gear axle (7), capacity eccentric bearing (8), dead axle turning set (5) and fixed axis (12), eccentric gear axle lower end and fixed axis constitute one-level deceleration internal gear pair, eccentric gear axle upper end constitutes the double reduction internal gear pair with the dead axle turning set, and the dead axle turning set is connected with output shaft.
2, the few tooth difference down-hole of enclosed according to claim 1 reducer is characterized in that being provided with slide block (6), and the upper end of slide block is connected with the dead axle turning set, and the lower end of slide block is connected with the eccentric gear axle.
3, according to claim 1, the few tooth difference down-hole of 2 described encloseds reducer, it is characterized in that between fixed axis and output shaft, being provided with sliding bearing (14).
4, the few tooth difference down-hole of enclosed according to claim 3 reducer is characterized in that being provided with sealing I (13) between shell and fixed axis, be provided with sealing II (15) between output shaft and fixed axis.
5, the few tooth difference down-hole of enclosed according to claim 4 reducer is characterized in that power shaft is connected with the engine spindle of mud motor by taper thread, and output shaft is connected with bottom turbine section main shaft by coupling spindle (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94211428 CN2202793Y (en) | 1994-05-10 | 1994-05-10 | Closing type less gear difference speed reducer under well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94211428 CN2202793Y (en) | 1994-05-10 | 1994-05-10 | Closing type less gear difference speed reducer under well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2202793Y true CN2202793Y (en) | 1995-07-05 |
Family
ID=33828557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94211428 Expired - Fee Related CN2202793Y (en) | 1994-05-10 | 1994-05-10 | Closing type less gear difference speed reducer under well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2202793Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152237A (en) * | 2017-07-10 | 2017-09-12 | 西南石油大学 | A kind of high pulling torque self-balancing low speed turbodrill |
| CN107503678A (en) * | 2017-10-24 | 2017-12-22 | 西南石油大学 | Novel axial percussion tool based on turbine and cam |
-
1994
- 1994-05-10 CN CN 94211428 patent/CN2202793Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152237A (en) * | 2017-07-10 | 2017-09-12 | 西南石油大学 | A kind of high pulling torque self-balancing low speed turbodrill |
| CN107503678A (en) * | 2017-10-24 | 2017-12-22 | 西南石油大学 | Novel axial percussion tool based on turbine and cam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |