NFLB Høstkonferanse 16. september 2011 Brønnkontroll veien videre. Jan Krokeide Fagsjef boring - OLF

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1 NFLB Høstkonferanse 16. september 2011 Jan Krokeide Fagsjef boring - OLF

2 Innhold: - Bakgrunn - Litt om OLFs aktiviteter knyttet til brønnkontroll - Deepwater Horizon Macondo oppfølging - Internasjonalt samarbeide 2

3 Antall brønnhendelser NFLB Høstkonferanse Ekofiskområdet Barentshavet Norskehavet Gullfaks/Statfjord/Snorreområdet Oseberg/Trollområdet Friggområdet Sleipner/Balderområdet

4 Fokus på brønnhendelser i Drilling Managers Forum Månedlig agendapunkt med informasjon fra medlemmene Ved utgangen av august er det registrert 10 brønnhendelse. Etablert Well incident task force * Fortsetter med Share to be better sirkulerer til installasjonene. Tilgjengelig på OLFs hjemmesider Ref. Storulykke risiko Etablert well incident classification task force * Utarbeidet retningslinjer med matrise og eksempler. Oppfølging Well control competence task force* IWCF har implementrt en del av anbefalingene Fortsatt dialog med IADC. * Disse arbeidsgruppene er sammensatt med representanter for både operatører og boreentreprenører. 4

5 Fra presentasjon høsten 2010: Evaluering av grunnleggende brønn kontroll opplæring: Vår konklusjon ble uttrykt gjennom dokumentet Quality Assurance Requirements for Well Control Training Dokumentet inneholder følgende kapitler : Forord Målsetting Bakgrunn Autorisering/godkjenning og kvalitetssikring av opplæring Generelt ansvar for opplærings leverandører 5

6 Evaluering av grunnleggende brønn kontroll opplæring Accreditation and Quality Assurance of Training : Only training providers accredited by IWCF and/or IADC (or equivalent) will be able to offer training based on these requirements. The candidates must be trained and certified according to IAWC including particular focus on simulator specifications, simulator training and certification. A training provider shall have a Training Policy and Procedures Document To comply with these requirements it is not sufficient to base training on test-similar or test identical exercises 6

7 Evaluering av grunnleggende brønn kontroll opplæring General Responsibility for Training Providers: The training provider must establish and implement a training program so that all candidates are trained to competently perform their assigned well control duties. The training provider must have a training plan that specifies the type, method(s), length, frequency, and content of the training for the candidates that complies with the syllabus and/or curriculum. The training provider s instructors and assessors must be certified according to IWCF, IADC or equivalent instructor and assessor standard. 7

8 Følgende aksjoner er observert fra IWCF: Information Notice pdf Information Notice pdf Information Notice pdf 8

9 Deepwater Horizon follow-up Primary Objective Do what we can to prevent a major accident on the Norwegian continental shelf Project Scope Evaluate the need to develop new methods, standards and equipment: - to prevent similar accidents - to limit the impact of an underwater blow-out Regular meetings The project holds regular meetings with PSA and unions 9

10 Deepwater Horizon follow-up (2) Gathering Information: The Project team systematically reviews published investigation reports to ensure experience transfer and to recommend measures for the Norwegian continental shelf The most important sources are: - BP internal investigation, Sept Presidential Commission Report, Jan Report from the US Coast Guard, April PSA assessment, June Report from BOEMRE, Released Report from US Chemical Safety Board, due in

11 Deepwater Horizon follow-up (3) Progress to date: Revise NORSOK standards D 001 & D 010 with respect to locking casing hangers, negative pressure testing, critical cement job, testing of emergency subsea well control systems, practice for prepping BOPs for ROV activations Recommendation letter to operators for revise internal governing documentation for well activities, define rig systems which shall be subject to MoC processes and requirement for development of well control bridging documents Report on effects on environment Chemical exposure and work environment Workshop and report 11

12 Deepwater Horizon follow-up (4) Ongoing improvement work: Prevention Well Design, Planning and Execution; Well Cementing; Well Control, BOP, Reporting of well incidents Management Systems; Culture and Leadership; Competency; Roles and Responsibilities Mobile Offshore Drilling Units (MODU) Design Intervention Capping and Containment Subsea Well Response Project Response 12 Unified Command Oil Spill Preparedness and Response Working Environment and Chemical Exposure Environmental impact

13 WEC etablert etter GIRG (OGP s) Macondo report. Fire arbeidsgrupper: BOPs and Reliability Training and Competency Global Database of Well Control Incidents Standards, Technology, and R&D 13

14 OLF representasjon og deltagelse I WEC: WEC representant: Jan Krokeide (OLF) med John Burgess (ConocoPhillips) as stedfortreder Sub-group representasjon BOPs and Reliability: Henry Meling - Statoil Training and Competency: John Burgess - ConocoPhillips Global Database of Well Control Incidents: Thor Paulsen - Statoil Standards, Technology, and R&D: Statoil vil opprettholde sin etablerte kommunikasjon gjennom OGP and API 14

15 Drilling Managers Forum s fokus: Opprettholde Well Incident Task Force Vurdere WEC Task Group anbefalinger Aktiv støtte til revision of D-001 and D-010 Fortsatt deling av erfaringer fra brønnhendelser Støtte og bidrag til Ptils initiativ: En kvalitativ studie i regi av RNNP med SINTEF Målet med studien er følgende: Gi Ptil og næringen et bedre kunnskapsgrunnlag om årsaker og tiltak vedrørende brønnkontrollhendelser, jf. resultater fra RNNP Identifisere kunnskapshull. Identifisere hovedutfordringer. 15

16 Month Rig Well Type Category (Statoil) Actual Rating (OLF) Pot. Rating (OLF) Description February Maersk Gallant 2/4 B-02C T2 Gas/ Water Higher Pore Pressure than Estimated Green 5 Green 5 March Gullfaks C 34/10-C-38 T2 Gas Swabbing Green 5 Green 5 Higher Pore Pressure than February Ekofisk K 2/4 K-20A Water Estimated Green 5 Green 5 June Ocean Vanguard 30/10-8A Exploration Gas July Valhall 2/8-21 Gas July Eldfisk A 2/7 A-27A T2 Gas Higher Pore Pressure than Estimated Green 5 Green 5 Higher Pore Pressure than Estimated Green 5 Green 5 Higher Pore Pressure than Estimated Green 5 Green 5 1 bbl kick while drilling Tor formation. Circ. Out with drillers method. Max 267 psi on choke. Increased MW from 10.2 to 10.9 psi. Swabbing while running a plug. Circulated out influx with drillers method. Not necessary to weigh up mud (1,7 SG) 5 bbl kick while drilling reservoir. Circ out water kick, 625 psi on choke. MW increased from 11.0 to 11.8 ppg. Flowchecked after coring. 340 l gain. Shut in well on annular with 4,5 bar SIDPP. Killed well using Wait & Weight method using 1,67 SG OBM. Weighted up to 1,70 SG prior to POOH. Took influx whilst drilling 17 ½ hole. Shut in with with 50 psi SICP. Circulated out influx, raised MW and re established well control. Prevention: Influx attributed to zone feeding in gas. Review specific overburden area and re define problematic zone for future avoidance. Higher pore pressure than predicted, increased MW from 9.0 to 10.0 ppg. Max 5psi on choke. 16

17 Fokusområder for å redusere risiko for brønnhendelser: Kompetanse og trening Utstyrs pålitelighet Forbedret pore trykk predikasjon Verktøy og kompetanse Ny teknologi 17