Dear colleague, Keeping our wells safe is critical to our business future. We have to keep the hydrocarbons we handle inside our pipes, wells or reservoirs in order to avoid the potentially catastrophic impacts on people or the environment of releasing these hazardous materials. Wherever we work – in drilling, well completions or well interventions – we all have a role to play in keeping our wells safe. For that reason, I want each and every one of us to understand what has to be done in the ten critical areas that will most directly influence wells safety. We call this ‘Think Process Safety’ because we all have to think what it is we can and must do to keep our wells safe. This card outlines the 10 critical elements and guides you on the steps you can take to embed them in your thinking and daily tasks. If we all ‘Think Process Safety’ we protect ourselves and safeguard our long-term future. Best regards, Peter Sharpe, Executive Vice President Wells, Shell AT THE FRONT LINE YOU NEED TO: ■ When barriers are not clear: STOP and confirm before you proceed ■ Always check there are two wells barriers in place ■ Report all lost barriers – including leaks and spills – to your supervisor ■ Know who is responsible for maintaining a wells barrier – is it you? ■ When an operation changes, always reconfirm the barriers ■ Discuss all changes in the status of barriers with your supervisor ■ Do you know the expected formation strength and subsurface pressures? ■ Double check the fluid weights against the expected formation pressure ■ Contribute to well control or kick drills – and learn from them ■ Critically review office-based risk assessments ■ Carry out task specific, on-site risk assessments before the work starts ■ Identify and communicate any changes to plans to your supervisor - use the 'Management of Change' process when appropriate ■ Keep your training up-to-date ■ Act as a buddy and share your learnings with less experienced colleagues ■ Test and show your competence during drills ■ Know what your own role will be in an emergency response ■ Know the site alarm signals and muster points ■ Take part in all regular drills – and record them if that’s your role ■ Make sure the status of well control equipment is in the Well Control Assurance Tool (eWCAT) ■ Maintain the proper line-up of well control equipment ■ Confirm shear capability and discuss the running of any non-shearables with your supervisor ■ Tell your supervisor about any differences between the actual and planned rig-up ■ Get your supervisor’s approval for any changes to plans ■ Use the 'Management of Change' process when appropriate ■ Know and comply with all standards: external regulations plus all Shell, Wells-specific and contractor standards ■ Apply the bridging documents that connect Shell and contractor safety systems to confirm the applicable standards ■ Always get the required sign-off if a task or action will not comply with the standards ■ Report ALL Wells Process Safety incidents – including leaks ■ Be alert to and share process safety event learnings that apply to your own operations ■ Know what you must do to avoid a repeat of an incident that happened somewhere else WELLS PROCESS SAFETY IS ABOUT KEEPING THE HYDROCARBONS IN THE PIPE, THE WELL OR THE RESERVOIR. BARRIERS Know your physical well barriers and confirm they are tested. WELL CONTROL EQUIPMENT Know your well control equipment and confirm it’s certified and tested. WALK THE LINE ‘Walk the line’ on temporary rig-ups and confirm set-up = layout drawing. TRAINED PEOPLE Confirm all people are trained and competent for the task. EMERGENCY RESPONSE Test your emergency responses and conduct regular drills. LOST BARRIER If a barrier is lost, immediately stop and fix it. STANDARDS & PROCEDURES Follow standards and procedures or get approval to deviate. REPORT/LEARN Report Wells Process Safety incidents – investigate, share, learn. SUBSURFACE UNCERTAINTIES Know and communicate subsurface uncertainties. RISK ASSESS Perform risk assessments during planning and for changes. ENGLISH THINK PROCESS SAFETY PEOPLE EQUIPMENT PROCEDURES PROCESS SAFETY BARRIERS FRONT LINE STAFF Critical elements to keep our wells safe 10