EP0225101A3 - Improvements in or relating to drill bits - Google Patents

Improvements in or relating to drill bits

Info

Publication number
EP0225101A3
EP0225101A3 EP86308956A EP86308956A EP0225101A3 EP 0225101 A3 EP0225101 A3 EP 0225101A3 EP 86308956 A EP86308956 A EP 86308956A EP 86308956 A EP86308956 A EP 86308956A EP 0225101 A3 EP0225101 A3 EP 0225101A3
Authority
EP
European Patent Office
Prior art keywords
bit
elements
formation
movable structure
bit body
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.)
Withdrawn
Application number
EP86308956A
Other languages
German (de)
French (fr)
Other versions
EP0225101A2 (en
Inventor
John Denzil Barr
Michael Thomas Wardley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NL Petroleum Products Ltd
Original Assignee
NL Petroleum Products Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NL Petroleum Products Ltd filed Critical NL Petroleum Products Ltd
Publication of EP0225101A2 publication Critical patent/EP0225101A2/en
Publication of EP0225101A3 publication Critical patent/EP0225101A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/14—Roller bits combined with non-rolling cutters other than of leading-portion type

Abstract

A rotary drill bit for drilling deep holes in subsurface formations comprises a bit body (10) having a shank for connection to a drill string and a plurality of elements (16,22) mounted on the bit body (10) for cutting, abrading or bearing on the formation being drilled. The bit body (10) includes a fixed structure (11) and a movable structure (17), each carrying elements (16,22) for acting on the formation, the movable structure (17) being capable of reversible movement relatively to the fixed structure (11) between two limiting positions, the relative movement providing at least two configurations in which there are different distributions, between said elements (16,22), of the loads applied to the bit during its engagement with the formation. Control means, such as hydraulic means (29,30), are provided to control the movement of the movable structure (17), and hence the load distribution between the elements (16,22), automatically in response to the torque and/or axial loads applied to the bit.
EP86308956A 1985-11-23 1986-11-17 Improvements in or relating to drill bits Withdrawn EP0225101A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8528894 1985-11-23
GB858528894A GB8528894D0 (en) 1985-11-23 1985-11-23 Rotary drill bits

Publications (2)

Publication Number Publication Date
EP0225101A2 EP0225101A2 (en) 1987-06-10
EP0225101A3 true EP0225101A3 (en) 1988-09-21

Family

ID=10588676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86308956A Withdrawn EP0225101A3 (en) 1985-11-23 1986-11-17 Improvements in or relating to drill bits

Country Status (3)

Country Link
EP (1) EP0225101A3 (en)
AU (1) AU6538886A (en)
GB (2) GB8528894D0 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8056651B2 (en) 2009-04-28 2011-11-15 Baker Hughes Incorporated Adaptive control concept for hybrid PDC/roller cone bits
US8141664B2 (en) 2009-03-03 2012-03-27 Baker Hughes Incorporated Hybrid drill bit with high bearing pin angles
US8157026B2 (en) 2009-06-18 2012-04-17 Baker Hughes Incorporated Hybrid bit with variable exposure
US8191635B2 (en) 2009-10-06 2012-06-05 Baker Hughes Incorporated Hole opener with hybrid reaming section
US8356398B2 (en) 2008-05-02 2013-01-22 Baker Hughes Incorporated Modular hybrid drill bit
US8448724B2 (en) 2009-10-06 2013-05-28 Baker Hughes Incorporated Hole opener with hybrid reaming section
US8459378B2 (en) 2009-05-13 2013-06-11 Baker Hughes Incorporated Hybrid drill bit
US8678111B2 (en) 2007-11-16 2014-03-25 Baker Hughes Incorporated Hybrid drill bit and design method
US8950514B2 (en) 2010-06-29 2015-02-10 Baker Hughes Incorporated Drill bits with anti-tracking features
US8978786B2 (en) 2010-11-04 2015-03-17 Baker Hughes Incorporated System and method for adjusting roller cone profile on hybrid bit
US9004198B2 (en) 2009-09-16 2015-04-14 Baker Hughes Incorporated External, divorced PDC bearing assemblies for hybrid drill bits
US9353575B2 (en) 2011-11-15 2016-05-31 Baker Hughes Incorporated Hybrid drill bits having increased drilling efficiency
US9476259B2 (en) 2008-05-02 2016-10-25 Baker Hughes Incorporated System and method for leg retention on hybrid bits

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9708428D0 (en) * 1997-04-26 1997-06-18 Camco Int Uk Ltd Improvements in or relating to rotary drill bits
US6338390B1 (en) * 1999-01-12 2002-01-15 Baker Hughes Incorporated Method and apparatus for drilling a subterranean formation employing drill bit oscillation
AU1401101A (en) 1999-11-10 2001-06-06 Petroleum Research And Development N.V. Control method for use with a steerable drilling system
US8082134B2 (en) * 2000-03-13 2011-12-20 Smith International, Inc. Techniques for modeling/simulating, designing optimizing, and displaying hybrid drill bits
US7845435B2 (en) 2007-04-05 2010-12-07 Baker Hughes Incorporated Hybrid drill bit and method of drilling
US7841426B2 (en) 2007-04-05 2010-11-30 Baker Hughes Incorporated Hybrid drill bit with fixed cutters as the sole cutting elements in the axial center of the drill bit
US20100025119A1 (en) 2007-04-05 2010-02-04 Baker Hughes Incorporated Hybrid drill bit and method of using tsp or mosaic cutters on a hybrid bit
EP2222932B1 (en) 2007-11-16 2013-04-24 Baker Hughes Incorporated Hybrid drill bit and design method
US7819208B2 (en) * 2008-07-25 2010-10-26 Baker Hughes Incorporated Dynamically stable hybrid drill bit
US8948917B2 (en) 2008-10-29 2015-02-03 Baker Hughes Incorporated Systems and methods for robotic welding of drill bits
US8450637B2 (en) 2008-10-23 2013-05-28 Baker Hughes Incorporated Apparatus for automated application of hardfacing material to drill bits
US9439277B2 (en) 2008-10-23 2016-09-06 Baker Hughes Incorporated Robotically applied hardfacing with pre-heat
US8047307B2 (en) 2008-12-19 2011-11-01 Baker Hughes Incorporated Hybrid drill bit with secondary backup cutters positioned with high side rake angles
WO2010078131A2 (en) 2008-12-31 2010-07-08 Baker Hughes Incorporated Method and apparatus for automated application of hardfacing material to rolling cutters of hybrid-type earth boring drill bits, hybrid drill bits comprising such hardfaced steel-toothed cutting elements, and methods of use thereof
US9782857B2 (en) 2011-02-11 2017-10-10 Baker Hughes Incorporated Hybrid drill bit having increased service life
SG11201609528QA (en) 2014-05-23 2016-12-29 Baker Hughes Inc Hybrid bit with mechanically attached rolling cutter assembly
US11428050B2 (en) 2014-10-20 2022-08-30 Baker Hughes Holdings Llc Reverse circulation hybrid bit
US10557311B2 (en) 2015-07-17 2020-02-11 Halliburton Energy Services, Inc. Hybrid drill bit with counter-rotation cutters in center
US11795763B2 (en) 2020-06-11 2023-10-24 Schlumberger Technology Corporation Downhole tools having radially extendable elements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024855A (en) * 1959-07-06 1962-03-13 Jersey Prod Res Co Extensible drill bit
US3765493A (en) * 1971-12-01 1973-10-16 E Rosar Dual bit drilling tool
US4076087A (en) * 1976-06-14 1978-02-28 Vladimir Yakovlevich Chuply Hole reamer
US4478296A (en) * 1981-12-14 1984-10-23 Richman Jr Charles D Drill bit having multiple drill rod impact members

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024855A (en) * 1959-07-06 1962-03-13 Jersey Prod Res Co Extensible drill bit
US3765493A (en) * 1971-12-01 1973-10-16 E Rosar Dual bit drilling tool
US4076087A (en) * 1976-06-14 1978-02-28 Vladimir Yakovlevich Chuply Hole reamer
US4478296A (en) * 1981-12-14 1984-10-23 Richman Jr Charles D Drill bit having multiple drill rod impact members

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8678111B2 (en) 2007-11-16 2014-03-25 Baker Hughes Incorporated Hybrid drill bit and design method
US8356398B2 (en) 2008-05-02 2013-01-22 Baker Hughes Incorporated Modular hybrid drill bit
US9476259B2 (en) 2008-05-02 2016-10-25 Baker Hughes Incorporated System and method for leg retention on hybrid bits
US8141664B2 (en) 2009-03-03 2012-03-27 Baker Hughes Incorporated Hybrid drill bit with high bearing pin angles
US8056651B2 (en) 2009-04-28 2011-11-15 Baker Hughes Incorporated Adaptive control concept for hybrid PDC/roller cone bits
US8459378B2 (en) 2009-05-13 2013-06-11 Baker Hughes Incorporated Hybrid drill bit
US8336646B2 (en) 2009-06-18 2012-12-25 Baker Hughes Incorporated Hybrid bit with variable exposure
US8157026B2 (en) 2009-06-18 2012-04-17 Baker Hughes Incorporated Hybrid bit with variable exposure
US9004198B2 (en) 2009-09-16 2015-04-14 Baker Hughes Incorporated External, divorced PDC bearing assemblies for hybrid drill bits
US9556681B2 (en) 2009-09-16 2017-01-31 Baker Hughes Incorporated External, divorced PDC bearing assemblies for hybrid drill bits
US8448724B2 (en) 2009-10-06 2013-05-28 Baker Hughes Incorporated Hole opener with hybrid reaming section
US8347989B2 (en) 2009-10-06 2013-01-08 Baker Hughes Incorporated Hole opener with hybrid reaming section and method of making
US8191635B2 (en) 2009-10-06 2012-06-05 Baker Hughes Incorporated Hole opener with hybrid reaming section
US8950514B2 (en) 2010-06-29 2015-02-10 Baker Hughes Incorporated Drill bits with anti-tracking features
US8978786B2 (en) 2010-11-04 2015-03-17 Baker Hughes Incorporated System and method for adjusting roller cone profile on hybrid bit
US9353575B2 (en) 2011-11-15 2016-05-31 Baker Hughes Incorporated Hybrid drill bits having increased drilling efficiency

Also Published As

Publication number Publication date
EP0225101A2 (en) 1987-06-10
GB8627439D0 (en) 1986-12-17
AU6538886A (en) 1987-05-28
GB2183694A (en) 1987-06-10
GB8528894D0 (en) 1986-01-02

Similar Documents

Publication Publication Date Title
EP0225101A3 (en) Improvements in or relating to drill bits
CA2217056A1 (en) A surface controlled wellbore directional steering tool
EP0640743A3 (en) Load cells for sensing weight and torque on a drill bit while drilling a well bore.
CA2221068A1 (en) Drill bit for horizontal directional drilling of rock formations
CA2161874A1 (en) Drill bit and other downhole tools
CA2093041A1 (en) System and method for controlling drill bit usage and well plan
CA2140830A1 (en) Rock Bit Back Reaming Inserts
CA2030024A1 (en) Hydraulic drilling apparatus and method
EP0841462A3 (en) Downhole tool with at least one formation-engaging member
CA2131456A1 (en) Downhole tool for controlling the drilling course of a borehole
CA2327920A1 (en) Apparatus and method for simultaneous drilling and casing wellbores
CA2281976A1 (en) Combination mill and drill bit
CA2393754A1 (en) Drilling bit for drilling while running casing
CA2349631A1 (en) Cutting structure for roller cone drill bits
CA2179184A1 (en) Whipstock apparatus and methods of use
EP0874128A3 (en) Rotary drill bit having movable formation-engaging members
CA2151215A1 (en) Whipstock and Staged Sidetrack Mill
CA2281847A1 (en) Drilling assembly with reduced stick-slip tendency
EP0962620A3 (en) A two-stage drill bit
CA1114361A (en) Universal earth formation cutter
CA2387568A1 (en) Drill bit with eccentric body
EP0233038A3 (en) Down-the-hole-drill
US3743037A (en) Rig for rotary drilling of holes and shafts
US4235295A (en) Earth boring bit with renewable bearing surface
ITTO930417A0 (en) DRILLING TOOL FOR THE CONSTRUCTION OF LARGE DIAMETER PILES IN ROCK, VENTILATION WELLS AND OTHER EXCAVATION AND SIMILAR WORKS

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE FR LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE CH DE FR LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890322

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BARR, JOHN DENZIL

Inventor name: WARDLEY, MICHAEL THOMAS