CN2658371Y - Integral amplifier - Google Patents
Integral amplifier Download PDFInfo
- Publication number
- CN2658371Y CN2658371Y CN 200320106871 CN200320106871U CN2658371Y CN 2658371 Y CN2658371 Y CN 2658371Y CN 200320106871 CN200320106871 CN 200320106871 CN 200320106871 U CN200320106871 U CN 200320106871U CN 2658371 Y CN2658371 Y CN 2658371Y
- Authority
- CN
- China
- Prior art keywords
- helical form
- form rib
- teeth
- rib band
- monolithic
- 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 drilling tool for well bore enlarging, comprising a body, a spiral band, diameter-defense teeth, and cutting teeth. The body is a steel hollow cylinder. Threads connecting with the drilling tool are machined on both ends of the body. A spiral band is machined on the external surface of the middle part of the body. A plurality of cylindrical holes are drilled on the external surface of the middle part of the spiral band, with a plurality of carbide diameter-defense teeth welded on the internal surface of the holes. Rectangular slots are milled on the side surface of the spiral band and carbide cutting teeth are welded inside the slots, carbide cutting teeth are also welded on the two ends of the spiral band. Since the spiral band adopts a full-containing structure, and cutting teeth and diameter-defense teeth contacting with the wall of well always exist during rotation to ensure that the enlarger can carry out continuous cutting of the wall of well. Meanwhile, cutting teeth on the two ends of the spiral band always provides the function of well wall cutting and rectification. The utility model plays an important role in preventing bit freezing, reducing the drilling time, decreasing the drilling cost.
Description
Technical field the utility model relates to a kind of oil drilling instrument, especially a kind ofly enlarges the drilling tool that well is used.
In the background technology drilling process, the borehole wall is owing to the immersion and the other reasons of drilling fluid, and the easy necking down of the borehole wall of drill bit top is dwindled owing to hole diameter when pulling out of hole like this, and drill bit can't pass through smoothly, very easily causes lock of tool drilling.Because the general centralizer that uses has only the effect of guarantor footpath, does not cut function, can't cut the borehole wall when making a trip, because its external diameter and borehole diameter only differ several millimeters, increased the possibility of bit freezing in the well section of easy undergauge simultaneously.Therefore in the practical operation, just need stop to creep into after normally creeping into a period of time, drill bit is mentioned the finishing borehole wall, in order to avoid after creeping into for a long time, well is dwindled, drill bit can't pass through during trip-out, even bit freezing, so just prolonged drilling time, increased drilling cost.
The summary of the invention the purpose of this utility model is a kind of monolithic expander of design, to solve common centralizer because do not cut function, the necessary often problem of trip-out reaming in the drilling process.A kind of monolithic expander of the utility model, it comprises body, gauge teeth, cutting teeth.Body is the steel hollow cylinder, have and the joining screw thread of drilling tool at the two ends of body car, on the external surface of body middle part, be processed with helical form rib band, the section configuration of helical form rib band is up-narrow and down-wide trapezoidal, wherein on the middle part external surface of helical form rib band, be drilled with several cylinders shape hole, welding-on has some carbide alloy gauge teeths in the hole, when rotating, helical form rib band mills out rectangular groove with corner angle side that the borehole wall at first contacts, welding-on has the carbide cutting tooth in groove, and also welding-on has the carbide cutting tooth at the both ends of helical form rib band.The utility model need not just to mention the drill bit reaming at set intervals in drilling process, has both prolonged the application life of drill bit, has saved drilling time and cost again.The utility model can be oil drilling minimizing drilling time, the reduction drilling cost plays a significant role.
Description of drawings Fig. 1 is a structural representation of the present utility model.1-body among the figure, 2-helical form rib band, 3-gauge teeth, 4-cutting teeth.
The specific embodiment is with reference to accompanying drawing 1, a kind of monolithic expander, it is by body (1), helical form rib band (2), gauge teeth (3), cutting teeth (4) is formed, body (1) is the steel hollow cylinder, two ends car at body (1) has and the joining screw thread of drilling tool, on the external surface of body middle part, be processed with five helical form rib bands, on the middle part of helical form rib band and borehole wall opposed outer surface, be drilled with several cylinders shape hole, welding-on has some carbide alloy gauge teeths (3) in the hole, when rotating, helical form rib band mills out rectangular groove with corner angle side that the borehole wall at first contacts, welding-on has carbide cutting tooth (4) in groove, and also welding-on has the carbide cutting tooth at the both ends of helical form rib band.For increasing the annular space runner, reduce head loss, full subsumption architecture is adopted in the distribution of helical form rib band, promptly always has cutting teeth and gauge teeth and the borehole wall to keep in touch in rotary course, guarantees that expander can cut the borehole wall continuously.The gauge teeth of welding-on is staggered along the rotation direction of helical form rib band on the helical form rib band, and the cutting teeth at side and two ends adopts continuously arranged mode.In drilling process, the utility model is connected between the drilling rod of about 100 meters of drill bit tops, it rotates with drilling tool when creeping into.Under when boring, the cutting teeth of the nearly drill bit end cutting borehole wall, gauge teeth is also repaired the borehole wall simultaneously, can play centralizing function to drill bit simultaneously, prevents well deflection.Because also there is cutting teeth the upper end of expander helical form rib band, during trip-out, expander is the machinable borehole wall also, and gauge teeth also can further be repaired the borehole wall, guarantees that the drilling tool and the drill bit of expander below large-size can pass through smoothly.
Claims (6)
1, a kind of monolithic expander, it comprises body (1), helical form rib band (2), it is characterized in that body (1) is the steel hollow cylinder, two ends car at body (1) has and the joining screw thread of drilling tool, on the external surface of body middle part, be processed with helical form rib band, on the middle part of helical form rib band and borehole wall opposed outer surface, be drilled with several holes, welding-on has some carbide alloy gauge teeths (3) in the hole, mill out rectangular groove with corner angle side that the borehole wall at first contacts when helical form rib band rotates, welding-on has carbide cutting tooth (4) in groove.
2, a kind of monolithic expander according to claim 1, the section configuration that it is characterized in that described helical form rib band are up-narrow and down-wide trapezoidal.
3, a kind of monolithic expander according to claim 1 is characterized in that the helical form rib on the external surface of body middle part has five.
4, a kind of monolithic expander according to claim 1 is characterized in that full subsumption architecture is adopted in the distribution of helical form rib band, promptly always has cutting teeth and gauge teeth and the borehole wall to keep in touch in rotary course.
5, a kind of monolithic expander according to claim 1, the gauge teeth that it is characterized in that welding-on on the helical form rib band is staggered along the rotation direction of helical form rib band, and the cutting teeth at corner angle side and two ends adopts continuous arrangement mode.
6, a kind of monolithic expander according to claim 1 is characterized in that the hole of being bored at helical form rib band middle part is a cylindrical hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320106871 CN2658371Y (en) | 2003-11-14 | 2003-11-14 | Integral amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320106871 CN2658371Y (en) | 2003-11-14 | 2003-11-14 | Integral amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658371Y true CN2658371Y (en) | 2004-11-24 |
Family
ID=34341932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320106871 Expired - Fee Related CN2658371Y (en) | 2003-11-14 | 2003-11-14 | Integral amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658371Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205796B (en) * | 2006-12-20 | 2011-06-01 | 杜晓瑞 | Device for drilling big borehole with small drill head |
| CN103967416A (en) * | 2014-05-19 | 2014-08-06 | 郑州神利达钻采设备有限公司 | Multiple-gauge-protection drilling tool |
| CN106168116A (en) * | 2016-08-25 | 2016-11-30 | 中国石油集团渤海钻探工程有限公司 | With boring micro-reaming borehole wall dressing tool and using method thereof |
| CN106437523A (en) * | 2016-11-16 | 2017-02-22 | 河南广度超硬材料有限公司 | Drilling head capable of grinding and finishing drillhole wall |
| CN108533180A (en) * | 2018-04-24 | 2018-09-14 | 中国海洋石油集团有限公司 | A kind of drilling engineering is with boring hole-drawing device and reaming method |
| CN108625809A (en) * | 2018-06-08 | 2018-10-09 | 沧州格锐特钻头有限公司 | A kind of stabilizer for repairing the borehole wall with brill |
| CN113153198A (en) * | 2021-03-03 | 2021-07-23 | 河南易发石油工程技术有限公司 | Bidirectional well trimmer for well drilling |
-
2003
- 2003-11-14 CN CN 200320106871 patent/CN2658371Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205796B (en) * | 2006-12-20 | 2011-06-01 | 杜晓瑞 | Device for drilling big borehole with small drill head |
| CN103967416A (en) * | 2014-05-19 | 2014-08-06 | 郑州神利达钻采设备有限公司 | Multiple-gauge-protection drilling tool |
| CN103967416B (en) * | 2014-05-19 | 2016-06-08 | 郑州神利达钻采设备有限公司 | A kind of multiple gauge drilling tool |
| CN106168116A (en) * | 2016-08-25 | 2016-11-30 | 中国石油集团渤海钻探工程有限公司 | With boring micro-reaming borehole wall dressing tool and using method thereof |
| CN106168116B (en) * | 2016-08-25 | 2018-12-25 | 中国石油集团渤海钻探工程有限公司 | With the micro- reaming borehole wall dressing tool of brill and its application method |
| CN106437523A (en) * | 2016-11-16 | 2017-02-22 | 河南广度超硬材料有限公司 | Drilling head capable of grinding and finishing drillhole wall |
| CN108533180A (en) * | 2018-04-24 | 2018-09-14 | 中国海洋石油集团有限公司 | A kind of drilling engineering is with boring hole-drawing device and reaming method |
| CN108625809A (en) * | 2018-06-08 | 2018-10-09 | 沧州格锐特钻头有限公司 | A kind of stabilizer for repairing the borehole wall with brill |
| CN113153198A (en) * | 2021-03-03 | 2021-07-23 | 河南易发石油工程技术有限公司 | Bidirectional well trimmer for 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 |