CN105672889A - Anti-collision drill bit for sleeve tube - Google Patents
Anti-collision drill bit for sleeve tube Download PDFInfo
- Publication number
- CN105672889A CN105672889A CN201410667775.4A CN201410667775A CN105672889A CN 105672889 A CN105672889 A CN 105672889A CN 201410667775 A CN201410667775 A CN 201410667775A CN 105672889 A CN105672889 A CN 105672889A
- Authority
- CN
- China
- Prior art keywords
- tooth
- drill bit
- diameter
- sleeve tube
- footpath
- 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
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to drill bits for petroleum and geology, in particular to an anti-collision drill bit for a sleeve tube. The anti-collision drill bit for the sleeve tube is mainly composed of a drill bit body, a nozzle, a blade and cutting teeth. Based on a PCD drill bit, a diameter-incoming tooth and a diameter-protecting tooth are additionally arranged on the outer side surface of the blade and combined for matching. The large caster angle is arranged on the diameter-incoming tooth. The anti-collision drill bit for the sleeve tube has following beneficial effects: when the PDC drill bit is used for drilling plugs, lateral cutting capability is undermined due to the large caster angle of the diameter-incoming tooth or adoption of an impregnated diamond segment. The diameter-protecting tooth puts a limit on lateral penetration depth of the diameter-incoming tooth and protects a cutting tooth. The sleeve tube is also effectively precluded from being damaged to the PDC drill bit. In addition, tripping time is saved and the drilling period is shortened. The sleeve tube effectively precluded from being damaged to the PDC drill bit.
Description
Technical field
The present invention relates to oil and geological drill bit, specifically sleeve pipe anti-collision drill bit.
Background technology
At present in oil and geological drilling process, bore plug main based on rifler. But need sometimes for speed-raising, it is to avoid rifler pulls out of hole after boring plug and changes the time that PDC drill bit increases by one time and bores, and extends drilling period. On-the-spot commonly used PDC drill bit continues to creep into after boring plug. Existing PDC drill bit is mainly made up of bit body, nozzle, wing and cutting tooth, can cause the damage of the cutting tooth of PDC drill bit lateral part, it is often more important that the cutting tooth of PDC can be cut to sleeve pipe and cause casing failure, hides some dangers for for follow-up construction when boring plug.
Summary of the invention
The purpose of the present invention is precisely in order to for the PDC drill bit that solves to use PDC drill bit to occur when boring plug to the damage of footpath tooth; that the more important thing is PDC can be cut to, to footpath tooth, the problem that sleeve pipe causes casing failure, it is provided that a kind of can effectively protection when using PDC drill bit to bore plug is cut tooth and will not damage the sleeve pipe anti-collision drill bit of sleeve pipe.
On the PDC drill bit basis that the sleeve pipe anti-collision drill bit of the present invention is mainly made up of bit body, nozzle, wing and cutting tooth, wing lateral surface is added to footpath tooth and gauge teeth, wherein arrives footpath tooth and to footpath tooth holder combination collocation.
Such scheme farther includes:
Identical with arriving footpath tooth holder proud exposure to footpath tooth. Can be composite polycrystal-diamond or impregnated diamond segment etc. to footpath tooth.
Arranging bigger back rake angle to footpath tooth and gauge teeth, back rake angle angle is between 20-70 degree.
Include the one or more combination of hemi-spherical ended shape insert, oval tooth or flat tooth to footpath tooth holder, the cross section of flat tooth is polygon, circular or irregular shape.
The invention has the beneficial effects as follows: when using PDC drill bit to bore plug owing to arranging bigger back rake angle to footpath tooth or adopting impregnated diamond segment etc. to reduce its lateral cutting ability; more effective can prevent PDC drill bit from damaging sleeve pipe limit the lateral depth of tooth penetration protection cutting tooth of footpath tooth to footpath tooth holder while, it is to avoid casing damage is saved a trip time simultaneously and shortened drilling period.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram of an embodiment of the present invention.
In figure: bit body 1, nozzle 2, wing 3, cutting tooth 4, to footpath tooth 5, to footpath tooth holder 6 and gauge teeth 7.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As it is shown in figure 1, the present invention mainly by bit body 1, nozzle 2, wing 3, cutting tooth 4, to footpath tooth 5, form to footpath tooth holder 6 and gauge teeth 7. Cutting tooth 4 is installed on wing 3. Can being composite polycrystal-diamond or impregnated diamond segment etc. to footpath tooth 5, its shape can be hemi-spherical ended shape insert or chisel teeth. It is arranged on rear side of footpath tooth 5 to footpath tooth holder 6, contour with to footpath tooth 5. Can being hemi-spherical ended shape insert ellipse tooth or flat tooth to footpath tooth holder 6, the cross section of flat tooth can be the circular or irregular shape of polygon.
Being respectively provided with bigger back rake angle to footpath tooth 5 and gauge teeth 7, back rake angle angle is between 20-70 degree. Equal with to footpath tooth 5 proud exposure to footpath tooth holder 6.
Operation principle:
Reduce its lateral cutting ability when using the present invention to bore plug owing to arranging bigger back rake angle to footpath tooth 5, be restricted to the lateral depth of tooth penetration of footpath tooth 5 to footpath tooth holder 6 and can effectively prevent PDC drill bit from damaging sleeve pipe.
Claims (4)
1. sleeve pipe anti-collision drill bit, including bit body (1), nozzle (2), wing (3) and cutting tooth (4), it is characterised in that: on wing (3) lateral surface, it is additionally provided with footpath tooth (5), to footpath tooth holder (6) and gauge teeth (7).
2. sleeve pipe anti-collision drill bit as claimed in claim 1, it is characterised in that: identical with arriving footpath tooth holder (6) proud exposure to footpath tooth (5).
3. sleeve pipe anti-collision drill bit as claimed in claim 1 or 2, it is characterised in that: arranging bigger back rake angle to footpath tooth (5) and gauge teeth (7), back rake angle angle is between 20-70 degree.
4. sleeve pipe anti-collision drill bit as claimed in claim 3, it is characterised in that: tooth holder (6) includes the one or more combination of hemi-spherical ended shape insert, oval tooth or flat tooth, and the cross section of flat tooth is polygon, circular or irregular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667775.4A CN105672889A (en) | 2014-11-21 | 2014-11-21 | Anti-collision drill bit for sleeve tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667775.4A CN105672889A (en) | 2014-11-21 | 2014-11-21 | Anti-collision drill bit for sleeve tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105672889A true CN105672889A (en) | 2016-06-15 |
Family
ID=56957265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410667775.4A Pending CN105672889A (en) | 2014-11-21 | 2014-11-21 | Anti-collision drill bit for sleeve tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105672889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323592A (en) * | 2021-08-04 | 2021-08-31 | 四川川庆石油钻采科技有限公司 | PDC drill bit capable of realizing casing drilling and design method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5558170A (en) * | 1992-12-23 | 1996-09-24 | Baroid Technology, Inc. | Method and apparatus for improving drill bit stability |
| CN201705211U (en) * | 2009-12-25 | 2011-01-12 | 上海中曼金刚石钻头有限公司 | Novel PDC drill bit |
| CN202401970U (en) * | 2011-11-01 | 2012-08-29 | 上海中盟石油天然气有限公司 | PDC (polycrystalline diamond composite) drill bit with function of uplift resistance breaking |
| US20130292186A1 (en) * | 2012-05-03 | 2013-11-07 | Smith International, Inc. | Gage cutter protection for drilling bits |
| CN204326972U (en) * | 2014-11-21 | 2015-05-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | Sleeve pipe anti-collision drill bit |
-
2014
- 2014-11-21 CN CN201410667775.4A patent/CN105672889A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5558170A (en) * | 1992-12-23 | 1996-09-24 | Baroid Technology, Inc. | Method and apparatus for improving drill bit stability |
| CN201705211U (en) * | 2009-12-25 | 2011-01-12 | 上海中曼金刚石钻头有限公司 | Novel PDC drill bit |
| CN202401970U (en) * | 2011-11-01 | 2012-08-29 | 上海中盟石油天然气有限公司 | PDC (polycrystalline diamond composite) drill bit with function of uplift resistance breaking |
| US20130292186A1 (en) * | 2012-05-03 | 2013-11-07 | Smith International, Inc. | Gage cutter protection for drilling bits |
| CN204326972U (en) * | 2014-11-21 | 2015-05-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | Sleeve pipe anti-collision drill bit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323592A (en) * | 2021-08-04 | 2021-08-31 | 四川川庆石油钻采科技有限公司 | PDC drill bit capable of realizing casing drilling and design method thereof |
| CN113323592B (en) * | 2021-08-04 | 2021-10-08 | 四川川庆石油钻采科技有限公司 | PDC drill bit capable of realizing casing drilling and design method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2009125622A (en) | Vane rotary chisel for pilot drilling with a cutting element and a method of preliminary crushing of underground rocks using it | |
| GB2556765A8 (en) | Removing a casing section in a wellbore | |
| EA201391153A1 (en) | ARMAMENT FOR BORING BITS WITH FIXED CUTTERS AND OTHER WELL-BREEDING-DESTRUCTING TOOLS | |
| AR101874A1 (en) | PERFORATION OF SHORT COATING PIPING USING RECOVERY DIRECTIONAL WELL FUND ASSEMBLY | |
| SA520411652B1 (en) | Earth-boring tools having a gauge insert configured for reduced bit walk and method of drilling with same | |
| WO2012143153A3 (en) | Cutting bit and bit holder | |
| WO2012171643A3 (en) | Two-centre rotary boring bit and method for deepening an existing well | |
| GB2572080A (en) | Debris bridge monitoring and removal for uphole milling system | |
| GB2564342A (en) | Drill bits, rotatable cutting structures, cutting structures having adjustable rotational resistance, and related methods | |
| MY161015A (en) | Downhole cutting tool having center beveled mill blade | |
| GB2537266A (en) | Cutting structure design with secondary cutter methodology | |
| WO2014111690A3 (en) | Drill bit | |
| CN105672889A (en) | Anti-collision drill bit for sleeve tube | |
| CN204326972U (en) | Sleeve pipe anti-collision drill bit | |
| SA520420329B1 (en) | Earth boring tools with pockets having cutting elements disposed therein trailing rotationally leading faces of blades and related methods | |
| GB2549051A (en) | Anti-balling drill bit and method of making same | |
| CN202788630U (en) | Polycrystalline diamond compact (PDC) drill bit with sharp teeth | |
| MX2022006354A (en) | Drill bit for boring earth and other hard materials. | |
| PH12016502426A1 (en) | Downhole tool | |
| MX2016015094A (en) | Earth boring systems and methods with integral debris removal. | |
| CL2016002568A1 (en) | A core sample drill bit with a longitudinal axis, comprising a pin and an annular crown with a cutting face, where the annular crown and the pin define an internal space to receive a core sample, and where the annular crown defines a single notch and a plurality of wells | |
| GB2531477A (en) | Mechanically locking polycrystalline diamond element and industrial device | |
| CN107355183A (en) | The geological drilling hollow boring bit suitably used in earth's surface broken ground | |
| RU2017143054A (en) | METHOD OF IMPROVING PROTECTIONS FROM CUTTING BITTING PILES | |
| CN210888811U (en) | Coring bit for slipping stratum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |
|
| WD01 | Invention patent application deemed withdrawn after publication |