CN202926244U - Guide screw drilling tool with rotatable centralizer - Google Patents
Guide screw drilling tool with rotatable centralizer Download PDFInfo
- Publication number
- CN202926244U CN202926244U CN 201220534125 CN201220534125U CN202926244U CN 202926244 U CN202926244 U CN 202926244U CN 201220534125 CN201220534125 CN 201220534125 CN 201220534125 U CN201220534125 U CN 201220534125U CN 202926244 U CN202926244 U CN 202926244U
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- China
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- centralizer
- shell body
- screw rod
- drilling
- screw
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- Expired - Fee Related
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Abstract
The utility model relates to a guide screw drilling tool with a rotatable centralizer. The guide screw drilling tool with the rotatable centralizer comprises connectors, a drive shaft which is connected between the connectors, a screw shell body which is sleeved outside the drive shaft and the centralizer, wherein a planetary gear set is additionally arranged at the joint portion of the centralizer and the drive shaft on the screw shell body, and planetary gears are meshed with the outer wall of the drive shaft and the inner wall of the centralizer in a rotating mode. When a guide drills in a sliding mode, the overall drill tool does not revolve, the drill tool only drills forward in the sliding mode under the action of bit pressure, at this time, when a screw driver drives a drill bit to cut the stratum, the screw driver drives the screw centralizer to reversely revolve at a low speed through the planetary gears. The low-speed rotation of the centralizer not only plays a role in reducing friction of the drilling tool and repairing the well wall, but also better prevents the centralizer from being bonded and clamped with the well wall, thus the bit pressure can better be transmitted to the drill bit in time, the times of moving of the drill tool is reduced, safety in the sliding drilling under the well is improved, and the purposes that drilling efficiency is improved and comprehensive cost of drilling is reduced can be further achieved.
Description
Technical field
The utility model relates to a kind of stearable assemly with rotatable stabilizer in the field of tool such as oil and gas well drilling, geological prospecting, mine probing.
Background technology
In the process of oil and gas well drilling, geological prospecting, mine probing, the complex structural wells such as directional well, horizontal well, high angle hole, extended reach well are used more and more extensive, have higher requirement for drilling technology.in the steerable drilling process, domestic main employing is the slide drilling System Implementation drillng operation of power by MTR, screw rod drive this moment bit creeps into, and drill string itself does not rotate, but because the effect of deadweight lies low in the shaft bottom, in slip is crept into, because screw rod centralizer size is a lot of greater than the screw rod body, in the time of the screw rod deflecting, the meeting of screw rod centralizer is because of causing frictional resistance greatly and the sticking card of easy generation with borehole wall contact for a long time, thereby form to send and bore difficulty, the pressure of the drill can't be delivered on drill bit, cause in drilling well backing pressure serious, simultaneously, when centralizer initially glues card in the bottom, because the pressure of the drill can not be delivered on drill bit, will impel top drilling tool generation flexing and sticking being stuck on the borehole wall, thereby cause dangerous security incidents such as adhering to bit freezing.At present domestic also do not have good way to address this problem, frequently the mode of put-on and delegated activity drilling tool is avoided the generation of sticking card, but this greatly reduces the ability of the guiding efficient of creeping into and screw rod guiding, mainly abroad to use rotary steering drilling tool to become to slide to creep into and creep into into rotation, centralizer long-time single and borehole wall Contact time have been reduced, reduce the sticking card probability of drilling tool, but use rotary steerable tool with high costs.
Summary of the invention
The purpose of this utility model is that the sticking card of middle drilling tool is crept in the slip of screw rod guiding, load transfer is difficult, frictional resistance is large in order to reduce to greatest extent, the impact that the hole quality that is drilled to is poor, improve rate of penetration, reduce the construction integrated cost, a kind of stearable assemly with rotatable stabilizer is provided.
The technical scheme that its technical problem that solves the utility model adopts is: the screw rod shell body and the centralizer that comprise joint and be connected to the driving shaft between joint and be sleeved on the driving shaft outside, it is characterized in that: planetary gearsets is set up in the joint portion at screw rod shell body and centralizer and driving shaft, and the inwall of this planetary gear and driving shaft outer wall and centralizer consists of the rotation engagement.
Such scheme further comprises: be provided with bearing on centralizer and screw rod shell body rotation fitting face, described centralizer is that planetary gearsets is positioned on the screw rod shell body by planet stent by gear ring and the righting wing that is fixed on the gear ring outside structure that is combined into one.
The both ends of centralizer are provided with the centralizer end cap, after the centralizer end cap adopts sealing to be fixed on the screw rod shell body, are provided with sealing ring on the involutory surface of itself and centralizer.
The both ends of centralizer are provided with the centralizer end cap, after the centralizer end cap adopts sealing to be fixed on the end of centralizer, are provided with sealing ring on the involutory surface of itself and screw rod shell body.
Between screw rod shell body and driving shaft, sealing ring is installed, has been full of lubrication oil in whole planetary gear chamber, righting wing outside is shaped with tipper in advance.
effect of the present utility model: the stearable assemly with rotatable stabilizer is connected with drill bit, when the guiding slip is crept into, drilling tool integral body is not rotated, just creep into to front slide under the pressure of the drill effect, driving the screw rod centralizer by planetary gear in the process on screw driver drive bit cutting this moment stratum reversely rotates at low speed, slowly running of centralizer, both played the effect that reduces drilling tool frictional resistance and the finishing borehole wall, and can prevent well that centralizer and the borehole wall from sticking card occuring, thereby can better in time be delivered to the pressure of the drill on drill bit, reduced the number of times of movable drilling tool, improved the safety during the down-hole slip is crept into, reached again the raising drilling efficiency, reduce the purpose of drilling well integrated cost.Simultaneously, the utility model also have advantages of simple in structure, easy to operate, be convenient to install, safe and reliable.
Description of drawings
Fig. 1 is a kind of stearable assemly structural representation with rotatable stabilizer that proposes according to the utility model.
1-driving shaft, 2-screw rod shell body, 3-bearing, 4-gear ring, 5-planet stent, 6-planetary gear, the 7-righting wing, 8-centralizer end cap, 9-screw drive head, 10-sealing ring, 11-sealing ring, 12-bit adapter in figure
The specific embodiment
Describe the utility model in detail below in conjunction with accompanying drawing.
Smooth enough and seal request in above-described embodiment, also can save bearing and sealing ring, as long as can be satisfied in its joint portion.
Certainly can also increase in whole planetary gear chamber in above-described embodiment and be full of lubrication oil, righting wing outside is shaped with tipper in advance.
the utility model is connected with drill bit, when the turn on pump positioning operation, the rotor of mud drive screw motor rotates, the screw drive head drives drive shaft turns, driving shaft drives the righting wing by the planetary gear effect and rotates, in orientation process, whole drilling tool only creeps into to front slide, and can not rotate, the screw rod righting wing that rotates this moment has not only in time been repaired the new well of creeping into out but also has been reduced sliding-contact between long-time and the borehole wall, become and slide as rotating, make the pressure of the drill effectively to be delivered on drill bit, reduced simultaneously the frictional resistance moment of torsion during the drilling tool slip is crept into, reduced the sticking card of drilling tool probability, improved drilling efficiency, reach the purpose that reduces the drilling well integrated cost.
Claims (5)
1. stearable assemly with rotatable stabilizer, the screw rod shell body and the centralizer that comprise joint and be connected to the driving shaft between joint and be sleeved on the driving shaft outside, it is characterized in that: planetary gearsets is set up in the joint portion at screw rod shell body and centralizer and driving shaft, and the inwall of this planetary gear and driving shaft outer wall and centralizer consists of the rotation engagement.
2. the stearable assemly with rotatable stabilizer according to claim 1, it is characterized in that: be provided with bearing on centralizer and screw rod shell body rotation fitting face, described centralizer is that planetary gearsets is positioned on the screw rod shell body by planet stent by gear ring and the righting wing that is fixed on the gear ring outside structure that is combined into one.
3. the stearable assemly with rotatable stabilizer according to claim 2, it is characterized in that: the both ends of centralizer are provided with the centralizer end cap, after the centralizer end cap adopts sealing to be fixed on the screw rod shell body, be provided with sealing ring on the involutory surface of itself and centralizer.
4. the stearable assemly with rotatable stabilizer according to claim 2, it is characterized in that: the both ends of centralizer are provided with the centralizer end cap, after the centralizer end cap adopts sealing to be fixed on the end of centralizer, be provided with sealing ring on the involutory surface of itself and screw rod shell body.
5. according to claim 2 or 3,4 described stearable assemlies with rotatable stabilizer is characterized in that: between screw rod shell body and driving shaft, sealing ring is installed, has been full of lubrication oil in whole planetary gear chamber, righting wing outside is shaped with tipper in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220534125 CN202926244U (en) | 2012-10-18 | 2012-10-18 | Guide screw drilling tool with rotatable centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220534125 CN202926244U (en) | 2012-10-18 | 2012-10-18 | Guide screw drilling tool with rotatable centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926244U true CN202926244U (en) | 2013-05-08 |
Family
ID=48216217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220534125 Expired - Fee Related CN202926244U (en) | 2012-10-18 | 2012-10-18 | Guide screw drilling tool with rotatable centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926244U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835665A (en) * | 2014-03-24 | 2014-06-04 | 盐城市大冈石油工具厂有限责任公司 | Screw drill drilling, scraping and righting assembly |
| CN106089120A (en) * | 2016-04-07 | 2016-11-09 | 西南石油大学 | Big V-type rotary coupling centralizer |
| CN106609657A (en) * | 2015-10-22 | 2017-05-03 | 中国石油化工股份有限公司 | Drilling tool assembly and method for well drilling with same |
| CN111561274A (en) * | 2020-04-26 | 2020-08-21 | 中国石油集团渤海钻探工程有限公司 | Rotatable intelligent centralizer |
-
2012
- 2012-10-18 CN CN 201220534125 patent/CN202926244U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835665A (en) * | 2014-03-24 | 2014-06-04 | 盐城市大冈石油工具厂有限责任公司 | Screw drill drilling, scraping and righting assembly |
| CN106609657A (en) * | 2015-10-22 | 2017-05-03 | 中国石油化工股份有限公司 | Drilling tool assembly and method for well drilling with same |
| CN106089120A (en) * | 2016-04-07 | 2016-11-09 | 西南石油大学 | Big V-type rotary coupling centralizer |
| CN111561274A (en) * | 2020-04-26 | 2020-08-21 | 中国石油集团渤海钻探工程有限公司 | Rotatable intelligent centralizer |
| CN111561274B (en) * | 2020-04-26 | 2022-04-12 | 中国石油集团渤海钻探工程有限公司 | Rotatable intelligent centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20201018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |