US3753470A - Eccentric drill tool - Google Patents
Eccentric drill tool Download PDFInfo
- Publication number
- US3753470A US3753470A US00202827A US3753470DA US3753470A US 3753470 A US3753470 A US 3753470A US 00202827 A US00202827 A US 00202827A US 3753470D A US3753470D A US 3753470DA US 3753470 A US3753470 A US 3753470A
- Authority
- US
- United States
- Prior art keywords
- drill
- sleeve
- tool
- eccentric
- drill tool
- 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 - Lifetime
Links
- 238000005553 drilling Methods 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 238000009527 percussion Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 241001494479 Pecora Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Images
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- 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
- E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
-
- 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
- E21B10/36—Percussion drill bits
- E21B10/40—Percussion drill bits with leading portion
-
- 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
- E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
- E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
Definitions
- ABSTRACT For use in drilling through earthy material into underlying rock, the eccentric drill tool of the present inven- [30] Foreign Application Priority Data Nov. 27, 1970 Sweden etc.
- tion is generally characterized by two cutting portions
- the drill tool is formed into two cutting portions, to wit, (1) a centric portion that is fixed in relation to the drill rod, and (2) an eccentric portion that is shiftable between a protruding and a retracted position.
- This formation represents a simplification of the construction in that the size of the shiftable part is relatively small: also, the stresses on the shiftable part are smaller.
- FIG. 1 is a side view of a first embodiment of the invention, the bit being in drilling position;
- FIG. 2 is an end view taken in the direction 22 in FIG. 1;
- FIG. 3 is a side view of the same drill with the drill bit in extraction position
- FIG. 4 is a side view partially in section, of a second embodiment of the invention with the drill bit in drilling position;
- FIG. 5 is a sectional view on line 5-5 of FIG. 4;
- FIG. 6 is a sectional view on line 6-6 of FIG. 4;
- FIG. 7 is a side view, partially in section, of a third embodiment with the drill bit in drilling position
- FIG. 8 is an end view along the line 88 of FIG. 7;
- FIG. 9 is a side view, partially in section, of the drill (FIG. 7) in extraction position.
- FIG. 1 the lower portion of the drill rod 10 is shown in side view and the lower portion of the tube casing 11, surrounding the drill rod, is shown in section.
- the lower end of the drill rod has a thread on which is screwed a bit adapter 12 having a cylindrical upper end 13 which serves to guide the adapter in the tube. There should be a suitable clearance between the guide portion 13 and the tube casing 11 in order to allow flushing medium and cuttings to return from the bit along the inside of the casing tube.
- the lower end 24 of the adapter 12 is threaded and carries a drill bit 25.
- the drill rod usually consists of a string of extension rods, coupled by threads, and the tube casing of a similar string of extension tubes.
- the intermediate portion 14 of the adapter 12 is cylindrical. It axis 15 is laterally displaced in relation to the drill axis 16. On said portion 14 there is mounted an eccentric sleeve 17 having a cutting insert 18. Sleeve 17 has a projection 19 on its upper side which projection is arranged to abut against a projection on the guide portion 13 when the sleeve is turned on the intermediate portion 14.
- the eccentric sleeve 17 is retained by the surrounding earth material so that the drill rotates within said sleeve until the projections abut in a position where the cutting insert 18 protrudes beyond the tube as shown in FIG. 1.
- the drill rod is turned the opposite way.
- Sleeve 17 is again retained by the surrounding material until the projections 19 and 20 abut from the other direction.
- the size of the projections is so selected that the rotation is half a turn (180). Due to the displacement of axis 15 of the intermediate portion 14, the cutting portion 18 now lies within the easing tube as shown in FIG. 3 and the rod can be pulled up within said tube.
- a central flushing bore 21 has lateral branches 22 and 23 that keep clean the space between eccentric sleeve 17 and intermediate portion 14.
- a further branch 26 from this space supplies flushing medium to the eccentric cutting insert 18.
- FIGS. 4 6 comprises a bit adapter 30 and a casing tube 31.
- the drill rod itself is not illustrated.
- the adapter 30 consists of l a guiding top part 32 within the casing tube, (2) an intermediate portion 34 on which is mounted a sleeve 35 with a cutting insert 36, and (3) a threaded bottom part 37 carrying a drill bit 38.
- the sleeve 35 cannot rotate as in the preceding embodiment but rather it is locked against rotation by flat bevels 39 on the intermediate portion 34 and matching flat surfaces inside the sleeve.
- the lateral shifting of the sleeve is effected by axial movement of the sleeve along said portion 34.
- the upper and lower parts of the portion 34 are laterally displaced in relation to each other, so that when the sleeve is in drilling position at the upper end of portion 34, as shown in FIG. 4, the cutting edge 36 protrudes beyond casing tube 31. But when the sleeve is in its extraction position at the lower end of the portion 34, the cutting edge 36 is retracted within casing tube 31.
- FIGS. 7 9 illustrate a further embodiment having a rotatable sleeve 42 similar to sleeve 17 shown in FIGS. 1 4.
- drill bit 40 has an integral shank 41 on which is mounted the rotatable sleeve 42.
- Shank 41 is coupled to the drill rod by means of a coupling sleeve 43 having threaded bores at both ends.
- the rotation position of sleeve 42 is determined by projections 44 and 45 on the sleeve and the bit, respectively. In this case they are positioned on the lower side of the sleeve, which has the advantage that the upper contact surfaces 46 between sleeve 42 and coupling sleeve 43 are plane, thus rendering efficient the transfer of percussion energy to the sleeve 42.
- the contact surfaces 47 on projections 44 and 45 are in this case inclined, which design has some advantages.
- the sleeve 42 is urged upwardly against the sleeve 43 thus improving the contact between surfaces 46.
- the bit 40 is constantly held screwed into the sleeve 43. This prevents the bit from unscrewing itself which otherwise may happen when the drill is used for reaming a previously drilled hole and only the eccentric cutting edge 48 is active.
- Eccentric drill tool for percussion drilling with drill rod means within casing tube means, which comprises two cutting parts, to wit (1) a centric part that the casing tube and serving to limit lateral movement of the tool.
- Drill tool as defined in claim 1 in which the sleeve is turnable on an eccentric portion of a shank portion of the centric part.
- Drill tool as defined in claim 2 in which rotary movement of the sleeve is limited by two axially protruding, sideways abutting projections, one situated on the sleeve and the other fixed on the drill rod.
- Drill tool as defined in claim 5 in which the projection on the sleeve protrudes forwardly and the other projection is situated on the drill bit and protrudes rearwardly.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE16078/70A SE346354B (xx) | 1970-11-27 | 1970-11-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3753470A true US3753470A (en) | 1973-08-21 |
Family
ID=20301699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00202827A Expired - Lifetime US3753470A (en) | 1970-11-27 | 1971-11-29 | Eccentric drill tool |
Country Status (15)
Country | Link |
---|---|
US (1) | US3753470A (xx) |
JP (1) | JPS5125401B1 (xx) |
AT (1) | AT330118B (xx) |
AU (1) | AU471984B2 (xx) |
BE (1) | BE775881A (xx) |
BR (1) | BR7107874D0 (xx) |
CA (1) | CA966116A (xx) |
CH (1) | CH568471A5 (xx) |
FI (1) | FI55559C (xx) |
FR (1) | FR2115421B1 (xx) |
GB (1) | GB1366495A (xx) |
IT (1) | IT941173B (xx) |
NO (1) | NO134342C (xx) |
SE (1) | SE346354B (xx) |
ZA (1) | ZA717492B (xx) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0036847A2 (en) * | 1980-03-26 | 1981-09-30 | Sandvik Aktiebolag | Drill tool |
US4620600A (en) * | 1983-09-23 | 1986-11-04 | Persson Jan E | Drill arrangement |
US4700789A (en) * | 1985-12-31 | 1987-10-20 | Velasco Vicente S | Device to obtain ring-shaped cavities in the bottom of drilled holes made in any type of medium |
US4770259A (en) * | 1986-02-24 | 1988-09-13 | Santrade Limited | Drill tool |
US4962822A (en) * | 1989-12-15 | 1990-10-16 | Numa Tool Company | Downhole drill bit and bit coupling |
US5009271A (en) * | 1990-07-16 | 1991-04-23 | Milan Maric | Drill assembly |
US5052503A (en) * | 1989-04-05 | 1991-10-01 | Uniroc Aktiebolag | Eccentric drilling tool |
US5259469A (en) * | 1990-01-17 | 1993-11-09 | Uniroc Aktiebolag | Drilling tool for percussive and rotary drilling |
US6213226B1 (en) | 1997-12-04 | 2001-04-10 | Halliburton Energy Services, Inc. | Directional drilling assembly and method |
US6325162B1 (en) | 1997-12-04 | 2001-12-04 | Halliburton Energy Services, Inc. | Bit connector |
US20030079913A1 (en) * | 2000-06-27 | 2003-05-01 | Halliburton Energy Services, Inc. | Apparatus and method for drilling and reaming a borehole |
EP1733116A1 (en) * | 2004-04-07 | 2006-12-20 | Oy Atlas Copco Rotex Ab | Device for a drilling tool |
WO2009134143A2 (en) * | 2008-04-29 | 2009-11-05 | Statoilhydro Asa | Top mill tool |
DE102008028997A1 (de) | 2008-06-20 | 2010-01-21 | Dr. Sven Becker und Dr. Michael Bahns GbR (vertretungsberechtigter Gesellschafter: Dr. Sven Becker, 30655 Hannover) | Bohrverfahren und Bohrgerät zur Herstellung eines Bohrlochs in Erde und Gestein |
US8550183B2 (en) | 2008-10-09 | 2013-10-08 | National Oilwell Varco, L.P. | Drilling method |
US9593538B2 (en) | 2008-06-27 | 2017-03-14 | Wajid Rasheed | Circumferential and longitudinal cutter coverage in continuation of a first bit diameter to a second expandable reamer diameter |
US9689209B2 (en) | 2010-12-29 | 2017-06-27 | Nov Downhole Eurasia Limited | Large gauge concentric underreamer |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2409373A1 (fr) * | 1977-11-21 | 1979-06-15 | Stenuick France | Dispositif de forage de trous dans le sol, comportant un marteau pneumatique equipe d'un taillant excentre |
JPS55142891A (en) * | 1979-04-23 | 1980-11-07 | Toyosaku Shibata | Pneumatic impact machine |
GB2216926B (en) * | 1988-04-06 | 1992-08-12 | Jumblefierce Limited | Drilling method and apparatus |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1065294A (en) * | 1911-11-15 | 1913-06-17 | Hydraulic Drilling Company | Well-boring tool. |
US1515819A (en) * | 1922-12-27 | 1924-11-18 | John A Zublin | Rotary well drill |
US1745650A (en) * | 1927-10-19 | 1930-02-04 | Grant John | Expanding roller underreamer |
US1776611A (en) * | 1927-11-12 | 1930-09-23 | Swan M Akeyson | Rotary underreamer |
US1805806A (en) * | 1930-03-07 | 1931-05-19 | Grant | Expanding reaming or cutting tool |
US2382725A (en) * | 1942-12-09 | 1945-08-14 | Patco Inc | Rotary underreamer |
US3400773A (en) * | 1965-02-19 | 1968-09-10 | Inst Francais Du Petrole | Reaming tools for wells bored in the ground |
US3416616A (en) * | 1967-03-01 | 1968-12-17 | Skanska Cementgjuteriet Ab | Deep drills with eccentric bits |
US3648789A (en) * | 1968-10-16 | 1972-03-14 | Atlas Copco Ab | Drill bit with pivoting cutting portion |
-
1970
- 1970-11-27 SE SE16078/70A patent/SE346354B/xx unknown
-
1971
- 1971-11-08 ZA ZA717492A patent/ZA717492B/xx unknown
- 1971-11-12 FI FI3243/71A patent/FI55559C/fi active
- 1971-11-17 IT IT31231/71A patent/IT941173B/it active
- 1971-11-23 AT AT1008471A patent/AT330118B/de not_active IP Right Cessation
- 1971-11-25 JP JP46094843A patent/JPS5125401B1/ja active Pending
- 1971-11-26 CH CH1726671A patent/CH568471A5/xx not_active IP Right Cessation
- 1971-11-26 AU AU36223/71A patent/AU471984B2/en not_active Expired
- 1971-11-26 BR BR7874/71A patent/BR7107874D0/pt unknown
- 1971-11-26 FR FR7142413A patent/FR2115421B1/fr not_active Expired
- 1971-11-26 BE BE775881A patent/BE775881A/xx not_active IP Right Cessation
- 1971-11-26 CA CA128,656A patent/CA966116A/en not_active Expired
- 1971-11-26 NO NO4352/71A patent/NO134342C/no unknown
- 1971-11-29 US US00202827A patent/US3753470A/en not_active Expired - Lifetime
- 1971-11-29 GB GB5529571A patent/GB1366495A/en not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1065294A (en) * | 1911-11-15 | 1913-06-17 | Hydraulic Drilling Company | Well-boring tool. |
US1515819A (en) * | 1922-12-27 | 1924-11-18 | John A Zublin | Rotary well drill |
US1745650A (en) * | 1927-10-19 | 1930-02-04 | Grant John | Expanding roller underreamer |
US1776611A (en) * | 1927-11-12 | 1930-09-23 | Swan M Akeyson | Rotary underreamer |
US1805806A (en) * | 1930-03-07 | 1931-05-19 | Grant | Expanding reaming or cutting tool |
US2382725A (en) * | 1942-12-09 | 1945-08-14 | Patco Inc | Rotary underreamer |
US3400773A (en) * | 1965-02-19 | 1968-09-10 | Inst Francais Du Petrole | Reaming tools for wells bored in the ground |
US3416616A (en) * | 1967-03-01 | 1968-12-17 | Skanska Cementgjuteriet Ab | Deep drills with eccentric bits |
US3648789A (en) * | 1968-10-16 | 1972-03-14 | Atlas Copco Ab | Drill bit with pivoting cutting portion |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0036847A2 (en) * | 1980-03-26 | 1981-09-30 | Sandvik Aktiebolag | Drill tool |
WO1981002761A1 (en) * | 1980-03-26 | 1981-10-01 | Sandvik Ab | Drill tool |
EP0036847A3 (en) * | 1980-03-26 | 1981-11-25 | Sandvik Aktiebolag | Drill tool |
US4440244A (en) * | 1980-03-26 | 1984-04-03 | Santrade Ltd. | Drill tool |
US4620600A (en) * | 1983-09-23 | 1986-11-04 | Persson Jan E | Drill arrangement |
US4700789A (en) * | 1985-12-31 | 1987-10-20 | Velasco Vicente S | Device to obtain ring-shaped cavities in the bottom of drilled holes made in any type of medium |
US4770259A (en) * | 1986-02-24 | 1988-09-13 | Santrade Limited | Drill tool |
AU605756B2 (en) * | 1986-02-24 | 1991-01-24 | Santrade Limited | Drill tool |
US5052503A (en) * | 1989-04-05 | 1991-10-01 | Uniroc Aktiebolag | Eccentric drilling tool |
US4962822A (en) * | 1989-12-15 | 1990-10-16 | Numa Tool Company | Downhole drill bit and bit coupling |
US5259469A (en) * | 1990-01-17 | 1993-11-09 | Uniroc Aktiebolag | Drilling tool for percussive and rotary drilling |
US5009271A (en) * | 1990-07-16 | 1991-04-23 | Milan Maric | Drill assembly |
US6325162B1 (en) | 1997-12-04 | 2001-12-04 | Halliburton Energy Services, Inc. | Bit connector |
US6227312B1 (en) | 1997-12-04 | 2001-05-08 | Halliburton Energy Services, Inc. | Drilling system and method |
US6213226B1 (en) | 1997-12-04 | 2001-04-10 | Halliburton Energy Services, Inc. | Directional drilling assembly and method |
US6488104B1 (en) | 1997-12-04 | 2002-12-03 | Halliburton Energy Services, Inc. | Directional drilling assembly and method |
US6494272B1 (en) | 1997-12-04 | 2002-12-17 | Halliburton Energy Services, Inc. | Drilling system utilizing eccentric adjustable diameter blade stabilizer and winged reamer |
US20030079913A1 (en) * | 2000-06-27 | 2003-05-01 | Halliburton Energy Services, Inc. | Apparatus and method for drilling and reaming a borehole |
US6920944B2 (en) | 2000-06-27 | 2005-07-26 | Halliburton Energy Services, Inc. | Apparatus and method for drilling and reaming a borehole |
CN101052779B (zh) * | 2004-04-07 | 2013-05-22 | 奥韦·格廷 | 用于钻孔工具的设备 |
US20070261892A1 (en) * | 2004-04-07 | 2007-11-15 | Ove Goting | Device for a drilling tool |
US7775303B2 (en) * | 2004-04-07 | 2010-08-17 | Goeting Ove | Device for a drilling tool |
EP1733116A1 (en) * | 2004-04-07 | 2006-12-20 | Oy Atlas Copco Rotex Ab | Device for a drilling tool |
EP1733116B1 (en) * | 2004-04-07 | 2017-10-11 | Göting, Ove | Device for a drilling tool |
WO2009134143A2 (en) * | 2008-04-29 | 2009-11-05 | Statoilhydro Asa | Top mill tool |
WO2009134143A3 (en) * | 2008-04-29 | 2010-01-07 | Statoilhydro Asa | Top mill tool |
DE102008028997A1 (de) | 2008-06-20 | 2010-01-21 | Dr. Sven Becker und Dr. Michael Bahns GbR (vertretungsberechtigter Gesellschafter: Dr. Sven Becker, 30655 Hannover) | Bohrverfahren und Bohrgerät zur Herstellung eines Bohrlochs in Erde und Gestein |
US9593538B2 (en) | 2008-06-27 | 2017-03-14 | Wajid Rasheed | Circumferential and longitudinal cutter coverage in continuation of a first bit diameter to a second expandable reamer diameter |
US8550183B2 (en) | 2008-10-09 | 2013-10-08 | National Oilwell Varco, L.P. | Drilling method |
US9689209B2 (en) | 2010-12-29 | 2017-06-27 | Nov Downhole Eurasia Limited | Large gauge concentric underreamer |
Also Published As
Publication number | Publication date |
---|---|
NO134342C (xx) | 1976-09-22 |
FI55559C (fi) | 1979-08-10 |
NO134342B (xx) | 1976-06-14 |
GB1366495A (en) | 1974-09-11 |
BE775881A (fr) | 1972-03-16 |
IT941173B (it) | 1973-03-01 |
DE2157314B2 (de) | 1973-01-11 |
AU3622371A (en) | 1973-05-31 |
FI55559B (fi) | 1979-04-30 |
FR2115421B1 (xx) | 1974-05-10 |
FR2115421A1 (xx) | 1972-07-07 |
CA966116A (en) | 1975-04-15 |
SE346354B (xx) | 1972-07-03 |
ZA717492B (en) | 1972-10-25 |
AU471984B2 (en) | 1976-05-13 |
BR7107874D0 (pt) | 1973-02-22 |
AT330118B (de) | 1976-06-10 |
CH568471A5 (xx) | 1975-10-31 |
DE2157314A1 (de) | 1972-06-15 |
JPS5125401B1 (xx) | 1976-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SANTRADE LTD., ALPENQUAI 12, CH-6002, LUCERNE, SWI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SANDVIK AKTIEBOLAG, A CORP. OF SWEDEN;REEL/FRAME:004085/0132 Effective date: 19820908 |