CN2739343Y - Long well section two-way hole-drawing device for well drilling - Google Patents
Long well section two-way hole-drawing device for well drilling Download PDFInfo
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- CN2739343Y CN2739343Y CN 200420011372 CN200420011372U CN2739343Y CN 2739343 Y CN2739343 Y CN 2739343Y CN 200420011372 CN200420011372 CN 200420011372 CN 200420011372 U CN200420011372 U CN 200420011372U CN 2739343 Y CN2739343 Y CN 2739343Y
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Abstract
The utility model discloses a long well section two-way hole-drawing device for well drilling, which is characterized in that: the utility model is composed of a left end connecting section and a right end connecting portion, and a middle working section. The left end is an internal thread; the middle portion is the working section; the right end is an external thread, and the working section is combined by an external cylindrical screw surface, and a screw surface, both ends of which are drum-shaped. Since the working surface of the utility model adopts a unique structure, which is combined by the cylindrical screw surface, and the drum-shaped screw surface, both sides of which are symmetrical; while in use, the device can not only proceed positive hole-drawing, but also can proceed reverse hole-drawing, and simultaneously the utility model has the strengthening action. In addition, the long well section two-way hole-drawing device is integrally processed, and the usage is safe and reliable.
Description
Technical field
The utility model relates to the special equipment in a kind of petroleum natural gas exploration drillng operation, especially relates to a kind of drilling well two-way reaming device of long well section.
Background technology
At present, in industries such as oil and gas exploration, the geological condition that runs in the drilling process is complicated and changeable, when being drilled into easy generation undergauge stratum, if the untimely reaming that carries out will cause tight trip because of hole shrinkage.Existing solution generally is to increase the tooth of protecting the footpath effect to be arranged or protect the footpath piece on bit cone or tooth pawl, improves the finishing borehole wall ability of drill bit, reaches the purpose that guarantees borehole diameter.But when bore meeting bad ground, simple to adopt above-mentioned measure be not enough for the long well section undergauge, but need a kind of not only just the special-purpose reaming device of reaming but also back reaming be used.
Summary of the invention
It is a kind of when undergauge appears in well in drilling process that the purpose of this utility model just is to provide, can with creep into capable long well section just, back reaming, the finishing borehole wall, effectively cutting, destroy keyway a kind of drilling well with the two-way reaming device of long well section.
The purpose of this utility model can realize by following measure:
The utility model comprises left and right end linkage section and middle active section, and left end is an internal thread, and mid portion is an active section, and right-hand member is an external screw thread, and active section is to be combined by outside cylinder helicoid and two ends cydariform helicoid.
The scroll surface of the active section in the utility model is evenly equipped with carbide alloy.The carbide alloy of active section exceeds one to two millimeter of edge surface.Certainly, also can adopt other suitable material and thickness as required.Described left and right end linkage section and middle active section are integrated, and certainly, also can be made into the non-integral structure.
The utility model is because work plane adopts the unique texture of cylinder helical plane and the combination of bilateral symmetry cydariform helicoid, and both reaming just when making the work of this device, but back reaming again also have centralizing function simultaneously.In addition, the two-way reaming device of this long well section is that one processes, and uses safe and reliable.
Description of drawings
Accompanying drawing is a front view of the present utility model;
The specific embodiment
The utility model is done with detailed description below in conjunction with drawings and Examples:
As shown in the figure, the utility model comprises the left and right end linkage section and the middle active section of integral structure, and left end is an internal thread, and mid portion is an active section, and right-hand member is an external screw thread, and active section is to be combined by outside cylinder helicoid and two ends cydariform helicoid.The scroll surface of active section is evenly equipped with carbide alloy.The carbide alloy of active section exceeds one to two millimeter of edge surface.
Operating principle of the present utility model is as follows: the utility model is that one processes, and left end is an internal thread, is connected in the drill string below; Mid portion is an active section, and active section is to be combined the uniform carbide alloy of edge surface by outside cylinder helicoid and two ends cydariform helicoid; Right-hand member is an external screw thread, connects guide shoe and uses separately, perhaps connects drill collar, can with just boring, back reaming.When appearring in well, uses undergauge the two-way reaming device of long well section, the finishing, expansion and the irregular part of the grinding borehole wall that can be used for well, the shoulder that effective destruction may exist, eliminate oval well, remove cutting bed, guarantee that well is smooth-going smooth, keep the normal diameter of well, improve wellbore quality, keep drillng operation smooth.
Claims (4)
1, a kind of drilling well two-way reaming device of long well section, it is characterized in that: it comprises left and right end linkage section and middle active section, and left end is an internal thread, and mid portion is an active section, right-hand member is an external screw thread, and active section is to be combined by outside cylinder helicoid and two ends cydariform helicoid.
2, the drilling well according to claim 1 two-way reaming device of long well section, it is characterized in that: the scroll surface of described active section is evenly equipped with carbide alloy.
3, the drilling well according to claim 1 and 2 two-way reaming device of long well section, it is characterized in that: the carbide alloy of described active section exceeds one to two millimeter of edge surface.
4, the drilling well according to claim 1 and 2 two-way reaming device of long well section is characterized in that: described left and right end linkage section and middle active section are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420011372 CN2739343Y (en) | 2004-07-30 | 2004-07-30 | Long well section two-way hole-drawing device for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420011372 CN2739343Y (en) | 2004-07-30 | 2004-07-30 | Long well section two-way hole-drawing device for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2739343Y true CN2739343Y (en) | 2005-11-09 |
Family
ID=35354409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420011372 Expired - Fee Related CN2739343Y (en) | 2004-07-30 | 2004-07-30 | Long well section two-way hole-drawing device for well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2739343Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691477A (en) * | 2012-06-19 | 2012-09-26 | 东北石油大学 | Rock debris cleaning device for drilling tool |
| CN105422006A (en) * | 2015-12-08 | 2016-03-23 | 西南石油大学 | Adjustable underground rock breaking tool combining drilling and expanding |
| CN108505943A (en) * | 2018-06-04 | 2018-09-07 | 中石化石油工程技术服务有限公司 | A kind of drilling well reaming reaming hole device |
| 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 |
-
2004
- 2004-07-30 CN CN 200420011372 patent/CN2739343Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691477A (en) * | 2012-06-19 | 2012-09-26 | 东北石油大学 | Rock debris cleaning device for drilling tool |
| CN102691477B (en) * | 2012-06-19 | 2014-09-17 | 东北石油大学 | Rock debris cleaning device for drilling tool |
| CN105422006A (en) * | 2015-12-08 | 2016-03-23 | 西南石油大学 | Adjustable underground rock breaking tool combining drilling and expanding |
| 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 |
| CN108505943A (en) * | 2018-06-04 | 2018-09-07 | 中石化石油工程技术服务有限公司 | A kind of drilling well reaming reaming hole device |
| CN108505943B (en) * | 2018-06-04 | 2023-09-08 | 中石化石油工程技术服务有限公司 | Drilling reaming device |
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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 |