Upload
trinhkhanh
View
217
Download
0
Embed Size (px)
Citation preview
© 2013 Chevron
LNG Adaptation & Process
Change
Environmentally Friendly Drilling Systems Program
September 5, 2013
© 2013 Chevron
Hazard ID and Tenet of the Day
Pressure: Tenet 5
2
Energy applied by a liquid or gas
which has been compressed or is
under a vacuum.
Examples: pressure piping,
compressed cylinders, control
lines, vessels, tanks, hoses, and
pneumatic and hydraulic
equipment
Always meet or exceed customer’s
requirements
General description: Chevron’s goal is to be the global energy
company most admired for its people, partnerships and
performance. Whether working as a company representative,
contractor or partner with interest in a joint project, it is important
that all team members earnestly strive to meet the expectations,
agreements, requirements, standards and goals of the endeavor
that is set before them. This commitment to operational excellence
is one of the defining principles guiding our efforts to achieve this
goal and it is up to each of us as individuals to strive for a level of
performance indicative of a world-class organization.
Examples of Tenet 5: Customer’s Requirements topics
•We adhere to the ten Tenets of Operational Excellence
•We follow the two key principles: Do it safely or not at all and There
is always time to do it right
•We follow company policies and procedures
•We are committed to supporting with the Chevron Way
•We strive to conduct incident free operations
•We report all incidents, accidents, near misses and environmental
events
•We exercise Stop Work Authority when appropriate
•We believe all incidents are preventable
© 2013 Chevron
Forces behind change
Community Stewardship –
– Right thing to do in the communities we operate
Environmental Impacts
– Reduces Spills
– Reduced Emissions
– Lower SPL’s (noise impacts – 100% gas operation)
Limits contractor exposure –
– No more daily fuel deliveries, fewer trucks through townships
Operational Improvements
– Reliable consistent gas quality with LNG
– LNG supports high volume – extended completions operations (sleeves)
3
© 2013 Chevron
Comparisons analyzed
Bi-Fuel Applications
– No/Low torque loss
– Lower entry costs
– Best with OEM support
– Plug-n-play operation
Mono-Fuel Applications
– Low/No spills
– Meet Tier IV emissions
– Torque demands can be
offset with camp gen
(drilling)
– Extended OEM service
intervals
4
© 2013 Chevron
Technology Adaptation – Chevron’s learning curve
5
Stranded Operations
– Compressed Natural Gas (CNG)
– Liquefied Natural Gas (LNG)
Currently delivery through LNG Partnership(s)
• Conducive to asset programs
• Manageable
Technology adaptation
Drilling & Completions partnership
growth
Reduced our organizational burdens
– provide turnkey operation.
• LNG part of long-term programs
© 2013 Chevron
Challenges faced for deployment – natural gas supply
(LNG)
Risk Management
Management of Change
Process Safety Information
Operating Procedures
Technical Codes and Standards
Safeguards, ESD, Facility Siting
Maintenance Reliability / Asset Integrity
Managing safe Work / Permit to Work / JSA /
Hazard Assessment
Internal Audits & Assessments
Continual Improvement by LNG Suppliers
6
© 2013 Chevron
Example Process Change
Methane Supply Lines / Return
Lines
– Develop Standard
• Explore high grade CS
or SS application.
• Decommissioning /
Removal / Re-use of
buried gas lines
• Is poly sufficient in the
event of RGFS failure or
spill?
• Well pad
standardization and pre-
planning.
7
© 2013 Chevron
Key Process Safety Findings
Process Safety Information:
Up to date P&IDs regarding LNG
units
Hazardous/Electrical area
classification – for RFS startup
Plot plan to be standardized with
business partner
MSDS
Operating Procedures:
In place for start-up, shut down,
and refueling
Classroom training for field
personnel and tracked through
Chevron LMS
8
Power cord from the rig
© 2013 Chevron
Conclusions
Natural Gas powered equipment is not a cheaper alternative
to Diesel
– Best for our environment
– Safe when operated correctly
– Provides sustainable operation for Operators and Drilling
Contractors
– LNG not likely to be replaced by field gas near future.
• LNG plant expansion (demand) – Marcellus gas
• Fracturing – extended operations
• Cementing – future operation – shared with rig
Must be operated safely as with any fuel
– Adaptation and sharing of “best practices” for supply
lines, manifolds, compression, etc.
9