GB2379684B - Switches for downhole use - Google Patents

Switches for downhole use

Info

Publication number
GB2379684B
GB2379684B GB0223416A GB0223416A GB2379684B GB 2379684 B GB2379684 B GB 2379684B GB 0223416 A GB0223416 A GB 0223416A GB 0223416 A GB0223416 A GB 0223416A GB 2379684 B GB2379684 B GB 2379684B
Authority
GB
United Kingdom
Prior art keywords
switches
downhole use
downhole
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
GB0223416A
Other versions
GB0223416D0 (en
GB2379684A (en
Inventor
Nolan C Lerche
James E Brooks
Cameron C Abnet
Clarence Chui
Stuart B Brown
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.)
Schlumberger Holdings Ltd
Original Assignee
Schlumberger Holdings 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 Schlumberger Holdings Ltd filed Critical Schlumberger Holdings Ltd
Priority claimed from GB0121360A external-priority patent/GB2367574B/en
Publication of GB0223416D0 publication Critical patent/GB0223416D0/en
Publication of GB2379684A publication Critical patent/GB2379684A/en
Application granted granted Critical
Publication of GB2379684B publication Critical patent/GB2379684B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/11—Perforators; Permeators
    • E21B43/116—Gun or shaped-charge perforators
    • E21B43/1185—Ignition systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H59/00—Electrostatic relays; Electro-adhesion relays
    • H01H59/0009—Electrostatic relays; Electro-adhesion relays making use of micromechanics
GB0223416A 2000-09-05 2001-09-04 Switches for downhole use Expired - Fee Related GB2379684B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23007700P 2000-09-05 2000-09-05
GB0121360A GB2367574B (en) 2000-09-05 2001-09-04 Switches for downhole use

Publications (3)

Publication Number Publication Date
GB0223416D0 GB0223416D0 (en) 2002-11-13
GB2379684A GB2379684A (en) 2003-03-19
GB2379684B true GB2379684B (en) 2003-08-27

Family

ID=26246504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0223416A Expired - Fee Related GB2379684B (en) 2000-09-05 2001-09-04 Switches for downhole use

Country Status (1)

Country Link
GB (1) GB2379684B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5249095A (en) * 1992-08-27 1993-09-28 The United States Of America As Represented By The Secretary Of The Army Laser initiated dielectric breakdown switch
US5638946A (en) * 1996-01-11 1997-06-17 Northeastern University Micromechanical switch with insulated switch contact
WO2000020820A2 (en) * 1998-09-24 2000-04-13 Schlumberger Technology Corporation Detonators for use with explosive devices
US6100477A (en) * 1998-07-17 2000-08-08 Texas Instruments Incorporated Recessed etch RF micro-electro-mechanical switch
WO2002001584A1 (en) * 2000-06-28 2002-01-03 The Regents Of The University Of California Capacitive microelectromechanical switches

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5249095A (en) * 1992-08-27 1993-09-28 The United States Of America As Represented By The Secretary Of The Army Laser initiated dielectric breakdown switch
US5638946A (en) * 1996-01-11 1997-06-17 Northeastern University Micromechanical switch with insulated switch contact
US6100477A (en) * 1998-07-17 2000-08-08 Texas Instruments Incorporated Recessed etch RF micro-electro-mechanical switch
WO2000020820A2 (en) * 1998-09-24 2000-04-13 Schlumberger Technology Corporation Detonators for use with explosive devices
WO2002001584A1 (en) * 2000-06-28 2002-01-03 The Regents Of The University Of California Capacitive microelectromechanical switches

Also Published As

Publication number Publication date
GB0223416D0 (en) 2002-11-13
GB2379684A (en) 2003-03-19

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Legal Events

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

Effective date: 20170904