CN2460719Y - Side hydrophthalmos single tri-cone rotary drill bit - Google Patents
Side hydrophthalmos single tri-cone rotary drill bit Download PDFInfo
- Publication number
- CN2460719Y CN2460719Y CN 00259968 CN00259968U CN2460719Y CN 2460719 Y CN2460719 Y CN 2460719Y CN 00259968 CN00259968 CN 00259968 CN 00259968 U CN00259968 U CN 00259968U CN 2460719 Y CN2460719 Y CN 2460719Y
- Authority
- CN
- China
- Prior art keywords
- drill bit
- bit body
- rotary drill
- cone rotary
- mud
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a side hydrophthalmos single tri-cone rotary drill bit which is used for exploration and development of oilfield and natural gas or other purposes and is composed of a drill bit body 1, a bearing 2 and a pineapple 4, wherein two mud outlet channels 6, 7 are arranged in the drill bit body 1. The utility model is characterized in that two channels 6, 7 are respectively arranged on both sides of the middle part of the drill bit body 1 to form two asymmetrical water eyes; the front and the back sides of the channels 6, 7 are respectively provided with a chip removal face 8 which forms a main chip removal cavity with the well wall. The utility model solves the problems that the liquid of two water eyes mutually intersect and interfere and the sealing on the shaft end is difficult in the prior art, and the rate of penetration and the well drilling efficiency can be enhanced.
Description
The utility model relates to a kind of single-cone rotary drill bit that oil, natural gas exploration and development or other purpose are holed that is used on the earth's crust, belong to drilling bit.
Single-cone rotary drill bit is a kind of in the rock bit used of oil, gas drilling, is used widely.Hydrophthalmia on the drill bit has important function as the slurry channel of circulating mud, removing and cutting carring.If two or more hydrophthalmias are arranged on the drill bit, avoid the phase mutual interference between each hydrophthalmia high velocity liquid stream extremely important, otherwise can reduce the ability of mud eliminating and cutting carring, the drill bit rock breaking capacity is descended, thereby influence the raising of drill bit rate of penetration.The disclosed single-cone rotary drill bit of China's utility model patent (patent No. 96233451.0), in bit body, be provided with two mud runners, upper runner is positioned at the top of bit body, lower flow channel is then led to the gear claw journal lower end by the top of bit body, thereby on bit body, form two hydrophthalmias with the gear wheel axle head, because two hydrophthalmia liquid streams intersect, interfere with each other, lost a part of hydraulic energy, cause hydraulic energy to make full use of, mud is to the cleaning of shaft bottom and gear wheel, the ability that cutting carring returns ground is restricted, and influences the raising of rate of penetration, thereby influences the raising of drilling efficiency.In addition, the gear wheel axle head is arranged hydrophthalmia, can bring difficulty for the sealing of axle head.
The purpose of this utility model just provides a kind of rational deployment by the mud outlet flow, strengthens the ability that mud cleans cooling drill bit, cutting carring, thereby improves rate of penetration and drilling efficiency, does not influence the side hydrophthalmia single-cone rotary drill bit of shaft end seal simultaneously again.
For reaching above purpose, the utility model by the following technical solutions:
A kind of side hydrophthalmia single-cone rotary drill bit, form by bit body, bearing and gear wheel, bearing and gear wheel are arranged on the bit body, tooth is arranged on the gear wheel, between gear wheel and bearing sealing ring is arranged, in bit body, be provided with two mud outlet flow, it is characterized in that, two mud outlet flow lay respectively at both sides, bit body middle part, form asymmetric two hydrophthalmias, the positive back side two mud outlet flow is provided with clearance surface, forms main chip removal chamber between the clearance surface and the borehole wall, and the mud cutting carring is through returning on the main chip removal chamber.The center line of two mud outlet flow is forming an angle perpendicular to the projection on the plane of bit body axis, and the size of angle should make mud effectively landwaste be dashed from the shaft bottom, and most of landwaste are taken out of from the shaft bottom is principle, and scope is at 30～120 °.The center line of two runners and the center line of bit body form two angles respectively, and the size of angle should make mud effectively wash, cool off gear wheel, and not washing away the borehole wall again is principle, respectively in 1～60 ° of scope.
Compared with prior art, the utlity model has following advantage: (1) two asymmetric bit body side that is distributed in of side hydrophthalmia, the high velocity liquid stream in its exit is not
Intersect, the phase mutual interference is little, and the hydraulic energy loss reduces, and mud cleans drill bit and carries
The landwaste ability strengthens.(2) cancel hydrophthalmia at the gear wheel axle head, solved the sealing problem of gear wheel axle head.(3) clearance surface and the borehole wall that is provided with at the positive back side of two mud outlet flow formed one
Bigger main chip removal chamber helps the mud cutting carring and returns out ground, thereby significantly carries
High rate of penetration and drilling efficiency.
Fig. 1 is a side hydrophthalmia single-cone rotary drill bit structural front view.
Fig. 2 is side hydrophthalmia single-cone rotary drill bit hydrophthalmia 7 sectional views along the A-A line.
Fig. 3 is a side hydrophthalmia single-cone rotary drill bit structure vertical view.
Below in conjunction with description of drawings embodiment of the present utility model:
Referring to Fig. 1 and Fig. 2, whole drill bit is made up of bit body 1, bearing 2 and gear wheel 4, bearing 2 and gear wheel 4 are arranged on the bit body 1, tooth 5 is arranged on the gear wheel 4,2 on gear wheel 4 and bearing have sealing ring 3, in bit body 1, be provided with two mud outlet flow 6,7, lay respectively at both sides, bit body middle part, the center line of its center line and bit body forms two angle β and γ respectively, and the size of angle should make mud can clean gear wheel effectively, not washing away the borehole wall again is principle, respectively in 1～60 ° of scope.
Referring to Fig. 3, be provided with clearance surface 8 at the positive back side of two mud outlet flow 6,7, form main chip removal chamber between the clearance surface 8 and the borehole wall, the mud cutting carring is through returning on the main chip removal chamber.The center line of two mud outlet flow 6,7 is forming an angle α perpendicular to the projection on the plane of bit body axis, the size of angle should make mud effectively landwaste be dashed from the shaft bottom, and most of landwaste are taken out of from main chip removal chamber be principle, scope is at 30～120 °.When creeping into, mud flows out at a high speed from hydrophthalmia 6,7, cleans, cools off drill bit, and the jet addi-tional crusher rock of mud dashes landwaste from the shaft bottom simultaneously, returns out ground through main chip removal chamber.
Claims (3)
1 one kinds of side hydrophthalmia single-cone rotary drill bits, form by bit body (1), bearing (2) and gear wheel (4), between bearing (2) and gear wheel (4) sealing ring (3) is arranged, in bit body (1), be provided with two mud outlet flow (6), (7), it is characterized in that, two mud outlet flow (6), (7) lay respectively at both sides, bit body (1) middle part, form asymmetric two hydrophthalmias, be provided with clearance surface (8) at the positive back side of two mud outlet flow (6), (7), form main chip removal chamber between the clearance surface and the borehole wall.
2 side hydrophthalmia single-cone rotary drill bits as claimed in claim 1 is characterized in that, the center line of two mud outlet flow (6), (7) is forming an angle α perpendicular to the projection on the plane of bit body axis, and scope is at 30～120 °.
3 side hydrophthalmia single-cone rotary drill bits as claimed in claim 1 is characterized in that the center line of the center line of two runners (6), (7) and bit body (1) forms two angle β, γ respectively, respectively in 1～60 ° of scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00259968 CN2460719Y (en) | 2000-12-26 | 2000-12-26 | Side hydrophthalmos single tri-cone rotary drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00259968 CN2460719Y (en) | 2000-12-26 | 2000-12-26 | Side hydrophthalmos single tri-cone rotary drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2460719Y true CN2460719Y (en) | 2001-11-21 |
Family
ID=33615872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00259968 Expired - Fee Related CN2460719Y (en) | 2000-12-26 | 2000-12-26 | Side hydrophthalmos single tri-cone rotary drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2460719Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003091531A1 (en) * | 2002-04-23 | 2003-11-06 | Kingdream Public Ltd. Co. | A roller bit with a journal pin offset from the central axis thereof |
-
2000
- 2000-12-26 CN CN 00259968 patent/CN2460719Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003091531A1 (en) * | 2002-04-23 | 2003-11-06 | Kingdream Public Ltd. Co. | A roller bit with a journal pin offset from the central axis thereof |
| US7299887B2 (en) | 2002-04-23 | 2007-11-27 | Kingdream Public Ltd. Co. | Roller bit with a journal pin offset from the central axis thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108086930A (en) | Soft rock stratum reacting cycle casing drilling tool and drilling process | |
| CN106437570A (en) | Drilling type continuous sand blasting device | |
| CN206267815U (en) | Drilling type continuous sand flushing device | |
| CN106089138B (en) | Improve the loose single tube drilling tool for easily washing away formation core taking rate | |
| CN205047162U (en) | Oil drill bit | |
| CN1952342B (en) | Drill bit with pulse generation cavity | |
| CN103628815A (en) | Near-bit torsion and oscillation coupling impactor | |
| CN208981966U (en) | Twin-stage drill bit | |
| CN2386178Y (en) | Mixed drilling bit | |
| CN210049832U (en) | Diamond drill bit with rear water spray hole | |
| CN205895145U (en) | Cascadedly prevent mud drum PDC drill bit | |
| CN2460719Y (en) | Side hydrophthalmos single tri-cone rotary drill bit | |
| CN110067516A (en) | A kind of quick washing-, which is scraped, cuts combined type broken rock PDC drill bit | |
| CN110029933A (en) | Based on turbo-driven double speed PDC drill bit | |
| CN103556953A (en) | Bottom hole negative-pressure upward-going spray nozzle PDC drill bit | |
| CN208816050U (en) | A kind of diamond bit for total cost management | |
| CN112459725A (en) | PDC drill bit for geothermal well | |
| CN202039794U (en) | High efficiency cleaning drill rod for rock cuttings bed | |
| CN208203183U (en) | It is a kind of to inhale the downhole hardware that principle is swept using volume | |
| CN208168797U (en) | A kind of PDC drill bit with anti-mud drum function | |
| CN203559791U (en) | Shaft bottom negative-pressure upward-movement nozzle PDC drill | |
| CN203594356U (en) | Near-bit torsion and oscillation coupling impactor | |
| CN206928928U (en) | Rotate float shoe | |
| CN211397463U (en) | Diamond bit with sinking surface on blade | |
| CN201292773Y (en) | PDC drill for drilling flexible and hard interactive strata |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |