GB1127395A - Improvements in and relating to deep drills with eccentric bits - Google Patents

Improvements in and relating to deep drills with eccentric bits

Info

Publication number
GB1127395A
GB1127395A GB853267A GB853267A GB1127395A GB 1127395 A GB1127395 A GB 1127395A GB 853267 A GB853267 A GB 853267A GB 853267 A GB853267 A GB 853267A GB 1127395 A GB1127395 A GB 1127395A
Authority
GB
United Kingdom
Prior art keywords
relating
sleeve
bit
eccentric bits
casing
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
GB853267A
Inventor
Hans Ahlgren
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.)
Skanska AB
Original Assignee
Skanska Cementgjuteriet AB
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 Skanska Cementgjuteriet AB filed Critical Skanska Cementgjuteriet AB
Priority to GB853267A priority Critical patent/GB1127395A/en
Publication of GB1127395A publication Critical patent/GB1127395A/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
    • E21B10/64—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

Abstract

1,127,395. Wells &c. AB. SKANSKA. CEMENTGJUTERIET. 22 Feb., 1967, No. 8532/67. Heading E1F. A drill bit 2 which is followed during drilling by a casing 8, has a sleeve 9 having a circular outer cross section which fills the interior of the casing, the sleeve 9 being rotated about a part 10 during drilling so that the most eccentric part of the sleeve is opposite the part 5 of the bit. The part together with a connection 4 may be integral with or screwed into the bit which may be adapted for rotarypercussive or rotary drilling. Specification 963670 is referred to.
GB853267A 1967-02-22 1967-02-22 Improvements in and relating to deep drills with eccentric bits Expired GB1127395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB853267A GB1127395A (en) 1967-02-22 1967-02-22 Improvements in and relating to deep drills with eccentric bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB853267A GB1127395A (en) 1967-02-22 1967-02-22 Improvements in and relating to deep drills with eccentric bits

Publications (1)

Publication Number Publication Date
GB1127395A true GB1127395A (en) 1968-09-18

Family

ID=9854249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB853267A Expired GB1127395A (en) 1967-02-22 1967-02-22 Improvements in and relating to deep drills with eccentric bits

Country Status (1)

Country Link
GB (1) GB1127395A (en)

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