rnnp - risk level of the norwegian continental shelf

PTIL/PSA

RNNP - risk level of the norwegian continental shelf operations

- the Macondo incident - PSA’ focus points of 2011 - 2012

Well Integrity Workshop 26.5.2011Arne M. Enoksen

Drilling and Well techologyPSA

PTIL/PSA

Number of wells /2010

0

50

100

150

200

250

1996 1998 2000 2002 2004 2006 2008 2010

Anta

ll LetebrønnerProduksjonsbrønnerTotalt

2

0

50

100

150

200

250

1996 1998 2000 2002 2004 2006 2008 2010

Anta

ll Flyttbare innretningerProduksjonsinnretningerTotalt

PTIL/PSA

DFUs - ”major risk accidents / incidents”

31/05/2011

3

DFUs by category

0

20

40

60

80

100

120

140

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

Ant

all D

FUer

Evak/mønstr

Skade underv.inst+stigerør

Lekk underv.inst+stigerørKonstr.skade

Koll feltrel fart

Drivende gjenst

Skip på koll.kurs

Annen brann/ekspl

BrønnhendelseAntent HC lekk

Ikke-ant HC lekk

PTIL/PSA

Well control incidents /2010

0

5

10

15

20

25

30

35

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

Ant

all b

rønn

hend

else

r

Ekofiskområdet

Barentshavet

Norskehavet

Gullfaks/Statf jord/Snorreområdet

Oseberg/Trollområdet

Friggområdet

Sleipner/Balderområdet

4

PTIL/PSA

Well control incidents /2010

0

5

10

15

20

25

30

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

Ant

all b

rønn

hend

else

r

Leteboring

Prod.boring

5

PTIL/PSA

Trends - risk level in the petroleum activity by RNNP indicators

6

NORSOK D-010 rev. 3: ”Well integrity in drilling and well operations”

Function tests and Pressure tests:

•Production Master Valve•Production Wing Valve•Downhole Safety Valve• BOP pressure test •Well control incidents•Well integrity status

PSA/RNNP initiative to include drilling contractor and well intervention BOP test results (resonsibility of owners to report test data)

PTIL/PSA

Well integrity – NCS 2010

PTIL/PSA

Well integrity /2010

31/05/2011

8

0,0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

1,0

Op1 Op2 Op3 Op4 Op5 Op6 Op9 Op10 Op11

1174 6 58 267 121 32 60 18 5

Pros

entv

is a

ndel

Rød

Oransje

Gul

Grønn

Andel brønner i kategori

PTIL/PSA

Well status /2010

31/05/2011

9

0,0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

1,0

Injecting Producing Suspended TemporaryAbandoned

P&A Ukjent

286 1099 141 85 5 125

Pros

entv

is a

ndel

Rød

Oransje

Gul

Grønn

Andel brønner i kategori

PTIL/PSA

PSA follow up of requirements to the industry

well control competence & trainingBOP requirements

casing design parameters

31/05/2011

10

PTIL/PSA

Macondo follow up by PSA /OLF• DMF subcommiteè – improvement of -”well control

competence” and - ”qualification of training facilities”:• IWCF - Centre accreditation

- Management systems- Human and physical resources- Course details and materials

• IWCF - Training accreditation- Primary Centre- Secondary Centre- Temporary Centre

• Revive Int Alliance of Well Control (IAWC)• To review IADC curriculum and IWCF syllabus and

concentrate on common ground between the two’• Plan made to audit ”Aker training centre” in Stavanger

31/05/2011

11

PTIL/PSA

Macondo follow up by PSA

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12

by British Petroleum (BP)

PTIL/PSA

Deepwater drilling in norwegian waters, depth > 600 m

2002: 1717 m MD and 2006: 1721 m MD

PTIL/PSA

Macondo / PSA projects• Interdisciplinary project group from aug 2010• PSA initiated a SINTEF project in parallell in 2011

- Report due date 31.5.2011- No issued recommendations up until now- Revision of NORSOK D-001 Drilling Facilities is

ongoing- Task group to update chapter 9 (P&A) of D-010 is

ongoing- Emergency preparedness contingencies and formation

dynamics simulations - requirements to be considered

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14

PTIL/PSA

PSA / focus points 2011 - 2012• New comers’ on NCS – systems audits and casing

reviews (Mærsk, Idemitsu, Premier, E-on Ruhrgas, OMV and Rocksource)

• Well design, well kill simulations and blow out contingencies of exploration wells (ie prod casing setting depth)

• Well barrier envelopes of gas lift wells’ and qualification of well barrier elements in same (gas lift valves)

• Follow up of cementation practices i standard wells, CO2 wells & P/A)

• MPD application and rig up practise

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15

PTIL/PSA

PSA / focus points 2011 - 2012

• Coiled tubing applications• Aknowlegdement of compliance’ of well intervention

installations (seabed applications)• Wellhead fatigue considerations• Deep water drilling and HPHT well conditions and

requirements• Promote an update of NORSOK SR-007 Well testing

requirements• Promote a ’cold climate conditions’ chapter in D-010 for

the Barents Sea to be introduced

31/05/2011

16