GB774077A - Improvements in or relating to rotary drilling bits for drilling earth formations - Google Patents

Improvements in or relating to rotary drilling bits for drilling earth formations

Info

Publication number
GB774077A
GB774077A GB3291955A GB3291955A GB774077A GB 774077 A GB774077 A GB 774077A GB 3291955 A GB3291955 A GB 3291955A GB 3291955 A GB3291955 A GB 3291955A GB 774077 A GB774077 A GB 774077A
Authority
GB
United Kingdom
Prior art keywords
drilling
bore
relating
earth formations
bits
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
Application number
GB3291955A
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.)
EARL MARSHALL WEAVER
HERBERT JENNINGS HAWTHORNE
Original Assignee
EARL MARSHALL WEAVER
HERBERT JENNINGS HAWTHORNE
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 EARL MARSHALL WEAVER, HERBERT JENNINGS HAWTHORNE filed Critical EARL MARSHALL WEAVER
Priority to GB3291955A priority Critical patent/GB774077A/en
Publication of GB774077A publication Critical patent/GB774077A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

774,077. Earth-boring. HAWTHORNE, H. J., and WEAVER, E. M. Sept. 26, 1952, No. 32919/55. Divided out of 774,075. Class 85. A method of drilling a bore hole in an earth formation by continuous rotation of a drilling bit, which is constantly forced against the bottom of the bore and the cutting edge of which is shaped to drill the bottom of the bore deeper at the centre than at the circumference, consists in cutting the bottom of the bore in a manner forming two or more annular grooves separated by steps 56, and chipping off the step or steps downwardly and inwardly along an inclined line of cleavage 58 Specification 774,076 is referred to.
GB3291955A 1952-09-26 1952-09-26 Improvements in or relating to rotary drilling bits for drilling earth formations Expired GB774077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3291955A GB774077A (en) 1952-09-26 1952-09-26 Improvements in or relating to rotary drilling bits for drilling earth formations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3291955A GB774077A (en) 1952-09-26 1952-09-26 Improvements in or relating to rotary drilling bits for drilling earth formations

Publications (1)

Publication Number Publication Date
GB774077A true GB774077A (en) 1957-05-08

Family

ID=10345956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3291955A Expired GB774077A (en) 1952-09-26 1952-09-26 Improvements in or relating to rotary drilling bits for drilling earth formations

Country Status (1)

Country Link
GB (1) GB774077A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11401795B2 (en) 2019-07-19 2022-08-02 Caterpillar Global Mining Equipment Llc Collar control system for mobile drilling machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11401795B2 (en) 2019-07-19 2022-08-02 Caterpillar Global Mining Equipment Llc Collar control system for mobile drilling machines

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