Tailored Risk Management In Drilling & Completion: Illustrative Case Study Of A Well Campaign

Risk Management (RM) is awell recognised approach to addressprojects uncertainties, to provideaccurate CAPEX estimates and tohave proactive responses tounplanned events.However, RM is often presented asa standard and repetitive process,disregard to projects diversechallenges. This acceptance is amain obstacle to its successfulimplementation, because this canlead to over complex risk studies forsimple matter or, on the contrary,scarce results for intricate issues.Drilling & Completion projectspresent a high versatility ofsituations (from a standard onshoreworkover to a very challenging deepoffshore exploratory campaign).Project challenges can be verydifferent: technical (HP/HT, newtechnologies, etc), environmental(sensitive areas, deep offshoreconditions, etc), economic (marketconditions, etc), or strategic(partnership, etc).The natural consequence is thateach project requires an adequateresponse in terms of RM. Actually,RM toolbox encompasses a numberof different studies, such as riskregisters, risk mapping, probabilisticCAPEX/schedule, fault trees, etc.Not all studies should besystematically performed. Thus, theRM approach must be tailored toeach project challenges, in order tobring the highest added value to thedecision makers. eni Drilling, Completion &Production optimization departmenthas built an integrated RM systemthat provides a properly designedworkflow for treating each projectwith a suitable approach accordingto its maturity and other technical,environmental, economic or strategiccriteria.This paper takes advantage of aneni experience on a well campaignand describes how RM approachsupported strategic decisions on theimplementation of technologies(RSS, continuous circulating system,aluminium drill pipe, ceramicprotectors and centralisers) to reducewell operations uncertainties. Thiscase study encompasses thecomplete decision loop, from thecost/benefit analysis of eachtechnology to the measured benefitsfrom the rig operations in terms ofperformance enhancement.Finally, it substantiates the values ofRM in investment decision byaddressing RM in a practical way.This case study will definitely helpto spread a RM culture withinproject management organizations.