CN2549155Y - Drill bit for catching broken casing - Google Patents
Drill bit for catching broken casing Download PDFInfo
- Publication number
- CN2549155Y CN2549155Y CN 02211442 CN02211442U CN2549155Y CN 2549155 Y CN2549155 Y CN 2549155Y CN 02211442 CN02211442 CN 02211442 CN 02211442 U CN02211442 U CN 02211442U CN 2549155 Y CN2549155 Y CN 2549155Y
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- CN
- China
- Prior art keywords
- welded
- board
- utility
- model
- casing
- 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 discloses a casing tube fracture contraction bit which mainly comprises a circular ring cylindrical body. The upper end of the body is provided with a slot. The utility model is charThe utility model discloses a drill bit for catching broken casing, comprising a columnar body. A channel groove is cut at the upper end of the body. The utility model is characterized in that the a racterized in that a supporting board is welded on the body on a lateral face of the slot; a bearing board is fixed in the slot. An artificial diamond composite wafer is patched and welded on the suppoesting board is welded on the body at the profile of the channel groove, wherein, a support board is fixed in the channel groove, and a synthetic round sheet of artificial diamond is inlaid and weldedrting board; an ultra hard material sheet is paved and welded on the bearing board. Hard alloy welding rods are piled up and welded on two sides of the supporting board and the bearing board and insid on the resting board. A superhard material sheet is placed and welded on the support board. Besides, superhard alloy welding strips are welded through resurfacing weld on both sides of the resting boe the slot. The utility model has reasonable structural design and can easily contract the lower fracture of a fractured casing tube into a milling pipe orifice, so the casing tube fracture contractioard and the support board as well as in the channel groove. With reasonable design and structure, the utility model, capable of catching broken lower fracture of the casing in an inner hole of a millin bit is an essential tool for lining taking operation. ng pipe, is a necessary tool in the work of casing removal.
Description
One, technical field: the utility model relates to a kind of oil field oil, well well workover drill bit, and particularly a kind of sleeve pipe fracture draws the receipts drill bit.
Two, background technology: drawing the receipts milling bit is the indispensable instrument of getting the cover operation, should overlap in the operation and mill rock of borehole and cement sheath, cover mills the sleeve pipe fracture again, the present receipts milling bit that draws only has single performance, need many drill bits repeatedly to descend well operations just can finish and get the cover operation, not only prolong man-hour, and increased cost of production.
Three, summary of the invention: the purpose of this utility model just is to provide under a kind of the need well operations once can overlap to mill the sleeve pipe fracture and draw the drill bit of receiving in the milling pipe endoporus---and the sleeve pipe fracture draws the receipts drill bit.Technical solution of the present utility model is: described drill bit mainly includes the body of annulus column, upper end at body offers groove, on the body at groove side surface place, be welded with support plate, in groove, be fixed with supporting plate, welding-on has the compound disk of diamond on support plate, be welded with the superhard material sheet on the supporting plate upper berth, built-up welding has carbide electrode in the both sides of support plate and supporting plate and groove.The utility model reasonable in design, have and overlap the dual-use function that mills rock of borehole, cement sheath and sleeve pipe fracture, therefore adopt well operations under the drill bit once can finish bad break sleeve pipe fracture is drawn operation in the endoporus of receiving milling pipe, thereby shortened man-hour greatly, reduce the production run maintenance cost, reduced working strength of workers.
Four, description of drawings: Fig. 1 is that the main TV structure of the utility model embodiment partly cuts open schematic diagram;
Fig. 2 is the plan structure schematic diagram of the utility model embodiment.
Five, the specific embodiment: with reference to accompanying drawing, described drill bit mainly includes the body 1 of annulus column, the upper end of body 1 is bell mouth shape, offer a plurality of uniform grooves on it, be welded with support plate 2 on the body 1 at groove side surface place, be fixed with supporting plate 3 in groove, welding-on has the compound disk 4 of diamond on support plate 2, be welded with superhard material sheet 5 on supporting plate 3 upper berths, built-up welding has carbide electrode 6 in the both sides of support plate 2 and supporting plate 3 and groove.Inwall of the present utility model is flat, does not have cutting teeth.
Claims (1)
1, a kind of sleeve pipe fracture draws the receipts drill bit, mainly include the body (1) of annulus column, upper end at body (1) offers groove, it is characterized in that on the body (1) at groove side surface place, being welded with support plate (2), in groove, be fixed with supporting plate (3), going up welding-on at support plate (2) has the compound disk of diamond (4), is welded with superhard material sheet (5) on supporting plate (3) upper berth, and built-up welding has carbide electrode (6) respectively in the both sides of support plate (2) and supporting plate (3) and groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211442 CN2549155Y (en) | 2002-04-22 | 2002-04-22 | Drill bit for catching broken casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211442 CN2549155Y (en) | 2002-04-22 | 2002-04-22 | Drill bit for catching broken casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2549155Y true CN2549155Y (en) | 2003-05-07 |
Family
ID=33691348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02211442 Expired - Fee Related CN2549155Y (en) | 2002-04-22 | 2002-04-22 | Drill bit for catching broken casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2549155Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886529A (en) * | 2009-05-12 | 2010-11-17 | 崔朝轩 | Technique for repairing fault broken well and opening up passage |
| CN105229255A (en) * | 2013-03-31 | 2016-01-06 | 六号元素磨料股份有限公司 | Superhard construction body and manufacture method thereof |
-
2002
- 2002-04-22 CN CN 02211442 patent/CN2549155Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886529A (en) * | 2009-05-12 | 2010-11-17 | 崔朝轩 | Technique for repairing fault broken well and opening up passage |
| CN101886529B (en) * | 2009-05-12 | 2013-07-10 | 崔朝轩 | Technique for repairing fault broken well and opening up passage |
| CN105229255A (en) * | 2013-03-31 | 2016-01-06 | 六号元素磨料股份有限公司 | Superhard construction body and manufacture method thereof |
| CN105229255B (en) * | 2013-03-31 | 2020-02-14 | 六号元素磨料股份有限公司 | Superhard structure and method of manufacturing same |
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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 |