[go: up one dir, main page]

GB2255361B - Drilling assembly - Google Patents

Drilling assembly

Info

Publication number
GB2255361B
GB2255361B GB9208795A GB9208795A GB2255361B GB 2255361 B GB2255361 B GB 2255361B GB 9208795 A GB9208795 A GB 9208795A GB 9208795 A GB9208795 A GB 9208795A GB 2255361 B GB2255361 B GB 2255361B
Authority
GB
United Kingdom
Prior art keywords
drilling assembly
drilling
assembly
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 - Fee Related
Application number
GB9208795A
Other versions
GB9208795D0 (en
GB2255361A (en
Inventor
Hans Paul Hopper
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.)
BP Exploration Operating Co Ltd
Original Assignee
BP Exploration Operating Co 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
Priority claimed from GB919109543A external-priority patent/GB9109543D0/en
Application filed by BP Exploration Operating Co Ltd filed Critical BP Exploration Operating Co Ltd
Priority to GB9208795A priority Critical patent/GB2255361B/en
Publication of GB9208795D0 publication Critical patent/GB9208795D0/en
Publication of GB2255361A publication Critical patent/GB2255361A/en
Application granted granted Critical
Publication of GB2255361B publication Critical patent/GB2255361B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/10—Down-hole impacting means, e.g. hammers continuous unidirectional rotary motion of shaft or drilling pipe effecting consecutive impacts
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
GB9208795A 1991-05-02 1992-04-23 Drilling assembly Expired - Fee Related GB2255361B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9208795A GB2255361B (en) 1991-05-02 1992-04-23 Drilling assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919109543A GB9109543D0 (en) 1991-05-02 1991-05-02 Drilling system
GB9208795A GB2255361B (en) 1991-05-02 1992-04-23 Drilling assembly

Publications (3)

Publication Number Publication Date
GB9208795D0 GB9208795D0 (en) 1992-06-10
GB2255361A GB2255361A (en) 1992-11-04
GB2255361B true GB2255361B (en) 1995-02-22

Family

ID=26298828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9208795A Expired - Fee Related GB2255361B (en) 1991-05-02 1992-04-23 Drilling assembly

Country Status (1)

Country Link
GB (1) GB2255361B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1769131B1 (en) * 2004-07-06 2011-11-16 Tracto-Technik GmbH Drill head for a ground-boring device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB853376A (en) * 1958-02-26 1960-11-09 Nils Torsten Neldas Improvements in devices for boring holes of large diameter in hard ground or rock
GB966286A (en) * 1962-04-09 1964-08-06 Ingersoll Rand Co Drilling apparatus
US4117897A (en) * 1977-06-13 1978-10-03 Lloyd Donald E Drill bit
GB2224056A (en) * 1988-10-24 1990-04-25 Gerald L Fletcher Combustion operated drilling apparatus.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB853376A (en) * 1958-02-26 1960-11-09 Nils Torsten Neldas Improvements in devices for boring holes of large diameter in hard ground or rock
GB966286A (en) * 1962-04-09 1964-08-06 Ingersoll Rand Co Drilling apparatus
US4117897A (en) * 1977-06-13 1978-10-03 Lloyd Donald E Drill bit
GB2224056A (en) * 1988-10-24 1990-04-25 Gerald L Fletcher Combustion operated drilling apparatus.

Also Published As

Publication number Publication date
GB9208795D0 (en) 1992-06-10
GB2255361A (en) 1992-11-04

Similar Documents

Publication Publication Date Title
EP0495579A3 (en) Drilling fluid
GB9111381D0 (en) Centraliser
GB9025444D0 (en) Drilling wells
GB9101576D0 (en) Downhole tool
GB2269734B (en) Poultry-handling assembly
GB2282948B (en) Drill
GB2258258B (en) Drilling fluid
GB2273948B (en) Drilling platforms
GB9109543D0 (en) Drilling system
GB2262555B (en) Subsea well assembly
GB9120854D0 (en) Downhole tool
GB9100353D0 (en) Drill assembly
GB2255361B (en) Drilling assembly
GB2252992B (en) Downhole tool
AU116788S (en) Drill
KR930006905U (en) Drilling hammer
FI96714B (en) Drilling arrangement
GB2259352B (en) An assembly
GB9105605D0 (en) Drilling aid
GB9110025D0 (en) Drill attachment
GB9117830D0 (en) Drill attachment
CA70480S (en) Drill
GB9106676D0 (en) Percussive drilling assembly
GB9321200D0 (en) Drilling attachment
IL101628A0 (en) Drill

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990423