CN2883646Y - Roller stabilizer - Google Patents
Roller stabilizer Download PDFInfo
- Publication number
- CN2883646Y CN2883646Y CN 200520128297 CN200520128297U CN2883646Y CN 2883646 Y CN2883646 Y CN 2883646Y CN 200520128297 CN200520128297 CN 200520128297 CN 200520128297 U CN200520128297 U CN 200520128297U CN 2883646 Y CN2883646 Y CN 2883646Y
- Authority
- CN
- China
- Prior art keywords
- roller
- trapezoidal
- grooves
- square
- roller shaft
- 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 roller stabilizer, comprising a body, a square plug, a roller shaft, a roller and a trapezoidal shaft seat. Longitudinal and symmetrical strip grooves are arranged on the outer cylindrical surface in the middle of the body; trapezoidal grooves and square grooves are symmetrically arranged at the two ends of the strip grooves; the square plug is arranged in the square grooves and connected with the body through bolts; the trapezoidal shaft seat is a trapezoidal block, on which a round hole is arranged, and fixed in the trapezoidal grooves; the roller shaft is arranged in the strip grooves on the body and fixed in the round hole on the trapezoidal shaft seat through the bolts; the roller is arranged on the roller shaft; the roller is pressed on the well wall by the driller to make the drill collar and the drill bit be forced right at the well center so as to not only stabilize the trace of the well center, but also reduce the additional torque on the driller caused by the irregular well during straight-hole drilling on a special ground layer to effectively prevent the problems of abrasion and fatigue fracture of the driller.
Description
Technical field: the utility model relates to a kind of roller stabilizer, belongs to the downhole tool of Controlling Borehole Trajectory in the petroleum drilling engineering.
Background technology: well track needs artificially to control frequently in drilling process, otherwise, just can not guarantee effectively that well track meets design requirement to reach the final purpose of probing.The active section of conventional stabilisers generally be with body be one, working surface adopts block carbide alloy or carbide alloy coating to make high-abrasive material, the well section wearing and tearing higher in abrasiveness are very fast, stabilizer usefulness is reduced, influence drillng operation, generally in deep-well once the cover stabilizer with once scrapping.Interchangeable shell type carbide alloy stabilizer was once used in the Liaohe Oil Field, its body is a whole ladder cylinder hollow pipe, and central exterior surface is processed with screw thread, is used for connecting with the work overcoat, carbide mosaic is at interchangeable work sleeve surface, and thread connection is endured with brill respectively in the body two ends.Because body adopts thread connection with the work overcoat, is easy to damage work overcoat and its surperficial carbide alloy when assembling is tightened, therefore, the stabilizer of this structure is unsuitable for often changing overcoat, thereby has limited the use of stabilizer.
Summary of the invention: the purpose of this utility model is for overcoming the above-mentioned defective in the background technology, a kind of novel roller stabilizer that the petroleum drilling operation mounting or dismounting are convenient, can change roller as required at the scene that is used for being provided.
The utility model is made up of body, square plug, roller shaft, roller, trapezoidal axle bed, body is a whole ladder cylinder hollow pipe, two ends link to each other with drilling rod by screw thread, on the middle external cylindrical surface of body, vertically have bar-shaped trough, the two ends symmetry of bar-shaped trough has dovetail groove and square groove, and square plug is placed in the square groove and by screw and links to each other with body; Trapezoidal axle bed is one to have the trapezoid block of circular hole, places in the dovetail groove; Roller shaft be positioned in the bar-shaped trough of body and by screw in the circular hole of trapezoidal axle bed, the radial and axial of restriction roller shaft moves; Roller housing on roller shaft, surperficial welding-on minor diameter hard alloy particle.
Invention effect: the utility model is connected in series to assigned address and drilling rod are linked together in the drilling tool, make roller diameter greater than bit diameter by drilling tool pressure, roller is pressed to the borehole wall, drill collar and drill bit are set upright by force in the well center, can not only Controlling Borehole Trajectory stable, can also reduce the drilling tool additional torque that increases because of hole anomaly in the straight well drilling process of special formation, effectively prevent problems such as drilling tool wearing and tearing or fatigue fracture, in addition, the utility model adopts trapezoidal axle bed and square plug to control the axial and radial motion of roller shaft, easy accessibility can be changed roller at the construction field (site).
Description of drawings: Fig. 1 is the structural representation of utility model;
Fig. 2 is the A-A direction drawing in side sectional elevation along accompanying drawing 1.
The specific embodiment: the utility model is described in further detail below in conjunction with accompanying drawing:
By accompanying drawing 1, accompanying drawing 2 as can be known, the utility model is made up of body 1, square plug 2, roller shaft 4, roller 6, trapezoidal axle bed 8, body 1 is a whole ladder cylinder hollow pipe, two ends link to each other with drilling rod, have 3 vertical bar-shaped troughs of 120 degree symmetries each other on the middle external cylindrical surface of body 1, the two ends symmetry of bar-shaped trough has dovetail groove and square groove, and square plug 2 is placed in the square groove and by screw 3 and links to each other with body 1; Trapezoidal axle bed 8 is one to have the trapezoid block of circular hole, places in the dovetail groove; Roller shaft 4 be positioned in the bar-shaped trough and by screw in the circular hole of trapezoidal axle bed 8, the radial and axial of restriction roller shaft 4 moves; Roller 6 is enclosed within on the roller shaft 4, surperficial welding-on minor diameter hard alloy particle; Be located between roller 6 and the roller shaft 4 and be provided with axle sleeve 5, can reduce between roller 6 and the roller shaft 4 friction, protection roller 6 prolongs 6 application lifes of roller; At roller 6 two ends planchet 7 can be installed, be used to adjust the gap of roller 6 and the dovetail groove of body 1.
During use, the utility model is connected in series to the drilling tool assigned address and drilling rod is linked together, by drilling tool pressure roller 6 is pressed to the borehole wall in creeping into, when drilling tool rotates, roller 6 is in body 1 upper edge borehole axis rotation and carry out rotation, produce rolling friction with the borehole wall, the resistance of reducing friction plays the effect of stablizing and setting upright drilling tool simultaneously.
Claims (4)
1, a kind of roller stabilizer, form by body (1), square plug (2), roller shaft (4), roller (6), trapezoidal axle bed (8), body (1) is a whole ladder cylinder hollow pipe, two ends link to each other with drilling rod, it is characterized in that having on the middle external cylindrical surface of body (1) bar-shaped trough of vertical symmetry, the two ends symmetry of bar-shaped trough has dovetail groove and square groove, and square plug (2) is placed in the square groove and by screw (3) and links to each other with body (1); Trapezoidal axle bed (8) is one to have the trapezoid block of circular hole, places in the dovetail groove; Roller shaft (4) be positioned in the bar-shaped trough and by screw in the circular hole of trapezoidal axle bed (8), roller (6) is enclosed within on the roller shaft (4).
2, roller stabilizer according to claim 1 is characterized in that being provided with axle sleeve (5) between roller (6) and roller shaft (4), at roller (6) two ends planchet (7) can be installed.
3, roller stabilizer according to claim 1 and 2 is characterized in that, has 3 bar-shaped troughs of 120 degree symmetries each other on the middle external cylindrical surface of body (1).
4, roller stabilizer according to claim 3 is characterized in that at the surperficial welding-on of roller (6) the minor diameter hard alloy particle being arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520128297 CN2883646Y (en) | 2005-11-23 | 2005-11-23 | Roller stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520128297 CN2883646Y (en) | 2005-11-23 | 2005-11-23 | Roller stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2883646Y true CN2883646Y (en) | 2007-03-28 |
Family
ID=37956708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520128297 Expired - Fee Related CN2883646Y (en) | 2005-11-23 | 2005-11-23 | Roller stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2883646Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358508B (en) * | 2007-08-01 | 2012-10-03 | 贵州高峰石油机械股份有限公司 | Method for producing roller of multi-functional stabilizer and roller of multi-functional stabilizer |
| CN104405298A (en) * | 2014-10-17 | 2015-03-11 | 中国石油天然气集团公司 | Self-cleaning roller stabilizer for oil-field well drilling |
-
2005
- 2005-11-23 CN CN 200520128297 patent/CN2883646Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358508B (en) * | 2007-08-01 | 2012-10-03 | 贵州高峰石油机械股份有限公司 | Method for producing roller of multi-functional stabilizer and roller of multi-functional stabilizer |
| CN104405298A (en) * | 2014-10-17 | 2015-03-11 | 中国石油天然气集团公司 | Self-cleaning roller stabilizer for oil-field well drilling |
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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 |