CN104747086A - Double-step self-locked while-drilling reamer blade - Google Patents
Double-step self-locked while-drilling reamer blade Download PDFInfo
- Publication number
- CN104747086A CN104747086A CN201310743823.9A CN201310743823A CN104747086A CN 104747086 A CN104747086 A CN 104747086A CN 201310743823 A CN201310743823 A CN 201310743823A CN 104747086 A CN104747086 A CN 104747086A
- Authority
- CN
- China
- Prior art keywords
- wing
- blade
- crown
- composite sheet
- pdc composite
- 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
- 238000005553 drilling Methods 0.000 title abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 230000036346 tooth eruption Effects 0.000 claims abstract description 18
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 210000000515 tooth Anatomy 0.000 description 10
- 230000003321 amplification Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
- E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
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 double-step self-locked while-drilling reamer blade which comprises a blade body, PDC composite piece cutting teeth and gauge teeth. A pin shaft hole is arranged in the lower end of the blade body, a front anti-thrust step and a rear self-locking step are arranged at the front end and the rear end of the blade body, the left side of the blade body is provided with a structure with two slopes clamping a concave cylindrical surface, upper and lower crown surface contours of the blade on the right side are short parabola contour crown surfaces, and middle planes of the upper and lower crown surfaces are connected; the PDC composite piece cutting teeth are embedded in the upper and lower crown surfaces of the blade, the gauge teeth are embedded in the middle planes of the upper and lower crown surfaces, and the two rows of cutting teeth and gauge teeth are arrayed to display high-density complete projection coverage. The blade is limited and self-locked through the double-step structure, borehole diameter of the reared well of a long well segment can be guaranteed by the aid of the short parabola contour of the blade and high-density complete projection coverage modes, reaming quality is improved, back reaming can be achieved, service life of the blade is prolonged, and the double-step self-locked while-drilling reamer blade is simple in structure, convenient to mount, use and operate and safe and reliable.
Description
Technical field
The present invention relates to drilling tool field, is a kind of double step self-locking drill-following reamer blade for the operation of drilling well reaming hole in particular.
Background technology
Along with petroleum gas bores completion towards extended reach well and employing expansion tube completion future development, the drilling well situation faced becomes increasingly complex, reaming while drilling technology is as a kind of very effective means of complex situations such as process down-hole hole shrinkages, casing annulus gap is increased by the expansion of borehole diameter, enter under being conducive to sleeve pipe and expansion tube, increase the thickness of cement sheath, improve target zone cementing quality.The reamer of current application, arm-type reamer and most of slide block type drill-following reamer, its wing all can not self-locking, under wing open configuration, the hard and hard formation of centering, strengthens the pressure of the drill, wing can be caused to shrink in trend body, cause some well section hole diameter not reach the amplification degree of requirement; Existing drill-following reamer blade major part can not realize back reaming, or length parabolic shape can not be presented at its wing open configuration, make force on PDC cutter uneven wear serious, cause the life-span of reamer blade short, lost efficacy fast, the requirement of reaming hole operation can not be met.
Summary of the invention
The present invention seeks to cause wing to shrink in trend body to solve existing reamer blade when strengthening the pressure of the drill, cause the problem that well amplification degree reduces, there is provided one to overcome deficiency of the prior art, and back reaming function and force on PDC cutter uniform double step self-locking drill-following reamer blade can be realized.
Technical solution of the present invention comprises:
A kind of double step self-locking drill-following reamer blade, PDC composite sheet cutting teeth and PDC composite sheet gauge teeth are embedded on wing body, and wing body lower end is provided with pin shaft hole, and front end and rear end are provided with front thrust step and rear latching step.
In addition, the wing side of wing body to be provided with on wing crown under crown and wing, and opposite side is that two inclined-planes press from both sides recessed cylindrical structure; PDC composite sheet cutting teeth is embedded under crown on wing, wing on crown, and PDC composite sheet gauge teeth is embedded in the plane on wing under crown and wing between crown.On wing, under crown and wing, crown profile all adopts and shortly cuts open thing line profile crown.PDC composite sheet cutting teeth and the arrangement of PDC composite sheet gauge teeth present radial direction (borehole wall direction) and axially (direction, the shaft bottom) high density that projects all standing; Chip area is had between PDC composite sheet cutting teeth and PDC composite sheet gauge teeth.
Wing body is arranged in the semicircle window in drill-following reamer body long trough two ends, during assembling, wing is pushed into maximum deployed position, loaded by body side bearing pin pilot hole and connect bearing pin through piston and wing pin shaft hole, wing is connected with inner carrier, wing is moved downward by guide slide and collapses into body under spring force, bearing pin retrains wing at axial direction, and the semicircle window side in drill-following reamer body long trough two ends carries out radial constraint to wing.
When carrying out reaming while drilling operation, drill-following reamer is connected on the pilot bit of shaft bottom, in bottomhole assembly, drilling fluid enters drill-following reamer by drilling tool, by the reamer blade of pinned connection on piston by cleaner for high-pressure drilling fluid upwardly, wing opens along the oblique slideway of body, before wing, during thrust step arrival drill-following reamer body step state, wing opens completely, drill-following reamer is rotary, wing cutting teeth cuts the borehole wall, well is constantly expanded, when strengthening the pressure of the drill, on wing, pressure acts on body step by front end step, rear latching step acts on piston cylinder, make wing self-locking, keep whole reaming hole well section well amplification degree.When needing back water, drilling tool is carried in rotation, the short thing line profile crown that cuts open in top cuts the borehole wall, realizes back reaming function.
Advantage of the present invention is that wing adopts double step structure to carry out spacing and self-locking, wing is short cuts open thing line profile and projection high density all standing cloth tooth mode, long well section well reaming hole hole diameter can either be ensured, improve reaming hole quality, again can back reaming and extend application life of wing, this wing structure is simple, installs and uses easy and simple to handle, safe and reliable.
Accompanying drawing explanation
Fig. 1 is that a kind of double step self-locking drill-following reamer blade faces structural representation.
Fig. 2 is the perspective view of Fig. 1.
Fig. 3 is that a kind of wing of embodiment is arranged on structural representation in drill-following reamer.
In figure: 1 wing body, crown on 2 wings, 3 PDC composite sheet gauge teeths, 4 PDC composite sheet cutting teeths, crown under 5 wings, 6 wing pin shaft holes, 7 chip areas, thrust step before 8, latching step after 9,10 drill-following reamer bodies, 11 body windows, 12 body guide slides, 13 body steps, 14 body bearing pin pilot holes.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the invention will be further described.
With reference to Figure of description 1, Fig. 2, a kind of double step self-locking drill-following reamer blade, comprise wing body 1, PDC composite sheet cutting teeth 4 and PDC composite sheet gauge teeth 5, wing body lower end is provided with pin shaft hole 6, front end and rear end are provided with front thrust step 8 and rear latching step 9, left side is that two inclined-planes press from both sides recessed cylindrical structure, and crown 2 on the wing of right side, lower crown 5 profile all adopt and shortly cut open thing line profile crown, and upper crown 2, lower crown 5 mid-plane connect; PDC composite sheet cutting teeth 4 is embedded on the upper and lower crown of wing, gauge teeth 3 is embedded in the plane in the middle of upper and lower crown, crown is arranged respectively front two rows PDC composite sheet cutting teeth 4 and gauge teeth 3, and two row cutting teeths and gauge teeths arrange and present radial direction (borehole wall direction) and axis (direction, the shaft bottom) high density that projects all standing, between two toothrows, have chip area 7.
With reference to Figure of description 3, wing body 1 is arranged in the semicircle window 11 in drill-following reamer body 10 long trough two ends, during assembling, wing is pushed into maximum deployed position, loaded by body side bearing pin pilot hole 14 and connect bearing pin through piston and wing pin shaft hole 6, wing is connected with inner carrier, wing is moved downward by guide slide 12 and collapses into drill-following reamer body 10 under spring force, bearing pin retrains wing at axial direction, and the semicircle window side in drill-following reamer body long trough two ends carries out radial constraint to wing.
When carrying out reaming while drilling operation, drill-following reamer is connected on the pilot bit of shaft bottom, in bottomhole assembly, drilling fluid enters drill-following reamer by drilling tool, by the reamer blade of pinned connection on piston by cleaner for high-pressure drilling fluid upwardly, wing opens along body guide slide 12, when before wing, thrust step 8 arrives drill-following reamer body step 13 state, wing opens completely, when drill-following reamer rotates, wing cutting teeth cuts the borehole wall, well is constantly expanded, when strengthening the pressure of the drill, on wing, pressure acts on body step 13 by front end step 8, rear latching step 9 acts on piston cylinder, make wing self-locking, keep whole reaming hole well section well amplification degree.When needing back water, drilling tool is carried in rotation, the short thing line profile crown that cuts open in top cuts the borehole wall, realizes back reaming function.
Claims (5)
1. a double step self-locking drill-following reamer blade, comprise wing body (1) and be embedded in PDC composite sheet cutting teeth (4), the PDC composite sheet gauge teeth (5) on wing body (1), it is characterized in that: wing body (1) lower end is provided with pin shaft hole (6), front end and rear end are provided with front thrust step (8) and rear latching step (9).
2. double step self-locking drill-following reamer blade according to claim 1, is characterized in that: the wing side of described wing body (1) is provided with crown (5) under crown on wing (2) and wing, and opposite side is that two inclined-planes press from both sides recessed cylindrical structure; PDC composite sheet cutting teeth (4) is embedded under crown on wing (2), wing on crown (5), and PDC composite sheet gauge teeth (3) is embedded in the plane under crown on wing (2) and wing between crown (5).
3. double step self-locking drill-following reamer blade according to claim 2, is characterized in that: on described wing, under crown (2) and wing, crown (5) profile all adopts and shortly cuts open thing line profile crown.
4. the double step self-locking drill-following reamer blade according to Claims 2 or 3, is characterized in that: described PDC composite sheet cutting teeth (4) and PDC composite sheet gauge teeth (5) arrangement present radial direction and all standing of axis projection high density.
5. the double step self-locking drill-following reamer blade according to Claims 2 or 3, is characterized in that: have chip area (7) between described PDC composite sheet cutting teeth (4) and PDC composite sheet gauge teeth (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743823.9A CN104747086A (en) | 2013-12-31 | 2013-12-31 | Double-step self-locked while-drilling reamer blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743823.9A CN104747086A (en) | 2013-12-31 | 2013-12-31 | Double-step self-locked while-drilling reamer blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104747086A true CN104747086A (en) | 2015-07-01 |
Family
ID=53587265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310743823.9A Pending CN104747086A (en) | 2013-12-31 | 2013-12-31 | Double-step self-locked while-drilling reamer blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533180A (en) * | 2018-04-24 | 2018-09-14 | 中国海洋石油集团有限公司 | A kind of drilling engineering is with boring hole-drawing device and reaming method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653113Y (en) * | 2003-06-25 | 2004-11-03 | 胜利石油管理局钻井工艺研究院 | Hydraulic expansion type PDC hole expander |
| CN201162493Y (en) * | 2007-12-04 | 2008-12-10 | 西南石油大学 | Bidirectional drill-following reamer blade |
| CN101479439A (en) * | 2006-05-15 | 2009-07-08 | 贝克休斯公司 | Reaming tool suitable for running on casing or liner and method of reaming |
| GB2465504A (en) * | 2008-06-27 | 2010-05-26 | Wajid Rasheed | Reamer and calliper tool with vibration analysis |
| CN202081824U (en) * | 2011-02-24 | 2011-12-21 | 西南石油大学 | Hydraulic parallel-slippage expanding reamer while drilling |
| US8327954B2 (en) * | 2008-07-09 | 2012-12-11 | Smith International, Inc. | Optimized reaming system based upon weight on tool |
| CN203756040U (en) * | 2013-12-31 | 2014-08-06 | 中国石油化工集团公司 | Double-step self-locking blade of reaming-while-drilling device |
-
2013
- 2013-12-31 CN CN201310743823.9A patent/CN104747086A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653113Y (en) * | 2003-06-25 | 2004-11-03 | 胜利石油管理局钻井工艺研究院 | Hydraulic expansion type PDC hole expander |
| CN101479439A (en) * | 2006-05-15 | 2009-07-08 | 贝克休斯公司 | Reaming tool suitable for running on casing or liner and method of reaming |
| CN201162493Y (en) * | 2007-12-04 | 2008-12-10 | 西南石油大学 | Bidirectional drill-following reamer blade |
| GB2465504A (en) * | 2008-06-27 | 2010-05-26 | Wajid Rasheed | Reamer and calliper tool with vibration analysis |
| US8327954B2 (en) * | 2008-07-09 | 2012-12-11 | Smith International, Inc. | Optimized reaming system based upon weight on tool |
| CN202081824U (en) * | 2011-02-24 | 2011-12-21 | 西南石油大学 | Hydraulic parallel-slippage expanding reamer while drilling |
| CN203756040U (en) * | 2013-12-31 | 2014-08-06 | 中国石油化工集团公司 | Double-step self-locking blade of reaming-while-drilling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533180A (en) * | 2018-04-24 | 2018-09-14 | 中国海洋石油集团有限公司 | A kind of drilling engineering is with boring hole-drawing device and reaming method |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |