The 5th European Well Abandonment Seminar

April 21st 2015

Aberdeen Scotland

Se

cu

rity

Cla

ssific

ation: In

tern

al -

Sta

tus: D

raft

Existing Capabilities and Methods enabling rig less Plug and Abandonment

Steinar Strøm

Leading Advisor Plug and Abandonment, Statoil

Background

A significant increase in time consumption per Permanent P&A operation in 2004

Average PP&A activities ahead of us:

2015-2019: On average 2 fixed rig/yr

2020-2030: On average 1-2 MOU and 2-3 fixed

units

2030-2040: On average 2-3 MOU and 3-4 fixed

units

Huge amount of Permanent P&A activities

ahead of us

Rigs per year in PP&A

Improvement effort needs to address the major «time thieves»

1 Note: Many decisions are made based on lack of ‘hard facts’

Casing, trip and milling 80% of

time

Focus areas for

P&A improvement

• Minimize retrieval of old tubulars

• Minimize tripping

• Taking existing methods and technology into daily use

• Contribute to development of new game changing technology

External

orientation and

exp. transfer

• Look for the best/most effective solutions Connect with authorities and technology providers to understand experience and verification requirements

Ongoing programs

and studies

• Program: P&A Qualification Program1

• Project: ‘Evaluation of flow potential in overburden zones’

Technology status

5

Three approaches to P&A to be implemented over time

Year of

implementation

2015 2016 2018 (?)

High

Low

Approach #1

Approach #2

Approach #3

Disruptive technologies (e.g. plasma) To be implemented in 3-5 years

«Technical Limit» P&A To be implemented in 2015

«Extreme Concept» P&A

«Improvement» P&A Best practice by end of 2014

Deg

ree

of

chan

ge

2014

P&A road map

Dry wells

Integrated platform

Wellhead platform

Subsea wells

‘Online’ rig work

Jack up (Huldra)

or MDR (Heimdal)

LWI to secure

wells, PP&A

with MOU

‘Offline’ P&A work

Example only

PP&A performed with

Coiled Tubing (or similar)

Light rig, cost efficient

Tender Support solution

P&A from dedicated,

purpose built vessel Dedicated

P&A rig, final

stage of P&A

from vessel

Te

chnolo

gy s

tep;

all

rem

oval of

casin

gs

without

BO

P

Natu

ral develo

pm

ent

of

less c

ostly s

olu

tions

Dedicated MDR (or similar),

working across asset borders

Acknowledgements / Thank You / Questions

Slide 8