CN110029933A - Based on turbo-driven double speed PDC drill bit - Google Patents
Based on turbo-driven double speed PDC drill bit Download PDFInfo
- Publication number
- CN110029933A CN110029933A CN201910329285.6A CN201910329285A CN110029933A CN 110029933 A CN110029933 A CN 110029933A CN 201910329285 A CN201910329285 A CN 201910329285A CN 110029933 A CN110029933 A CN 110029933A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- turbine
- big
- extension
- locating piece
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
- E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
Abstract
The invention discloses one kind to be based on turbo-driven double speed PDC drill bit, including top connection, the upper and lower locating piece of turbine wheel shaft, large and small steel ball, turbo blade, the big drill bit of extension, turbine wheel shaft, flow guiding connector, y-shaped ring, the big bit nozzle of extension, the small drill bit in center；Assemble sequence is that turbine wheel shaft is first loaded onto turbo blade and flow guiding connector, forms global facility；Locating piece under the big bit nozzle of extension, y-shaped ring, the turbine equipped with small steel ball is packed into the big drill bit of extension, above-mentioned global facility is packed into the big drill bit of extension；By the small drill bit assembly in center on flow guiding connector；Finally successively load onto big steel ball, locating piece, top connection on turbine.The present invention drives the big drill bit inner turbine of extension by drilling fluid, and then drives the small drill bit in center, has the characteristics that the small drill bit in center is crept at different rates with the big drill bit of extension.
Description
Technical field
The invention belongs to oil and natural gas to exploit field, and in particular to one kind is based on turbo-driven double speed PDC drill bit
Design.
Background technique
With deepening continuously for Oil And Gas Exploration And Development, deep-well, ultradeep well and Novel oil gas resource well are more and more,
Bore a possibility that meeting " three high stratum " (formation hardness is high, rock drillability is high, rock abrasiveness is high) increasing, tradition
For PDC drill bit during well drilling and rock crushing, low center portion efficiency of breaking rock is a key factor for restricting rate of penetration.Center portion broken rock effect
The main reason for rate is low is that rock break-off process wellbore center portion cutting tooth movement velocity is low, causes drilling process drill bit center portion by rock
"top" is lived, and rock practical broken form in wellbore center is to break disconnected, rather than the impact grinding of rock bit or PDC drill bit are cut
Cut broken rock.This has seriously affected the rate of penetration and cost of exploration & development of deep hard formation.Rate of penetration and service life are weighing apparatuses
Two important indicators of bit performance are measured, the critical issue that rate of penetration is always drilling engineering is improved.Guaranteeing certain use
Under the premise of service life, improving rate of penetration reduces producing cost with weight for increasing drill bit total footage, reducing the number that makes a trip
Want meaning.It is of the invention based on turbo-driven double speed PDC for the low problem of rate of penetration in the hard formation drilling process of deep
Drill bit can first be crushed the rock at center using the small drill bit in turbine drives center, while fast using the drill string driving big drill bit of extension
Speed drilling, it is effective to improve drillng operation efficiency.
Summary of the invention
In the drilling process mentioned the purpose of the present invention is to solve background technique, traditional PDC drill bit center portion is by rock
"top" is lived, and the problem that rate of penetration is low is caused, and is proposed a kind of based on turbo-driven double speed PDC drill bit.
The technical scheme is that it is based on turbo-driven double speed PDC drill bit, and by top connection, locating piece on turbine wheel shaft,
Big steel ball, turbo blade, the big drill bit of extension, turbine wheel shaft, small steel ball, locating piece under turbine wheel shaft, flow guiding connector, y-shaped ring, outside
Prolong big bit nozzle, the small drill bit composition in center, it is characterized in that: assemble sequence is first to assemble turbo blade on turbine wheel shaft,
Turbine wheel shaft lower end is connected through a screw thread flow guiding connector, forms global facility；The big bit nozzle of extension is loaded onto the big drill bit of extension,
Y-shaped ring is loaded onto extension wammel head groove, locating piece under turbine is packed into the big drill bit of extension, the locating piece under turbine
Groove is packed into small steel ball, and above-mentioned global facility is packed into the big drill bit of extension；It is connected through a screw thread in the other end of flow guiding connector
The small drill bit in center；It is packed into big steel ball in turbine wheel shaft upper end, locating piece on turbine is reloaded into, is connected through a screw thread top connection, assemble
It completes.
In above scheme based on turbo-driven double speed PDC drill bit, it is characterised in that: be provided on flow guiding connector it is circumferential
Three inclined holes of cloth, drilling fluid enter flow guiding connector by inclined hole from the annular space between the big drill bit of extension and flow guiding connector, thus
Into the small drill bit in center, when drilling, sprays from center bradawl head nozzle, and inclined hole advantageously reduces the pressure drop of drilling fluid.
In above scheme based on turbo-driven double speed PDC drill bit, it is characterised in that: locating piece and turbine wheel shaft under turbine
It is upper fluted, small steel ball is packed between the two groove；When drilling, turbine wheel shaft drives the small bit broken rock in center, reduces turbine
Lower frictional resistance between locating piece and turbine wheel shaft.
In above scheme based on turbo-driven double speed PDC drill bit, it is characterised in that: it is fixed on turbine wheel shaft upper end and turbine
There is pit on the block of position, big steel ball is loaded between the two pit；When drilling, turbine wheel shaft drives the small bit broken rock in center, drop
Frictional resistance on low turbine between locating piece and turbine wheel shaft.
In above scheme based on turbo-driven double speed PDC drill bit, it is characterised in that: the big drill bit of extension and flow guiding connector
Between design there are two y-shaped ring, the opening directions of two y-shaped rings is on the contrary, above upward, below downward；It can
It flows out or flows between the big drill bit of extension and flow guiding connector to avoid drilling fluid.
In above scheme based on turbo-driven double speed PDC drill bit, it is characterised in that: on turbine under locating piece, turbine
Locating piece is provided with flow channels；Drilling fluid can push turbo blade by locating piece on turbine, and then drive turbine wheel shaft rotation；
Later, drilling fluid can be by locating piece under turbine, and a part is ejected from the big bit nozzle of extension, and another part is by leading
Stream connector enters the small drill bit in center, ejects from nozzle.
The beneficial effects of the present invention are: (1) this be based on turbo-driven double speed PDC drill bit structure it is compact to design rationally；(2)
The function of the small drill bit in center and the big drill bit double speed drilling of extension may be implemented；(3) it can effectively improve rate of penetration, improve drilling well
Operating efficiency.
Detailed description of the invention
Fig. 1 show that the present invention is based on the structural schematic diagrams of turbo-driven double speed PDC drill bit.
Fig. 2 show the assembled inside component diagram in Fig. 1 of the present invention.
Fig. 3 show the three-dimensional model diagram of Fig. 1 of the present invention.
Fig. 4 show locating piece three-dimensional figure under the turbine wheel shaft in Fig. 1 of the present invention.
Description of symbols: 1. top connections, locating piece on 2. turbine wheel shafts, 3. big steel balls, 4. turbo blades, 5. extension wammels
Head, 6. turbine wheel shafts, 7. small steel balls, locating piece under 8. turbine wheel shafts, 9. flow guiding connectors, 10.Y shape sealing ring, the big drill bit spray of 11. extensions
Mouth, the small drill bit in 12. centers.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
Shown in reference to the accompanying drawings, it is based on turbo-driven double speed PDC drill bit, by top connection (1), locating piece (2) on turbine, greatly
Steel ball (3), turbo blade (4), the big drill bit of extension (5), turbine wheel shaft (6), small steel ball (7), locating piece (8) under turbine, water conservancy diversion connects
Head (9), sealing ring (10), the big bit nozzle of extension (11), the small drill bit in center (12) composition, it is characterized in that: assemble sequence is first
Turbo blade (4) is assemblied on turbine wheel shaft (6), is connected through a screw thread upper flow guiding connector (9) in turbine wheel shaft (6) lower end, is formed
Global facility；Locating piece under turbine (8) are packed into the big drill bit of extension (5), locating piece (8) groove is packed into small steel under turbine
Pearl (7), in extension wammel head (5), groove loads onto sealing ring (10), and above-mentioned global facility is packed into the big drill bit of extension (5)；?
Turbine wheel shaft (6) upper end is packed into big steel ball (3), is reloaded into locating piece on turbine (2), is connected through a screw thread top connection (1)；To extension
Big drill bit (5) loads onto the big bit nozzle of extension (11), and assembly is completed.
Based on the turbo-driven double speed PDC drill bit course of work: top connection (1) upper end connect drill string, drill string rotating it is same
When driving the big drill bit of extension (5) rotate broken rock；Cleaner for high-pressure drilling fluid is squeezed into inside drill string, drilling fluid passes through based on turbo-driven
The top connection (1) of double speed PDC drill bit flows through locating piece on turbine wheel shaft (2) and pushes turbo blade (4), and then drives turbine wheel shaft (6)
Rotation；Since turbine wheel shaft (6) is connected with flow guiding connector (9), flow guiding connector (9) is connected with the small drill bit in center (12)；Final turbine
Axis (6) drives the small drill bit in center (12) to rotate broken rock；Drilling fluid continues to flow through locating piece under turbine (8), into the big drill bit of extension
(5) annular space between flow guiding connector (9) is partially ejected from the big bit nozzle of extension (11), and another part passes through water conservancy diversion
Connector (9) enters the small drill bit in center (12), ejects from nozzle, so that bottom-hole cleaning, is carried out landwaste out of pit shaft, into
Row drillng operation.
It is provided with circumferential three uniformly distributed inclined holes on flow guiding connector (9) in above scheme, drilling fluid is from the big drill bit of extension (5)
With the annular space between flow guiding connector (9), flow guiding connector (9) are entered by inclined hole, hence into the small drill bit in center (12), when drilling
It is sprayed from nozzle, inclined hole advantageously reduces the pressure drop of drilling fluid.
It is fluted on locating piece (8) and turbine wheel shaft (6) under turbine in above scheme, small steel ball is packed between the two groove
(7)；When drilling, turbine wheel shaft (6) drives the small drill bit in center (12) to rotate broken rock, reduces locating piece (8) and turbine wheel shaft (6) under turbine
Between frictional resistance.There is pit on locating piece (2) on turbine wheel shaft (6) upper end and turbine, big steel is loaded between the two pit
Pearl (3)；When drilling, turbine wheel shaft (6) drives the small drill bit in center (12) to rotate broken rock, reduces locating piece (2) and turbine wheel shaft on turbine
(6) frictional resistance between.
Based on turbo-driven double speed PDC drill bit, there are two Y for design between the big drill bit of extension (5) and flow guiding connector (9)
Shape sealing ring (10), the opening directions of two y-shaped rings (10) is on the contrary, above upward, below downward；It can be to avoid brill
Well liquid is flowed out or is flowed between the big drill bit of extension (5) and flow guiding connector (9).
Based on turbo-driven double speed PDC drill bit, locating piece (8) was provided with circulation under locating piece (2), turbine on turbine
Road；Drilling fluid can push turbo blade (4) by locating piece on turbine (2), and then drive turbine wheel shaft (6) rotation；Later, it bores
Well liquid can be by locating piece under turbine (8), and a part is ejected from the big bit nozzle of extension (11), and another part is by leading
It flows connector (9) and enters the small drill bit in center (12).
In above scheme based on turbo-driven double speed PDC drill bit, assemble sequence are as follows: first by turbo blade 4 assembly exist
On turbine wheel shaft 6, it is connected through a screw thread upper flow guiding connector 9 in 6 lower end of turbine wheel shaft, forms global facility；Locating piece 8 under turbine is filled
Enter in the big drill bit 5 of extension, 8 groove of locating piece is packed into small steel ball 7 under turbine, loads onto sealing in 5 groove of extension wammel head
Above-mentioned global facility is packed into the big drill bit 5 of extension by circle 10；It is packed into big steel ball 3 in 6 upper end of turbine wheel shaft, is reloaded on turbine and positions
Block 2 is connected through a screw thread top connection 1；The big bit nozzle 11 of extension is loaded onto the big drill bit 5 of extension, assembly is completed.
Claims (6)
1. it is based on turbo-driven double speed PDC drill bit, by top connection (1), locating piece (2) on turbine wheel shaft, big steel ball (3), turbine
Blade (4), the big drill bit of extension (5), turbine wheel shaft (6), small steel ball (7), locating piece (8) under turbine wheel shaft, flow guiding connector (9), Y shape is close
Seal (10), the big bit nozzle of extension (11), the small drill bit in center (12) composition, it is characterized in that: assemble sequence is first by turbine leaf
Piece (4) is assemblied on turbine wheel shaft (6), is connected through a screw thread upper flow guiding connector (9) in turbine wheel shaft (6) lower end, and global facility is formed；
The big bit nozzle of extension (11) is loaded onto the big drill bit of extension (5), in extension wammel head (5), groove loads onto y-shaped ring (10),
Locating piece under turbine (8) are packed into the big drill bit of extension (5), locating piece (8) groove is packed into small steel ball (7) under turbine, will
Above-mentioned global facility is packed into the big drill bit of extension (5)；The small drill bit in center is connected through a screw thread in the other end of flow guiding connector (9)
(12)；It is packed into big steel ball (3) in turbine wheel shaft (6) upper end, locating piece on turbine (2) is reloaded into, is connected through a screw thread top connection
(1), assembly is completed.
2. according to claim 1 be based on turbo-driven double speed PDC drill bit, it is characterised in that: flow guiding connector is opened on (9)
Have circumferential three uniformly distributed inclined holes, annular space of the drilling fluid between the big drill bit of extension (5) and flow guiding connector (9), by inclined hole into
Enter flow guiding connector (9), hence into the small drill bit in center (12), when drilling sprays from center bradawl head (12) nozzle, and inclined hole is advantageous
In the pressure drop for reducing drilling fluid.
3. according to claim 1 be based on turbo-driven double speed PDC drill bit, it is characterised in that: locating piece (8) under turbine
With it is fluted on turbine wheel shaft (6), small steel ball (7) are packed between the two groove；When drilling, turbine wheel shaft (6) drives the small drill bit in center
(12) broken rock is rotated, the frictional resistance under turbine between locating piece (8) and turbine wheel shaft (6) is reduced.
4. it is according to claim 1 be based on turbo-driven double speed PDC drill bit, it is characterised in that: turbine wheel shaft (6) upper end with
There is pit on locating piece (2) on turbine, big steel ball (3) are loaded between the two pit；When drilling, turbine wheel shaft (6) drives center
Small drill bit (12) rotates broken rock, reduces the frictional resistance on turbine between locating piece (2) and turbine wheel shaft (6).
5. it is according to claim 1 be based on turbo-driven double speed PDC drill bit, it is characterised in that: the big drill bit of extension (5) with
Design is there are two y-shaped ring (10) between flow guiding connector (9), and the opening directions of two y-shaped rings (10) is on the contrary, above
Upward, below downward；It can flow out or flow between the big drill bit of extension (5) and flow guiding connector (9) to avoid drilling fluid
It goes.
6. according to claim 1 be based on turbo-driven double speed PDC drill bit, it is characterised in that: locating piece on turbine
(2), locating piece (8) is provided with flow channels under turbine；Drilling fluid can push turbo blade (4) by locating piece on turbine (2),
And then drive turbine wheel shaft (6) rotation；Later, drilling fluid can be by locating piece under turbine (8), and a part is sprayed from the big drill bit of extension
Mouth (11) ejects, and another part enters the small drill bit in center (12) by flow guiding connector (9), ejects from nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329285.6A CN110029933A (en) | 2019-04-23 | 2019-04-23 | Based on turbo-driven double speed PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329285.6A CN110029933A (en) | 2019-04-23 | 2019-04-23 | Based on turbo-driven double speed PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110029933A true CN110029933A (en) | 2019-07-19 |
Family
ID=67239801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910329285.6A Pending CN110029933A (en) | 2019-04-23 | 2019-04-23 | Based on turbo-driven double speed PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110029933A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006685A (en) * | 2021-03-17 | 2021-06-22 | 西南石油大学 | Gas drilling wall building device |
| CN113338808A (en) * | 2021-07-13 | 2021-09-03 | 中国石油大学(北京) | Main power rotary cutting wheel drill bit |
| CN111021946B (en) * | 2019-12-31 | 2022-03-18 | 中国石油集团川庆钻探工程有限公司 | Well drilling speed-increasing process for changing bottom hole confining pressure distribution by middle energy accumulation |
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| CN102561951A (en) * | 2012-01-14 | 2012-07-11 | 中国石油天然气集团公司 | Double-stage and double-speed well drilling tool |
| CN105221068A (en) * | 2015-11-10 | 2016-01-06 | 西南石油大学 | Percussion is utilized to improve the New Type of PDC Bit of heart portion efficiency of breaking rock |
| CN105421996A (en) * | 2015-11-23 | 2016-03-23 | 西南石油大学 | Drilling tool for breaking rocks by producing compound action through rotary-percussion mode |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021946B (en) * | 2019-12-31 | 2022-03-18 | 中国石油集团川庆钻探工程有限公司 | Well drilling speed-increasing process for changing bottom hole confining pressure distribution by middle energy accumulation |
| CN113006685A (en) * | 2021-03-17 | 2021-06-22 | 西南石油大学 | Gas drilling wall building device |
| CN113338808A (en) * | 2021-07-13 | 2021-09-03 | 中国石油大学(北京) | Main power rotary cutting wheel drill bit |
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Application publication date: 20190719 |
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