CN108798522B - Screw driving roller bit - Google Patents
Screw driving roller bit Download PDFInfo
- Publication number
- CN108798522B CN108798522B CN201710291047.1A CN201710291047A CN108798522B CN 108798522 B CN108798522 B CN 108798522B CN 201710291047 A CN201710291047 A CN 201710291047A CN 108798522 B CN108798522 B CN 108798522B
- Authority
- CN
- China
- Prior art keywords
- rotor
- stator
- screw
- hole
- transmission
- 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.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a screw driving roller bit, which comprises a roller and a body, and also comprises a stator and a rotor, wherein the stator is fixed relative to the body, and the stator and the rotor form a screw power motor; the rotor and the cone form rotary transmission fit, the rotor is connected with a transmission disc through a universal shaft to form shaft transmission, and the transmission disc and the cone form gear transmission. The body is provided with an inner cavity isolated from the water inlet hole, and the transmission disc is arranged in the inner cavity and forms rotary sealing fit with the body; the gear wheel is provided with a driven gear, and the gear wheel and the driving disc form gear transmission through the driven gear. The invention has important function for expanding the functions and the application of the roller bit and pushing the progress of the drilling industry. The drilling tool and the well wall abrasion resistance can be overcome, the rock breaking efficiency is improved, and the slurry fluid circulation in the drill bit is still ensured when the pump has no discharge capacity.
Description
Technical Field
The invention relates to a drill bit, in particular to a screw drive roller bit, which is suitable for the field of petroleum mine drilling.
Background
In the traditional cone bit in the drilling industry, the cone can only passively rotate while revolving, and under the action of weight on bit and rotation of a drill string, teeth crush and bite rock, and meanwhile, certain sliding is generated to shear the rock. Rock breaking mechanism of traditional roller bit: when the roller bit revolves, the roller passively rotates, and under the action of the weight on bit and the rotation of the drill string, teeth crush and bite rock, and meanwhile, certain sliding is generated to shear the rock. When the cone rolls at the bottom of the well, teeth on the cone sequentially impact and press into the stratum, and the effect crushes one part of rock at the bottom of the well, and meanwhile, the other part of rock remained among the teeth is cut off by the shearing effect caused by sliding of the cone.
The current problems are: to increase the number of impacts of teeth against rock, only by increasing the bit rotation speed; the abrasion resistance of the drilling tool and the well wall weakens the torque and the rotating speed on the drilling head, and the stability cannot be maintained, so that the rock breaking is not facilitated; when the fluid displacement in the drilling tool is small or none, the annulus is easy to form sand setting to bury the drilling tool.
Disclosure of Invention
The invention aims to provide a screw-driven roller bit, which overcomes the abrasion resistance of a drilling tool and a well wall, improves the rock breaking efficiency, and ensures the circulation of slurry fluid in the bit when a pump has no discharge capacity.
The invention is realized by the following technical scheme:
the first screw driving roller bit comprises a roller cone 7 and a body 4, wherein the roller cone 7 is in rotary transmission fit with the body 4, a water inlet hole 8 is axially formed in the body 4, and the water inlet hole 8 is downwards communicated with a nozzle 14; wherein: a stator 2 is fixed at a water inlet hole 8 of the body 4, a rotor 1 is rotatably matched in the stator 2, a sealing cavity 9 is reserved between the stator 2 and the rotor 1, and the stator 2 and the rotor 1 form a screw power motor; the number of the gear wheels 7 is one or more, and driven gears 6 are arranged on the periphery of the gear wheels 7; a drain hole 3 is arranged in the body 4, the drain hole 3 is communicated with a sealing cavity 9 between the stator 2 and the rotor 1 upwards, and the drain hole 3 is communicated with a nozzle 14 downwards; an inner cavity 15 isolated from the water inlet hole 8 is arranged at the lower part of the body 4, the lower end of the rotor 1 is connected with a transmission disc 5, and the transmission disc 5 is arranged in the inner cavity 15 and forms rotary sealing fit with the body 4; the driving disk 5 and the driven gear 6 of the cone 7 form a gear transmission fit.
The above scheme further includes:
the lower end of the rotor 1 is connected with the driving disc 5 through a universal shaft 13.
The universal shaft 13 is connected with the rotor 1 through a coupling 12, and the coupling is of a spline structure.
The center of the rotor 1 is axially provided with a middle hole 10, the bottom of the rotor is provided with a radial bottom hole 11, and the middle hole 10 is communicated with the drain hole 3 through the bottom hole 11.
The second kind of screw rod driven roller bit includes roller 7 and body 4, roller 7 and body 4 rotate and drive, there are water inlets 8 in the body 4 axially, the water inlet 8 communicates the spray nozzle 14 downward; the method is characterized in that: the upper part of the body 4 is connected with a screw nipple 16, a stator 2 is fixed in the screw nipple 16, a rotor 1 is rotatably matched in the stator 2, a sealing cavity 9 is reserved between the stator 2 and the rotor 1, and the stator 2 and the rotor 1 form a screw power motor; the number of the gear wheels 7 is one or more, and driven gears 6 are arranged on the periphery of the gear wheels 7; a drain hole 3 is arranged in the body 4, the drain hole 3 is communicated with a sealing cavity 9 between the stator 2 and the rotor 1 upwards, and the drain hole 3 is communicated with a nozzle 14 downwards; an inner cavity 15 isolated from the water inlet hole 8 is arranged at the lower part of the body 4, the lower end of the rotor 1 is connected with a transmission disc 5, and the transmission disc 5 is arranged in the inner cavity 15 and forms rotary sealing fit with the body 4; the driving disk 5 and the driven gear 6 of the cone 7 form a gear transmission fit.
The above scheme further includes:
the lower end of the rotor 1 is connected with the driving disc 5 through a universal shaft 13.
The universal shaft 13 is connected with the rotor 1 through the coupling 12, and the coupling 12 is in spline connection fit with the universal shaft 13.
The center of the rotor 1 is axially provided with a middle hole 10, the bottom of the rotor is provided with a radial bottom hole 11, and the middle hole 10 is communicated with the drain hole 3 through the bottom hole 11.
The force measuring device has the beneficial effects that: 1. the stator of the fluid driving screw mechanism rotates to drive the roller cone to rotate, and the roller cone drives the drill bit to rotate, so that the abrasion resistance of the drilling tool and the well wall is overcome, and the rotating speed and the torque of the drill bit are maintained; 2. the fluid drives the cone to actively rotate, the torque is larger and the rotating speed is higher than that of the cone during passive rotation, so that the active planing force of teeth on rock strata is larger, the rotating speed is higher, the number of times of tooth pressing and impact is increased and the rock breaking efficiency is higher when the drill bit rotates for each circle; 3. under the condition of no or low fluid displacement, the rotary drill bit can drive the stator to rotate by the rotary cone, the screw mechanism can generate downward suction effect on the fluid, the fluid is promoted to be sprayed out by the nozzle, the water hole of the drilling tool is flushed, and the drill bit and the bottom of the well are cleaned.
Drawings
FIG. 1 is a schematic view of a screw-driven roller cone drill bit according to the present invention.
FIG. 2 is a schematic view of a second screw-driven roller cone drill bit of the present invention.
Wherein: 1. rotor, 2, stator, 3, wash port, 4, body, 5, driving disk, 6, driven gear, 7, cone, 8, inlet opening, 9, sealed chamber, 10, mesopore, 11, bottom hole, 12, shaft coupling, 13, cardan shaft, 14, nozzle, 15, inner chamber, 16, screw nipple joint.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Example 1:
referring to fig. 1, the screw driving roller bit of the present invention comprises a body 4, a roller 7, a water inlet 8 and a nozzle 14, wherein a screw power motor is installed in the water inlet 8, a stator 7 of the screw power motor is embedded on the inner wall of the water inlet 8, and a rotor 1 extends downwards into the body 4. A sealed inner cavity 15 is arranged in the body 4, a transmission disc 5 is arranged in the inner cavity 15, and the transmission disc 5 and the body 4 form rotary sealing fit. The rotor 1 is connected with the driving disc 5 sequentially through the coupler 12 and the universal shaft 13, the upper end of the driving disc 5 is fixedly connected with the universal shaft 13 to form shaft transmission for transmitting torque, and the lower section is provided with teeth. The coupling 12 is of a spline structure and transmits torque together with the cardan shaft 13. One end of the cone 7 is provided with a driven gear 6, and the driven gear 6 extends into the sealing cavity 15 and is meshed with teeth of the transmission disc 5 to form gear transmission.
In the screw power motor, a sealing cavity 9 is arranged between a stator 2 and a rotor 1, the lower end of the sealing cavity 9 is communicated with a drain hole 3 in a drill bit body 4, and the drain hole 3 is communicated with a nozzle 14 of the drill bit. In addition, the rotor 1 is also provided with an axial middle hole 10 which is used as a fluid passage, the middle hole 10 is communicated with the drain hole 3 through a radial bottom hole 11 at the lower part of the rotor 1, so that part of fluid transmitted by the water hole of the upper drilling tool is directly discharged through a nozzle 14 without passing through a sealing cavity 9 of the screw power motor, and the cone and the bottom hole are flushed.
Example 2:
another embodiment of the invention referring to fig. 2, unlike embodiment 1, the stator 2 is mounted inside the screw nipple 16 by screwing the screw nipple 16 above the drill bit. In fact, the runner rubber of the stator 2 is directly vulcanized and formed on the inner wall of the screw nipple 16, and the rotor 1 is arranged in the stator 2 and extends downwards into the drill bit water inlet hole 8 to transmit torque to the transmission disc 5. A bypass valve can be further arranged above the screw nipple 16, so that internal and external pressure balance of the drilling tool during tripping is realized.
The number of the gear cones in the embodiment is one or more, and the gear cones can be single-cone drill bits, symmetrically arranged double-cone drill bits or common tri-cone drill bits, and the number of the gear cones can be more than three.
The working process of the invention is as follows: the screw driving roller bit is connected to the lowest end of the drilling string or the bottom drilling assembly, and when the pump is started, high-pressure fluid such as slurry is transmitted to the screw power motor to drive the rotor 1 to rotate, and the rotor 1 drives the roller cone 7 to rotate through the transmission disc 5. Thus, compared with the traditional roller bit, the roller cone 7 realizes active rotation, and the pressure part of the mud is converted into the torque of the rotation of the roller cone 7.
In the invention, the pressure of slurry fluid is converted into the torque of the screw stator and acts on teeth of the cone, and the fluid drives the cone to actively rotate, so that the torque is larger and the rotating speed is higher than that when the cone passively rotates. The torque is large, so that the active planing force of the teeth on the rock stratum is increased, and rock is more easily eaten and residual rock among the teeth is scraped; the rotating speed is high, so that the number of times of tooth pressing and impact is increased when the drill bit rotates once. In combination, the active rotation of the roller cone enables the rock breaking efficiency of each rotation of the drill bit to be improved.
In addition to this, another function of the invention is: when the drilling pressure exists at the bottom of the well, the drill bit rotates to drive the roller cone 7 to passively rotate, the roller cone 7 drives the rotor 1 to rotate, so that the stator 2 and the rotor 1 become screw pumps, suction effect is generated on fluid above, and the fluid in the water hole of the upper drilling tool is caused to flow downwards and be sprayed out by the spray nozzle 14. Keep the water hole of the drilling tool unobstructed and wash the bottom of the well. This has a practical role in the drilling industry: under the conditions of pump stopping, low pump speed and small pump displacement of the drilling pump, fluid in the water hole of the drilling tool has no flow rate or low flow rate, at the moment, the annular fluid has poor rock carrying capacity, rock fragments are easy to fall back to the bottom of the well to generate a large amount of sand setting, and the sand setting is easy to bury the drilling tool. At this time, the rotary table or the top drive is started, and the roller bit rotates at the bottom of the well, so that not only can the water hole of the drilling tool be kept smooth, but also the drill bit and the bottom of the well can be cleaned, the annular fluid can be kept to return upwards, and the drilling tool can be prevented from being buried by sand.
Claims (8)
1. A screw-driven roller bit comprises a roller (7) and a body (4), wherein the roller (7) is in rotary transmission fit with the body (4), a water inlet hole (8) is axially formed in the body (4), and the water inlet hole (8) is communicated with a nozzle (14) downwards; the method is characterized in that: a stator (2) is fixed at a water inlet hole (8) of the body (4), a rotor (1) is rotationally matched in the stator (2), a sealing cavity (9) is reserved between the stator (2) and the rotor (1), and the stator (2) and the rotor (1) form a screw power motor; the number of the gear wheels (7) is one or more, and driven gears (6) are arranged on the periphery of the gear wheels (7); a drain hole (3) is arranged in the body (4), the drain hole (3) is communicated with a sealing cavity (9) between the stator (2) and the rotor (1) upwards, and the drain hole (3) is communicated with a nozzle (14) downwards; an inner cavity (15) isolated from the water inlet hole (8) is arranged at the lower part of the body (4), the lower end of the rotor (1) is connected with a transmission disc (5), and the transmission disc (5) is arranged in the inner cavity (15) and forms rotary sealing fit with the body (4); the driving disk (5) and the driven gear (6) of the cone (7) form gear transmission fit.
2. The screw-driven roller cone drill bit of claim 1 wherein: the lower end of the rotor (1) is connected with a transmission disc (5) through a universal shaft (13).
3. The screw-driven roller cone drill bit of claim 2 wherein: the universal shaft (13) is connected with the rotor (1) through the coupler (12), and the coupler (12) is of a spline structure.
4. A screw-driven roller cone drill bit according to any one of claims 1 to 3, wherein: the center of the rotor (1) is axially provided with a middle hole (10), the bottom of the rotor is provided with a radial bottom hole (11), and the middle hole (10) is communicated with the drain hole (3) through the bottom hole (11).
5. A screw-driven roller bit comprises a roller (7) and a body (4), wherein the roller (7) is in rotary transmission fit with the body (4), a water inlet hole (8) is axially formed in the body (4), and the water inlet hole (8) is communicated with a nozzle (14) downwards; the method is characterized in that: the upper part of the body (4) is connected with a screw nipple (16), a stator (2) is fixed in the screw nipple (16), a rotor (1) is rotationally matched in the stator (2), a sealing cavity (9) is reserved between the stator (2) and the rotor (1), and the stator (2) and the rotor (1) form a screw power motor; the number of the gear wheels (7) is one or more, and driven gears (6) are arranged on the periphery of the gear wheels (7); a drain hole (3) is arranged in the body (4), the drain hole (3) is communicated with a sealing cavity (9) between the stator (2) and the rotor (1) upwards, and the drain hole (3) is communicated with a nozzle (14) downwards; an inner cavity (15) isolated from the water inlet hole (8) is arranged at the lower part of the body (4), the lower end of the rotor (1) is connected with a transmission disc (5), and the transmission disc (5) is arranged in the inner cavity (15) and forms rotary sealing fit with the body (4); the driving disk (5) and the driven gear (6) of the cone (7) form gear transmission fit.
6. The screw-driven roller cone drill bit of claim 5 wherein: the lower end of the rotor (1) is connected with a transmission disc (5) through a universal shaft (13).
7. The screw-driven roller cone drill bit of claim 6 wherein: the universal shaft (13) is connected with the rotor (1) through the coupler (12), and the coupler (12) is of a spline structure.
8. The screw-driven roller cone drill bit of any one of claims 5 through 7 wherein: the center of the rotor (1) is axially provided with a middle hole (10), the bottom of the rotor is provided with a radial bottom hole (11), and the middle hole (10) is communicated with the drain hole (3) through the bottom hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291047.1A CN108798522B (en) | 2017-04-28 | 2017-04-28 | Screw driving roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291047.1A CN108798522B (en) | 2017-04-28 | 2017-04-28 | Screw driving roller bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798522A CN108798522A (en) | 2018-11-13 |
| CN108798522B true CN108798522B (en) | 2023-07-21 |
Family
ID=64069945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710291047.1A Active CN108798522B (en) | 2017-04-28 | 2017-04-28 | Screw driving roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798522B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU966222A1 (en) * | 1981-03-06 | 1982-10-15 | Ивано-Франковское Специальное Конструкторское Бюро Средств Автоматизации Министерства Приборостроения Средств Автоматизации И Систем Управления Ссср | Over bit gas-liquid separator |
| DE3927625A1 (en) * | 1989-08-22 | 1991-02-28 | Gerhard Bihler | Deep well diamond boring head - with high-speed central drill bit and slow-speed outer drill bit driven by moineau motor |
| CN202913946U (en) * | 2012-06-15 | 2013-05-01 | 盐城市新永佳石油机械制造有限公司 | Screw drill |
| CN104832108A (en) * | 2015-05-19 | 2015-08-12 | 中国石油大学(北京) | Continuous damming pulse jetting acceleration drill bit |
| CN206987733U (en) * | 2017-04-28 | 2018-02-09 | 中石化石油工程技术服务有限公司 | A kind of screw drive rock bit |
-
2017
- 2017-04-28 CN CN201710291047.1A patent/CN108798522B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU966222A1 (en) * | 1981-03-06 | 1982-10-15 | Ивано-Франковское Специальное Конструкторское Бюро Средств Автоматизации Министерства Приборостроения Средств Автоматизации И Систем Управления Ссср | Over bit gas-liquid separator |
| DE3927625A1 (en) * | 1989-08-22 | 1991-02-28 | Gerhard Bihler | Deep well diamond boring head - with high-speed central drill bit and slow-speed outer drill bit driven by moineau motor |
| CN202913946U (en) * | 2012-06-15 | 2013-05-01 | 盐城市新永佳石油机械制造有限公司 | Screw drill |
| CN104832108A (en) * | 2015-05-19 | 2015-08-12 | 中国石油大学(北京) | Continuous damming pulse jetting acceleration drill bit |
| CN206987733U (en) * | 2017-04-28 | 2018-02-09 | 中石化石油工程技术服务有限公司 | A kind of screw drive rock bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108798522A (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107664013B (en) | Impeller Type Axial and Circumferential Composite Impactor | |
| US8851204B2 (en) | Mud motor with integrated percussion tool and drill bit | |
| CN107664012B (en) | Turbine type bidirectional high-frequency composite impactor | |
| CN107664015B (en) | Screw type double-acting accelerating tool | |
| CN202990851U (en) | Screw type high-frequency percussion drilling tool | |
| CN112483005B (en) | Rock breaking drill bit for underground drilling tool | |
| CN109779520B (en) | Pulse type spiral impact drilling tool | |
| CN207436916U (en) | Screw double acting speed-raising instrument | |
| CN107542397A (en) | A kind of oil drilling coupled surge device | |
| CN105201402A (en) | Torsional impact drilling device | |
| CN102561951A (en) | Double-stage and double-speed well drilling tool | |
| CN107542405A (en) | Waterpower pulse helicoid hydraulic motor | |
| CN105525868B (en) | A kind of pulsating double direction impulse device | |
| CN108547571B (en) | An eccentric torsional percussion drilling tool | |
| CN102003145A (en) | Hole driven type horizontal directional drilling reverse circulation hole dilating drill | |
| CN110410011B (en) | A screw drill with function of preventing water hole of drill bit from being blocked | |
| CN206888918U (en) | One kind can steering screw drilling tool | |
| CN108798522B (en) | Screw driving roller bit | |
| CN107165574B (en) | A kind of block stamp formula impact helicoid hydraulic motor | |
| CN203701966U (en) | Screw axial-flow type underground power pressurization drilling tool | |
| CN113338808A (en) | Main power rotary cutting wheel drill bit | |
| CN108868605A (en) | The closely horizontal superdeep holes directional drilling drill string power propulsion system of underground coal mine and method | |
| CN207436906U (en) | The two-way high frequency composite impact device of turbine type | |
| CN206987733U (en) | A kind of screw drive rock bit | |
| CN215859974U (en) | Three-dimensional rock breaking tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |