CN206000471U - A kind of preventing sticking PDC drill bit - Google Patents
A kind of preventing sticking PDC drill bit Download PDFInfo
- Publication number
- CN206000471U CN206000471U CN201620988125.4U CN201620988125U CN206000471U CN 206000471 U CN206000471 U CN 206000471U CN 201620988125 U CN201620988125 U CN 201620988125U CN 206000471 U CN206000471 U CN 206000471U
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- drill bit
- reaming
- cutting teeth
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- plane
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Abstract
This utility model is related to a kind of preventing sticking PDC drill bit, include bit body, circumferentially spaced on bit body it is provided with wing, it is installed on main cutting tooth before wing bottom and lower section, the top side of wing is gage surface, gauge teeth is installed on gage surface, the upper end of gage surface is provided with intilted inclined-plane and is connected it is characterised in that the intersection on described inclined-plane and gage surface is installed on the back-reaming cutting teeth of 2 or more than 2 with drill bit body phase.This utility model, when drill bit bores and runs into easy undergauge well, is above carried to drill bit by back-reaming cutting teeth effect, can avoid bit freezing；When running into the strong stratum lead bit application of abrasiveness, many back-reaming cutting teeth energy effective protection gage surfaces and inclined-plane, prevent gauge surface wear from leading to back reaming fall tooth to lose efficacy, enhance the reliability of PDC drill bit use.
Description
Technical field
This utility model is related to a kind of preventing sticking PDC drill bit, belongs to oil and geological drilling technical field of tools.
Background technology
The eighties in last century, diamond bit is widely used in oil and gas well drilling engineering.Diamond bit
Mainly it is made up of bit body and cutting element, diamond bit is divided into three classes according to cutting element：PDC（Polycrystalline diamond）Bore
Head, TSP（TSP）Drill bit and natural diamond bit.PDC drill bit be mainly used in soft to medium ground drilling,
Through continuous technological progress, the scope of application of PDC drill bit is more and more wider, has preferable economic worth.TSP drill bit is mainly used
In in hard to extremely hard formation drilling.At present, oil and gas well drilling engineering middle-deep well operation progressively increases, and bores the stratum met and also gets over
Come more complicated.
In actual drilling process, PDC drill bit bores chance cream rock or mudstone stratum, well easily undergauge sometimes, bores for PDC
Lift brill on head is follow-up and be commonly encountered bit freezing problem.Another kind of situation, in the strong stratum directional drilling of abrasiveness, conventional PDC bores
Head is commonly encountered the abrasion of bit gauge protection inclined-plane and leads to drill bit to lose efficacy.
Content of the invention
Technical problem to be solved in the utility model is to prevent for not enough offer one kind that above-mentioned prior art exists
Bit freezing PDC drill bit, is blocked with solving the problems, such as that conventional PDC drill bit above puies forward chance when boring and meeting cream rock or mudstone stratum hole shrinkage.
This utility model by solving the problems, such as adopted technical scheme set forth above is：Include bit body, bit body
Upper circumferentially spaced be provided with wing, be installed on main cutting tooth wing bottom and lower section before, the top side of wing is guarantor
Diametric plane, gage surface is installed on gauge teeth, the upper end of gage surface is provided with intilted inclined-plane and is connected with drill bit body phase, its
It is characterised by that the intersection on described inclined-plane and gage surface is installed on the back-reaming cutting teeth of 2 or more than 2.
By such scheme, described back-reaming cutting teeth is installed in before inclined-plane and gage surface intersection.
By such scheme, the profile of tooth of described back-reaming cutting teeth is conical tooth or button.
By such scheme, described back-reaming cutting teeth is diamond compact.
By such scheme, each wing is respectively provided with back-reaming cutting teeth.
By such scheme, the amount of extending radially out of described back-reaming cutting teeth is from top to bottom（Vertically）In incremental shape.
The beneficial effects of the utility model are：1st, when drill bit bores and runs into easy undergauge well, by back-reaming cutting teeth
Effect above carries to drill bit, can avoid bit freezing；2nd, when running into the strong stratum lead bit application of abrasiveness, many back reamings cuttings
Tooth energy effective protection gage surface and inclined-plane, prevent gauge surface wear from leading to back reaming fall tooth to lose efficacy, enhance PDC drill bit use
Reliability.
Brief description
Fig. 1 is the three-dimensional structure diagram of one embodiment of this utility model.
Specific embodiment
Below in conjunction with accompanying drawing, this utility model is further described and illustrates.
Include bit body 1, circumferentially spaced on bit body be provided with wing 3, install before wing bottom and lower section
There is main cutting tooth 5, on bit body, corresponding main cutting tooth is provided with nozzle 4, the top side of wing（Drills outer circumference face）For gauge
Face 2, gage surface is installed on gauge teeth, the upper end of gage surface is provided with intilted inclined-plane and is connected with drill bit body phase,
It is installed on 2 back-reaming cutting teeths 6, before wherein one is installed in nearly gage surface before described inclined-plane and gage surface intersection
Face, another is installed in before inclined-plane, and the profile of tooth of described back-reaming cutting teeth is conical tooth or button, is diamond
Composite sheet, and the amount of extending radially out of back-reaming cutting teeth is in be incremented by shape from top to bottom, i.e. the back-reaming cutting teeth footpath on nearly inclined-plane
Less to overhang, the back-reaming cutting teeth amount of extending radially out of nearly gage surface is larger.
Claims (6)
1. a kind of preventing sticking PDC drill bit, includes bit body, circumferentially spaced on bit body be provided with wing, wing bottom and
It is installed on main cutting tooth, the top side of wing is gage surface, gage surface is installed on gauge teeth, in gage surface before lower section
Upper end be provided with intilted inclined-plane and be connected the intersection it is characterised in that on described inclined-plane and gage surface with drill bit body phase
It is installed on the back-reaming cutting teeth of 2 or more than 2.
2. the preventing sticking PDC drill bit as described in claim 1 it is characterised in that described back-reaming cutting teeth be installed in inclined-plane with
Before gage surface intersection.
3. the preventing sticking PDC drill bit as described in claim 1 or 2 is it is characterised in that the profile of tooth of described back-reaming cutting teeth is
Conical tooth or button.
4. the preventing sticking PDC drill bit as described in claim 1 or 2 is it is characterised in that described back-reaming cutting teeth is diamond
Composite sheet.
5. the preventing sticking PDC drill bit as described in claim 1 or 2 is cut it is characterised in that being respectively provided with back reaming on each wing
Cut tooth.
6. the preventing sticking PDC drill bit as described in claim 1 or 2 is it is characterised in that the radial direction of described back-reaming cutting teeth is stretched
Output is in be incremented by shape from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620988125.4U CN206000471U (en) | 2016-08-31 | 2016-08-31 | A kind of preventing sticking PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620988125.4U CN206000471U (en) | 2016-08-31 | 2016-08-31 | A kind of preventing sticking PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206000471U true CN206000471U (en) | 2017-03-08 |
Family
ID=58196213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620988125.4U Active CN206000471U (en) | 2016-08-31 | 2016-08-31 | A kind of preventing sticking PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206000471U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869800A (en) * | 2017-03-15 | 2017-06-20 | 金陵科技学院 | A kind of anti-burying drill bit of ground |
| CN108625790A (en) * | 2018-07-06 | 2018-10-09 | 立府精密机械有限公司 | A kind of high-strength abrasion-proof drill bit |
| CN109869095A (en) * | 2017-12-01 | 2019-06-11 | 中石化石油工程技术服务有限公司 | Actively anti-oblique drill bit |
| CN112513404A (en) * | 2017-09-29 | 2021-03-16 | 贝克休斯控股有限责任公司 | Earth-boring tool with gage zones configured to reduce bit walk and method of drilling |
-
2016
- 2016-08-31 CN CN201620988125.4U patent/CN206000471U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869800A (en) * | 2017-03-15 | 2017-06-20 | 金陵科技学院 | A kind of anti-burying drill bit of ground |
| CN112513404A (en) * | 2017-09-29 | 2021-03-16 | 贝克休斯控股有限责任公司 | Earth-boring tool with gage zones configured to reduce bit walk and method of drilling |
| CN112513404B (en) * | 2017-09-29 | 2023-12-19 | 贝克休斯控股有限责任公司 | Earth-boring tool having gage region configured to reduce bit walk and method of boring thereof |
| CN109869095A (en) * | 2017-12-01 | 2019-06-11 | 中石化石油工程技术服务有限公司 | Actively anti-oblique drill bit |
| CN108625790A (en) * | 2018-07-06 | 2018-10-09 | 立府精密机械有限公司 | A kind of high-strength abrasion-proof drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180314 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Kingdream Sinopec Petroleum Machinery Co. Ltd. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Sinopec petroleum machinery Limited by Share Ltd Kingdream branch |