US3346060A - Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge - Google Patents

Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge Download PDF

Info

Publication number
US3346060A
US3346060A US517183A US51718365A US3346060A US 3346060 A US3346060 A US 3346060A US 517183 A US517183 A US 517183A US 51718365 A US51718365 A US 51718365A US 3346060 A US3346060 A US 3346060A
Authority
US
United States
Prior art keywords
bit
grooves
lengthwise
air
bottom face
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
US517183A
Inventor
Beyer Leaman Rex
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US517183A priority Critical patent/US3346060A/en
Application granted granted Critical
Publication of US3346060A publication Critical patent/US3346060A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/06—Fishing for or freeing objects in boreholes or wells using magnetic means
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts

Definitions

  • Intersecting grooves in the side Walls extend both around and lengthwise of the bit and fluid inlets lead into the lengthwise extending grooves, which have magnets in them.
  • the grooves extending around the bit are V-shaped in cross section and have tungsten carbide inserts mounted in one slanting wall of each groove at an oblique angle to the axis of the drill bit.
  • This invention relates to improvements in air hammer percussion reamer drilling bits, and particularly to rotary air hammer bits, having effective penetration and reaming of the holes and satisfactory drilling of a hole in varying formations such as hard, medium, and soft rock, or clay and sand.
  • the invention relates to a drill bit adapted to be connected with rotating and percussion means at its upper end, said bit including a body portion having a horizontal bottom face, vertically spaced curved side wall portions, which may be vertically aligned or cut back at an angle of from three to four degrees upwardly, said bit having drill-cuttings grooves in the sides and the bottom face of the head, and two rows of upper tungsten carbide cutters, located in the upper part of the head for reaming of the hole while drilling, assuring the gauge of the bit and of the hole, and stabilizing the bit, hammer and drill pipe while drilling.
  • An object of my invention is to so locate the tungsten carbide inserts as to assure the reaming of the drilled hole thereby and keeping the hole and head of the bit at all times full gauge. Another object is to provide a substantially right angular corner between the bottom face of the bit'and the adjacent curved side wall and provide carbide cutters in the head of the bit that extend substantially vertically. This prevents the carbide cutters from breaking off while drilling and assures the drilling of a true gauge hole at all times.
  • Another object is to provide magnets in the water and air courses, which draw broken pieces of carbide off the bottom of the hole and hold them in the grooves provided in the sides of the drill head.
  • One of the principal objects of my invention is to provide water and air courses for the free passage of drill cuttings and of the exhaust of the hammer through the bit, said water and air courses being provided by means of the grooves in the sides andbottom of the face of the head, which have air and water inlets leading into certain of the same.
  • FIG. 1 is a bottom plan view slightly in perspective of my improved bit
  • FIG. 2 is a side elevation thereof
  • FIG. 3 is a section taken on the line 3-3 FIG. 1, the drill shank being broken away.
  • the percussion air hammer drill bit has a shank 1, and a main body portion 2. Pairs of diametrically opposite drill-cuttings grooves 4 extend lengthwise of said bit, one pair thereof being connected by means of a transverse groove in the bottom face 3 of said bit, said transverse groove providing a recess centrally of said bottom face. Magnets 5 are mounted in said grooves 4.
  • the corner 6 between the bottom face 3 and adjacent curved side wall portions is substantially square.
  • the carbide compacts 7 are mounted in the body portion to extend substantially vertically with the rounded end portions thereof projecting downwardly from the bottom face 3 of the drill.
  • the carbide compacts 10 adjacent the corner 6 of the head serve as reaming cutters. Openings 9 lead from a suitable supply passage for air and water under pressure in said bit into the grooves 4.
  • V- shaped air and water grooves 11 are provided in the side walls of the bit between the grooves 4, having inclined walls 12 and 13, the walls 13 being provided with reamer carbide compacts 10.
  • the air and water courses provided by means of the grooves 4 and 11 provide for passage of drill cuttings on their way out of the hole.
  • the reamer carbides 10 at all times keeps the hole and bit to a full gauge and ream the hole as the bit drills.
  • the grooves 11 pass the drill cuttings to the drill-cuttings grooves 4 on their way past the bit out of the hole.
  • the carbide compacts 10 in the grooves 11 keep the hole reamed at all times.
  • the upper reamer carbide compacts are inserted on a forty-five degree angle to the longitudinal axis of the bit.
  • the bit illustrated is provided with two upper rows of carbides 10 and a lower or bottom row of carbide compacts 10, the carbide compacts 10 being all reaming carbides, and there being twelve carbide inserts in each of said rows.
  • the air and water holes at 9 in FIGURE 1 provide free passage of air and water through the bit to the cuttingsgrooves and then free passage out of the drill hole between the bit and the wall of the hole.
  • the bevel drill cuttings grooves 11 provide free passage of the drill cuttings therethrough and to drill-cuttings grooves 4 on their way out of the hole.
  • a rotary percussion bit having a body portion having a flat bottom face, inserts of hard, wear resistant material mounted in said body portion and projecting downwardly from said flat bottom face, said body portion having a convexly curved side wall having outwardly opening grooves therein extending lengthwise thereof said grooves extending through said flat bottom face, said side walls having outwardly opening grooves extending circumferentially thereof between said lengthwise extending grooves and connected therewith, said lengthwise extending grooves having fluid inlets leading into the same, said lengthwise and circumferentially extending grooves defining convexly curved side wall portions spaced lengthwise of said bit, and inserts of hard, wear resistant material mounted in and projecting from the walls of said circumferentially extending grooves with the ends thereof in substantial alignment with said curved side wall portions.

Description

O 10, 96 R. BEYER 3 346,060
. I ROTARY-AIR-PERCUSSI STABILIZ A REAMER DRILL OWN Y BIT OF TRU A Filed Dec. 26, 1965 2 Sheets-Sheet l INVENTOR.
LEAMAN REX BEVER A T TORNEV Oct. 10, 1967 L R. BEYER 3,?L46,060
ROTARY-AIR-PERCUSSIdN, STABILIZER AND REAMER DRIL BIT OF ITS OWN TRUE GAUGE Filed Dec. 23, 1965 2 Sheets-Sheet 2 /2 w \u /0 j j J 8 5 I3 2 /Z 10 l 10 2 a J a INVENTOR.
LEA/WAN REX BEYER A 7' TOR/VEV United States Patent Ofiice 3,3463% Patented Oct. 10, 1967 r 3,346,060 ROTARY-AlR-PERCUSSEON, STABILIZER AND REAMER DRILL BET OF ITS OWN TRUE GAUGE Leaman Rex Beyer, Newton County, Diamond, Mo. 64840 Filed Dec. 23, 1965, Ser. No. 517,183 8 Claims. (Cl. 175410) ABSTRACT OF THE DISCLOSURE A rotary percussion bit that has a fiat bottom face in which downwardly projecting tungsten carbide inserts are mounted and curved side Walls extending substantially perpendicularly to the bottom face. Intersecting grooves in the side Walls extend both around and lengthwise of the bit and fluid inlets lead into the lengthwise extending grooves, which have magnets in them. The grooves extending around the bit are V-shaped in cross section and have tungsten carbide inserts mounted in one slanting wall of each groove at an oblique angle to the axis of the drill bit.
This invention relates to improvements in air hammer percussion reamer drilling bits, and particularly to rotary air hammer bits, having effective penetration and reaming of the holes and satisfactory drilling of a hole in varying formations such as hard, medium, and soft rock, or clay and sand. v
Briefly summarized, the invention relates to a drill bit adapted to be connected with rotating and percussion means at its upper end, said bit including a body portion having a horizontal bottom face, vertically spaced curved side wall portions, which may be vertically aligned or cut back at an angle of from three to four degrees upwardly, said bit having drill-cuttings grooves in the sides and the bottom face of the head, and two rows of upper tungsten carbide cutters, located in the upper part of the head for reaming of the hole while drilling, assuring the gauge of the bit and of the hole, and stabilizing the bit, hammer and drill pipe while drilling.
An object of my invention is to so locate the tungsten carbide inserts as to assure the reaming of the drilled hole thereby and keeping the hole and head of the bit at all times full gauge. Another object is to provide a substantially right angular corner between the bottom face of the bit'and the adjacent curved side wall and provide carbide cutters in the head of the bit that extend substantially vertically. This prevents the carbide cutters from breaking off while drilling and assures the drilling of a true gauge hole at all times.
Another object is to provide magnets in the water and air courses, which draw broken pieces of carbide off the bottom of the hole and hold them in the grooves provided in the sides of the drill head.
One of the principal objects of my invention is to provide water and air courses for the free passage of drill cuttings and of the exhaust of the hammer through the bit, said water and air courses being provided by means of the grooves in the sides andbottom of the face of the head, which have air and water inlets leading into certain of the same.
While the invention is susceptible to modification and alternative construction due to the fact of difference in diameter of bits and their uses in hard and soft formation of rock, I do show in the drawings and will herein describe in detail the preferred embodiment, but it is to be understood that I do not intend to limit the invention to any specific size of drilling bit.
FIG. 1 is a bottom plan view slightly in perspective of my improved bit,
' FIG. 2 is a side elevation thereof, and
FIG. 3 is a section taken on the line 3-3 FIG. 1, the drill shank being broken away.
Like characters of reference indicate corresponding parts in the different views of the drawing.
The percussion air hammer drill bit has a shank 1, and a main body portion 2. Pairs of diametrically opposite drill-cuttings grooves 4 extend lengthwise of said bit, one pair thereof being connected by means of a transverse groove in the bottom face 3 of said bit, said transverse groove providing a recess centrally of said bottom face. Magnets 5 are mounted in said grooves 4. The corner 6 between the bottom face 3 and adjacent curved side wall portions is substantially square.
The carbide compacts 7 are mounted in the body portion to extend substantially vertically with the rounded end portions thereof projecting downwardly from the bottom face 3 of the drill. The carbide compacts 10 adjacent the corner 6 of the head serve as reaming cutters. Openings 9 lead from a suitable supply passage for air and water under pressure in said bit into the grooves 4. V- shaped air and water grooves 11 are provided in the side walls of the bit between the grooves 4, having inclined walls 12 and 13, the walls 13 being provided with reamer carbide compacts 10.
The air and water courses provided by means of the grooves 4 and 11 provide for passage of drill cuttings on their way out of the hole. The reamer carbides 10 at all times keeps the hole and bit to a full gauge and ream the hole as the bit drills. The grooves 11 pass the drill cuttings to the drill-cuttings grooves 4 on their way past the bit out of the hole. The carbide compacts 10 in the grooves 11 keep the hole reamed at all times.
The magnets 5 in recesses in the drill cutting grooves 4, which are the main vertical water, air and drill cuttings courses, close to the bottom of the hole draw the broken pieces of carbides through cuttings grooves 4 and hold same in the recesses. V
The construction of the head 2 of the bit and the length of same, makes it possible when the face 3 of the bit and the carbide compacts 7 are worn to cut off the head 2 at 8. New cuttings-grooves can be then cut in the resulting bottom face of the bit and new carbides 7 inserted. This makes a new bit at about one-half price of a new bit, as the shank 1 and the head 2 will be in good condition, due to the fact there is no or little wear on shank 1 and remainder of the head 2.
Conventional bits do have a 30 to 38 degree taper, so called heel taper-bevel or outside gauge bevel. This is the cause of the bevel or gauge side carbides compacts breaking off while drilling. In my invention the square corners or flat corners 6 between the bottom face 3 and adjacent side wall portion of my bit makes it possible to insert the carbides substantially vertically. This position of inserted carbides keeps the carbide compacts from breaking off when drilling.
The upper reamer carbide compacts are inserted on a forty-five degree angle to the longitudinal axis of the bit. The bit illustrated is provided with two upper rows of carbides 10 and a lower or bottom row of carbide compacts 10, the carbide compacts 10 being all reaming carbides, and there being twelve carbide inserts in each of said rows.
The air and water holes at 9 in FIGURE 1 provide free passage of air and water through the bit to the cuttingsgrooves and then free passage out of the drill hole between the bit and the wall of the hole.
The bevel drill cuttings grooves 11 provide free passage of the drill cuttings therethrough and to drill-cuttings grooves 4 on their way out of the hole.
While this invention has been described with particular reference to the construction shown in the drawings and while various changes may be made in the detail construction for different sizes of bits and because of various designs of air hammers and various capacities of air pressure used in the hammers, it shall be understood that such changes will be within the spirit and scope of the present invention as defined by the appended claims.
Having thus completed and fully described the invention, what is now claimed as new and desired to be protected by Letters Patent of the United States is:
1. A rotary percussion bit having a body portion having a flat bottom face, inserts of hard, wear resistant material mounted in said body portion and projecting downwardly from said flat bottom face, said body portion having a convexly curved side wall having outwardly opening grooves therein extending lengthwise thereof said grooves extending through said flat bottom face, said side walls having outwardly opening grooves extending circumferentially thereof between said lengthwise extending grooves and connected therewith, said lengthwise extending grooves having fluid inlets leading into the same, said lengthwise and circumferentially extending grooves defining convexly curved side wall portions spaced lengthwise of said bit, and inserts of hard, wear resistant material mounted in and projecting from the walls of said circumferentially extending grooves with the ends thereof in substantial alignment with said curved side wall portions.
2. The rotary percussion bit claimed in claim 1 in which said circumferentially extending grooves are V-shaped in cross section.
3. The rotary percussion bit claimed in claim 1 in which said inserts projecting from the walls of said circumferentially extending grooves extend in an oblique angle to the longitudinal axis of said bit.
4. The rotary percussion bit claimed in claim 1 in which said convexly curved side wall portions include side wall portions extending substantially perependicularly to said fiat bottom face.
5. The rotary percussion bit claimed in claim 1 in which said circumferentially extending grooves have inclined walls facing toward the bottom end of said bit and said inserts project from said inclined walls of said grooves at an angle of approximately forty-five degrees to the longitudinal axis of said bit.
6. The rotary percussion bit claimed in claim 1 in which said lengthwise extending grooves include a pair of diametrically opposed grooves and in which said bottom face is provided with a groove connecting said pair of lengthwise extending grooves.
7. The rotary percussion bit claimed in claim 1 in which said lengthwise extending grooves include a pair of diametrically opposed grooves and said bottom face has a central recess connected with said pair of lengthwise extending grooves.
8. The rotary percussion bit claimed in claim 1 having magnets mounted in said lengthwise extending grooves.
References Cited UNITED STATES PATENTS 2,774,570 12/1956 Cunningham 41O X 3,071,201 1/1963 Phipps 175410 3,185,228 5/1965 Kelly 175410 3,258,077 6/1966 Phipps 175-410 X 3,269,470 8/1966 Kelly 1754l0 CHARLES E. OCONNELL, Primary Examiner.
N. C. BYERS, JR., Assistant Examiner.

Claims (1)

1. A ROTARY PERCUSSION BIT HAVING A BODY PORTION HAVING A FLAT BOTTOM FACE, INSERTS OF HARD, WEAR RESISTANT MATERIAL MOUNTED IN SAID BODY PORTION AND PROJECTING DOWNWARDLY FROM SAID FLAT BOTTOM FACE, SAID BODY PORTION HAVING A CONVEXLY CURVED SIDE WALL HAVING OUTWARDLY OPENING GROOVES THEREIN EXTENDING LENGTHWISE THEREOF SAID GROOVES EXTENDING THROUGH SAID FLAT BOTTOM FACE, SAID SIDE WALLS HAVING OUTWARDLY OPENING GROOVES EXTENDING CIRCUMFERENTIALLY THEREOF BETWEEN SAID LENGTHWISE EXTENDING GROOVES AND CONNECTED THEREWITH, SAID LENGTHWISE EXTENDING GROOVES HAVING FLUID INLETS LEADING INTO THE SAME, SAID LENGTHWISE AND CIRCUMFERENTIALLY EXTENDING GROOVES DEFINING CONVEXLY CURVED SIDE WALL PORTIONS SPACED LENGTHWISE OF SAID BIT, AND INSERTS OF HARD, WEAR RESISTANT MATERIAL
US517183A 1965-12-23 1965-12-23 Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge Expired - Lifetime US3346060A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US517183A US3346060A (en) 1965-12-23 1965-12-23 Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517183A US3346060A (en) 1965-12-23 1965-12-23 Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge

Publications (1)

Publication Number Publication Date
US3346060A true US3346060A (en) 1967-10-10

Family

ID=24058719

Family Applications (1)

Application Number Title Priority Date Filing Date
US517183A Expired - Lifetime US3346060A (en) 1965-12-23 1965-12-23 Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge

Country Status (1)

Country Link
US (1) US3346060A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618683A (en) * 1968-12-16 1971-11-09 Ingersoll Rand Co Button bit
US3788409A (en) * 1972-05-08 1974-01-29 Baker Oil Tools Inc Percussion bits
US3800892A (en) * 1970-06-05 1974-04-02 Boehler & Co Ag Geb Rock drill bit
US3858671A (en) * 1973-04-23 1975-01-07 Kennametal Inc Excavating tool
USRE29151E (en) * 1972-10-10 1977-03-15 Sun Oil Company Repulsing clays on drill bits
US4051912A (en) * 1976-02-03 1977-10-04 Western Rock Bit Company Limited Percussion drill bit
US4069880A (en) * 1973-05-24 1978-01-24 Kennametal Inc. Excavation tool
US4091884A (en) * 1976-11-15 1978-05-30 Smith International, Inc. Rotary air percussion bit
US4106578A (en) * 1976-05-04 1978-08-15 Leaman Rex Beyer Percussion drill bit
US5035293A (en) * 1990-09-12 1991-07-30 Rives Allen K Blade or member to drill or enlarge a bore in the earth and method of forming
US20070114071A1 (en) * 2005-11-21 2007-05-24 Hall David R Rotary Bit with an Indenting Member
US20090183919A1 (en) * 2005-11-21 2009-07-23 Hall David R Downhole Percussive Tool with Alternating Pressure Differentials
US20110048811A1 (en) * 2005-11-21 2011-03-03 Schlumberger Technology Corporation Drill bit with a retained jack element
US7954401B2 (en) 2006-10-27 2011-06-07 Schlumberger Technology Corporation Method of assembling a drill bit with a jack element
US8281882B2 (en) 2005-11-21 2012-10-09 Schlumberger Technology Corporation Jack element for a drill bit
US8297378B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Turbine driven hammer that oscillates at a constant frequency
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
EP2586960A1 (en) * 2011-10-27 2013-05-01 Sandvik Intellectual Property AB Drill bit having a sunken button and rock drilling tool for use with such a drill bit
US8499857B2 (en) 2007-09-06 2013-08-06 Schlumberger Technology Corporation Downhole jack assembly sensor
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
US8701799B2 (en) 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
EP3059383A1 (en) 2015-02-19 2016-08-24 Sandvik Intellectual Property AB Drill bit for improved transport of cuttings
WO2016142534A3 (en) * 2015-03-11 2017-01-05 Tercel Oilfield Products Belgium Sa Downhole tool and bottom hole assembly for running a string in a wellbore
EP3670824A1 (en) 2018-12-17 2020-06-24 Sandvik Mining and Construction Oy Rock drill bit for percussive drilling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774570A (en) * 1954-05-03 1956-12-18 Hughes Tool Co Roller cutter for earth drills
US3071201A (en) * 1959-03-09 1963-01-01 Phipps Orville Piercing point rotary drill bit
US3185228A (en) * 1963-01-21 1965-05-25 Hughes Tool Co Rotary-percussion drill bit with heel row inserts to prevent wedging
US3258077A (en) * 1963-12-30 1966-06-28 Phipps Orville Piercing point hammer drill bit
US3269470A (en) * 1965-11-15 1966-08-30 Hughes Tool Co Rotary-percussion drill bit with antiwedging gage structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774570A (en) * 1954-05-03 1956-12-18 Hughes Tool Co Roller cutter for earth drills
US3071201A (en) * 1959-03-09 1963-01-01 Phipps Orville Piercing point rotary drill bit
US3185228A (en) * 1963-01-21 1965-05-25 Hughes Tool Co Rotary-percussion drill bit with heel row inserts to prevent wedging
US3258077A (en) * 1963-12-30 1966-06-28 Phipps Orville Piercing point hammer drill bit
US3269470A (en) * 1965-11-15 1966-08-30 Hughes Tool Co Rotary-percussion drill bit with antiwedging gage structure

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618683A (en) * 1968-12-16 1971-11-09 Ingersoll Rand Co Button bit
US3800892A (en) * 1970-06-05 1974-04-02 Boehler & Co Ag Geb Rock drill bit
US3788409A (en) * 1972-05-08 1974-01-29 Baker Oil Tools Inc Percussion bits
USRE29151E (en) * 1972-10-10 1977-03-15 Sun Oil Company Repulsing clays on drill bits
US3858671A (en) * 1973-04-23 1975-01-07 Kennametal Inc Excavating tool
US4069880A (en) * 1973-05-24 1978-01-24 Kennametal Inc. Excavation tool
US4051912A (en) * 1976-02-03 1977-10-04 Western Rock Bit Company Limited Percussion drill bit
USRE30952E (en) * 1976-02-03 1982-06-01 Western Rock Bit Company Limited Percussion drill bit
US4106578A (en) * 1976-05-04 1978-08-15 Leaman Rex Beyer Percussion drill bit
US4091884A (en) * 1976-11-15 1978-05-30 Smith International, Inc. Rotary air percussion bit
US5035293A (en) * 1990-09-12 1991-07-30 Rives Allen K Blade or member to drill or enlarge a bore in the earth and method of forming
US8297378B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Turbine driven hammer that oscillates at a constant frequency
US7258179B2 (en) * 2005-11-21 2007-08-21 Hall David R Rotary bit with an indenting member
US20090183919A1 (en) * 2005-11-21 2009-07-23 Hall David R Downhole Percussive Tool with Alternating Pressure Differentials
US20110048811A1 (en) * 2005-11-21 2011-03-03 Schlumberger Technology Corporation Drill bit with a retained jack element
US8225883B2 (en) 2005-11-21 2012-07-24 Schlumberger Technology Corporation Downhole percussive tool with alternating pressure differentials
US8281882B2 (en) 2005-11-21 2012-10-09 Schlumberger Technology Corporation Jack element for a drill bit
US20070114071A1 (en) * 2005-11-21 2007-05-24 Hall David R Rotary Bit with an Indenting Member
US8950517B2 (en) 2005-11-21 2015-02-10 Schlumberger Technology Corporation Drill bit with a retained jack element
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
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US7954401B2 (en) 2006-10-27 2011-06-07 Schlumberger Technology Corporation Method of assembling a drill bit with a jack element
US8499857B2 (en) 2007-09-06 2013-08-06 Schlumberger Technology Corporation Downhole jack assembly sensor
US8701799B2 (en) 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
CN103906885A (en) * 2011-10-27 2014-07-02 山特维克知识产权股份有限公司 Drill bit having a sunken button and rock drilling tool for use with such a drill bit
EP2586960A1 (en) * 2011-10-27 2013-05-01 Sandvik Intellectual Property AB Drill bit having a sunken button and rock drilling tool for use with such a drill bit
WO2013060676A3 (en) * 2011-10-27 2015-08-20 Sandvik Intellectual Property Ab Drill bit having a sunken button and rock drilling tool for use with such a drill bit
CN103906885B (en) * 2011-10-27 2016-09-28 山特维克知识产权股份有限公司 The drill bit with depression button and the rock-drilling tool being used together with this drill bit
AU2012327283B2 (en) * 2011-10-27 2017-06-01 Sandvik Intellectual Property Ab Drill bit having a sunken button and rock drilling tool for use with such a drill bit
US9739095B2 (en) 2011-10-27 2017-08-22 Sandvik Intellectual Property Ab Drill bit having a sunken button and rock drilling tool for use with such a drill bit
EP3059383A1 (en) 2015-02-19 2016-08-24 Sandvik Intellectual Property AB Drill bit for improved transport of cuttings
US10344536B2 (en) 2015-02-19 2019-07-09 Sandvik Intellectual Property Ab Drill bit for improved transport of cuttings
WO2016142534A3 (en) * 2015-03-11 2017-01-05 Tercel Oilfield Products Belgium Sa Downhole tool and bottom hole assembly for running a string in a wellbore
EP3670824A1 (en) 2018-12-17 2020-06-24 Sandvik Mining and Construction Oy Rock drill bit for percussive drilling
WO2020126358A1 (en) 2018-12-17 2020-06-25 Sandvik Mining And Construction Oy Rock drill bit for percussive drilling

Similar Documents

Publication Publication Date Title
US3346060A (en) Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge
US3239431A (en) Rotary well bits
US2719026A (en) Earth boring drill
US3301339A (en) Drill bit with wear resistant material on blade
US1830625A (en) Drill for oil and gas wells
US3126067A (en) Roller bit with inserts
US2297157A (en) Drill
US3388756A (en) Percussion bit
US3536150A (en) Rotary-percussion drill bit
US3433331A (en) Diamond drill bit
US3163243A (en) Underdrilling bit
GB1564369A (en) Earth boring apparatus
GB1276249A (en) Improvements in or relating to percussion drill bits
US3095053A (en) Drill bit
US2579268A (en) Rock drill bit having hard inserts forming cutting edges
US3727705A (en) Drill bit with improved gage compact arrangement
US2818233A (en) Drill bit
US2507439A (en) Drill bit
US2262001A (en) Drill bit
US3659660A (en) Large diameter bit for shallow angle holes
US1703390A (en) Drill
US3283837A (en) Drill bit
US2614811A (en) Drill
US5881829A (en) Rolling-cutter mining bit with relatively soft formation cutting structure
GB1265071A (en)