Slickline Firing Systems Safety and Training Firing Systems Safety and Training David S. Wesson,...
Transcript of Slickline Firing Systems Safety and Training Firing Systems Safety and Training David S. Wesson,...
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Slickline Firing Systems
Safety and Training
David S. Wesson, P.E.
February 23, 2005
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Review of Systems
GEODynamics conducted a review for
Marathon in 2003.
Marathon is now releasing some of this
information to this group
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Slickline Firing Heads
Trigger Type
– Mechanical
– Electronic
– Electro-Mechanical
Safety Issues
Operational Issues
Tool Specifications
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System Safety Features
Detonators
– Recommended Detonator
– Some do not adhere to RP API67
– RF Safe Detonator Option
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System Safety Features
Electronic Trigger Parameters
– Mechanical Pressure Switch / Lockout
– Electronic Pressure Switch / Lockout
– Accelerometer Motion Detection
Sequenced to Arm, Fire and Disarm
– Pressure Motion Detection
Sequenced to Arm, Fire and Disarm
– Temperature Threshold
– Time Threshold
– Time Disarm Threshold
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System Safety Features
Mechanical Trigger Parameters
– Drop Safe?
– Pressure required to fire?
– Fluid required to fire?
– Minimum Energy (ft-lb) required to fire?
– Not as many safety parameters as Electronic
Systems
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Operational Issues
Training
– Formal course?
– Internal Certification program?
– Documented Training Procedures and Policies?
Field Operator’s Manual?
Field Failures Documented and Reported?
Personal Injuries Documented and Reported?
Field Run History Documented?
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Closing Thoughts
Ask if system has been reviewed and certified by a third party agency
Ask to see Training Certifications of field personnel
Ask to see field history and failure reports
Ask – Could this system fire at the surface under circumstances that are likely to occur (expected human error, malfunction of system, etc…)?
Generally speaking - The more “in-series” parameters that are required to fire, the better. Of course…