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 infl uence 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 confi rm 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 reconfi rm 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 fl uid weights against the expected formation pressure

■ Contribute to well control or kick drills – and learn from them

■ Critically review offi ce-based risk assessments ■ Carry out task specifi c, 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 ■ Confi rm 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-specifi c and contractor standards

■ Apply the bridging documents that connect Shell and contractor safety systems to confi rm 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 PROCESSSAFETY

PEOPLE

EQU

IPM

ENT

PRO

CED

URES

PROCESSSAFETY

BARRIERS

FRONT LINE STAFF

Critical elements to

keep our wells safe10

AS A LEADER YOU NEED TO:

■ Make it clear that everyone must comply with the Shell barrier policy

■ Provide the time and resources that people need to either put barriers in place or repair them

■ Set the expectation that barriers are defi ned for every operation in well construction, intervention and abandonment

■ Review the status of barriers during site walk-arounds

■ Be prepared to ask probing questions about barriers – and challenge any hesitant answers

■ Confi rm that a Technical Authority has endorsed well operations plans, including Pore Pressure Predictions

■ Encourage and demonstrate an integrated approach to managing subsurface uncertainties

■ Understand the full implications of worst case scenarios

■ Set an expectation that offi ce-based planning includes detailed rig-ups and risk assessments to achieve ALARP, plus contingency planning

■ Review all rig-up drawings and risk assessments ■ Own the 'Management of Change' process and make sure it’s used

■ Regularly review the training needs of your teams ■ Identify suitable training programmes and make time for training

■ Communicate formal competency requirements – particularly for HSE-critical tasks

■ Make sure fully-documented emergency response contingency plans are in place

■ Be fully confi dent that the emergency response roles to be taken by Shell and contractors are clear to both parties

■ Regularly test emergency responses with all those likely to be impacted

■ Regularly review the status of critical well control equipment in eWCAT

■ Make sure the re-certifi cation of critical well control equipment is captured in preventative maintenance programmes

■ Set an expectation that for all temporary rig-ups, detailed layout drawings must be done

■ Make it clear that Senior Contractor and Shell site-supervisors must walk the lines

■ Encourage the use of the 'Management of Change' process

■ Know the standards – external regulations plus all Shell, Wells-specifi c and contractor standards – and provide easy access to them for everyone

■ Put in place bridging documents with contractors ■ Assign Technical Authorities Levels 1-2-3

■ Encourage open and honest reporting – welcome bad news

■ Provide the resources to adequately follow-up and investigate incidents

■ Take part in the close-out of incident fi ndings

WELLS PROCESS

SAFETY IS ABOUT

KEEPING THE

HYDROCARBONS

IN THE PIPE, THE

WELL OR THE

RESERVOIR.

ENGLISH

PERSONAL AND PROCESS SAFETY

THINK SMARTER + WORK SMARTER TO KEEP WELLS SAFE

FOR FURTHER INFORMATION:

■ Shell supervisor on location ■ Offi ce based Wells Engineering team ■ Wells HSE team ■ Wells discipline lead ■ General Manager Wells Operations

Designed and Produced by:844919 - I&D Services,Concept & Visualisation, Rijswijk.June 2014.

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.

Fatality

RAM4+P(HiPo)

Lost Time Injury

Restricted Work & Medical Treatment Case

First Aid Case

Unsafe Acts & Conditions

Personal Safety

Cata-strophicEvent

Sustained Loss of Well Containment

Process Safety

Loss of Well Containment

Barrier Event

Wells Process Safety Incident

Unsafe Acts & Conditions

Process safety incidents are distinctive from other incidents as they may have catastrophic potential.

KEEP WITHIN CONTROL LIMITS

REDUCE LIKELIHOOD

CONTROL& BARRIERS

MITIGATE CONSEQUENCES

PLAN FOR RECOVERY

RESPONSE& RECOVERY

RELEASED HAZARDINCIDENT

BARRIERS

THINK PROCESSSAFETY

LEADERS

Critical elements to

keep our wells safe10