US2320136A - Well drilling bit - Google Patents

Well drilling bit Download PDF

Info

Publication number
US2320136A
US2320136A US35894640A US2320136A US 2320136 A US2320136 A US 2320136A US 35894640 A US35894640 A US 35894640A US 2320136 A US2320136 A US 2320136A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
cutters
inner
drag
bit
roller
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
Application number
Inventor
Archer W Kammerer
Original Assignee
Archer W Kammerer
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
Grant date

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/08Roller bits

Description

y A. w. KAMMERER 2,320,136

WELL DRILLING BIT Filed Sept. 30, 1940 fig. 1. f)! 2. x

r' if ARcHER WKZMMERE Patented May 25, 1943 UNITED STATES PATENT OFFICE WELL panama BIT Archer W. Kammerer, Fullerton, Calif.

Application September 30, 1940, Serial No. 358,946

2 Claims.

This invention relates to earth boring tools, and more particularly to drilling bits used in the rotary drilling of oil, water, gas, sulphur and similar wells.

The present case is a continuation-in-part of my prior application entitled Well drilling bits, Serial No. 310,567, filed December 22, 1939.

In the application above referred to, there is disclosed a composite rotary drilling bit having side roller gauge or reaming cutters for removing the outer portions of formation material from the hole bottom and also intermediate drag cutters for removing the central portion of material from the bottom inside of the annular path traced by the side cutters. One of the features of invention in that case is the elevation of the bottom cutting edges of the drag cutters above the lowermost positions occupied by the teeth on the roller cutters, which not only inherently produces vertical drilling by the bit, but also causes very effective action of the drag cutters upon 7 both hard and soft formations.

While the elevation of the bottom cutting edges on the drag cutters is desirable, the extent to which they can be raised has heretofore been limited, since the inner tooth faces of the side roller cutters tend to rub against the inclined inner annular shoulder formed by their radial teeth in the bottom of the bore hole being produced. These inner tooth faces have very little effect in removing the shouldered formation pertion, merely riding on it as the bit rotates and preventing adequate penetration of the drag cutters into the formation Accordingly, it is an object of the present invention to provide a rotary drill bit which permits its central cutters to be elevated above the side cutters to a greater extent than heretofore, improving the inherent tendency of the bit to drill a vertical hole. In the specific example shown in the drawing, this is accomplished by including reaming teeth on the inner faces of the side cutters, so that the inner annular shoulder on the bottom of the hole is removed by a ream ing action and does not retard progress of the bit. Instead, the rate of penetration in the formation is increased.

A further object of the invention is to provide an improved sturdy bearing construction for the roller cutters of a drill bit.

Yet another object of the invention is to provide an improved bearing construction for the side rollers of a drill bit, the bearing construction being held firmly in assembled relationship by attachment to the cross cutters of the bit.

This invention possesses many other advantages and has other objects which will become apparent from a consideration of I the embodiment shown in the drawing accompanying and forming part of the present specification. This form will now be described in detail to illustrate the general principles of the invention, but it is to be understood that such detailed description is not to be taken in a limited sense, since the invention is best defined in the claims appended hereto. 1

Referring to the drawing:

Figure 1 is an elevational view of a drill bit, parts being removed for the purposes of clarity, and other portions being shown in section;

Figure 2 is a longitudinal section taken generally along the line 2-2 of Figure 1; and

Figure 3 is an enlarged longitudinal section through one of the side roller cutters and its bearing support.

As seen in the drawing, the drill bit includes a main body or shank 10 having the usual threaded, tapered pin it at its upper end for attaching the bit to a tubular string of drill pipe (not shown),

by means ofrwhich the bit is rotatable from the' surface of the bore hole, in a well-known manner. Depending downwardly from the main body is a pair of opposed legs 92, I2 rotatably carrying side or gauged tooth cutters l3, l3 whose purpose is to remove the outer portions of the formation material and maintain the hole to its required diameter. These cutters are each rotatably mounted on a disassemblable anti-friction bearing it to permit their replacement upon becoming worn.

The formation material within the annulus cut by the side rollers l3, I3 is removed by cross cutters of the drag or blade type. These cutters form part of an assembly 15, being preferably rigid or integral-with respect to each other, and consisting of outer drag cutters I6, I6 and inner drag cutters I1, I! disposed at an angle to the former; The upper portion Ila, of each inner cutter is preferably bevelled to clear the adjacent side cutter I3 and to lie closely adjacent the inner portions of the supporting bearing I l.

The drag cutter assembly I5 is securely attached to the main body H) of the bit by being welded to the legs [8, l8 depending from the body. These legs are positioned between the side cutter legs l2, l2 so that the central plane of the drag assembly 15 is approximately at right angles to the axes of rotation of the side cutters I 3, I3.

As described in my above referred to application, the outer drag cutters l6, l6 cut an annulus on the bottom of the hole with their outermost end portions preferably tracing a path having a radius at least equal to and preferably slightly greater than the radius of the inner circumference of the annul s of material removed by the side roller cutters l3, l3. Similarly. the central portion of the formation material is removed by the inner drag cutters l1, I! having a radius at least equal to and preferably slightly greater than the radius of the inner circle traced by the outer drag cutters l6, Hi. It is to be noted further that the lowermost radial toothed portions IQ of the side roller cutters lead or are positioned ahead of the bottoms Ilia, 16a of the outer drag cutters l8, IS in a downward vertical direction by a material extent, and that the lower contacting portions llb, 11b of the outer drag cutters l1, I! also lead the bottom contacting cutter portions in, "5a of the inner drag cutters. This arrangement is not only described in my application Serial No. 310,567, filed December 22, 1939, but is also claimed therein.

As disclosed in my prior application, only radial teeth l9 are supplied on the side roller cutters which are rotatable about downwardly and inwardly inclined axes. While very efiective in removing the outer annulus of formation material, the rotation of the cutters about such axes causes their inner faces 20 and also the inner faces of their teeth to merely rub against the downwardly and outwardly inclined shoulder 2| formed in the bottom of the hole as a result of the side roller teeth l9 leading the lower cutting edges lBa, lBa of the outer drag cutters. This frusto-conical shoulder is represented by the dotted line 2| in "Figure 3, which also indicates the position of the inner tooth face construction employed in the prior side roller cutters.

The lack of any adequate means on the side roller cutters for effectively removing this annular shoulder 2| has heretofore necessitated the lowering of the lower cutting edges l6a, I60. on the drag cutters, so that they might operate upon the material within the annulus formed by the side'roller cutters and prevent the production to any great extent of the shoulder 2i referred to. Although the teeth H! on the side roller cutters I3, l3 still led the lower drag cutting edges lfia, Ilia, the extent of their advance was limited, placing limitations upon the performance of the tool.

The present invention overcomes this difficulty by providing a set of inner, axially extending, reaming teeth 22 on each roller cutter l3. These axial teeth 22 merge smoothly into the radial teeth l9, there preferably being a bevelled, intermediate portion 23 connecting the two.

With the employment of the axial' teeth 22 extending inwardly of each roller cutter i3, the inclined shoulder that would be formed as a result of advancing the radial side cutter teeth 13 over the bottom edges llia, Ilia. of the drag cutters fails to impede progress of the bit, since the inner reaming teeth 22, 23 will effectively operate upon this inclined shoulder and produce-speedy removal of the formation. Since the penetration of the side roller teeth in the bottom of the hole is not impeded, it is no longer essential for the drag cutters l6, IE to be positioned low enough to prevent material production of the shoulder. For this reason, the lower cutting edges ltia, Ilia of the drag cutters can be elevated to a greater extent than heretofore, increasing the inherent tendency of the bit to make progress in a truly vertical direction. It is to be noted further that the employment of the inner set of reaming teeth 22, 23 also permits these drag cutters l6, ii to be decreased in width, since formation material formerly removed by their outermargins will now be removed by the inner axial teeth 22, 23.

The disposition of the inner set of drag cutters l1, II at an angle to the outer set IS, It enables a simple and sturdy bearing structure H to be employed in connection with each side roller cutter l3. Specifically, this bearing structure includes a threaded pin 24 preferably integral with a depending leg I2 and extending downwardly and inwardly therefrom, the axis of this threaded pin 24 being at right angles to the inclined inner surface 25 of the depending leg II. An interlorly threaded bearing sleeve 26 is screwed on the threaded pin 24 until its shoulder 21 abuts the inclined surface or face 25 of the leg l2. The exterior of the sleeve 26 is formed with a roller raceway 28 to receive the roller bearing members 29, and also with a ball raceway 30 to receive the ball bearing members 3i. The inner surfaces of each side roller cutter l3 are formed with roller and ball raceways 32, 33 opposed, respectively, to the roller and ball raceways 28, 30 in the sleeve 26, so that radial loadings imposed on the cutter i3 are transmitted between it and the sleeve 26 through both the roller bearings 29 and the ball bearings 31, while axial loadings are transmitted primarily through theball bearings 3|, which also serve to hold the cutter l3 and the various bearing elements 29, 3| in their proper positions on the raceways.

For the purpose of preventing disassembly of the side. roller bearing structure l4 while the drilling bit is in a well and to strengthen the entire bit, a threaded plug 34 is screwed into the sleeve 26 until its head 35 abuts the inner end 26a of the sleeve. Removal of this plug 34, and the consequent removal of the sleeve 26 from the threaded pin 24 is prevented by securing the outer ends of the inner drag cutters l1, H to the plug heads 35, as by means of welding material 36. This mode of attaching the plugs 34 to the inner cutters I1, I! not only offers assurance that each bearing structure [4 will be held in assembly, but also provides an additional support for the side cutters l3, I3,'eflectively tying the depending legs I2, l2 for the roller cutters together through the bearing supports l4, l4 and the inner drag cutters ll, l1.

One possible manner of assembling the side roller cutters l3, I3 on the bit consists in first. placing the roller bearings 29 in the sleeve raceway 28, and then sliding the cutter l3 over these rollers with its roller raceway 32 properly contacting them. The balls 3| are then inserted between their respective raceways 30, 33 from the threaded interior of the sleeve 26 through the hole 31 establishing communication between it and its ball raceway 30. After a sufficient number of balls has been inserted in place, a plug 38 is placed in the hole 31 from the interior of the sleeve 26 to prevent loss of the balls. This plug 38 has an outer curved surface to conform with the curvature of the raceway 30 and insure its continuity over its entire circumference. If desired, the inner end of the plug 38 may be threaded for cooperation with the threads on the plug 34. The sub-assembly of cutter l3, sleeve 26, rollers 29 and balls 3| is then mounted on the bit by threading the sleeve 26 on the pin 23 until its shoulder 21 abuts the inclined face 25 on the leg l2. threaded into the sleeve to its fullest extent. Following the placing of both roller cutters l3,

The plug 34 may then be I IS on the bit body III, the drag assembly I5 is' inserted between the other pair oi. depending legs threaded in the inner end of each sleeve, a second pair of legs depending from said body between sald first-mentioned pair, a drag assembly secured to said second pair of legs and having inner and outer cutters disposed at an angle to each other, said inner cutters being secured to said plugs to prevent their rotation.

2. A drill bit, including a main body having a pair of opposed depending legs, a pin extendthe inclined bearing pin 24. All worn parts can said pins.

ing inwardly and downwardly from each leg, a bearing sleeve secured on each pin and abutting its associated leg, a side roller cutter rotatably mounted on each sleeve, a second pair of legs depending from said body between said firstmentioned pair, a drag assembly secured to said second pair of legs and having inner and outer cutters disposed at an angle to each other, and means for securing said inner cutters to said bearing sleeves to prevent their removal from ARCHER W. KAMMERER-

US2320136A 1940-09-30 1940-09-30 Well drilling bit Expired - Lifetime US2320136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2320136A US2320136A (en) 1940-09-30 1940-09-30 Well drilling bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2320136A US2320136A (en) 1940-09-30 1940-09-30 Well drilling bit

Publications (1)

Publication Number Publication Date
US2320136A true US2320136A (en) 1943-05-25

Family

ID=23411677

Family Applications (1)

Application Number Title Priority Date Filing Date
US2320136A Expired - Lifetime US2320136A (en) 1940-09-30 1940-09-30 Well drilling bit

Country Status (1)

Country Link
US (1) US2320136A (en)

Cited By (104)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661931A (en) * 1950-12-04 1953-12-08 Security Engineering Division Hydraulic rotary rock bit
US2719026A (en) * 1952-04-28 1955-09-27 Reed Roller Bit Co Earth boring drill
US2833521A (en) * 1954-09-23 1958-05-06 Ole K Olsen Earth boring tools
US2901223A (en) * 1955-11-30 1959-08-25 Hughes Tool Co Earth boring drill
US3075592A (en) * 1960-05-31 1963-01-29 Jersey Prod Res Co Drilling device
US3269469A (en) * 1964-01-10 1966-08-30 Hughes Tool Co Solid head rotary-percussion bit with rolling cutters
DE3314583A1 (en) * 1982-07-20 1984-02-09 Sumitomo Metal Mining Co Drilling bit
US7198119B1 (en) 2005-11-21 2007-04-03 Hall David R Hydraulic drill bit assembly
US20070114066A1 (en) * 2005-11-21 2007-05-24 Hall David R A Drill Bit Assembly Adapted to Provide Power Downhole
US20070114071A1 (en) * 2005-11-21 2007-05-24 Hall David R Rotary Bit with an Indenting Member
US20070114062A1 (en) * 2005-11-21 2007-05-24 Hall David R Drill Bit Assembly with a Logging Device
US20070119630A1 (en) * 2005-11-21 2007-05-31 Hall David R Jack Element Adapted to Rotate Independent of a Drill Bit
US20070125580A1 (en) * 2005-11-21 2007-06-07 Hall David R Jet Arrangement for a Downhole Drill Bit
US20070221412A1 (en) * 2005-11-21 2007-09-27 Hall David R Rotary Valve for a Jack Hammer
US20070221408A1 (en) * 2005-11-21 2007-09-27 Hall David R Drilling at a Resonant Frequency
US20070221406A1 (en) * 2006-03-24 2007-09-27 Hall David R Jack Element for a Drill Bit
US20070229304A1 (en) * 2006-03-23 2007-10-04 Hall David R Drill Bit with an Electrically Isolated Transmitter
US20070229232A1 (en) * 2006-03-23 2007-10-04 Hall David R Drill Bit Transducer Device
US20070272443A1 (en) * 2005-11-21 2007-11-29 Hall David R Downhole Steering
US20080048484A1 (en) * 2006-08-11 2008-02-28 Hall David R Shank for an Attack Tool
US20080087473A1 (en) * 2006-10-13 2008-04-17 Hall David R Percussive Drill Bit
US20080099243A1 (en) * 2006-10-27 2008-05-01 Hall David R Method of Assembling a Drill Bit with a Jack Element
US20080142263A1 (en) * 2006-03-23 2008-06-19 Hall David R Downhole Valve Mechanism
US7392857B1 (en) 2007-01-03 2008-07-01 Hall David R Apparatus and method for vibrating a drill bit
US20080156541A1 (en) * 2005-12-22 2008-07-03 Hall David R Downhole Hammer Assembly
US20080173482A1 (en) * 2005-11-21 2008-07-24 Hall David R Drill Bit
US7419018B2 (en) 2006-11-01 2008-09-02 Hall David R Cam assembly in a downhole component
US7419016B2 (en) 2006-03-23 2008-09-02 Hall David R Bi-center drill bit
US20080296015A1 (en) * 2007-06-04 2008-12-04 Hall David R Clutch for a Jack Element
US20080302572A1 (en) * 2005-11-21 2008-12-11 Hall David R Drill Bit Porting System
US20080314647A1 (en) * 2007-06-22 2008-12-25 Hall David R Rotary Drag Bit with Pointed Cutting Elements
US20090000828A1 (en) * 2006-08-11 2009-01-01 Hall David R Roof Bolt Bit
US7484576B2 (en) 2006-03-23 2009-02-03 Hall David R Jack element in communication with an electric motor and or generator
US20090057016A1 (en) * 2005-11-21 2009-03-05 Hall David R Downhole Turbine
US20090065251A1 (en) * 2007-09-06 2009-03-12 Hall David R Downhole Jack Assembly Sensor
US20090158897A1 (en) * 2005-11-21 2009-06-25 Hall David R Jack Element with a Stop-off
US20090183919A1 (en) * 2005-11-21 2009-07-23 Hall David R Downhole Percussive Tool with Alternating Pressure Differentials
US20090183920A1 (en) * 2006-03-23 2009-07-23 Hall David R Downhole Percussive Tool with Alternating Pressure Differentials
US7600586B2 (en) 2006-12-15 2009-10-13 Hall David R System for steering a drill string
US20090255733A1 (en) * 2005-11-21 2009-10-15 Hall David R Lead the Bit Rotary Steerable System
US20090272582A1 (en) * 2008-05-02 2009-11-05 Baker Hughes Incorporated Modular hybrid drill bit
US20090273224A1 (en) * 2008-04-30 2009-11-05 Hall David R Layered polycrystalline diamond
US7617886B2 (en) 2005-11-21 2009-11-17 Hall David R Fluid-actuated hammer bit
US20090294182A1 (en) * 2006-08-11 2009-12-03 Hall David R Degradation Assembly
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
US20100059289A1 (en) * 2006-08-11 2010-03-11 Hall David R Cutting Element with Low Metal Concentration
US7694756B2 (en) 2006-03-23 2010-04-13 Hall David R Indenting member for a drill bit
US20100089648A1 (en) * 2006-08-11 2010-04-15 Hall David R Fixed Bladed Bit that Shifts Weight between an Indenter and Cutting Elements
US20100155146A1 (en) * 2008-12-19 2010-06-24 Baker Hughes Incorporated Hybrid drill bit with high pilot-to-journal diameter ratio
USD620510S1 (en) 2006-03-23 2010-07-27 Schlumberger Technology Corporation Drill bit
US20100224417A1 (en) * 2009-03-03 2010-09-09 Baker Hughes Incorporated Hybrid drill bit with high bearing pin angles
US20100270085A1 (en) * 2009-04-28 2010-10-28 Baker Hughes Incorporated Adaptive control concept for hybrid pdc/roller cone bits
US20100288561A1 (en) * 2009-05-13 2010-11-18 Baker Hughes Incorporated Hybrid drill bit
US20100320001A1 (en) * 2009-06-18 2010-12-23 Baker Hughes Incorporated Hybrid bit with variable exposure
US20100326740A1 (en) * 2009-06-26 2010-12-30 Hall David R Bonded Assembly Having Low Residual Stress
US20110042150A1 (en) * 2006-08-11 2011-02-24 Hall David R Roof Mining Drill Bit
US20110048811A1 (en) * 2005-11-21 2011-03-03 Schlumberger Technology Corporation Drill bit with a retained jack element
US7900720B2 (en) 2006-01-18 2011-03-08 Schlumberger Technology Corporation Downhole drive shaft connection
US20110079440A1 (en) * 2009-10-06 2011-04-07 Baker Hughes Incorporated Hole opener with hybrid reaming section
US20110079444A1 (en) * 2009-09-16 2011-04-07 Baker Hughes Incorporated External, Divorced PDC Bearing Assemblies for Hybrid Drill Bits
US20110079443A1 (en) * 2009-10-06 2011-04-07 Baker Hughes Incorporated Hole opener with hybrid reaming section
US7967083B2 (en) 2007-09-06 2011-06-28 Schlumberger Technology Corporation Sensor for determining a position of a jack element
US7967082B2 (en) 2005-11-21 2011-06-28 Schlumberger Technology Corporation Downhole mechanism
US20110180324A1 (en) * 2006-08-11 2011-07-28 Hall David R Sensor on a Formation Engaging Member of a Drill Bit
US20110180325A1 (en) * 2006-08-11 2011-07-28 Hall David R Sensor on a Formation Engaging Member of a Drill Bit
US8011457B2 (en) 2006-03-23 2011-09-06 Schlumberger Technology Corporation Downhole hammer assembly
US8201892B2 (en) 2006-08-11 2012-06-19 Hall David R Holder assembly
US8215420B2 (en) 2006-08-11 2012-07-10 Schlumberger Technology Corporation Thermally stable pointed diamond with increased impact resistance
US8267196B2 (en) 2005-11-21 2012-09-18 Schlumberger Technology Corporation Flow guide actuation
US8292372B2 (en) 2007-12-21 2012-10-23 Hall David R Retention for holder shank
US8297378B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Turbine driven hammer that oscillates at a constant frequency
US8322796B2 (en) 2009-04-16 2012-12-04 Schlumberger Technology Corporation Seal with contact element for pick shield
US8333254B2 (en) 2010-10-01 2012-12-18 Hall David R Steering mechanism with a ring disposed about an outer diameter of a drill bit and method for drilling
US8342611B2 (en) 2007-05-15 2013-01-01 Schlumberger Technology Corporation Spring loaded pick
US8342266B2 (en) 2011-03-15 2013-01-01 Hall David R Timed steering nozzle on a downhole drill bit
USD674422S1 (en) 2007-02-12 2013-01-15 Hall David R Drill bit with a pointed cutting element and a shearing cutting element
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
USD678368S1 (en) 2007-02-12 2013-03-19 David R. Hall Drill bit with a pointed cutting element
US8408336B2 (en) 2005-11-21 2013-04-02 Schlumberger Technology Corporation Flow guide actuation
CN103015899A (en) * 2012-12-19 2013-04-03 江汉石油钻头股份有限公司 Mixed drilling bit with enhanced core part cutting function
US8418784B2 (en) 2010-05-11 2013-04-16 David R. Hall Central cutting region of a drilling head assembly
US8522897B2 (en) 2005-11-21 2013-09-03 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US8528664B2 (en) 2005-11-21 2013-09-10 Schlumberger Technology Corporation Downhole mechanism
US8550190B2 (en) 2010-04-01 2013-10-08 David R. Hall Inner bit disposed within an outer bit
US8567532B2 (en) 2006-08-11 2013-10-29 Schlumberger Technology Corporation Cutting element attached to downhole fixed bladed bit at a positive rake angle
US8590644B2 (en) 2006-08-11 2013-11-26 Schlumberger Technology Corporation Downhole drill bit
US8622155B2 (en) 2006-08-11 2014-01-07 Schlumberger Technology Corporation Pointed diamond working ends on a shear bit
US8678111B2 (en) 2007-11-16 2014-03-25 Baker Hughes Incorporated Hybrid drill bit and design method
US8701799B2 (en) 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
US8714285B2 (en) 2006-08-11 2014-05-06 Schlumberger Technology Corporation Method for drilling with a fixed bladed bit
US8820440B2 (en) 2010-10-01 2014-09-02 David R. Hall Drill bit steering assembly
US8839888B2 (en) 2010-04-23 2014-09-23 Schlumberger Technology Corporation Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
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
US9051795B2 (en) 2006-08-11 2015-06-09 Schlumberger Technology Corporation Downhole drill bit
US9068410B2 (en) 2006-10-26 2015-06-30 Schlumberger Technology Corporation Dense diamond body
US9316061B2 (en) 2006-08-11 2016-04-19 David R. Hall High impact resistant degradation element
US9353575B2 (en) * 2011-11-15 2016-05-31 Baker Hughes Incorporated Hybrid drill bits having increased drilling efficiency
US9366089B2 (en) 2006-08-11 2016-06-14 Schlumberger Technology Corporation Cutting element attached to downhole fixed bladed bit at a positive rake angle
US9476259B2 (en) 2008-05-02 2016-10-25 Baker Hughes Incorporated System and method for leg retention on hybrid bits
US9782857B2 (en) 2011-02-11 2017-10-10 Baker Hughes Incorporated Hybrid drill bit having increased service life
US9915102B2 (en) 2006-08-11 2018-03-13 Schlumberger Technology Corporation Pointed working ends on a bit
US10029391B2 (en) 2006-10-26 2018-07-24 Schlumberger Technology Corporation High impact resistant tool with an apex width between a first and second transitions
US10107039B2 (en) 2014-05-23 2018-10-23 Baker Hughes Incorporated Hybrid bit with mechanically attached roller cone elements

Cited By (169)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661931A (en) * 1950-12-04 1953-12-08 Security Engineering Division Hydraulic rotary rock bit
US2719026A (en) * 1952-04-28 1955-09-27 Reed Roller Bit Co Earth boring drill
US2833521A (en) * 1954-09-23 1958-05-06 Ole K Olsen Earth boring tools
US2901223A (en) * 1955-11-30 1959-08-25 Hughes Tool Co Earth boring drill
US3075592A (en) * 1960-05-31 1963-01-29 Jersey Prod Res Co Drilling device
US3269469A (en) * 1964-01-10 1966-08-30 Hughes Tool Co Solid head rotary-percussion bit with rolling cutters
DE3314583A1 (en) * 1982-07-20 1984-02-09 Sumitomo Metal Mining Co Drilling bit
US8528664B2 (en) 2005-11-21 2013-09-10 Schlumberger Technology Corporation Downhole mechanism
US20070114066A1 (en) * 2005-11-21 2007-05-24 Hall David R A Drill Bit Assembly Adapted to Provide Power Downhole
US20070114065A1 (en) * 2005-11-21 2007-05-24 Hall David R Drill Bit Assembly
US20070114071A1 (en) * 2005-11-21 2007-05-24 Hall David R Rotary Bit with an Indenting Member
US20070114062A1 (en) * 2005-11-21 2007-05-24 Hall David R Drill Bit Assembly with a Logging Device
US20070114067A1 (en) * 2005-11-21 2007-05-24 Hall David R Drill Bit Assembly with an Indenting Member
US20070114061A1 (en) * 2005-11-21 2007-05-24 Hall David R Drill Bit Assembly with a Probe
US20070119630A1 (en) * 2005-11-21 2007-05-31 Hall David R Jack Element Adapted to Rotate Independent of a Drill Bit
US7225886B1 (en) 2005-11-21 2007-06-05 Hall David R Drill bit assembly with an indenting member
US20070125580A1 (en) * 2005-11-21 2007-06-07 Hall David R Jet Arrangement for a Downhole Drill Bit
US7258179B2 (en) 2005-11-21 2007-08-21 Hall David R Rotary bit with an indenting member
US7270196B2 (en) 2005-11-21 2007-09-18 Hall David R Drill bit assembly
US20070221412A1 (en) * 2005-11-21 2007-09-27 Hall David R Rotary Valve for a Jack Hammer
US20070221408A1 (en) * 2005-11-21 2007-09-27 Hall David R Drilling at a Resonant Frequency
US7198119B1 (en) 2005-11-21 2007-04-03 Hall David R Hydraulic drill bit assembly
US7641002B2 (en) 2005-11-21 2010-01-05 Hall David R Drill bit
US8408336B2 (en) 2005-11-21 2013-04-02 Schlumberger Technology Corporation Flow guide actuation
US20070272443A1 (en) * 2005-11-21 2007-11-29 Hall David R Downhole Steering
US7328755B2 (en) 2005-11-21 2008-02-12 Hall David R Hydraulic drill bit assembly
US8020471B2 (en) 2005-11-21 2011-09-20 Schlumberger Technology Corporation Method for manufacturing a drill bit
US7337858B2 (en) 2005-11-21 2008-03-04 Hall David R Drill bit assembly adapted to provide power downhole
US7617886B2 (en) 2005-11-21 2009-11-17 Hall David R Fluid-actuated hammer bit
US7967082B2 (en) 2005-11-21 2011-06-28 Schlumberger Technology Corporation Downhole mechanism
US20090158897A1 (en) * 2005-11-21 2009-06-25 Hall David R Jack Element with a Stop-off
US8205688B2 (en) 2005-11-21 2012-06-26 Hall David R Lead the bit rotary steerable system
US20090255733A1 (en) * 2005-11-21 2009-10-15 Hall David R Lead the Bit Rotary Steerable System
US20090183919A1 (en) * 2005-11-21 2009-07-23 Hall David R Downhole Percussive Tool with Alternating Pressure Differentials
US7398837B2 (en) 2005-11-21 2008-07-15 Hall David R Drill bit assembly with a logging device
US20080173482A1 (en) * 2005-11-21 2008-07-24 Hall David R Drill Bit
US8267196B2 (en) 2005-11-21 2012-09-18 Schlumberger Technology Corporation Flow guide actuation
US8297378B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Turbine driven hammer that oscillates at a constant frequency
US7424922B2 (en) 2005-11-21 2008-09-16 Hall David R Rotary valve for a jack hammer
US7426968B2 (en) 2005-11-21 2008-09-23 Hall David R Drill bit assembly with a probe
US8950517B2 (en) 2005-11-21 2015-02-10 Schlumberger Technology Corporation Drill bit with a retained jack element
US20080302572A1 (en) * 2005-11-21 2008-12-11 Hall David R Drill Bit Porting System
US8281882B2 (en) 2005-11-21 2012-10-09 Schlumberger Technology Corporation Jack element for a drill bit
US8297375B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Downhole turbine
US7591327B2 (en) 2005-11-21 2009-09-22 Hall David R Drilling at a resonant frequency
US7497279B2 (en) 2005-11-21 2009-03-03 Hall David R Jack element adapted to rotate independent of a drill bit
US20090057016A1 (en) * 2005-11-21 2009-03-05 Hall David R Downhole Turbine
US8522897B2 (en) 2005-11-21 2013-09-03 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US20110048811A1 (en) * 2005-11-21 2011-03-03 Schlumberger Technology Corporation Drill bit with a retained jack element
US7533737B2 (en) 2005-11-21 2009-05-19 Hall David R Jet arrangement for a downhole drill bit
US8225883B2 (en) 2005-11-21 2012-07-24 Schlumberger Technology Corporation Downhole percussive tool with alternating pressure differentials
US7559379B2 (en) 2005-11-21 2009-07-14 Hall David R Downhole steering
US20080156541A1 (en) * 2005-12-22 2008-07-03 Hall David R Downhole Hammer Assembly
US7900720B2 (en) 2006-01-18 2011-03-08 Schlumberger Technology Corporation Downhole drive shaft connection
US7694756B2 (en) 2006-03-23 2010-04-13 Hall David R Indenting member for a drill bit
US7484576B2 (en) 2006-03-23 2009-02-03 Hall David R Jack element in communication with an electric motor and or generator
US7419016B2 (en) 2006-03-23 2008-09-02 Hall David R Bi-center drill bit
US20090183920A1 (en) * 2006-03-23 2009-07-23 Hall David R Downhole Percussive Tool with Alternating Pressure Differentials
US20080142263A1 (en) * 2006-03-23 2008-06-19 Hall David R Downhole Valve Mechanism
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US8011457B2 (en) 2006-03-23 2011-09-06 Schlumberger Technology Corporation Downhole hammer assembly
US20070229232A1 (en) * 2006-03-23 2007-10-04 Hall David R Drill Bit Transducer Device
US20070229304A1 (en) * 2006-03-23 2007-10-04 Hall David R Drill Bit with an Electrically Isolated Transmitter
USD620510S1 (en) 2006-03-23 2010-07-27 Schlumberger Technology Corporation Drill bit
US7661487B2 (en) 2006-03-23 2010-02-16 Hall David R Downhole percussive tool with alternating pressure differentials
US7762353B2 (en) 2006-03-23 2010-07-27 Schlumberger Technology Corporation Downhole valve mechanism
US8316964B2 (en) 2006-03-23 2012-11-27 Schlumberger Technology Corporation Drill bit transducer device
US8130117B2 (en) 2006-03-23 2012-03-06 Schlumberger Technology Corporation Drill bit with an electrically isolated transmitter
US7571780B2 (en) 2006-03-24 2009-08-11 Hall David R Jack element for a drill bit
US20070221406A1 (en) * 2006-03-24 2007-09-27 Hall David R Jack Element for a Drill Bit
US8567532B2 (en) 2006-08-11 2013-10-29 Schlumberger Technology Corporation Cutting element attached to downhole fixed bladed bit at a positive rake angle
US8240404B2 (en) 2006-08-11 2012-08-14 Hall David R Roof bolt bit
US8191651B2 (en) 2006-08-11 2012-06-05 Hall David R Sensor on a formation engaging member of a drill bit
US8449040B2 (en) 2006-08-11 2013-05-28 David R. Hall Shank for an attack tool
US20090294182A1 (en) * 2006-08-11 2009-12-03 Hall David R Degradation Assembly
US8573331B2 (en) 2006-08-11 2013-11-05 David R. Hall Roof mining drill bit
US8590644B2 (en) 2006-08-11 2013-11-26 Schlumberger Technology Corporation Downhole drill bit
US8596381B2 (en) 2006-08-11 2013-12-03 David R. Hall Sensor on a formation engaging member of a drill bit
US20110042150A1 (en) * 2006-08-11 2011-02-24 Hall David R Roof Mining Drill Bit
US20100059289A1 (en) * 2006-08-11 2010-03-11 Hall David R Cutting Element with Low Metal Concentration
US8616305B2 (en) 2006-08-11 2013-12-31 Schlumberger Technology Corporation Fixed bladed bit that shifts weight between an indenter and cutting elements
US20090000828A1 (en) * 2006-08-11 2009-01-01 Hall David R Roof Bolt Bit
US8714285B2 (en) 2006-08-11 2014-05-06 Schlumberger Technology Corporation Method for drilling with a fixed bladed bit
US9051795B2 (en) 2006-08-11 2015-06-09 Schlumberger Technology Corporation Downhole drill bit
US20100089648A1 (en) * 2006-08-11 2010-04-15 Hall David R Fixed Bladed Bit that Shifts Weight between an Indenter and Cutting Elements
US9316061B2 (en) 2006-08-11 2016-04-19 David R. Hall High impact resistant degradation element
US8215420B2 (en) 2006-08-11 2012-07-10 Schlumberger Technology Corporation Thermally stable pointed diamond with increased impact resistance
US9366089B2 (en) 2006-08-11 2016-06-14 Schlumberger Technology Corporation Cutting element attached to downhole fixed bladed bit at a positive rake angle
US8201892B2 (en) 2006-08-11 2012-06-19 Hall David R Holder assembly
US9708856B2 (en) 2006-08-11 2017-07-18 Smith International, Inc. Downhole drill bit
US20110180324A1 (en) * 2006-08-11 2011-07-28 Hall David R Sensor on a Formation Engaging Member of a Drill Bit
US20110180325A1 (en) * 2006-08-11 2011-07-28 Hall David R Sensor on a Formation Engaging Member of a Drill Bit
US9915102B2 (en) 2006-08-11 2018-03-13 Schlumberger Technology Corporation Pointed working ends on a bit
US20080048484A1 (en) * 2006-08-11 2008-02-28 Hall David R Shank for an Attack Tool
US8622155B2 (en) 2006-08-11 2014-01-07 Schlumberger Technology Corporation Pointed diamond working ends on a shear bit
US8434573B2 (en) 2006-08-11 2013-05-07 Schlumberger Technology Corporation Degradation assembly
US20080087473A1 (en) * 2006-10-13 2008-04-17 Hall David R Percussive Drill Bit
US7527110B2 (en) 2006-10-13 2009-05-05 Hall David R Percussive drill bit
US10029391B2 (en) 2006-10-26 2018-07-24 Schlumberger Technology Corporation High impact resistant tool with an apex width between a first and second transitions
US9068410B2 (en) 2006-10-26 2015-06-30 Schlumberger Technology Corporation Dense diamond body
US7954401B2 (en) 2006-10-27 2011-06-07 Schlumberger Technology Corporation Method of assembling a drill bit with a jack element
US20080099243A1 (en) * 2006-10-27 2008-05-01 Hall David R Method of Assembling a Drill Bit with a Jack Element
US7419018B2 (en) 2006-11-01 2008-09-02 Hall David R Cam assembly in a downhole component
US7600586B2 (en) 2006-12-15 2009-10-13 Hall David R System for steering a drill string
US7392857B1 (en) 2007-01-03 2008-07-01 Hall David R Apparatus and method for vibrating a drill bit
US20080156536A1 (en) * 2007-01-03 2008-07-03 Hall David R Apparatus and Method for Vibrating a Drill Bit
USD674422S1 (en) 2007-02-12 2013-01-15 Hall David R Drill bit with a pointed cutting element and a shearing cutting element
USD678368S1 (en) 2007-02-12 2013-03-19 David R. Hall Drill bit with a pointed cutting element
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
US8342611B2 (en) 2007-05-15 2013-01-01 Schlumberger Technology Corporation Spring loaded pick
US7866416B2 (en) 2007-06-04 2011-01-11 Schlumberger Technology Corporation Clutch for a jack element
US8307919B2 (en) 2007-06-04 2012-11-13 Schlumberger Technology Corporation Clutch for a jack element
US20080296015A1 (en) * 2007-06-04 2008-12-04 Hall David R Clutch for a Jack Element
US8122980B2 (en) 2007-06-22 2012-02-28 Schlumberger Technology Corporation Rotary drag bit with pointed cutting elements
US20080314647A1 (en) * 2007-06-22 2008-12-25 Hall David R Rotary Drag Bit with Pointed Cutting Elements
US7721826B2 (en) 2007-09-06 2010-05-25 Schlumberger Technology Corporation Downhole jack assembly sensor
US7967083B2 (en) 2007-09-06 2011-06-28 Schlumberger Technology Corporation Sensor for determining a position of a jack element
US20090065251A1 (en) * 2007-09-06 2009-03-12 Hall David R Downhole Jack Assembly Sensor
US8499857B2 (en) 2007-09-06 2013-08-06 Schlumberger Technology Corporation Downhole jack assembly sensor
US8678111B2 (en) 2007-11-16 2014-03-25 Baker Hughes Incorporated Hybrid drill bit and design method
US8292372B2 (en) 2007-12-21 2012-10-23 Hall David R Retention for holder shank
US8931854B2 (en) 2008-04-30 2015-01-13 Schlumberger Technology Corporation Layered polycrystalline diamond
US20090273224A1 (en) * 2008-04-30 2009-11-05 Hall David R Layered polycrystalline diamond
US8540037B2 (en) 2008-04-30 2013-09-24 Schlumberger Technology Corporation Layered polycrystalline diamond
US20110120269A1 (en) * 2008-05-02 2011-05-26 Baker Hughes Incorporated Modular hybrid drill bit
US20090272582A1 (en) * 2008-05-02 2009-11-05 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
US8356398B2 (en) 2008-05-02 2013-01-22 Baker Hughes Incorporated Modular hybrid drill bit
US20100155146A1 (en) * 2008-12-19 2010-06-24 Baker Hughes Incorporated Hybrid drill bit with high pilot-to-journal diameter ratio
US8141664B2 (en) * 2009-03-03 2012-03-27 Baker Hughes Incorporated Hybrid drill bit with high bearing pin angles
US20100224417A1 (en) * 2009-03-03 2010-09-09 Baker Hughes Incorporated Hybrid drill bit with high bearing pin angles
US8322796B2 (en) 2009-04-16 2012-12-04 Schlumberger Technology Corporation Seal with contact element for pick shield
US20100270085A1 (en) * 2009-04-28 2010-10-28 Baker Hughes Incorporated Adaptive control concept for hybrid pdc/roller cone bits
US8056651B2 (en) 2009-04-28 2011-11-15 Baker Hughes Incorporated Adaptive control concept for hybrid PDC/roller cone bits
US8701799B2 (en) 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
US9670736B2 (en) 2009-05-13 2017-06-06 Baker Hughes Incorporated Hybrid drill bit
US20100288561A1 (en) * 2009-05-13 2010-11-18 Baker Hughes Incorporated Hybrid drill bit
US8459378B2 (en) 2009-05-13 2013-06-11 Baker Hughes Incorporated Hybrid drill bit
US20100320001A1 (en) * 2009-06-18 2010-12-23 Baker Hughes Incorporated Hybrid bit with variable exposure
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
US20100326740A1 (en) * 2009-06-26 2010-12-30 Hall David R Bonded Assembly Having Low Residual Stress
US9556681B2 (en) 2009-09-16 2017-01-31 Baker Hughes Incorporated External, divorced PDC bearing assemblies for hybrid drill bits
US9982488B2 (en) 2009-09-16 2018-05-29 Baker Hughes Incorporated External, divorced PDC bearing assemblies for hybrid drill bits
US20110079444A1 (en) * 2009-09-16 2011-04-07 Baker Hughes Incorporated External, Divorced PDC Bearing Assemblies for Hybrid Drill Bits
US9004198B2 (en) 2009-09-16 2015-04-14 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
US8191635B2 (en) 2009-10-06 2012-06-05 Baker Hughes Incorporated Hole opener with hybrid reaming section
US20110079443A1 (en) * 2009-10-06 2011-04-07 Baker Hughes Incorporated Hole opener with hybrid reaming section
US20110079441A1 (en) * 2009-10-06 2011-04-07 Baker Hughes Incorporated Hole opener with hybrid reaming section
US20110079440A1 (en) * 2009-10-06 2011-04-07 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
US20110079442A1 (en) * 2009-10-06 2011-04-07 Baker Hughes Incorporated Hole opener with hybrid reaming section
US8550190B2 (en) 2010-04-01 2013-10-08 David R. Hall Inner bit disposed within an outer bit
US9677343B2 (en) 2010-04-23 2017-06-13 Schlumberger Technology Corporation Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
US8839888B2 (en) 2010-04-23 2014-09-23 Schlumberger Technology Corporation Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
US8418784B2 (en) 2010-05-11 2013-04-16 David R. Hall Central cutting region of a drilling head assembly
US9657527B2 (en) 2010-06-29 2017-05-23 Baker Hughes Incorporated Drill bits with anti-tracking features
US8950514B2 (en) 2010-06-29 2015-02-10 Baker Hughes Incorporated Drill bits with anti-tracking features
US8333254B2 (en) 2010-10-01 2012-12-18 Hall David R Steering mechanism with a ring disposed about an outer diameter of a drill bit and method for drilling
US8820440B2 (en) 2010-10-01 2014-09-02 David R. Hall Drill bit steering assembly
US8978786B2 (en) 2010-11-04 2015-03-17 Baker Hughes Incorporated System and method for adjusting roller cone profile on hybrid bit
US9782857B2 (en) 2011-02-11 2017-10-10 Baker Hughes Incorporated Hybrid drill bit having increased service life
US8342266B2 (en) 2011-03-15 2013-01-01 Hall David R Timed steering nozzle on a downhole drill bit
US9353575B2 (en) * 2011-11-15 2016-05-31 Baker Hughes Incorporated Hybrid drill bits having increased drilling efficiency
US10072462B2 (en) 2011-11-15 2018-09-11 Baker Hughes Incorporated Hybrid drill bits
EP3159475A1 (en) * 2011-11-15 2017-04-26 Baker Hughes Incorporated Hybrid drill bits having increased drilling efficiency
CN103015899A (en) * 2012-12-19 2013-04-03 江汉石油钻头股份有限公司 Mixed drilling bit with enhanced core part cutting function
US10107039B2 (en) 2014-05-23 2018-10-23 Baker Hughes Incorporated Hybrid bit with mechanically attached roller cone elements

Similar Documents

Publication Publication Date Title
US3237705A (en) Reamer for enlarging and straightening bore holes
US3344870A (en) Reamer for jet piercer
US2694549A (en) Joint structure between flexible shafting and drill bit structure for drilling lateral bores
US3106973A (en) Rotary drill bits
US6345673B1 (en) High offset bits with super-abrasive cutters
US5595255A (en) Rotary cone drill bit with improved support arms
US6367569B1 (en) Replaceable multiple TCI kerf ring
US20090159338A1 (en) Reamer With Improved Hydraulics For Use In A Wellbore
US3011566A (en) Bearing wear indication for a roller bit
US5027913A (en) Insert attack angle for roller cone rock bits
US6450270B1 (en) Rotary cone bit for cutting removal
US2819043A (en) Combination drilling bit
US3114416A (en) Liner hanger and liner milling tool
US5606895A (en) Method for manufacture and rebuild a rotary drill bit
US4108260A (en) Rock bit with specially shaped inserts
US3998500A (en) Mountable cone sub assembly
US5474143A (en) Drill bit reamer stabilizer
US4393948A (en) Rock boring bit with novel teeth and geometry
US3866987A (en) Drill bit with laminated friction bearing
US6527066B1 (en) Hole opener with multisized, replaceable arms and cutters
US1847981A (en) Section roller cutter organization for earth boring apparatus
US3134447A (en) Rolling cone rock bit with wraparound spearpoints
US4630693A (en) Rotary cutter assembly
US1388424A (en) Rotary bit
US20080264695A1 (en) Hybrid Drill Bit and Method of Drilling