CN105443043A - PDC drill bit capable of changing blade number - Google Patents
PDC drill bit capable of changing blade number Download PDFInfo
- Publication number
- CN105443043A CN105443043A CN201410501705.1A CN201410501705A CN105443043A CN 105443043 A CN105443043 A CN 105443043A CN 201410501705 A CN201410501705 A CN 201410501705A CN 105443043 A CN105443043 A CN 105443043A
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- wing
- drill bit
- drilling
- blades
- pdc drill
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Abstract
The invention relates to a PDC drill bit capable of changing the blade number. The PDC drill bit mainly comprises a matrix, a hydraulic channel, a nozzle, stationary blades, movable blades, a clamping spring, a T-shaped clamping block, a T-shaped slot, and a limiting anti-releasing block. The stationary blades are fixed on the matrix and integrated with the matrix. The movable blades are limited in the T-shaped slot on the matrix through the T-shaped block. The limiting anti-releasing block is arranged at the lower part of the slot, and the clamping spring is arranged at the upper part. The drill bit is subjected to different drilling pressures due to different frictional resistances in different drilling modes. The drill bit is subjected to the little drilling pressure during the slidingly drilling-in, the movable blades shrink a little along with the clamping spring, and the number of the blades entering ground is large. The drill bit is subjected to the large drilling pressure during the composite drilling-in, the movable blades shrink a lot along with the clamping spring, and the number of the PDC drill bit entering the ground is small. There are many blades during the slidingly drilling-in by changing the number of the blades in different drilling modes, and the tool surface stabilization is ensured. There are less blades during the composite drilling-in, and the higher penetration rate is ensured.
Description
Technical field
The present invention relates to bit tool field, specifically a kind of PDC drill bit changing wing quantity, is specially adapted to the drillng operation such as directional well, horizontal well.
Background technology
When directional well, horizontal well etc. need guide digging, adopt PDC drill bit guide digging, have that rate of penetration is high, long service life, safety advantages of higher, but when also there is slipping drilling, tool-face is unstable, easily suppresses pump, the shortcomings such as build angle rate is on the low side.Can find out according to the real brill experience of a large amount of PDC drill bit, whether rate of penetration speed, tool-face be stable has much relations with the wing quantity of PDC drill bit, wing is the easy wedging stratum of drill bit at least, and compound drilling rate of penetration is high, but during slipping drilling tool-face unstable, easily suppress pump, build angle rate is low; Wing at most drill bit is difficult to wedging stratum, and compound drilling rate of penetration is on the low side, but slipping drilling tool-face stable, not easily suppress pump, build angle rate is high.Guide digging process is the process that a slipping drilling and compound drilling replace, the PDC of current use is all fixing wing quantity, the timing of PDC wing quantity one, existing higher rate of penetration when simultaneously cannot meet compound drilling, tool-face can stablize, have the requirement of higher build angle rate again during slipping drilling.
Summary of the invention
The object of the invention is the problems referred to above existed for existing fixed-wing drill bit, proposing a kind of by changing different quantity of creeping into wing under mode, having when slipping drilling more wing to cut stratum, ensureing that tool-face is stablized, have higher build angle rate; There is less wing to cut stratum during compound drilling, ensure the PDC drill bit of the changed wing quantity of higher rate of penetration.
Technical scheme of the present invention is:
Change a PDC drill bit for wing quantity, comprise carcass 1, water passage 2, fixing wing 3 and nozzle 4, it is characterized in that: the carcass 1 between fixing wing is also provided with movable wing 9.
Such scheme comprises further:
Movable wing 9 there is T-shaped fixture block 6, carcass 1 corresponding with it there is T-shaped draw-in groove 7, movable wing 9 forms axial insertion by T-shaped fixture block 6 and the T-shaped draw-in groove 7 on carcass 1 and coordinates, T-shaped draw-in groove 7 bottom is provided with spacing anti-drop block 8, T-shaped draw-in groove 7 top is provided with jump ring 4, spacing anti-drop block 8 acts on movable wing 9T shape fixture block 6 bottom, and forms spacing and stop cooperation, and jump ring 4 acts between movable wing 9 top and carcass 1.
With the same length of fixing wing 3 when spacing anti-drop block 8 restriction activity wing 9 extends the longest under the elastic force effect of jump ring 4.
Fixing wing 3 is disposed alternately on carcass 1 with movable wing 9.
Adopt PDC drill bit of the present invention, under difference creeps into mode, due to the not equal reason of frictional resistance, drill bit bears the pressure of the drill difference, during slipping drilling, to bear the pressure of the drill little for drill bit, and the pressure that movable wing bears is less, and jump ring distortion is little, movable wing shrinks few in company with jump ring, PDC drill bit wedging stratum wing quantity is many; During compound drilling, drill bit bears the pressure of the drill greatly, and the pressure that movable wing bears is comparatively large, and jump ring distortion is large, and movable wing is many in company with jump ring contraction, and PDC drill bit wedging stratum wing quantity is few.Creeping into wing working quantity under mode by changing difference, meeting and having more wing when slipping drilling, ensure that tool-face is stablized, have higher build angle rate; There is less wing work during compound drilling, ensure higher rate of penetration.And its structure is simple, and easy to use, safety is high, and applicability is strong.Be specially adapted to the guide digging such as directional well, horizontal well operation actual needs.
Accompanying drawing illustrates:
Fig. 1 is a kind of structural representation changing the PDC drill bit embodiment of wing quantity;
Fig. 2 is the upward view of Fig. 1, namely fixes wing and movable wing distribution map;
Fig. 3 is T-shaped notch schematic diagram on carcass in Fig. 1.
In figure: 1. carcass, 2. water passage, 3. fixing wing, 4. nozzle, 5. jump ring, 6.T shape fixture block, 7.T shape draw-in groove, 8. spacing anti-drop block, 9. movable wing.
Detailed description of the invention
Below by an exemplary embodiments, the present invention will be further described.
With reference to Fig. 1, Fig. 2 and Fig. 3, the PDC drill bit that can change wing quantity is made up of carcass 1, water passage 2, fixing wing 3, nozzle 4, jump ring 5, T-shaped fixture block 6, T-shaped draw-in groove 7, spacing anti-drop block 8, movable wing 9.Water passage 2 runs through carcass 1 inside and goes out carcass 1 place joins multiple nozzle 4, fixing wing 3, the size of movable wing 9 most external composition reaches bit diameter size, fixing wing 3 is fixed on carcass 1 and is connected with carcass 1, movable wing 9 there is T-shaped fixture block 6, carcass 1 corresponding with it there is T-shaped draw-in groove 7, T-shaped draw-in groove 7 bottom limited location anti-drop block 8, jump ring 5 is arranged at T-shaped draw-in groove 7 top, movable wing 9 is limited in the T-shaped draw-in groove 7 on carcass 1 by T-shaped fixture block 6, movable wing 9 stretches along with the flexible of jump ring 5, with the same length of fixing wing 3 when spacing anti-drop block 8 makes movable wing 9 extend the longest under the elastic force effect of jump ring 5, spacing anti-drop block 8 prevents movable wing 9 from coming off simultaneously.
Under difference creeps into mode, due to the not equal reason of frictional resistance, drill bit bears the pressure of the drill difference, during slipping drilling, to bear the pressure of the drill little for drill bit, and the pressure that movable wing 9 bears is less, and jump ring 5 is out of shape little, movable wing 9 shrinks few in company with jump ring 5, PDC drill bit wedging stratum wing quantity is many; During compound drilling, drill bit bears the pressure of the drill greatly, and the pressure that movable wing 9 bears is comparatively large, and jump ring 5 is out of shape greatly, and movable wing 9 shrinks many in company with jump ring 5, and PDC drill bit wedging stratum wing quantity is few.Creeping into wing quantity under mode by changing difference, having more wing when slipping drilling, ensure that tool-face is stablized, have higher build angle rate; There is less wing during compound drilling, ensure higher rate of penetration.
Claims (4)
1. can change a PDC drill bit for wing quantity, comprise carcass (1), water passage (2), fixing wing (3) and nozzle (4), it is characterized in that: the carcass (1) between fixing wing is also provided with movable wing (9).
2. the PDC drill bit changing wing quantity according to claim 1, it is characterized in that: movable wing (9) has T-shaped fixture block (6), carcass (1) corresponding with it there is T-shaped draw-in groove (7), movable wing (9) forms axial insertion by T-shaped fixture block (6) and the T-shaped draw-in groove (7) on carcass (1) and coordinates, T-shaped draw-in groove (7) bottom is provided with spacing anti-drop block (8), T-shaped draw-in groove (7) top is provided with jump ring (4), spacing anti-drop block (8) acts on movable wing (9) T-shaped fixture block (6) bottom, and form spacing and stop cooperation, jump ring (4) acts between movable wing (9) top and carcass (1).
3. the PDC drill bit changing wing quantity according to claim 2, is characterized in that: with fixing wing (3) the same length when spacing anti-drop block (8) restriction activity wing (9) extends the longest under the elastic force effect of jump ring (4).
4. the PDC drill bit of the changed wing quantity according to claim 1,2 or 3, is characterized in that: fixing wing (3) is disposed alternately on carcass (1) with movable wing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501705.1A CN105443043A (en) | 2014-09-27 | 2014-09-27 | PDC drill bit capable of changing blade number |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501705.1A CN105443043A (en) | 2014-09-27 | 2014-09-27 | PDC drill bit capable of changing blade number |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443043A true CN105443043A (en) | 2016-03-30 |
Family
ID=55553624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410501705.1A Pending CN105443043A (en) | 2014-09-27 | 2014-09-27 | PDC drill bit capable of changing blade number |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443043A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019173A (en) * | 2016-09-30 | 2018-05-11 | 施蓝姆伯格技术公司 | Downhole milling, which is cut, cuts structure |
| CN111764831A (en) * | 2020-06-28 | 2020-10-13 | 中煤科工集团西安研究院有限公司 | PDC drill bit for coal mine high-position directional drilling |
| CN114704208A (en) * | 2022-06-06 | 2022-07-05 | 胜利油田万和石油工程技术有限责任公司 | Drill bit assembly with adjustable tooth crest angle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201401131Y (en) * | 2009-04-28 | 2010-02-10 | 成都迪普金刚石钻头有限责任公司 | PDC drill bit equipped with longitudinal cutting teeth |
| CN202300207U (en) * | 2011-10-12 | 2012-07-04 | 成都惠灵丰金刚石钻头有限公司 | Novel replaceable cutter wing reamer |
| CN202689951U (en) * | 2012-07-14 | 2013-01-23 | 李和永 | Detachable geological drill bit |
| CN103899253A (en) * | 2012-12-28 | 2014-07-02 | 中国石油化工股份有限公司 | Drill bit with telescopic blades |
| CN203756049U (en) * | 2014-04-02 | 2014-08-06 | 胜利油田盛辉石油技术开发有限责任公司 | Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade |
| CN203835278U (en) * | 2014-05-16 | 2014-09-17 | 河北锐石钻头制造有限公司 | Splicing structure for PDC drill bit |
-
2014
- 2014-09-27 CN CN201410501705.1A patent/CN105443043A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201401131Y (en) * | 2009-04-28 | 2010-02-10 | 成都迪普金刚石钻头有限责任公司 | PDC drill bit equipped with longitudinal cutting teeth |
| CN202300207U (en) * | 2011-10-12 | 2012-07-04 | 成都惠灵丰金刚石钻头有限公司 | Novel replaceable cutter wing reamer |
| CN202689951U (en) * | 2012-07-14 | 2013-01-23 | 李和永 | Detachable geological drill bit |
| CN103899253A (en) * | 2012-12-28 | 2014-07-02 | 中国石油化工股份有限公司 | Drill bit with telescopic blades |
| CN203756049U (en) * | 2014-04-02 | 2014-08-06 | 胜利油田盛辉石油技术开发有限责任公司 | Petroleum drilling polycrystalline diamond compact (PDC) bit with movable auxiliary blade |
| CN203835278U (en) * | 2014-05-16 | 2014-09-17 | 河北锐石钻头制造有限公司 | Splicing structure for PDC drill bit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019173A (en) * | 2016-09-30 | 2018-05-11 | 施蓝姆伯格技术公司 | Downhole milling, which is cut, cuts structure |
| CN111764831A (en) * | 2020-06-28 | 2020-10-13 | 中煤科工集团西安研究院有限公司 | PDC drill bit for coal mine high-position directional drilling |
| CN114704208A (en) * | 2022-06-06 | 2022-07-05 | 胜利油田万和石油工程技术有限责任公司 | Drill bit assembly with adjustable tooth crest angle |
| CN114704208B (en) * | 2022-06-06 | 2022-08-09 | 胜利油田万和石油工程技术有限责任公司 | Drill bit assembly with adjustable tooth crest angle |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |