GB9521944D0 - A drilling assembly for use in drilling holes in subsurface formations - Google Patents

A drilling assembly for use in drilling holes in subsurface formations

Info

Publication number
GB9521944D0
GB9521944D0 GBGB9521944.0A GB9521944A GB9521944D0 GB 9521944 D0 GB9521944 D0 GB 9521944D0 GB 9521944 A GB9521944 A GB 9521944A GB 9521944 D0 GB9521944 D0 GB 9521944D0
Authority
GB
United Kingdom
Prior art keywords
drilling
subsurface formations
holes
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.)
Pending
Application number
GBGB9521944.0A
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.)
Camco Drilling Group Ltd
Original Assignee
Camco Drilling Group 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 Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GBGB9521944.0A priority Critical patent/GB9521944D0/en
Publication of GB9521944D0 publication Critical patent/GB9521944D0/en
Priority to EP96307429A priority patent/EP0770759A3/en
Priority to GB9621205A priority patent/GB2306528A/en
Pending 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
    • 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
    • E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
    • 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
    • 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B4/20—Drives for drilling, used in the borehole combined with surface drive
GBGB9521944.0A 1995-10-26 1995-10-26 A drilling assembly for use in drilling holes in subsurface formations Pending GB9521944D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GBGB9521944.0A GB9521944D0 (en) 1995-10-26 1995-10-26 A drilling assembly for use in drilling holes in subsurface formations
EP96307429A EP0770759A3 (en) 1995-10-26 1996-10-11 A drilling assembly for use in drilling holes in subsurface formations
GB9621205A GB2306528A (en) 1995-10-26 1996-10-11 Rotary drilling assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9521944.0A GB9521944D0 (en) 1995-10-26 1995-10-26 A drilling assembly for use in drilling holes in subsurface formations

Publications (1)

Publication Number Publication Date
GB9521944D0 true GB9521944D0 (en) 1996-01-03

Family

ID=10782943

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9521944.0A Pending GB9521944D0 (en) 1995-10-26 1995-10-26 A drilling assembly for use in drilling holes in subsurface formations
GB9621205A Withdrawn GB2306528A (en) 1995-10-26 1996-10-11 Rotary drilling assembly

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9621205A Withdrawn GB2306528A (en) 1995-10-26 1996-10-11 Rotary drilling assembly

Country Status (2)

Country Link
EP (1) EP0770759A3 (en)
GB (2) GB9521944D0 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9521972D0 (en) * 1995-10-26 1996-01-03 Camco Drilling Group Ltd A drilling assembly for drilling holes in subsurface formations
US6280874B1 (en) 1998-12-11 2001-08-28 Schlumberger Technology Corp. Annular pack
AU5146899A (en) * 1999-08-04 2001-03-05 Chunfang Wang A drilling device
EP1291486A1 (en) * 2001-09-07 2003-03-12 Shell Internationale Researchmaatschappij B.V. Rotary coiled tubing
US7712549B2 (en) 2004-11-15 2010-05-11 Dennis Tool Company Drilling tool
US7481282B2 (en) 2005-05-13 2009-01-27 Weatherford/Lamb, Inc. Flow operated orienter
US20090091278A1 (en) * 2007-09-12 2009-04-09 Michael Montois Downhole Load Sharing Motor Assembly
WO2009052042A1 (en) 2007-10-19 2009-04-23 Shell Oil Company Cryogenic treatment of gas
GB2483825B (en) 2008-01-17 2012-06-06 Weatherford Lamb Flow operated orienter
EA019751B1 (en) 2008-04-18 2014-06-30 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Method and system for treating a subsurface hydrocarbon containing formation
FR2935015B1 (en) * 2008-08-18 2010-11-05 Gerard Arsonnet DEVICE FOR PRODUCING A WELL IN A SOIL
US8261832B2 (en) 2008-10-13 2012-09-11 Shell Oil Company Heating subsurface formations with fluids
US8201642B2 (en) 2009-01-21 2012-06-19 Baker Hughes Incorporated Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies
GB0918358D0 (en) 2009-10-20 2009-12-02 Futuretec Ltd Wellbore completion
WO2012161596A1 (en) * 2011-05-24 2012-11-29 Flexidrill Limited Control mechanism
US9506335B1 (en) 2014-05-27 2016-11-29 Gary Smith Multi-directionally rotating downhole drilling assembly and method
CN106014198B (en) * 2016-05-11 2018-09-14 上海安恒环保科技有限公司 A kind of efficient connecting pipes drilling rig

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE881484C (en) * 1944-03-28 1953-06-29 Salzgitter Maschinen Ag Drilling turbine
US4227584A (en) * 1978-12-19 1980-10-14 Driver W B Downhole flexible drive system
US4646855A (en) * 1984-11-06 1987-03-03 Mobil Oil Corporation Method for raising and lowering a drill string in a wellbore during drilling operations
SU1514895A1 (en) * 1987-06-18 1989-10-15 Всесоюзный Научно-Исследовательский Институт Буровой Техники Apparatus for sinking vertical wells
US4862974A (en) * 1988-12-07 1989-09-05 Amoco Corporation Downhole drilling assembly, apparatus and method utilizing drilling motor and stabilizer
GB8912396D0 (en) * 1989-05-30 1989-07-12 Ryall Michael L Drill bit for use in a system for drilling oil and gas wells
US5417292A (en) * 1993-11-22 1995-05-23 Polakoff; Paul Large diameter rock drill

Also Published As

Publication number Publication date
EP0770759A3 (en) 1997-07-02
GB9621205D0 (en) 1996-11-27
EP0770759A2 (en) 1997-05-02
GB2306528A (en) 1997-05-07

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