NFLB Høstkonferanse 16. september 2011
”Brønnkontroll – veien videre”
Jan Krokeide – Fagsjef boring - OLF
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
Innhold:
- Bakgrunn
- Litt om OLFs aktiviteter knyttet til brønnkontroll
- Deepwater Horizon – Macondo oppfølging
- Internasjonalt samarbeide
2
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
35
Ekofiskområdet
Barentshavet
Antall brønnhendelser
30
Norskehavet
Gullfaks/Statfjord/Snorreområdet
25
Oseberg/Trollområdet
Friggområdet
20
Sleipner/Balderområdet
15
10
5
0
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
3
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
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.
*
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Disse arbeidsgruppene er sammensatt med representanter for både operatører og
boreentreprenører.
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
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”:
•
•
•
•
•
5
Forord
Målsetting
Bakgrunn
Autorisering/godkjenning og kvalitetssikring av opplæring
Generelt ansvar for opplærings leverandører
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
Evaluering av grunnleggende brønn kontroll opplæring
Accreditation and Quality Assurance of Training :
6
•
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
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
Evaluering av grunnleggende brønn kontroll opplæring
General Responsibility for Training Providers:
7
•
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.
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
Følgende aksjoner er observert fra IWCF:
Information Notice 2011-01.pdf
Information Notice 2011-04.pdf
Information Notice 2011-06.pdf
8
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
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
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NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
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:
-
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BP internal investigation, Sept 2010
Presidential Commission Report, Jan 2011
Report from the US Coast Guard, April 2011
PSA assessment, June 2011
Report from BOEMRE, Released 15.09.11
Report from US Chemical Safety Board, due in 2012
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
Deepwater Horizon follow-up (3)
Progress to date:
11
•
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
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
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
•
•
•
•
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Unified Command
Oil Spill Preparedness and Response
Working Environment and Chemical Exposure
Environmental impact
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
•
WEC etablert etter GIRG (OGP’s) Macondo report.
•
Fire arbeidsgrupper:
•
•
•
•
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BOPs and Reliability
Training and Competency
Global Database of Well Control Incidents
Standards, Technology, and R&D
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
OLF representasjon og deltagelse I WEC:
•
WEC representant:
Jan Krokeide (OLF) med John Burgess (ConocoPhillips) as “stedfortreder”
Sub-group representasjon
•
•
•
•
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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
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
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 2010.
• Identifisere kunnskapshull.
• Identifisere hovedutfordringer.
15
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
16
Well
Type
2/4 B-02C T2
Gas/
Water
Category
(Statoil)
Actual
Rating
(OLF)
Month
Rig
February
Maersk
Gallant
March
Gullfaks C 34/10-C-38 T2
Gas
February
Ekofisk K
2/4 K-20A
Water
Swabbing
Green 5
Higher Pore
Pressure than
Estimated
Green 5
June
Ocean
Vanguard
30/10-8A
Exploration
Gas
Higher Pore
Pressure than
Estimated
Green 5
July
Valhall
2/8-21
Gas
July
Eldfisk A
2/7 A-27A T2
Gas
Higher Pore
Pressure than
Estimated
Green 5
Higher Pore
Pressure than
Estimated
Green 5
Higher Pore
Pressure than
Estimated
Green 5
Pot.
Rating
(OLF)
Green 5
Green 5
Green 5
Green 5
Green 5
Green 5
Description
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.
NFLB Høstkonferanse 16.09.2011
”Brønnkontroll – veien videre”
Fokusområder for å redusere risiko for brønnhendelser:
•
•
•
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Kompetanse og trening
Utstyrs pålitelighet
Forbedret pore trykk predikasjon
• Verktøy og kompetanse
• Ny teknologi