CA2195722C - Generateur d'impulsions servocommande pour mesurer la pression des boues en cours de forage - Google Patents

Generateur d'impulsions servocommande pour mesurer la pression des boues en cours de forage Download PDF

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Publication number
CA2195722C
CA2195722C CA 2195722 CA2195722A CA2195722C CA 2195722 C CA2195722 C CA 2195722C CA 2195722 CA2195722 CA 2195722 CA 2195722 A CA2195722 A CA 2195722A CA 2195722 C CA2195722 C CA 2195722C
Authority
CA
Canada
Prior art keywords
main
assembly
main valve
orifice
pilot valve
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 - Lifetime
Application number
CA 2195722
Other languages
English (en)
Other versions
CA2195722A1 (fr
Inventor
Terrence G. Frith
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.)
Smith International Inc
Original Assignee
Thomas Tools Inc
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 US08/687,207 external-priority patent/US6016288A/en
Application filed by Thomas Tools Inc filed Critical Thomas Tools Inc
Publication of CA2195722A1 publication Critical patent/CA2195722A1/fr
Application granted granted Critical
Publication of CA2195722C publication Critical patent/CA2195722C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Servomotors (AREA)
  • Earth Drilling (AREA)
CA 2195722 1996-07-25 1997-01-22 Generateur d'impulsions servocommande pour mesurer la pression des boues en cours de forage Expired - Lifetime CA2195722C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/687,207 1996-07-25
US08/687,207 US6016288A (en) 1994-12-05 1996-07-25 Servo-driven mud pulser

Publications (2)

Publication Number Publication Date
CA2195722A1 CA2195722A1 (fr) 1998-01-26
CA2195722C true CA2195722C (fr) 2006-01-03

Family

ID=24759498

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2195722 Expired - Lifetime CA2195722C (fr) 1996-07-25 1997-01-22 Generateur d'impulsions servocommande pour mesurer la pression des boues en cours de forage

Country Status (1)

Country Link
CA (1) CA2195722C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7564741B2 (en) 2004-04-06 2009-07-21 Newsco Directional And Horizontal Drilling Services Inc. Intelligent efficient servo-actuator for a downhole pulser
US7719439B2 (en) 2006-06-30 2010-05-18 Newsco Directional And Horizontal Drilling Services Inc. Rotary pulser

Also Published As

Publication number Publication date
CA2195722A1 (fr) 1998-01-26

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