US3117636A - Casing bit with a removable center - Google Patents

Casing bit with a removable center Download PDF

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Publication number
US3117636A
US3117636A US3476860A US3117636A US 3117636 A US3117636 A US 3117636A US 3476860 A US3476860 A US 3476860A US 3117636 A US3117636 A US 3117636A
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Prior art keywords
sub
casing
body member
bit
portion
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John L Wilcox
John J Jensen
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John L Wilcox
John J Jensen
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    • 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
    • E21B10/64Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • 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
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/20Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes

Description

Jan. 14, 1964 J. L. WILCOX EIAL 3,117,636

CASING BIT WITH A REMOVABLE CENTER Filed June 8, 1960 3 Sheets-Sheet 1 1964 J- L. WILCOX ETA]. 3,117,636

CASING BIT WITH A REMOVABLE CENTER Filed June 8, 1960 FM Y 3 Sheets-Sheet 2 as so 68 John L. Wilcox John J. Jensen INVENTORS 72 Jan. 14, 1964 J. L. WILCOX E'rAL 3,117,636

CASING BIT WITH A REMOVABLE CENTER Filed June 8, 1960 3 Sheets-Sheet 5 WET IT! Fig. 4

John L. W/Ycox John J, Jensen INVENTORS BY WW 3m United States Patent 3,117,636 CASING BET WlTH A REMGVABLE CENTER John L. Wilcox and Eohn J. Jensen, both or R0. Box 569, McMinnville, Greg. Filed .l'uue 8, 1960, Ser. No. 34,768 Claims. (Cl. 175-257) This invention comprises a novel and useful casing bit with a removable center and more particularly pertains to a novel bit adapted to be connected to a casing section to assist in setting the casing and having a removable center through which a core barrel or drill can be passed through the casing bit to obtain core samples.

It is frequently desirable to obtain core samples from or drill conventionally in a formation in which it is necessary to first drill a borehole through an overburden of a relatively loose or unconsolidated material which tends to crumble and fall into the borehole. To overcome this difficulty, the common practice is to install a string of steel casing through the overburden to prevent the Wall of the bore from caving in and blocking further operations. However, after the bore has been drilled into the desired formation from which it is desired to take core samples, a difficulty arises in the operation of inserting or introducing a core drill through the casing string to perform the coring operation.

It is therefore the primary purpose of this invention to provide an apparatus and a means to overcome the foregoing diflculty and to enable a coring or drilling operation of any character to be satisfactorily performed despite the passage of the bore through an overburden having a tendency to cave into the bore.

A further object of the invention is to provide a means whereby the casing itself may be provided with a drill bit to facilitate the introduction of the casing through the overburden down to the desired formation to be cored together with means facilitating the operating of a coring drill once the casing and its drill bit have been placed in the desired position for corin Yet another object or" the invention is to provide an apparatus and a means whereby the casing string may be provided with a drill bit on the lower end thereof to facilitate the insertion of the casing string to any desired position, which bit shall include an outer portion relatively fixedly secured to the casing and an inner portion which may be removed from the interior of the casing string after the casing string has been put in the proper posi tion to thereby provide a passageway through the center of the casing bit through which the core drill may be inserted and operated.

Still another object of the invention is to provide an apparatus and a method whereby a casing with a drill bit secured thereto may be effectively placed into the desired position with respect to a formation to be cored; the central portion of the drill bit may be removed and a coring or conventional drill operated therethrough to effect the desired coring or drilling operation; and whereby after the coring or drilling operation has been finished the drill, coring drill and its barrel may be recovered through the casing string and the casing string itself with too casing bit thereon may likewise be recovered.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is a fragmentary View in vertical central section through a portion of a formation illustrating the manner in which the present invention is applied to a casing string and is operated to effect the positioning of the latter in proper relation to a formation to be cored;

FIGURE 2 is a view similar to FIGURE 1 but showing the manner in which the central portion of the casing drill bit is removed in order to permit the use of a coring drill therethrough;

FIGURE 3 is an enlarged View in vertical central section through the lower end of the casing string showing the casing bit attached thereto togther with the removable central portion of the casing bit and the means for detachably mounting the latter upon the casing drill bit;

FIGURE 4 is a view in elevation, parts being broken away and shown in vertical section, of a somewhat modified construction of casing bit with a relatively fixed outer portion and a removable center portion; and

FIGURE 5 is a bott n1 plan view of the bit or" FlG- URE 4.

Referring first to FlGURES l and 2 it will be seen that the numeral 1% designates an overburden through which a bore 12 must be drilled in order to obtain access to a formation 14 from whi h it is desires to take a series of core samples. The overburden is of a character which will readily crumble, collapse or cave into the bore 12 so as to hnpose difiiculties in the operation of a coring drill if the well bore is not cased.

Shown at 15 is a conventional string of easing which is to be set in the overburden 1b and down into contact with the formation 14 in order to prevent caving of the overburden it into the well bore.

Referring now and in particular to FlGUlZE 3 it will be observed that the lower section of the casing string 16 has secured to the exterior thereof a drill bit in the usual manner. This drill bit is hollow, and at the lower end thereof is provided with the usual drill teeth 25?. The bit is of such size that when mounted upon the casing string the entire casing string may be rotated and thus consti ute a drilling string whereby the casing string will be caused to bore its way through the overburden 1% until the drill bit 2% is in contact with the formation 14 to be cored. As will be understood, during this operation the presence of the casing string prevents the ingress of the overburden or other foreign matter into the bore during this operation.

The drill bit 13 which is attached to the end of the casing string in accordance with this invention is of a particular construction. Thus, at tirelower end of the drill bit and extending upwardly therefrom into about th midportion of the bit or higher if desired is an axial bore 22. At the upper end, this bore is provided with an upwardly and outwardly flaring portion which is internally threaded and which at the upper end thereof terminates in an annular shoulder surface or shoulder as which is perpendicular to the 10 'tudinal axis of the drill bit. Rising from the outer penmeter of the shoulder 26 is the internally threaded portion 23 by wlL'ch the drill bit is secured to the exterior of the casing 16. It will thus be seen that as so far described a continuous passageway is provided from the interior of the casing through the drill bit 18 by means of the bores 24 and 22.

Removably seated in the threaded bore 24 is an internal connector sub 3:). This latter consists of an elongated body having a diametrically enlarged upper portion 32 provided with an annular shoulder 34 on its lower face which mates with and abuts against the shoulder 26 of the drill bit 1%. The upper surface of the portion 32 is provided with a conical dish-shaped surface 36 from the central portion of which extends downwardly an axial bore 33 so that the surface 36 constitutes a guide surface to direct a drill string into this bore as hereinafter set forth. The bore 33 itself is provid d with a series of right hand threads as.

Depending from the upper portion 32, the body 3% has a downwardly tapering main portion 52 whose external surface is threaded to engage with the threads 24-. The

s,117,ese

threaded engagement of the portion 42 with the threads 24 is by means of a left hand thread for a purpse to be subsequently apparent.

Depending from the threaded portion 40 of the bore 33 is a diametrically reduced axial bore 4 which extends entirely to the lower face of the internal sub 3%. The lower portion of the body 39 is cylindrical in shape as shown at 46 and is provided with a conical upwardly convergent bore 43 provided therein with right hand internal threads 5% and at its upper end terminating in an annular flat shoulder 52. As will be observed, the exterior surface of he cylindrical lower portion 46 is spaced rrom the adjacent walls of the bore 22 to provide an annular clearance therebe.ween and a plurality of drilling fluid circulating passages as at 54 communicating this space with the interior of the bore 44.

Secured to, carried by and depending from the cylindrical portion 46 or" the internal sub 34} is a center drill bit This latter has a bore 62 opening upwardly from the botom surface thereof which bore merges into a diametrically reduced bore d4 which when the parts are assembled forms a continuation of the bore 44. Rising bove the lower portion of the bit 6t is an upwardly convergent conical extension 625 having external threads thereon which engage with the threads 58. This threaded engagement is a right hand thread for a purpose to be subsequently apparent. At its upper end, the tapering conical portion 66 has a flat annular top surface 79 which is slightly spaced from the surface 52 previously mentioned.

Drill teeth or drilling elements of any desired character are secured to and carried by the drill bit 6d at its lower end. illustrated are types of rotary cutters '72 although it be understood that any desired types of cutters can be employed.

With removable center bit at assembled in position as shown in FEGURE 3 in the main composite bit assembly 18, there is provided a bit extending across the entire cross-sectional area of the casing to effectively penetrate the overburden ill during rotation of the casing to thereby cause the casing to penetrate through the same and as shown in FIGURES l and 2 seat upon the formation 14 which is to be cored. During this operation drill fluid can be circulated by means of a fiuid supply to the bore 38 and through the bore 44 and ducts 54 to the annular space between the inner removable drill bit and the outer bit 13. The entire device as shown in FIGURE 3 operates as a unit upon rotation of the casing which in turn drives the bit 13 and through engagement with the latter by the threaded engagement 24 drives the internal sub 3%) and the inner removable drill bit 6% carried thereby. Thus the casing is readily drilled fnrough the overburden 1'9 and to the desired position relative to the formation to be cored.

After the casing has been installed in the position shown in FIGURES l and 2, and is ready to begin the coring operation, it is merely necessary to introduce a drilling string or the like 78, and engage the same in the threads of the bore 33, if the drilling string is not already in place. Thereupon the drilling string can be rotated in a reverse direction in which the drilling string will be firmly secured to the internal sub 3% and will thus disconnect this sub at the threaded engagement 24 from the outer portion of the drill bit 1% so that the inner sub carrying with it the removable inner bit 61 may be withdrawn through the casing string to the surface. This operation is effected by virtue of the clearance between the outer circumference of the upper portion 32 of the inner sub and the internal Wall of the casing 16, the tapering connection between the portion 42 of the sub and the threaded bore of the upper end of the bit 1%, and the annular clearance between the cylindrical bore portion 46 of the sub, and the exterior surface of the inner drill bit 66 with the bore 22.

After the internal sub and removable inner bit have been withdrawn as a unit from the outer portion of the casing bit 18, a conventional coring drill may be attached to a drilling string inserted through the casing, past through the bore 22 and perform its coring operations. After the desired core samples have been obtained, and it is desired to withdraw from the hole, the coring drill may be first Withdrawn and thereafter the casing may be pulled. Thus there is considerable saving in the time required both to eilect the coring operation after a casing has been inserted and seated adjacent the formation to be cored as Well as in the coring operation itself and the withdrawal of the coring tool and/ or the casing string.

The construction of FIGURES 4 and 5 is identical to that of FEGURE 3 except that an outer bit 38 is provided with a different type of bit teeth, there being shown thus roller bits 8% carried by the head portion S2 of tne outer bit 18 as well as by the removable inner bit fill previously mentioned. Obviously different types of bits can be employed for different types of formations to be cored or drilled.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A drill bit which comprises a body member having an aperture formed centrally therein, said aperture having upper and lower portions, cutting means secured to said body member at one end thereof, means formed on the opposite end of said body member for securing casing thereto, a sub located within the aperture formed in said body member, said sub having an aperture formed axially therein and a lower portion of said sub being of reduced cross section to form an annulus between said body member and said portion of the sub, means formed at the upper portion of said aperture in said body member for releasably securing said sub to said body member, means in the upper portion of said sub for securing a drill stem thereto for removal of said sub from said body member, an interior cutting tool secured to the lower end of said sub, said tool having an axial bore formed therein in communication with said aperture in the sub, at least a portion of said cutting tool extending into the aperture formed in the body member to form an annulus therein in communication with the annulus formed between said body member and the lower portion of the sub, and a duct in communication with said annulus and with the aperture in said sub and with the bore of said cutting tool.

2. The bit defined in claim 1 wherein the means for releasably securing the sub to said body member comprises left hand threads and wherein the means for securing a drill stem to said sub comprises right hand threads.

3. The bit defined in claim 2 wherein a drill stem guide is formed in the upper portion of said sub.

4. The bit defined in claim 3 wherein said guide comprises a frusto-conical depression.

5. The bit defined in claim 4 wherein the upper portion of the aperture formed in said body member is tapered downwardly.

References Cited in the file of this patent UNITED STATES PATENTS

Claims (1)

1. A DRILL BIT WHICH COMPRISES A BODY MEMBER HAVING AN APERTURE FORMED CENTRALLY THEREIN, SAID APERTURE HAVING UPPER AND LOWER PORTIONS, CUTTING MEANS SECURED TO SAID BODY MEMBER AT ONE END THEREOF, MEANS FORMED ON THE OPPOSITE END OF SAID BODY MEMBER FOR SECURING CASING THERETO, A SUB LOCATED WITHIN THE APERTURE FORMED IN SAID BODY MEMBER, SAID SUB HAVING AN APERTURE FORMED AXIALLY THEREIN AND A LOWER PORTION OF SAID SUB BEING OF REDUCED CROSS SECTION TO FORM AN ANNULUS BETWEEN SAID BODY MEMBER AND SAID PORTION OF THE SUB, MEANS FORMED AT THE UPPER PORTION OF SAID APERTURE IN SAID BODY MEMBER FOR RELEASABLY SECURING SAID SUB TO SAID BODY MEMBER, MEANS IN THE UPPER PORTION OF SAID SUB FOR SECURING A DRILL STEM THERETO FOR REMOVAL OF SAID SUB FROM SAID BODY MEMBER, AN INTERIOR CUTTING TOOL SECURED TO THE LOWER END OF SAID SUB, SAID TOOL HAVING AN AXIAL BORE FORMED THEREIN IN COMMUNICATION WITH SAID APERTURE IN THE SUB, AT LEAST A PORTION OF SAID CUTTING TOOL EXTENDING INTO THE APERTURE FORMED IN
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Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409081A (en) * 1967-05-18 1968-11-05 Brown Oil Tools Well tool apparatus and method of operation
US3833071A (en) * 1973-05-03 1974-09-03 R Koosman Apparatus and process for soil dewatering
US4544041A (en) * 1983-10-25 1985-10-01 Rinaldi Roger E Well casing inserting and well bore drilling method and means
EP0353168A1 (en) * 1988-07-28 1990-01-31 Cogema Method and drilling machine for examination and exploitation of the subsoil
US5950742A (en) * 1997-04-15 1999-09-14 Camco International Inc. Methods and related equipment for rotary drilling
US20020189863A1 (en) * 1999-12-22 2002-12-19 Mike Wardley Drilling bit for drilling while running casing
WO2003004825A1 (en) * 2001-07-06 2003-01-16 Shell Internationale Research Maatschappij B.V. Well drilling bit
US20030141111A1 (en) * 2000-08-01 2003-07-31 Giancarlo Pia Drilling method
US20030164251A1 (en) * 2000-04-28 2003-09-04 Tulloch Rory Mccrae Expandable apparatus for drift and reaming borehole
US20030173073A1 (en) * 2000-04-17 2003-09-18 Weatherford/Lamb, Inc. Top drive casing system
US20030217865A1 (en) * 2002-03-16 2003-11-27 Simpson Neil Andrew Abercrombie Bore lining and drilling
US20040069500A1 (en) * 2001-05-17 2004-04-15 Haugen David M. Apparatus and methods for tubular makeup interlock
US20040108142A1 (en) * 1994-10-14 2004-06-10 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040112646A1 (en) * 1994-10-14 2004-06-17 Vail William Banning Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040118613A1 (en) * 1994-10-14 2004-06-24 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040123984A1 (en) * 1994-10-14 2004-07-01 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040129456A1 (en) * 1994-10-14 2004-07-08 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040140128A1 (en) * 1994-10-14 2004-07-22 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040173357A1 (en) * 1998-08-24 2004-09-09 Weatherford/Lamb, Inc. Apparatus for connecting tublars using a top drive
US20040194965A1 (en) * 1998-12-24 2004-10-07 Weatherford/Lamb, Inc. Apparatus and method for facilitating the connection of tubulars using a top drive
US20040216892A1 (en) * 2003-03-05 2004-11-04 Giroux Richard L Drilling with casing latch
US20040216925A1 (en) * 1998-12-22 2004-11-04 Weatherford/Lamb, Inc. Method and apparatus for drilling and lining a wellbore
US20040216924A1 (en) * 2003-03-05 2004-11-04 Bernd-Georg Pietras Casing running and drilling system
US20040221997A1 (en) * 1999-02-25 2004-11-11 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
US20040226751A1 (en) * 2003-02-27 2004-11-18 Mckay David Drill shoe
US20040244992A1 (en) * 2003-03-05 2004-12-09 Carter Thurman B. Full bore lined wellbores
US20040245020A1 (en) * 2000-04-13 2004-12-09 Weatherford/Lamb, Inc. Apparatus and methods for drilling a wellbore using casing
US20040251025A1 (en) * 2003-01-30 2004-12-16 Giroux Richard L. Single-direction cementing plug
US20040251055A1 (en) * 2002-07-29 2004-12-16 Weatherford/Lamb, Inc. Adjustable rotating guides for spider or elevator
US20040251050A1 (en) * 1997-09-02 2004-12-16 Weatherford/Lamb, Inc. Method and apparatus for drilling with casing
US20040262013A1 (en) * 2002-10-11 2004-12-30 Weatherford/Lamb, Inc. Wired casing
US20050000691A1 (en) * 2000-04-17 2005-01-06 Weatherford/Lamb, Inc. Methods and apparatus for handling and drilling with tubulars or casing
US20050000696A1 (en) * 2003-04-04 2005-01-06 Mcdaniel Gary Method and apparatus for handling wellbore tubulars
US20050121232A1 (en) * 1998-12-22 2005-06-09 Weatherford/Lamb, Inc. Downhole filter
US20050194188A1 (en) * 2003-10-03 2005-09-08 Glaser Mark C. Method of drilling and completing multiple wellbores inside a single caisson
US20050205250A1 (en) * 2002-10-11 2005-09-22 Weatherford/Lamb, Inc. Apparatus and methods for drilling with casing
US20050217858A1 (en) * 2002-12-13 2005-10-06 Weatherford/Lamb, Inc. Apparatus and method of drilling with casing
US20050269105A1 (en) * 1998-07-22 2005-12-08 Weatherford/Lamb, Inc. Apparatus for facilitating the connection of tubulars using a top drive
US20060011353A1 (en) * 1998-12-24 2006-01-19 Weatherford/Lamb, Inc. Apparatus and methods for facilitating the connection of tubulars using a top drive
US20060021801A1 (en) * 2004-02-17 2006-02-02 John Hughes Retrievable center bit
US20060032638A1 (en) * 2004-07-30 2006-02-16 Giroux Richard L Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly
US7036610B1 (en) 1994-10-14 2006-05-02 Weatherford / Lamb, Inc. Apparatus and method for completing oil and gas wells
US20060124306A1 (en) * 2000-01-19 2006-06-15 Vail William B Iii Installation of one-way valve after removal of retrievable drill bit to complete oil and gas wells
US20060196695A1 (en) * 2002-12-13 2006-09-07 Giroux Richard L Deep water drilling with casing
US7131505B2 (en) 2002-12-30 2006-11-07 Weatherford/Lamb, Inc. Drilling with concentric strings of casing
US7219744B2 (en) 1998-08-24 2007-05-22 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US7228901B2 (en) 1994-10-14 2007-06-12 Weatherford/Lamb, Inc. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7284617B2 (en) 2004-05-20 2007-10-23 Weatherford/Lamb, Inc. Casing running head
US20070261850A1 (en) * 2006-05-12 2007-11-15 Giroux Richard L Stage cementing methods used in casing while drilling
US20070267221A1 (en) * 2006-05-22 2007-11-22 Giroux Richard L Methods and apparatus for drilling with casing
US7509722B2 (en) 1997-09-02 2009-03-31 Weatherford/Lamb, Inc. Positioning and spinning device
US7617866B2 (en) 1998-08-24 2009-11-17 Weatherford/Lamb, Inc. Methods and apparatus for connecting tubulars using a top drive
US7631705B1 (en) * 2007-03-20 2009-12-15 The United States Of America As Represented By The Secretary Of The Interior Enhanced screen auger sampling system
US7650944B1 (en) 2003-07-11 2010-01-26 Weatherford/Lamb, Inc. Vessel for well intervention
US20100096187A1 (en) * 2006-09-14 2010-04-22 Storm Jr Bruce H Through drillstring logging systems and methods
US7730965B2 (en) 2002-12-13 2010-06-08 Weatherford/Lamb, Inc. Retractable joint and cementing shoe for use in completing a wellbore
US20100193250A1 (en) * 2009-01-30 2010-08-05 Tesco Corporation Cutting Structure for Casing Drilling Underreamer
US20100258354A1 (en) * 2009-04-14 2010-10-14 Tesco Corporation Jetted Underreamer Assembly
USRE42877E1 (en) 2003-02-07 2011-11-01 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
EP2340347A4 (en) * 2008-09-05 2016-04-27 Schlumberger Holdings Apparatus and system to allow tool passage ahead of a bit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US443070A (en) * 1890-12-16 chapman
US1142460A (en) * 1914-04-22 1915-06-08 John W Roby Drill-bit clutch.
US1295969A (en) * 1918-11-18 1919-03-04 Robert E Carmichael Rotary boring-drill.
US1449533A (en) * 1923-03-27 Well-drilling apparatus
US1571931A (en) * 1923-01-09 1926-02-09 Walter L Church Collapsible drill bit
US1585540A (en) * 1923-12-26 1926-05-18 F C Dougherty Detachable rotary bit
US1607791A (en) * 1926-03-03 1926-11-23 Hattie E Dougherty Detachable rotary bit
US2314352A (en) * 1940-11-23 1943-03-23 Reed Roller Bit Co Coring apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US443070A (en) * 1890-12-16 chapman
US1449533A (en) * 1923-03-27 Well-drilling apparatus
US1142460A (en) * 1914-04-22 1915-06-08 John W Roby Drill-bit clutch.
US1295969A (en) * 1918-11-18 1919-03-04 Robert E Carmichael Rotary boring-drill.
US1571931A (en) * 1923-01-09 1926-02-09 Walter L Church Collapsible drill bit
US1585540A (en) * 1923-12-26 1926-05-18 F C Dougherty Detachable rotary bit
US1607791A (en) * 1926-03-03 1926-11-23 Hattie E Dougherty Detachable rotary bit
US2314352A (en) * 1940-11-23 1943-03-23 Reed Roller Bit Co Coring apparatus

Cited By (115)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409081A (en) * 1967-05-18 1968-11-05 Brown Oil Tools Well tool apparatus and method of operation
US3833071A (en) * 1973-05-03 1974-09-03 R Koosman Apparatus and process for soil dewatering
US4544041A (en) * 1983-10-25 1985-10-01 Rinaldi Roger E Well casing inserting and well bore drilling method and means
EP0353168A1 (en) * 1988-07-28 1990-01-31 Cogema Method and drilling machine for examination and exploitation of the subsoil
FR2634818A1 (en) * 1988-07-28 1990-02-02 Cogema Method and drilling apparatus for the study and exploitation of the subsoil
WO1990001102A1 (en) * 1988-07-28 1990-02-08 Cogema Drilling device and method for the study and exploitation of the underground
US5125464A (en) * 1988-07-28 1992-06-30 Cogema Drilling device for the study and exploitation of the subsoil
US7234542B2 (en) 1994-10-14 2007-06-26 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20060201711A1 (en) * 1994-10-14 2006-09-14 Vail William B Iii Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7165634B2 (en) 1994-10-14 2007-01-23 Weatherford/Lamb, Inc. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7100710B2 (en) 1994-10-14 2006-09-05 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20060185906A1 (en) * 1994-10-14 2006-08-24 Vail William B Iii Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7048050B2 (en) 1994-10-14 2006-05-23 Weatherford/Lamb, Inc. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7040420B2 (en) 1994-10-14 2006-05-09 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7108084B2 (en) 1994-10-14 2006-09-19 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040108142A1 (en) * 1994-10-14 2004-06-10 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040112646A1 (en) * 1994-10-14 2004-06-17 Vail William Banning Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040118613A1 (en) * 1994-10-14 2004-06-24 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7036610B1 (en) 1994-10-14 2006-05-02 Weatherford / Lamb, Inc. Apparatus and method for completing oil and gas wells
US20040123984A1 (en) * 1994-10-14 2004-07-01 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040129456A1 (en) * 1994-10-14 2004-07-08 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040140128A1 (en) * 1994-10-14 2004-07-22 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7013997B2 (en) 1994-10-14 2006-03-21 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7228901B2 (en) 1994-10-14 2007-06-12 Weatherford/Lamb, Inc. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20040124015A1 (en) * 1994-10-14 2004-07-01 Vail William Banning Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7147068B2 (en) 1994-10-14 2006-12-12 Weatherford / Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US5950742A (en) * 1997-04-15 1999-09-14 Camco International Inc. Methods and related equipment for rotary drilling
US20040251050A1 (en) * 1997-09-02 2004-12-16 Weatherford/Lamb, Inc. Method and apparatus for drilling with casing
US7140445B2 (en) 1997-09-02 2006-11-28 Weatherford/Lamb, Inc. Method and apparatus for drilling with casing
US7509722B2 (en) 1997-09-02 2009-03-31 Weatherford/Lamb, Inc. Positioning and spinning device
US7137454B2 (en) 1998-07-22 2006-11-21 Weatherford/Lamb, Inc. Apparatus for facilitating the connection of tubulars using a top drive
US20050269105A1 (en) * 1998-07-22 2005-12-08 Weatherford/Lamb, Inc. Apparatus for facilitating the connection of tubulars using a top drive
US7219744B2 (en) 1998-08-24 2007-05-22 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US7617866B2 (en) 1998-08-24 2009-11-17 Weatherford/Lamb, Inc. Methods and apparatus for connecting tubulars using a top drive
US20040173357A1 (en) * 1998-08-24 2004-09-09 Weatherford/Lamb, Inc. Apparatus for connecting tublars using a top drive
US7090021B2 (en) 1998-08-24 2006-08-15 Bernd-Georg Pietras Apparatus for connecting tublars using a top drive
US7117957B2 (en) 1998-12-22 2006-10-10 Weatherford/Lamb, Inc. Methods for drilling and lining a wellbore
US7188687B2 (en) 1998-12-22 2007-03-13 Weatherford/Lamb, Inc. Downhole filter
US20050121232A1 (en) * 1998-12-22 2005-06-09 Weatherford/Lamb, Inc. Downhole filter
US20040216925A1 (en) * 1998-12-22 2004-11-04 Weatherford/Lamb, Inc. Method and apparatus for drilling and lining a wellbore
US20040194965A1 (en) * 1998-12-24 2004-10-07 Weatherford/Lamb, Inc. Apparatus and method for facilitating the connection of tubulars using a top drive
US7128161B2 (en) 1998-12-24 2006-10-31 Weatherford/Lamb, Inc. Apparatus and methods for facilitating the connection of tubulars using a top drive
US7213656B2 (en) 1998-12-24 2007-05-08 Weatherford/Lamb, Inc. Apparatus and method for facilitating the connection of tubulars using a top drive
US20060011353A1 (en) * 1998-12-24 2006-01-19 Weatherford/Lamb, Inc. Apparatus and methods for facilitating the connection of tubulars using a top drive
US20040221997A1 (en) * 1999-02-25 2004-11-11 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
US7311148B2 (en) 1999-02-25 2007-12-25 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
US7216727B2 (en) 1999-12-22 2007-05-15 Weatherford/Lamb, Inc. Drilling bit for drilling while running casing
US20020189863A1 (en) * 1999-12-22 2002-12-19 Mike Wardley Drilling bit for drilling while running casing
US20060124306A1 (en) * 2000-01-19 2006-06-15 Vail William B Iii Installation of one-way valve after removal of retrievable drill bit to complete oil and gas wells
US7334650B2 (en) 2000-04-13 2008-02-26 Weatherford/Lamb, Inc. Apparatus and methods for drilling a wellbore using casing
US20070119626A9 (en) * 2000-04-13 2007-05-31 Weatherford/Lamb, Inc. Apparatus and methods for drilling a wellbore using casing
US20070056774A9 (en) * 2000-04-13 2007-03-15 Weatherford/Lamb, Inc. Apparatus and methods for drilling a wellbore using casing
US20040245020A1 (en) * 2000-04-13 2004-12-09 Weatherford/Lamb, Inc. Apparatus and methods for drilling a wellbore using casing
US7712523B2 (en) 2000-04-17 2010-05-11 Weatherford/Lamb, Inc. Top drive casing system
US20050000691A1 (en) * 2000-04-17 2005-01-06 Weatherford/Lamb, Inc. Methods and apparatus for handling and drilling with tubulars or casing
US20030173073A1 (en) * 2000-04-17 2003-09-18 Weatherford/Lamb, Inc. Top drive casing system
US7325610B2 (en) 2000-04-17 2008-02-05 Weatherford/Lamb, Inc. Methods and apparatus for handling and drilling with tubulars or casing
US7100713B2 (en) 2000-04-28 2006-09-05 Weatherford/Lamb, Inc. Expandable apparatus for drift and reaming borehole
US20030164251A1 (en) * 2000-04-28 2003-09-04 Tulloch Rory Mccrae Expandable apparatus for drift and reaming borehole
US7093675B2 (en) 2000-08-01 2006-08-22 Weatherford/Lamb, Inc. Drilling method
US20030141111A1 (en) * 2000-08-01 2003-07-31 Giancarlo Pia Drilling method
US6938697B2 (en) 2001-05-17 2005-09-06 Weatherford/Lamb, Inc. Apparatus and methods for tubular makeup interlock
US20040173358A1 (en) * 2001-05-17 2004-09-09 Weatherford/Lamb, Inc. Apparatus and methods for tubular makeup interlock
US7073598B2 (en) 2001-05-17 2006-07-11 Weatherford/Lamb, Inc. Apparatus and methods for tubular makeup interlock
US20040069500A1 (en) * 2001-05-17 2004-04-15 Haugen David M. Apparatus and methods for tubular makeup interlock
WO2003004825A1 (en) * 2001-07-06 2003-01-16 Shell Internationale Research Maatschappij B.V. Well drilling bit
US7140454B2 (en) 2001-07-06 2006-11-28 Shell Oil Company Well drilling bit
US20040238224A1 (en) * 2001-07-06 2004-12-02 Runia Douwe Johannes Well drilling bit
US7004264B2 (en) 2002-03-16 2006-02-28 Weatherford/Lamb, Inc. Bore lining and drilling
US20030217865A1 (en) * 2002-03-16 2003-11-27 Simpson Neil Andrew Abercrombie Bore lining and drilling
US6994176B2 (en) 2002-07-29 2006-02-07 Weatherford/Lamb, Inc. Adjustable rotating guides for spider or elevator
US20040251055A1 (en) * 2002-07-29 2004-12-16 Weatherford/Lamb, Inc. Adjustable rotating guides for spider or elevator
US7303022B2 (en) 2002-10-11 2007-12-04 Weatherford/Lamb, Inc. Wired casing
US20040262013A1 (en) * 2002-10-11 2004-12-30 Weatherford/Lamb, Inc. Wired casing
US20050205250A1 (en) * 2002-10-11 2005-09-22 Weatherford/Lamb, Inc. Apparatus and methods for drilling with casing
US7090023B2 (en) 2002-10-11 2006-08-15 Weatherford/Lamb, Inc. Apparatus and methods for drilling with casing
US7083005B2 (en) 2002-12-13 2006-08-01 Weatherford/Lamb, Inc. Apparatus and method of drilling with casing
US7938201B2 (en) 2002-12-13 2011-05-10 Weatherford/Lamb, Inc. Deep water drilling with casing
US20100139978A9 (en) * 2002-12-13 2010-06-10 Giroux Richard L Deep water drilling with casing
US20060196695A1 (en) * 2002-12-13 2006-09-07 Giroux Richard L Deep water drilling with casing
US20050217858A1 (en) * 2002-12-13 2005-10-06 Weatherford/Lamb, Inc. Apparatus and method of drilling with casing
US7730965B2 (en) 2002-12-13 2010-06-08 Weatherford/Lamb, Inc. Retractable joint and cementing shoe for use in completing a wellbore
US7131505B2 (en) 2002-12-30 2006-11-07 Weatherford/Lamb, Inc. Drilling with concentric strings of casing
US20040251025A1 (en) * 2003-01-30 2004-12-16 Giroux Richard L. Single-direction cementing plug
US7128154B2 (en) 2003-01-30 2006-10-31 Weatherford/Lamb, Inc. Single-direction cementing plug
USRE42877E1 (en) 2003-02-07 2011-11-01 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
US20040226751A1 (en) * 2003-02-27 2004-11-18 Mckay David Drill shoe
US7096982B2 (en) 2003-02-27 2006-08-29 Weatherford/Lamb, Inc. Drill shoe
US7360594B2 (en) 2003-03-05 2008-04-22 Weatherford/Lamb, Inc. Drilling with casing latch
US20040216924A1 (en) * 2003-03-05 2004-11-04 Bernd-Georg Pietras Casing running and drilling system
US20040216892A1 (en) * 2003-03-05 2004-11-04 Giroux Richard L Drilling with casing latch
US7191840B2 (en) 2003-03-05 2007-03-20 Weatherford/Lamb, Inc. Casing running and drilling system
US20040244992A1 (en) * 2003-03-05 2004-12-09 Carter Thurman B. Full bore lined wellbores
US7413020B2 (en) 2003-03-05 2008-08-19 Weatherford/Lamb, Inc. Full bore lined wellbores
US7370707B2 (en) 2003-04-04 2008-05-13 Weatherford/Lamb, Inc. Method and apparatus for handling wellbore tubulars
US20050000696A1 (en) * 2003-04-04 2005-01-06 Mcdaniel Gary Method and apparatus for handling wellbore tubulars
US7650944B1 (en) 2003-07-11 2010-01-26 Weatherford/Lamb, Inc. Vessel for well intervention
US20050194188A1 (en) * 2003-10-03 2005-09-08 Glaser Mark C. Method of drilling and completing multiple wellbores inside a single caisson
US7264067B2 (en) 2003-10-03 2007-09-04 Weatherford/Lamb, Inc. Method of drilling and completing multiple wellbores inside a single caisson
US20060021801A1 (en) * 2004-02-17 2006-02-02 John Hughes Retrievable center bit
US7520343B2 (en) * 2004-02-17 2009-04-21 Tesco Corporation Retrievable center bit
US7284617B2 (en) 2004-05-20 2007-10-23 Weatherford/Lamb, Inc. Casing running head
US7503397B2 (en) 2004-07-30 2009-03-17 Weatherford/Lamb, Inc. Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly
US20060032638A1 (en) * 2004-07-30 2006-02-16 Giroux Richard L Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly
US20070261850A1 (en) * 2006-05-12 2007-11-15 Giroux Richard L Stage cementing methods used in casing while drilling
US7857052B2 (en) 2006-05-12 2010-12-28 Weatherford/Lamb, Inc. Stage cementing methods used in casing while drilling
US20070267221A1 (en) * 2006-05-22 2007-11-22 Giroux Richard L Methods and apparatus for drilling with casing
US8276689B2 (en) 2006-05-22 2012-10-02 Weatherford/Lamb, Inc. Methods and apparatus for drilling with casing
US8443915B2 (en) * 2006-09-14 2013-05-21 Schlumberger Technology Corporation Through drillstring logging systems and methods
US20100096187A1 (en) * 2006-09-14 2010-04-22 Storm Jr Bruce H Through drillstring logging systems and methods
US7631705B1 (en) * 2007-03-20 2009-12-15 The United States Of America As Represented By The Secretary Of The Interior Enhanced screen auger sampling system
EP2340347A4 (en) * 2008-09-05 2016-04-27 Schlumberger Holdings Apparatus and system to allow tool passage ahead of a bit
US20100193250A1 (en) * 2009-01-30 2010-08-05 Tesco Corporation Cutting Structure for Casing Drilling Underreamer
US8113301B2 (en) 2009-04-14 2012-02-14 Tesco Corporation Jetted underreamer assembly
US20100258354A1 (en) * 2009-04-14 2010-10-14 Tesco Corporation Jetted Underreamer Assembly

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