CN104499942A - Improved method and structure of roller wiper - Google Patents
Improved method and structure of roller wiper Download PDFInfo
- Publication number
- CN104499942A CN104499942A CN201410847544.1A CN201410847544A CN104499942A CN 104499942 A CN104499942 A CN 104499942A CN 201410847544 A CN201410847544 A CN 201410847544A CN 104499942 A CN104499942 A CN 104499942A
- Authority
- CN
- China
- Prior art keywords
- roller
- drawing device
- hole
- major
- wheel assembly
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Abstract
The invention relates to an improved method and structure of a roller wiper, and discloses a method and a device for machining symmetric inclined serrated lines on a narrow window slot side of a tubular part. Symmetric inclined serrated slots are milled in the narrow window slot side of the tubular part by relative movement between a disc milling cutter rotating on a horizontal milling machine spindle and the tubular part. Two parallel forming disc milling cutters are simultaneously mounted on a milling cutter bar, the requirement of the distance between the serrated slots is met by the aid of a spacer sleeve, and cutting blades can synchronously move. Owing to the method for milling by the double cutters, two pairs of parallel slots can be machined once, and milling efficiency is improved. The method can be popularized to similarly form a window in a circumference and mill the slots in optional shapes in two side walls of the window.
Description
Technical field
the present invention relates to improving one's methods and structure of a kind of roller hole-drawing device, belong to down-hole workover tool technical field.
Background technology
existing hole-drawing device roller has three kinds of structures, and one is carbide inserts post on roller body, and the second is on roller body, cover weldering hard alloy particle, and the third mills out helical teeth at roller body external surface, then teeth portion improved its hardness through Overheating Treatment.From on-the-spot trial state, be more suitable for hard formation with inserted roller, the scope of application is wider, and the more acceptant inserted type roller structure of client is because hard alloy columnar hardness is high, more wear-resisting.But, existing roller (comprising inserted, weldering tooth, mill teeth) in use, also there is deficiency, the inserted roller of carbide alloy in such as technology 201320070626.0 " a kind of six roller hole-drawing devices ", when the scraping borehole wall, easily there is the stuck phenomenon such as not turn of roller tooth avalanche, roller.Reason is that the stressed size inequality of hard alloy columnar that roller three grades of cylinders are inlayed causes avalanche, once alloy column drops, does not just have the effect of the finishing borehole wall.Roller is stuck is because down-hole has mud stone to be deposited in inside roller groove, hinders the rotation of roller.
Summary of the invention
the object of the invention is to, improving one's methods and structure of a kind of roller hole-drawing device is provided, easily come off to solve roller hole-drawing device alloy column and rotate the technical problem had some setbacks, thus overcoming the deficiencies in the prior art.
technical scheme of the present invention:
a kind of roller hole-drawing device of the present invention improve one's methods for, in the method, roll wheel assembly adopts column structure, and to increase the contact area of roller and the borehole wall, uniform force when making the tooth scraping borehole wall on roller, reduces the frequency falling tooth generation.
in preceding method, described roll wheel assembly and the gap between body adopt small―gap suture to coordinate, and to prevent larger rock particles from entering gap between roller set and body, reduce roller by the probability of card.
structure according to of the present invention a kind of roller hole-drawing device of said method formation is that this structure comprises body, and body is tubulose; Body stage casing is major-diameter thick-wall pipe, and body two ends are Small/mini-diameter Tube; Major-diameter thick-wall pipe periphery is evenly equipped with axial semicircle groove, is provided with roll wheel assembly in axial semicircle groove.
in aforementioned structure, described roll wheel assembly comprises roller body, and roller body is the cylinder that two ends are provided with rotating shaft, and the hole on the rotating shaft at roller body two ends and major-diameter thick-wall pipe is rotationally connected; The cylindrical of roller body is provided with cutting lay.
in aforementioned structure, described cutting lay is the carbide alloy cylinder become with carbide mosaic.
in aforementioned structure, the radius of gyration of described carbide alloy cylinder is greater than the radius of major-diameter thick-wall pipe.
in aforementioned structure, the spacing between described carbide alloy cylinder and axial semicircle groove is not more than 3mm.
owing to have employed technique scheme, compared with prior art, the present invention can solve roller and meet card problem, and roller does not block, and whole hole-drawing device is also just not easy to block in the present invention, the risk of card thus reduction downhole tool is hampered; The improvement of this structure simultaneously, can reduce hard alloy columnar and collapse the generation that tooth falls tooth phenomenon, carbide alloy can keep complete, also just improves reaming quality and efficiency.Overcome the deficiencies in the prior art.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention;
fig. 2 is the A-A sectional drawing of Fig. 1;
fig. 3 is the structural representation of prior art;
fig. 4 is the B-B sectional drawing of Fig. 3.
being labeled as in accompanying drawing: the axial semicircle groove of 1-major-diameter thick-wall pipe, 2-Small/mini-diameter Tube, 3-, 4-roller body, 5-rotating shaft, 6-carbide alloy cylinder, the groove of 7-prior art, the roller body of 8-prior art.
Detailed description of the invention
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
Embodiment
a kind of roller hole-drawing device of the present invention improve one's methods for, as depicted in figs. 1 and 2: in the method, roll wheel assembly adopts column structure, to increase the contact area of roller and the borehole wall, uniform force when making the tooth scraping borehole wall on roller, reduces the frequency falling tooth generation.Gap between roll wheel assembly with body adopts small―gap suture to coordinate, and to prevent larger rock particles from entering gap between roller set and body, reduction roller is by the probability of card.
structure according to of the present invention a kind of roller hole-drawing device of said method formation is that as depicted in figs. 1 and 2: this structure comprises body, body is tubulose; Body stage casing is major-diameter thick-wall pipe 1, and body two ends are Small/mini-diameter Tube 2; Major-diameter thick-wall pipe 1 periphery is evenly equipped with axial semicircle groove 3, is provided with roll wheel assembly in axial semicircle groove 3.Roll wheel assembly comprises roller body 4, and roller body 4 is cylinders that two ends are provided with rotating shaft 5, and the rotating shaft 5 at roller body 4 two ends is rotationally connected with the hole on major-diameter thick-wall pipe 1; The cylindrical of roller body is provided with cutting lay.Cutting lay is the carbide alloy cylinder 6 become with carbide mosaic.The radius of gyration of carbide alloy cylinder 3 is greater than the radius of major-diameter thick-wall pipe 1.Spacing between carbide alloy cylinder 3 and axial semicircle groove 3 is not more than 3mm.
fig. 3 and Fig. 4 is the structural representation of prior art, as seen from Figure 3, the roller body 8 of prior art is step-like roller body, the outside cylinder of step-like roller body is three grades of cylinders, contact surface roller body cutting position and the borehole wall is little,, easily there is de-tooth phenomenon in discontinuity during the tooth scraping borehole wall on roller.As seen from Figure 4, groove 7 side of the being groove of prior art, after roller installs, the gap between roller and roller groove is comparatively large, and the mud cake being deposited in clearance groove is increased, and larger rock block is also stuck in face, face than being easier to enter, and adds roller by the probability of card.
Claims (7)
1. the improving one's methods of a roller hole-drawing device, is characterized in that: in the method, roll wheel assembly adopts column structure, and to increase the contact area of roller and the borehole wall, uniform force when making the tooth scraping borehole wall on roller, reduces the frequency falling tooth generation.
2. the improving one's methods of roller hole-drawing device according to claim 1, it is characterized in that: described roll wheel assembly and the gap between body adopt small―gap suture to coordinate, to prevent larger rock particles from entering gap between roller set and body, reduce roller by the probability of card.
3. the structure of roller hole-drawing device that method is formed according to claim 1 or 2, comprises body, it is characterized in that: body is tubulose; Body stage casing is major-diameter thick-wall pipe (1), and body two ends are Small/mini-diameter Tube (2); Major-diameter thick-wall pipe (1) periphery is evenly equipped with axial semicircle groove (3), and axial semicircle groove is provided with roll wheel assembly in (3).
4. the structure of roller hole-drawing device according to claim 3, it is characterized in that: described roll wheel assembly comprises roller body (4), roller body (4) is the cylinder that two ends are provided with rotating shaft (5), and the rotating shaft (5) at roller body (4) two ends is rotationally connected with the hole on major-diameter thick-wall pipe (1); The cylindrical of roller body is provided with cutting lay.
5. the structure of roller hole-drawing device according to claim 4, is characterized in that: described cutting lay is with carbide mosaic on roller body cylindrical, the carbide alloy cylinder (6) of formation.
6. the structure of roller hole-drawing device according to claim 5, is characterized in that: the radius of gyration of described carbide alloy cylinder (3) is greater than the radius of major-diameter thick-wall pipe (1).
7. the structure of roller hole-drawing device according to claim 6, is characterized in that: the spacing between described carbide alloy cylinder (3) and axial semicircle groove (3) is not more than 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847544.1A CN104499942A (en) | 2014-12-29 | 2014-12-29 | Improved method and structure of roller wiper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847544.1A CN104499942A (en) | 2014-12-29 | 2014-12-29 | Improved method and structure of roller wiper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104499942A true CN104499942A (en) | 2015-04-08 |
Family
ID=52941383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410847544.1A Pending CN104499942A (en) | 2014-12-29 | 2014-12-29 | Improved method and structure of roller wiper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104499942A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608006A (en) * | 2019-09-24 | 2019-12-24 | 重庆科技学院 | Well wall repairing type roller guide shoe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3659663A (en) * | 1970-12-28 | 1972-05-02 | Dresser Ind | Borehole reamer-stabilizer with improved fluid circulation |
| US3820613A (en) * | 1972-12-29 | 1974-06-28 | Western Rock Bit Co Ltd | Roller reamer stabilizer |
| US4793425A (en) * | 1985-06-26 | 1988-12-27 | White Kenneth M | Profiled body roller-reamer stabilizer |
| GB2313860A (en) * | 1996-06-06 | 1997-12-10 | Paul Bernard Lee | Reamer with radially adjustable rollers |
| CN201943573U (en) * | 2011-01-24 | 2011-08-24 | 王琪 | Novel drilling machine for drilling holes |
-
2014
- 2014-12-29 CN CN201410847544.1A patent/CN104499942A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3659663A (en) * | 1970-12-28 | 1972-05-02 | Dresser Ind | Borehole reamer-stabilizer with improved fluid circulation |
| US3820613A (en) * | 1972-12-29 | 1974-06-28 | Western Rock Bit Co Ltd | Roller reamer stabilizer |
| US4793425A (en) * | 1985-06-26 | 1988-12-27 | White Kenneth M | Profiled body roller-reamer stabilizer |
| GB2313860A (en) * | 1996-06-06 | 1997-12-10 | Paul Bernard Lee | Reamer with radially adjustable rollers |
| CN201943573U (en) * | 2011-01-24 | 2011-08-24 | 王琪 | Novel drilling machine for drilling holes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608006A (en) * | 2019-09-24 | 2019-12-24 | 重庆科技学院 | Well wall repairing type roller guide shoe |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |