GB2110746B - Improvements in diamond drill bits for drilling bore holes in earth formations - Google Patents

Improvements in diamond drill bits for drilling bore holes in earth formations

Info

Publication number
GB2110746B
GB2110746B GB08300677A GB8300677A GB2110746B GB 2110746 B GB2110746 B GB 2110746B GB 08300677 A GB08300677 A GB 08300677A GB 8300677 A GB8300677 A GB 8300677A GB 2110746 B GB2110746 B GB 2110746B
Authority
GB
United Kingdom
Prior art keywords
drill bits
bore holes
earth formations
diamond drill
drilling bore
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
GB08300677A
Other versions
GB8300677D0 (en
GB2110746A (en
Inventor
David S Rowley
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.)
Norton Christensen Inc
Original Assignee
Christensen Inc
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
Priority claimed from GB7935948A external-priority patent/GB2060735B/en
Application filed by Christensen Inc filed Critical Christensen Inc
Priority to GB08300677A priority Critical patent/GB2110746B/en
Publication of GB8300677D0 publication Critical patent/GB8300677D0/en
Publication of GB2110746A publication Critical patent/GB2110746A/en
Application granted granted Critical
Publication of GB2110746B publication Critical patent/GB2110746B/en
Expired legal-status Critical Current

Links

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
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • 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
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
GB08300677A 1979-10-16 1983-01-11 Improvements in diamond drill bits for drilling bore holes in earth formations Expired GB2110746B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08300677A GB2110746B (en) 1979-10-16 1983-01-11 Improvements in diamond drill bits for drilling bore holes in earth formations

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7935948A GB2060735B (en) 1979-10-16 1979-10-16 Diamond drill bits for drilling bore holes in earth formations
GB08300677A GB2110746B (en) 1979-10-16 1983-01-11 Improvements in diamond drill bits for drilling bore holes in earth formations

Publications (3)

Publication Number Publication Date
GB8300677D0 GB8300677D0 (en) 1983-02-09
GB2110746A GB2110746A (en) 1983-06-22
GB2110746B true GB2110746B (en) 1983-11-23

Family

ID=26273240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08300677A Expired GB2110746B (en) 1979-10-16 1983-01-11 Improvements in diamond drill bits for drilling bore holes in earth formations

Country Status (1)

Country Link
GB (1) GB2110746B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104487647A (en) * 2012-03-02 2015-04-01 国民油井华高有限公司 Inner gauge ring drill bit

Also Published As

Publication number Publication date
GB8300677D0 (en) 1983-02-09
GB2110746A (en) 1983-06-22

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971016