CN201687386U - Screw drilling tool - Google Patents
Screw drilling tool Download PDFInfo
- Publication number
- CN201687386U CN201687386U CN2010201960890U CN201020196089U CN201687386U CN 201687386 U CN201687386 U CN 201687386U CN 2010201960890 U CN2010201960890 U CN 2010201960890U CN 201020196089 U CN201020196089 U CN 201020196089U CN 201687386 U CN201687386 U CN 201687386U
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- China
- Prior art keywords
- transmission shaft
- stator
- shell
- drilling tool
- drive shaft
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- 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 - Lifetime
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Abstract
The utility model relates to a screw drilling tool, which comprises a shell and a shaft body. The shell comprises a stator, a universal shaft shell and a transmission shaft shell which are in direct thread connection orderly, wherein one end of the stator is connected to a transition joint through the thread; the interior of the transmission shaft shell is provided with an upper radial bearing set, a thrust bearing set and a lower radial bearing set; two ends of the thrust bearing set are respectively arranged on an upper disc spring and a lower disc spring; the shaft body comprises a rotor, a universal shaft, a water cap and a transmission shaft which are in thread connection; the universal shaft is arranged in the universal shaft shell; the rotor is arranged in the stator; and the water cap is arranged between the left end of the transmission shaft and the right end of the universal shaft. The utility model has the advantages that the screw drilling tool fills up the gap that the size of the traditional screw drilling tool is between 120 and 165, the screw drilling tool is more suitable for the well hole bigger than 61/2'' than 120 drilling tool, and the reliability and the property are obviously promoted.
Description
Technical field
The utility model relates to a kind of power drilling tool, relates in particular to a kind of helicoid hydraulic motor.
Background technology
Helicoid hydraulic motor is most widely used a kind of mud motor in current domestic and international oil, the gas drilling field, continuous development along with modern drilling technology, especially along with the popularization of combined drilling, the function that helicoid hydraulic motor is played the part of in drillng operation is more and more, acts on also increasing.
It is existing both at home and abroad that to be used in the helicoid hydraulic motor product specification that 57/8 "～77/8 " specification well is used mainly be external diameter 120mm or the external diameter helicoid hydraulic motor as the 127mm specification.Owing to be subjected to the restriction of outside dimension, helicoid hydraulic motor poor rigidity, output torque are low, rotating speed also is difficult to meet the demands.Existing drilling tool specification at 120mm or more than the 127mm mainly be exactly external diameter be 165mm or bigger helicoid hydraulic motor.In addition, existing 120mm or 127mm helicoid hydraulic motor use also frequent generation thrust bearings cracked in than big hole, and threading off in more serious sometimes also have universal drive shaft housing and stator case junction, causes the well accident.These situations also need be improved in the design of new helicoid hydraulic motor targetedly.
The utility model content
The purpose of this utility model provides a kind of helicoid hydraulic motor, is applicable to the drillng operation of 61/2 "～83/8 " specification well, has higher rigidity and intensity, can export bigger moment of torsion.
The purpose of this utility model is to be achieved through the following technical solutions: a kind of helicoid hydraulic motor, comprise housing and axis body, described housing is by the stator that connects in turn by straight thread, universal drive shaft housing and transmission shaft shell constitute, one end of stator is by the transit joint that is threaded, the mounted inside of transmission shaft shell has last journal bearing group, thrust bearings and lower radial bearing group, wherein the two ends of thrust bearings are respectively equipped with dish spring and following dish spring, axis body is by the rotor by being threaded, universal drive shaft, water cap and power transmission shaft constitute, universal drive shaft is arranged at the inside of universal drive shaft housing, rotor is assemblied in the inside of stator, is equipped with the water cap between the left end of power transmission shaft and the right-hand member of described universal drive shaft.
The beneficial effects of the utility model are: filled up existing helicoid hydraulic motor specification from 120 drilling tools to the blank 165 drilling tools, be more suitable for 61/2 than 120 drilling tools that " use in the well of above specification, reliability and performance significantly improve.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the sectional view of the described helicoid hydraulic motor of the utility model embodiment.
Among the figure: 1, housing; 2, axis body; 3, stator; 4, universal drive shaft housing; 5, transmission shaft shell; 6, transit joint; 7, rotor; 8, universal drive shaft; 9, water cap; 10, power transmission shaft; 11, go up the journal bearing group; 12, thrust bearings; 13, lower radial bearing group; 14, go up the dish spring; 15, following dish spring.
The specific embodiment
As shown in Figure 1, the described a kind of helicoid hydraulic motor of the utility model embodiment, comprise housing 1 and axis body 2, described housing 1 is made of the stator 3 that connects in turn by straight thread, universal drive shaft housing 4 and transmission shaft shell 5, one end of stator 3 is by the transit joint 6 that is threaded, transit joint 6 connects other drilling tool of top, the mounted inside of transmission shaft shell 5 has last journal bearing group 11, thrust bearings 12 and lower radial bearing group 13, wherein the two ends of thrust bearings 12 are respectively equipped with dish spring 14 and following dish spring 15, the injury that protection thrust bearings 12 is not subjected to drilling tool to pause and hit; Axis body 2 is by constituting by rotor 7, universal drive shaft 8, water cap 9 and the power transmission shaft 10 that is threaded, universal drive shaft 8 is arranged at the inside of universal drive shaft housing 4, rotor 7 is assemblied in the inside of stator 3, is equipped with water cap 9 between the right-hand member of the left end of power transmission shaft 13 and described universal drive shaft 8.
At the wellbore construction scene, the utility model is connected with other drilling tools such as drill bit, drill collars is lowered to 61/2 "～83/8 " specification well, open borehole pump and promptly start working, drive the drill bit rotary drilling.Because the thrust bearing damping has been arranged, will effectively avoid the cracked problem of thrust bearing, stator case adopts straight thread to be connected with the universal drive shaft housing, the problem that can effectively avoid this place to thread off, reliability is strengthened.
Claims (1)
1. helicoid hydraulic motor, comprise housing (1) and axis body (2), it is characterized in that: described housing (1) is made of the stator that connects in turn by straight thread (3), universal drive shaft housing (4) and transmission shaft shell (5), one end of stator (3) is by the transit joint that is threaded (6), the mounted inside of transmission shaft shell (5) has last journal bearing group (11), thrust bearings (12) and lower radial bearing group (13), and wherein the two ends of thrust bearings (12) are respectively equipped with dish spring (14) and following dish spring (15); Axis body (2) is by constituting by rotor (7), universal drive shaft (8), water cap (9) and the power transmission shaft (10) that is threaded, universal drive shaft (8) is arranged at the inside of universal drive shaft housing (4), rotor (7) is assemblied in the inside of stator (3), is equipped with water cap (9) between the right-hand member of the left end of power transmission shaft (13) and universal drive shaft (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201960890U CN201687386U (en) | 2010-05-19 | 2010-05-19 | Screw drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201960890U CN201687386U (en) | 2010-05-19 | 2010-05-19 | Screw drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687386U true CN201687386U (en) | 2010-12-29 |
Family
ID=43375670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201960890U Expired - Lifetime CN201687386U (en) | 2010-05-19 | 2010-05-19 | Screw drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697107A (en) * | 2012-09-28 | 2014-04-02 | 中国石油化工股份有限公司 | Drill column axial vibration drag reduction tool driven by motor |
| CN105156023A (en) * | 2015-09-24 | 2015-12-16 | 四川飞翔能源有限公司 | Screw drill |
-
2010
- 2010-05-19 CN CN2010201960890U patent/CN201687386U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697107A (en) * | 2012-09-28 | 2014-04-02 | 中国石油化工股份有限公司 | Drill column axial vibration drag reduction tool driven by motor |
| CN105156023A (en) * | 2015-09-24 | 2015-12-16 | 四川飞翔能源有限公司 | Screw drill |
| CN105156023B (en) * | 2015-09-24 | 2017-09-01 | 四川飞翔能源有限公司 | Helicoid hydraulic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |
|
| CX01 | Expiry of patent term |