GB2172632B - Under-reaming of small diameter boreholes - Google Patents

Under-reaming of small diameter boreholes

Info

Publication number
GB2172632B
GB2172632B GB08507507A GB8507507A GB2172632B GB 2172632 B GB2172632 B GB 2172632B GB 08507507 A GB08507507 A GB 08507507A GB 8507507 A GB8507507 A GB 8507507A GB 2172632 B GB2172632 B GB 2172632B
Authority
GB
United Kingdom
Prior art keywords
reaming
under
small diameter
diameter boreholes
boreholes
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
GB08507507A
Other versions
GB8507507D0 (en
GB2172632A (en
Inventor
Michael Thomas Durkan
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.)
Fondedile Foundations Ltd
Original Assignee
Fondedile Foundations Ltd
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 Fondedile Foundations Ltd filed Critical Fondedile Foundations Ltd
Priority to GB08507507A priority Critical patent/GB2172632B/en
Publication of GB8507507D0 publication Critical patent/GB8507507D0/en
Publication of GB2172632A publication Critical patent/GB2172632A/en
Application granted granted Critical
Publication of GB2172632B publication Critical patent/GB2172632B/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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
GB08507507A 1985-03-22 1985-03-22 Under-reaming of small diameter boreholes Expired GB2172632B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08507507A GB2172632B (en) 1985-03-22 1985-03-22 Under-reaming of small diameter boreholes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08507507A GB2172632B (en) 1985-03-22 1985-03-22 Under-reaming of small diameter boreholes

Publications (3)

Publication Number Publication Date
GB8507507D0 GB8507507D0 (en) 1985-05-01
GB2172632A GB2172632A (en) 1986-09-24
GB2172632B true GB2172632B (en) 1988-02-10

Family

ID=10576467

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08507507A Expired GB2172632B (en) 1985-03-22 1985-03-22 Under-reaming of small diameter boreholes

Country Status (1)

Country Link
GB (1) GB2172632B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222621B (en) * 1988-07-22 1992-11-04 Cementation Piling & Found Improvements relating to piles
ES2301321B1 (en) * 2005-12-21 2009-03-01 Universidade Da Coruña MOUTH SYSTEM WITH ARTICULATED CONNECTORS FOR THE EXECUTION OF PUNCTUAL EXTENSIONS INSIDE DRILLS.
ES2411854B1 (en) * 2012-01-03 2014-05-06 Universidade Da Coruña Drill bit for broadening in drills
CN110748299B (en) * 2019-11-08 2021-01-05 西南石油大学 Compound broken super reducing drill bit of natural gas hydrate exploitation
US20220178208A1 (en) * 2020-12-07 2022-06-09 Saudi Arabian Oil Company Wellbore Notching Assembly
CN112719057A (en) * 2020-12-17 2021-04-30 余正雄 Reamer is used in machine parts processing
CN114151012A (en) * 2021-12-07 2022-03-08 中建东设岩土工程有限公司 Jet grouting pile expanding and jet grouting assisting construction and pile diameter detection method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB331945A (en) * 1929-04-19 1930-07-17 Callenders Cable & Const Co Improvements connected with the production of foundations for poles and the like

Also Published As

Publication number Publication date
GB8507507D0 (en) 1985-05-01
GB2172632A (en) 1986-09-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030322