CN103510863A - Rotatable hydraulic jet drill bit - Google Patents
Rotatable hydraulic jet drill bit Download PDFInfo
- Publication number
- CN103510863A CN103510863A CN201310509413.8A CN201310509413A CN103510863A CN 103510863 A CN103510863 A CN 103510863A CN 201310509413 A CN201310509413 A CN 201310509413A CN 103510863 A CN103510863 A CN 103510863A
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- CN
- China
- Prior art keywords
- drill bit
- ejector
- drill body
- bit body
- hydraulic jet
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- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 239000011435 rock Substances 0.000 abstract description 8
- 238000005553 drilling Methods 0.000 description 11
- 239000007921 spray Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The invention relates to a rotatable hydraulic jet drill bit. The rotatable hydraulic jet drill bit comprises a housing, an ejector and a drill bit body; the ejector and the drill bit body are positioned inside the housing; the drill bit body is positioned in front of the ejector; water outlets are formed in the ejector and the drill bit body, and are communicated with one another; the water outlets in the drill bit body comprise a straight hole and a plurality of inclined holes, the straight hole is positioned in the center of the drill bit body, the inclined holes are radially arranged around the straight hole, and are inclined in the tangential direction respectively, and the incline directions of the inclined holes are the same. The rotatable hydraulic jet drill bit utilizes high-pressure water flow to realize jetting of the inclined holes in the drill bit body to exert a rotary force on the drill bit body, so that the drill bit body can realize jetting and clockwise or counterclockwise rotation at the same time; points of strength of jetting are changed continually to prevent water from jetting a plurality of single holes, and the operation is convenient so as to realize the purpose that the hydraulic rotating jetting can be utilized to break rocks.
Description
Technical field
The invention belongs to OFME field, relate to a kind of rotatable hydraulic jet bit.
Background technology
Horizontal well refers to that hole angle reaches or approaches 90 °, and well bore creeps into the well of certain length along horizontal direction.In general, horizontal well is applicable to thin oil-gas Layer or fractured reservoirs, and object is to increase the bare area of oil-gas Layer.Horizontal well drilling technology refers to and utilizes special shaft bottom power tool and measurement while-drilling instrument, being drilled to hole angle reaches or approaches 90 °, and keep this angle to creep into the directed-drilling technique of certain length well section, comprise drilling measuring technology, control Technology for Borehole Trajectory, wellbore stability technology, Completion Fluid etc.Oil drilling method is upgraded through the development of decades, or take rotary drilling as main, utilizes rotating disk or helicoid hydraulic motor to drive the broken rock of drill bit.But the radius of curvature that changes net horizontal section from peupendicular hole section into is less, and difficulty of construction is larger.In general, the radius of curvature of major radius horizontal well is 300m ~ 900m, and the radius of curvature of medium radius horizontal well is 86m ~ 215m, and the radius of curvature of Short Radius Horizontal Wells is 10m ~ 20m.In succession there is in recent years super short radial horizontal well drilling technology, because short radius drilling well need adopt flex-stem, be subject to the restriction of flex-stem transmitting torque, if continue to adopt rotary drilling method will make the horizontal section length of short radius drilling well also be restricted.At present, existing people is that rock is broken in jetting by rotary drilling method improvement, but the shower nozzle outlet water orifice diameter that traditional jetting adopts is less, pore-forming aperture is 20mm ~ 50mm, when geology changes, easily there is obturation in spray orifice, to production, brings a lot of inconvenience.And a plurality of weep holes are set on a shower nozzle, during broken rock, can on rock face, form the single hole that a plurality of diameters are less.Therefore, need to improve existing hydraulic jet bit, make it spray the rear larger pore-forming that forms.
Summary of the invention
The object of this invention is to provide a kind of rotatable hydraulic jet bit, solving existing hydraulic jet bit cannot rotate, and can only spray facing one direction, a plurality of single holes cannot be connected into the problem of larger pore-forming.
The present invention is achieved through the following technical solutions: rotatable hydraulic jet bit, this device comprises overcoat, ejector and drill body, ejector and drill body are positioned at overcoat inside, drill body is placed in the place ahead of ejector, on ejector and drill body, all have weep hole, and the weep hole on ejector and drill body communicates; Weep hole on drill body is divided into two kinds of straight hole and inclined holes, and straight hole is positioned at the central authorities of drill body, and inclined hole is a plurality of and arranges radially centered by straight hole, a plurality of inclined holes tangentially tilt respectively and incline direction consistent.
Described inclined hole is clockwise inclination.
Described inclined hole is counterclockwise inclination.
The angle of inclination of described inclined hole is 30 °.
Pressure bearing is also equipped with in described drill body outside.
Described pressure bearing front end is equipped with bearing pressure cap.
Adopt the good effect of technique scheme: the present invention relies on High-Pressure Water to spray the inclined hole on drill body, drill body is applied to revolving force, make drill body while spraying clockwise or being rotated counterclockwise, the origin of force that ceaselessly conversion is sprayed, prevent that it from spraying a plurality of single holes, convenient use, thus reach the object that waterpower driven rotary sprays broken rock.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the top view of drill body in Fig. 1.
In figure, 1 overcoat, 2 ejectors, 3 drill bodies, 4 straight holes, 5 inclined holes, 6 pressure bearings, 7 bearing pressure caps.
The specific embodiment
below in conjunction with accompanying drawing, technical scheme of the present invention is described further, but should not be construed as limitation of the present invention:
Fig. 1 is structural representation of the present invention, Fig. 2 is the top view of drill body in Fig. 1, shown in Fig. 1, Fig. 2, rotatable hydraulic jet bit, this device comprises overcoat 1, ejector 2 and drill body 3, and ejector 2 and drill body 3 are positioned at overcoat 1 inside, and drill body 3 is placed in the place ahead of ejector 2, on ejector 2 and drill body 3, all have weep hole, and the weep hole on ejector 2 and drill body 3 communicates.The effect of ejector 2 is to provide High-Pressure Water, sprays into the weep hole on drill body.Weep hole on drill body 3 is divided into 5 two kinds of straight hole 4 and inclined holes, and straight hole 4 is positioned at the central authorities of drill body 3, and inclined hole 5 is a plurality of and arranges radially centered by straight hole 4, a plurality of inclined holes 5 tangentially tilt respectively and incline direction consistent.The water flow pressure of the straight hole ejection of central authorities is maximum, and circumferential inclined hole is owing to tangentially tilting, and therefore the High-Pressure Water when ejector ejection sprays into after inclined hole, and a kind of revolving force is provided, and drill body is rotated.
In the present invention, described inclined hole 5 is clockwise inclination, or described inclined hole 5 is counterclockwise inclination.Result is that drill body can turn clockwise, and also can be rotated counterclockwise.As preferred forms of the present invention, the angle of inclination of inclined hole 5 is 30 °.
Due to drill body when rotated and between outer casing inner wall, exist very large frictional force, in order to reduce friction, pressure bearing 6 is also equipped with in described drill body 3 outsides.For pressure bearing is fixed, prevent that it from deviating from, at described pressure bearing 6 front ends, bearing pressure cap 7 is housed.
During use, ejector ejection High-Pressure Water, High-Pressure Water sprays into after inclined hole, drill body rotates while spraying High-Pressure Water, ceaselessly converts origin of force, and the aperture spraying on rock is connected in flakes gradually, form larger pore-forming, thereby reach the object that waterpower driven rotary sprays broken rock.
Claims (6)
1. a rotatable hydraulic jet bit, it is characterized in that: this device comprises overcoat (1), ejector (2) and drill body (3), ejector (2) and drill body (3) are positioned at overcoat (1) inside, drill body (3) is placed in the place ahead of ejector (2), on ejector (2) and drill body (3), all have weep hole, and the weep hole on ejector (2) and drill body (3) communicates; Weep hole on drill body (3) is divided into (5) two kinds of straight hole (4) and inclined holes, straight hole (4) is positioned at the central authorities of drill body (3), inclined hole (5) is a plurality of and arrangement radially centered by straight hole (4), and tangentially inclination and incline direction are consistent respectively for a plurality of inclined holes (5).
2. rotatable hydraulic jet bit according to claim 1, is characterized in that: described inclined hole (5) is clockwise inclination.
3. rotatable hydraulic jet bit according to claim 1, is characterized in that: described inclined hole (5) is counterclockwise inclination.
4. according to the rotatable hydraulic jet bit described in claim 2 or 3, it is characterized in that: the angle of inclination of described inclined hole (5) is 30 °.
5. rotatable hydraulic jet bit according to claim 1, is characterized in that: pressure bearing (6) is also equipped with in described drill body (3) outside.
6. rotatable hydraulic jet bit according to claim 5, is characterized in that: described pressure bearing (6) front end is equipped with bearing pressure cap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310509413.8A CN103510863A (en) | 2013-10-25 | 2013-10-25 | Rotatable hydraulic jet drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310509413.8A CN103510863A (en) | 2013-10-25 | 2013-10-25 | Rotatable hydraulic jet drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103510863A true CN103510863A (en) | 2014-01-15 |
Family
ID=49894228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310509413.8A Pending CN103510863A (en) | 2013-10-25 | 2013-10-25 | Rotatable hydraulic jet drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103510863A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3468385A (en) * | 1968-05-29 | 1969-09-23 | Salvatore J Penza | Underwater power tool |
| US20080110629A1 (en) * | 2001-11-07 | 2008-05-15 | David Belew | Internally rotating nozzle for facilitating drilling through a subterranean formation |
| US20100270081A1 (en) * | 2009-04-27 | 2010-10-28 | Radial Drilling Technologies II, LLC. | Apparatus and Method for Lateral Well Drilling Utilizing a Nozzle Assembly with Gauge Ring and/or Centralizer |
| CN202176263U (en) * | 2011-08-20 | 2012-03-28 | 大庆井泰石油工程技术股份有限公司 | Well-drilling jet head for hydraulic jet |
| CN202788631U (en) * | 2012-08-10 | 2013-03-13 | 河南易安能源科技有限公司 | Hydraulic jet drill |
| CN203547550U (en) * | 2013-10-25 | 2014-04-16 | 大庆井泰石油工程技术股份有限公司 | Rotatable hydraulic jetting drill bit |
-
2013
- 2013-10-25 CN CN201310509413.8A patent/CN103510863A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3468385A (en) * | 1968-05-29 | 1969-09-23 | Salvatore J Penza | Underwater power tool |
| US20080110629A1 (en) * | 2001-11-07 | 2008-05-15 | David Belew | Internally rotating nozzle for facilitating drilling through a subterranean formation |
| US20100270081A1 (en) * | 2009-04-27 | 2010-10-28 | Radial Drilling Technologies II, LLC. | Apparatus and Method for Lateral Well Drilling Utilizing a Nozzle Assembly with Gauge Ring and/or Centralizer |
| CN202176263U (en) * | 2011-08-20 | 2012-03-28 | 大庆井泰石油工程技术股份有限公司 | Well-drilling jet head for hydraulic jet |
| CN202788631U (en) * | 2012-08-10 | 2013-03-13 | 河南易安能源科技有限公司 | Hydraulic jet drill |
| CN203547550U (en) * | 2013-10-25 | 2014-04-16 | 大庆井泰石油工程技术股份有限公司 | Rotatable hydraulic jetting drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |