US1360908A - Reamer - Google Patents
Reamer Download PDFInfo
- Publication number
- US1360908A US1360908A US396628A US39662820A US1360908A US 1360908 A US1360908 A US 1360908A US 396628 A US396628 A US 396628A US 39662820 A US39662820 A US 39662820A US 1360908 A US1360908 A US 1360908A
- Authority
- US
- United States
- Prior art keywords
- bit
- casing
- drill
- movable part
- recess
- 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
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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
- E21B10/64—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
Description
A. EVERSON.
REA'MER.
APPLICATION men JULY 16. I920.
Patented Nov. 30,1920.
' 2 SHEETS-SHEET 1- 2149467" Eye/150 ATTORNEY WITNESS:
A. EVERSON.
REAMER.
APPLICATION FILED JULY 16. 1920.
7 Patented Nov. 30, 1920.
2 $HEET3-SHEET 2- \f 6 fig. 2 5
@wzfrersorr fa WW WITNESS:
INVENTOR ATTORNEY other features of construction and in the.
PATENT OFFICE.
AUGUST EVERSON', 0F BIG- SANDY, MONTANA.
REAMER.
Application fi1ed July 16,
T 0 all whom it may concern:
e it known that I, AUeUs'r EvEnsoN, a citizen of the United States, residing at Big Sandy, in the county of Chouteau and State of Montana, have invented new and useful Improvements in Reamers, of which the following is a specification.
This invention relates to a drill, the principal object of the invention being to provide means for boring a hole of greater di ameter than the casing so as to provide room for the couplings of the casing, while permitting the drill to be passed through the casing.
Another object of the invention is to provide the bit with a movable part so that the said movable part may be moved into a position to permit'the drill to pass through the casing with means for moving the movable part to assume its normal position when it strikes the bottom of the casing;
This invention also consists in certain combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out. in the appended claims.
In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a sectional view showing the device in use in a casing.
Fig. 2 is an enlarged side view with the movable part of the bit in extended position and ready to be drawn through the casing.
Fig. 3 is an edge View of Fig. 1.
Fig. e'is a longitudinal sectional view.
F ig. 5 is a detail View showing thefconstruction of the spring.
In these views 1 indicates the drill shank and 2 the bit which is of greater width than the shank and is also of greater width than the diameter of the casing so that it will bore a hole of'larger diameter than the casing to make room for the couplings in the casing, said casing being shown at 3 in F 1g. 1. In order to permit the drill to pass through the casing I provide means for contracting the bit part, such means consisting in making a portion at of the bit part movable. This part 4 fits in a substantially wedge shaped recess .5. formed in the head of Specification of Letters Patent.
Patented Nov. 30, 1920. 1920. Serial No. 396,628.
the bit so that the pressure upon said movpart 4 is secured to the side members 6 in any desired manner. These side members rest upon the sides of the shank and are slidably secured thereon by means of the bolt 7 which passes through the shank and through the inclined slots 8 formed in the said side members. Guiding pins 9 are carried by the shank and engage'the inner edges of the side members for preventing lateral play of the side members. The side members are held in raised position with the movable part of the bit in this recess by means of the springs 10 which are secured to the sides of the shank and have their lower ends engaging the upper ends of the side members. The contacting faces of the springs and side members are provided with teeth 11 for interlocking with each other.
It will thus be seen that when the movable part is drawn out of its recess the side members will move at an incline toward the head end of the shank so as to throw said movable part in front of the other part of the bit, thus contracting the head of the bit and permitting it to pass through the casing. As soon as the movable part of the bit strikes the bottom of the hole it will be forced back into its recess and the springs engaging the side members will hold it in this position while the drill is being actuated. When the drill is to be withdrawn from the casing it is simply necessary to raise the drill sharply to cause the bit to strike against the bottom of the casing. This blow will cause the movable part to be moved downwardly out of its recess and in front of the other part and thus permit the device to be drawn from the casing.
It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.
I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.
What I claim is 1. A drill of the class described having a recess in its bit end, a movable bit part fitting in said recess, side pieces secured to said movable part and engaging the sides of the drill, guiding means for giving said side pieces a downwardly and inclined movement to throW the movable part in front of v the other bit part and spring means for holding the parts in raised position.
2. A drill of the class described having a Wide bit end having a recess in one side thereof, a movable bit part fitting in said recess, side pieces secured to said movable part and having inclined slots therein, a bolt passing through the drill and said inclined slots, a guiding pin in the bit engaging the 10 nner edge of eachslde piece and a sprlng plate secured to each side of the drill and having its end engaging the upper end of each side piece.
In testimony whereof I afix ms signature. 15
AUGUST EVi ERSON.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US396628A US1360908A (en) | 1920-07-16 | 1920-07-16 | Reamer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US396628A US1360908A (en) | 1920-07-16 | 1920-07-16 | Reamer |
Publications (1)
Publication Number | Publication Date |
---|---|
US1360908A true US1360908A (en) | 1920-11-30 |
Family
ID=23568006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US396628A Expired - Lifetime US1360908A (en) | 1920-07-16 | 1920-07-16 | Reamer |
Country Status (1)
Country | Link |
---|---|
US (1) | US1360908A (en) |
Cited By (78)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5361859A (en) * | 1993-02-12 | 1994-11-08 | Baker Hughes Incorporated | Expandable gage bit for drilling and method of drilling |
US7198119B1 (en) | 2005-11-21 | 2007-04-03 | Hall David R | Hydraulic drill bit assembly |
US20070114067A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | Drill Bit Assembly with an Indenting Member |
US20070114066A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | A Drill Bit Assembly Adapted to Provide Power Downhole |
US20070114068A1 (en) * | 2005-11-21 | 2007-05-24 | Mr. David Hall | Drill Bit Assembly for Directional Drilling |
US20070114062A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | Drill Bit Assembly with a Logging Device |
US20070221406A1 (en) * | 2006-03-24 | 2007-09-27 | Hall David R | Jack Element for a Drill Bit |
US20070221412A1 (en) * | 2005-11-21 | 2007-09-27 | Hall David R | Rotary Valve for a Jack Hammer |
US20070229304A1 (en) * | 2006-03-23 | 2007-10-04 | Hall David R | Drill Bit with an Electrically Isolated Transmitter |
US20080029312A1 (en) * | 2006-03-23 | 2008-02-07 | Hall David R | Indenting Member for a Drill Bit |
US20080087473A1 (en) * | 2006-10-13 | 2008-04-17 | Hall David R | Percussive Drill Bit |
US7392857B1 (en) | 2007-01-03 | 2008-07-01 | Hall David R | Apparatus and method for vibrating a drill bit |
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 |
US7484576B2 (en) | 2006-03-23 | 2009-02-03 | Hall David R | Jack element in communication with an electric motor and or generator |
US7497279B2 (en) | 2005-11-21 | 2009-03-03 | Hall David R | Jack element adapted to rotate independent of a drill bit |
US7533737B2 (en) | 2005-11-21 | 2009-05-19 | Hall David R | Jet arrangement for a downhole drill bit |
US20090158897A1 (en) * | 2005-11-21 | 2009-06-25 | Hall David R | Jack Element with a Stop-off |
US7559379B2 (en) | 2005-11-21 | 2009-07-14 | Hall David R | Downhole steering |
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 |
US7591327B2 (en) | 2005-11-21 | 2009-09-22 | Hall David R | Drilling at a resonant frequency |
US7600586B2 (en) | 2006-12-15 | 2009-10-13 | Hall David R | System for steering a drill string |
US7617886B2 (en) | 2005-11-21 | 2009-11-17 | Hall David R | Fluid-actuated hammer bit |
US20100059289A1 (en) * | 2006-08-11 | 2010-03-11 | Hall David R | Cutting Element with Low Metal Concentration |
US20100089648A1 (en) * | 2006-08-11 | 2010-04-15 | Hall David R | Fixed Bladed Bit that Shifts Weight between an Indenter and Cutting Elements |
US7721826B2 (en) | 2007-09-06 | 2010-05-25 | Schlumberger Technology Corporation | Downhole jack assembly sensor |
US20100175928A1 (en) * | 2007-05-25 | 2010-07-15 | Kwang Ik Lee | Hammer bit |
USD620510S1 (en) | 2006-03-23 | 2010-07-27 | Schlumberger Technology Corporation | Drill bit |
US7762353B2 (en) | 2006-03-23 | 2010-07-27 | Schlumberger Technology Corporation | Downhole valve mechanism |
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 |
US7954401B2 (en) | 2006-10-27 | 2011-06-07 | Schlumberger Technology Corporation | Method of assembling a drill bit with a jack element |
US7967083B2 (en) | 2007-09-06 | 2011-06-28 | Schlumberger Technology Corporation | Sensor for determining a position of a jack element |
US20110180324A1 (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 |
US8122980B2 (en) | 2007-06-22 | 2012-02-28 | Schlumberger Technology Corporation | Rotary drag bit with pointed cutting elements |
US8201892B2 (en) | 2006-08-11 | 2012-06-19 | Hall David R | Holder assembly |
US8205688B2 (en) | 2005-11-21 | 2012-06-26 | Hall David R | Lead the bit rotary steerable system |
US8215420B2 (en) | 2006-08-11 | 2012-07-10 | Schlumberger Technology Corporation | Thermally stable pointed diamond with increased impact resistance |
US8240404B2 (en) | 2006-08-11 | 2012-08-14 | Hall David R | Roof bolt bit |
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 |
US8297375B2 (en) | 2005-11-21 | 2012-10-30 | Schlumberger Technology Corporation | Downhole turbine |
US8297378B2 (en) | 2005-11-21 | 2012-10-30 | Schlumberger Technology Corporation | Turbine driven hammer that oscillates at a constant frequency |
US8316964B2 (en) | 2006-03-23 | 2012-11-27 | Schlumberger Technology Corporation | Drill bit transducer device |
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 |
US8418784B2 (en) | 2010-05-11 | 2013-04-16 | David R. Hall | Central cutting region of a drilling head assembly |
US8434573B2 (en) | 2006-08-11 | 2013-05-07 | Schlumberger Technology Corporation | Degradation assembly |
US8449040B2 (en) | 2006-08-11 | 2013-05-28 | David R. Hall | Shank for an attack tool |
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 |
US8540037B2 (en) | 2008-04-30 | 2013-09-24 | Schlumberger Technology Corporation | Layered polycrystalline diamond |
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 |
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 |
US8622155B2 (en) | 2006-08-11 | 2014-01-07 | Schlumberger Technology Corporation | Pointed diamond working ends on a shear bit |
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 |
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 |
US9366089B2 (en) | 2006-08-11 | 2016-06-14 | Schlumberger Technology Corporation | Cutting element attached to downhole fixed bladed bit at a positive rake angle |
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 |
US10119350B2 (en) * | 2016-05-26 | 2018-11-06 | Baker Hughes, A Ge Company, Llc | Expandable junk mill |
-
1920
- 1920-07-16 US US396628A patent/US1360908A/en not_active Expired - Lifetime
Cited By (117)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5361859A (en) * | 1993-02-12 | 1994-11-08 | Baker Hughes Incorporated | Expandable gage bit for drilling and method of drilling |
BE1010105A5 (en) * | 1993-02-12 | 1997-12-02 | Baker Hughes Inc | Drill drill a calibre expansible. |
US8297378B2 (en) | 2005-11-21 | 2012-10-30 | Schlumberger Technology Corporation | Turbine driven hammer that oscillates at a constant frequency |
US20070114062A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | Drill Bit Assembly with a Logging Device |
US20070114065A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | Drill Bit Assembly |
US20070114066A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | A Drill Bit Assembly Adapted to Provide Power Downhole |
US20070114068A1 (en) * | 2005-11-21 | 2007-05-24 | Mr. David Hall | Drill Bit Assembly for Directional Drilling |
US20070114061A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | Drill Bit Assembly with a Probe |
US8020471B2 (en) | 2005-11-21 | 2011-09-20 | Schlumberger Technology Corporation | Method for manufacturing a drill bit |
US20070114071A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | Rotary Bit with an Indenting Member |
US7225886B1 (en) | 2005-11-21 | 2007-06-05 | Hall David R | Drill bit assembly with an indenting member |
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 |
US7198119B1 (en) | 2005-11-21 | 2007-04-03 | Hall David R | Hydraulic drill bit assembly |
US20070221412A1 (en) * | 2005-11-21 | 2007-09-27 | Hall David R | Rotary Valve for a Jack Hammer |
US7967082B2 (en) | 2005-11-21 | 2011-06-28 | Schlumberger Technology Corporation | Downhole mechanism |
US8205688B2 (en) | 2005-11-21 | 2012-06-26 | Hall David R | Lead the bit rotary steerable system |
US7328755B2 (en) | 2005-11-21 | 2008-02-12 | Hall David R | Hydraulic drill bit assembly |
US7337858B2 (en) | 2005-11-21 | 2008-03-04 | Hall David R | Drill bit assembly adapted to provide power downhole |
US8950517B2 (en) | 2005-11-21 | 2015-02-10 | Schlumberger Technology Corporation | Drill bit with a retained jack element |
US7360610B2 (en) | 2005-11-21 | 2008-04-22 | Hall David R | Drill bit assembly for directional drilling |
US8528664B2 (en) | 2005-11-21 | 2013-09-10 | Schlumberger Technology Corporation | Downhole mechanism |
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 |
US20080179098A1 (en) * | 2005-11-21 | 2008-07-31 | Hall David R | Drill Bit Assembly for Directional Drilling |
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 |
US7497279B2 (en) | 2005-11-21 | 2009-03-03 | Hall David R | Jack element adapted to rotate independent of a drill bit |
US20080302572A1 (en) * | 2005-11-21 | 2008-12-11 | Hall David R | Drill Bit Porting System |
US8408336B2 (en) | 2005-11-21 | 2013-04-02 | Schlumberger Technology Corporation | Flow guide actuation |
US7426968B2 (en) | 2005-11-21 | 2008-09-23 | Hall David R | Drill bit assembly with a probe |
US20070114067A1 (en) * | 2005-11-21 | 2007-05-24 | Hall David R | Drill Bit Assembly with an Indenting Member |
US7424922B2 (en) | 2005-11-21 | 2008-09-16 | Hall David R | Rotary valve for a jack hammer |
US7506701B2 (en) * | 2005-11-21 | 2009-03-24 | Hall David R | Drill bit assembly for directional drilling |
US8225883B2 (en) | 2005-11-21 | 2012-07-24 | Schlumberger Technology Corporation | Downhole percussive tool with alternating pressure differentials |
US7533737B2 (en) | 2005-11-21 | 2009-05-19 | Hall David R | Jet arrangement for a downhole drill bit |
US20090158897A1 (en) * | 2005-11-21 | 2009-06-25 | Hall David R | Jack Element with a Stop-off |
US7559379B2 (en) | 2005-11-21 | 2009-07-14 | Hall David R | Downhole steering |
US20090183919A1 (en) * | 2005-11-21 | 2009-07-23 | Hall David R | Downhole Percussive Tool with Alternating Pressure Differentials |
US8267196B2 (en) | 2005-11-21 | 2012-09-18 | Schlumberger Technology Corporation | Flow guide actuation |
US8281882B2 (en) | 2005-11-21 | 2012-10-09 | Schlumberger Technology Corporation | Jack element for a drill bit |
US7591327B2 (en) | 2005-11-21 | 2009-09-22 | Hall David R | Drilling at a resonant frequency |
US8297375B2 (en) | 2005-11-21 | 2012-10-30 | Schlumberger Technology Corporation | Downhole turbine |
US7617886B2 (en) | 2005-11-21 | 2009-11-17 | Hall David R | Fluid-actuated hammer bit |
US7641002B2 (en) | 2005-11-21 | 2010-01-05 | Hall David R | Drill bit |
US7900720B2 (en) | 2006-01-18 | 2011-03-08 | Schlumberger Technology Corporation | Downhole drive shaft connection |
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 |
US8360174B2 (en) | 2006-03-23 | 2013-01-29 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
US7484576B2 (en) | 2006-03-23 | 2009-02-03 | Hall David R | Jack element in communication with an electric motor and or generator |
US20090183920A1 (en) * | 2006-03-23 | 2009-07-23 | Hall David R | Downhole Percussive Tool with Alternating Pressure Differentials |
US7419016B2 (en) | 2006-03-23 | 2008-09-02 | Hall David R | Bi-center drill bit |
US7694756B2 (en) | 2006-03-23 | 2010-04-13 | Hall David R | Indenting member for a drill bit |
US8316964B2 (en) | 2006-03-23 | 2012-11-27 | Schlumberger Technology Corporation | Drill bit transducer device |
US8011457B2 (en) | 2006-03-23 | 2011-09-06 | Schlumberger Technology Corporation | Downhole hammer assembly |
US7762353B2 (en) | 2006-03-23 | 2010-07-27 | Schlumberger Technology Corporation | Downhole valve mechanism |
US20080029312A1 (en) * | 2006-03-23 | 2008-02-07 | Hall David R | Indenting Member for a Drill Bit |
US7661487B2 (en) | 2006-03-23 | 2010-02-16 | Hall David R | Downhole percussive tool with alternating pressure differentials |
US8130117B2 (en) | 2006-03-23 | 2012-03-06 | Schlumberger Technology Corporation | Drill bit with an electrically isolated transmitter |
US20070221406A1 (en) * | 2006-03-24 | 2007-09-27 | Hall David R | Jack Element for a Drill Bit |
US7571780B2 (en) | 2006-03-24 | 2009-08-11 | Hall David R | Jack element for a drill bit |
US20110180324A1 (en) * | 2006-08-11 | 2011-07-28 | 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 |
US10378288B2 (en) | 2006-08-11 | 2019-08-13 | Schlumberger Technology Corporation | Downhole drill bit incorporating cutting elements of different geometries |
US9915102B2 (en) | 2006-08-11 | 2018-03-13 | Schlumberger Technology Corporation | Pointed working ends on a bit |
US8191651B2 (en) | 2006-08-11 | 2012-06-05 | Hall David R | Sensor on a formation engaging member of a drill bit |
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 |
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 |
US8240404B2 (en) | 2006-08-11 | 2012-08-14 | Hall David R | Roof bolt bit |
US9316061B2 (en) | 2006-08-11 | 2016-04-19 | David R. Hall | High impact resistant degradation element |
US9051795B2 (en) | 2006-08-11 | 2015-06-09 | Schlumberger Technology Corporation | Downhole drill bit |
US8714285B2 (en) | 2006-08-11 | 2014-05-06 | Schlumberger Technology Corporation | Method for drilling with a fixed bladed bit |
US20100089648A1 (en) * | 2006-08-11 | 2010-04-15 | Hall David R | Fixed Bladed Bit that Shifts Weight between an Indenter and Cutting Elements |
US20100059289A1 (en) * | 2006-08-11 | 2010-03-11 | Hall David R | Cutting Element with Low Metal Concentration |
US8622155B2 (en) | 2006-08-11 | 2014-01-07 | Schlumberger Technology Corporation | Pointed diamond working ends on a shear bit |
US8616305B2 (en) | 2006-08-11 | 2013-12-31 | Schlumberger Technology Corporation | Fixed bladed bit that shifts weight between an indenter and cutting elements |
US8596381B2 (en) | 2006-08-11 | 2013-12-03 | David R. Hall | Sensor on a formation engaging member of a drill bit |
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US8573331B2 (en) | 2006-08-11 | 2013-11-05 | David R. Hall | Roof mining drill bit |
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