Åsgard challenges and opportunities - forsiden · Åsgard – challenges and opportunities...

Åsgard – Challenges and Opportunities

2014-01-23 Classification: Internal

Mari Skaug VP Åsgard PTC

Åsgard field overview

2014-02-26 2 Classification: Internal

Åsgard A

Oil producer

Smørbukk Sør

Oil and gas condensate

Smørbukk

Gas condensate and oil

Mikkel

Gas

Pipeline

for gas

export

Åsgard B

Gas center

Åsgard C

Condensate storage

40 km

40 km

10 km

10 km

Midgard

Gas

SPE paper

Owners

Statoil ASA (operatør) 34,57 %

Eni Norge AS 14,82 %

Exxon Mobil E&P Norway AS 7,24 %

Petoro AS 35,69 %

Total E&P Norge AS 7,68 %

http://sp-st04.statoil.com/sites/d9f78dbc-d9f1-48d7-91b0-7b05c8a0a07b/Document library/Forms/DispForm.aspx?ID=546&RootFolder=/sites/d9f78dbc-d9f1-48d7-91b0-7b05c8a0a07b/Document library

Where do we find Åsgard, Morvin, Mikkel og Yttergryta?

ÅSGARD PTC OPERATING FIELDS

°

Åsgard-feltenes utstrekning

Classification: Internal

2010-09-15

Production started 19.05.1999 The first shipment from Åsgard A 29.06.99

•A lot of negative articles

was published in the news

about this “hopeless

project”.

•Total Investment inkl.

Kårstø and ÅT: 65 BNOK

(Budget 48 BNOK)

•Harald Nordvik CEO in

Statoil 1988-1999 had to

leave his position.

•Pay back: May 2003

During the first year we had 26 compressor changes!

General Information – History 1981 Midgard field discovered (Saga Petroleum)

1984 Smørbukk field discovered (Statoil)

1985 Smørbukk Sør field discovered (Statoil)

1993 Statoil and Saga Petroleum start co-operation for Åsgard field development

1995 Åsgard unit PDO application, unitisation of the Smørbukk, Midgard and Smørbukk Sør fields

1996 PDO approval and project initiation: Åsgard A contracts/construction start, Start predrilling of Smørbukk and Smørbukk Sør wells

1997 Major contracts for Åsgard B (field gas centre), Kårstø expansion, Transport pipelines

1999 19th of May oil production started from Åsgard A (all gas re-injected)

2000 1st of October started gas and condensate production from Åsgard B.

2003 1st of October started gas and condensate production from Mikkel by Sub Sea tie in to Åsgard (connection to Midgard Z-template)

2006 Production of Åsgard Blend started 01.11.2006. The product contains oil and condensate from Åsgard.

2008 PDO approval Yttergryta (January 18th 2008)

2009 5th of January started gas and condensate production from Yttergryta.

Start up of Tyrihans gas injection November 1st.

2010 Morvin start up 1st of August.

2011 PDO approval for Åsgard subsea compression

2012 PDO approval for Smørbukk Sør Extension

2013 Discovery Smørbukk Nord, exploration well

Disconnection of the tie-in field Yttergryta

Gas injection in Smørbukk re-established (Dec’13)

1995 Åsgard Unitisation

• Midgard

• Smørbukk

• Smørbukk Sør

1981-85 Discovery

• Midgard

• Smørbukk

• Smørbukk Sør

1996-1999 Åsgard development

• New technology

• Budget overruns

• Board of Directors and

CEO had to resign

1988 Statoil office, Stjørdal

Heidrun

Operation,

Stjørdal

1996 Åsgard PDO approved

• Largest

• Largest floating platform

• Large area – high complexity


Åsgard – from discovery to development

2010

Morvin

1999

Åsgard A

Midgard, Smørbukk

and Smørbukk Sør

2003 Mikkel

2012 Smørbukk

Nord-øst

Åsgard subsea

compression

2015

Smørbukk Sør

Extension Ph 1 Yttergryta

2009 Tyrihans

2000

Åsgard B

Åsgard C


Åsgard – in operation

Technology step Recovery and lifetime for several

gas fields can be prolonged

significantly

Value creation Improve recovery by 282

millioner barrels oil equivalents

from Mikkel and Midgard

Courageous

decission Pioneering work, complex

development and important step

towards complete subsea factory


Technology step Improve recovery from mature

fields and prolong lifetime for

Åsgard A

Value creation 16,5 million barrels oil equivalents

Courageous

decission Strategic important for access of

new resources in low permeable

reservoirs


Åsgard

transport

til Kårstø

Åsgard

transport


Kristin

Åsgard A

Åsgard B

Åsgard C

Smørbukk

Smørbukk

Sør

Morvin

Tyrihans

Midgard

Yttergryta

Mikkel


Large possibilities into the future beyond 2015 Ambitious IOR strategy

Two examples on how an

IOR measure, or ‘Action’,

has been presented ......


Large possibilities into the future beyond 2015 Low abandonment reservoir pressure

Åsgard is on decline

*Low pressure phase 1 implemented on Åsg A and B

Lowering of abandonment reservoir pressure

• Largest IOR volume contributor

• High focus on way forward (how and when) towards low

abondonment pressure in Åsgard reservoirs

• Projects ongoing on both Åsg A and Åsg B

• High complexity but many possibilities with Åsgard facilities

* Low pressure phase 1 = revamp of compressors to achieve a lower inlet separator pressure’


Large possibilities, but tough climb ahead Infill drilling

2nd largest IOR contributor is

infill drilling

MD = 3500 - 4500 m

MD = 5000 - 6000 m

P = 500 bar

T = 165 °C

P = 250 bar

T = 90 °C

Midgard MD = 5000 - 6000 m

P = 400 bar

T = 140 °C

Smørbukk Sør

3900 m 4700 m

2500 m

Smørbukk


Large possibilities into the future beyond 2015 Infill drilling

Drilling infill wells actively pursuing the IOR ambition

•

•

Different type of drilling challenges on the Åsgard fields

− Depth, zonation, pressure, temperature, GOR….

−


Large possibilities into the future beyond 2015 Infill drilling

The Åsgard license has secured rig and intervention vessel

(LWI) capacity for years ahead

Åsgard – Still going strong by year 2030 Facilities for the future and technology push are key parameters.

• Secure future IOR and utilise Åsgard as a centre for 3rd

party processing

Facility for the future

• High complexity but many possibilities with Åsgard facilities

• Key parameters are:

− Life time, capacity, space and weight margin

Technology push

• Something completely new, cheaper, smarter,…….pursuing

the IOR ambition


Åsgard – Still going strong by year 2030 Facilities – new additions 2013 - 2015


Reserves development overview (as of RNB 2013)

~49 401

~75 615

~60 492

~53 435

RF

(%) Reserves

(MSm3 oe)

100 (In-place) 820

PDO reserves:

2247 Mmboe

355 MSm3 oe

Classifi

cation:

Internal

2012-

10-08

23

Åsgard Daily Production (31.10.12)

Max. gas

capasity Åsg B:

48.5 MSm3/d Max: 7 MSm3/d

Max injection:

21.2 MSm3/d

Classifi

cation:

Internal

2012-

10-08

24

Åsgard Unit long term gas production

Classifi

cation:

Internal

2012-

10-08

25

Classification: Internal

2010-09-15

The “Kings” of daily

oil production

1999: S-1 H,

2000: P-3 H

2001: P-3 H

2002: N-4 H

2003: J-4 H

2004: J-4 H

2001: The cumulative production for P-3 H: 1.89 MSm³ oil ! = ~1.1 Billion USD

Max daily production on one well

S-1

H

P-3

H

N-

4 H

J-

4 H

J-

4 H

Max daily production

5 648 5 760

5 100

6 200

4 750

2 940

-

1 000

2 000

3 000

4 000

5 000

6 000

7 000

1999 2000 2001 2002 2003 2004

S-1

H

P-3

H

P-3

H

N-4

H

J-4

H

J-4

H S

-1 H

28

Åsgard Reservoirs: Different stratigraphic & structural position

2

3

4

5

Båt

RorRor

Melke

Garn

Åre

Tilje

Tofte

Ile

Not

Melke

Garn

Åre

Tilje

Tofte

Ile

Not

Fangst

Depth (km)

Smørbukk Smørbukk Sør

Midgard

Åsgard – Reservoir overview

MD = 5000 - 6000 m

P = 500 bar T = 165 °C

MD = 3500 - 4500 m

P = 250 bar

T = 90 °C

4700 m

3900m

2500m

Midgard - 9 wells GORinit = 600-2000 Sm³/Sm³

GORinit = 6500 Sm³/Sm³ MD = 5000 - 6000 m

P = 400 bar

T = 140 °C

Smørbukk Sør - 17 wells Smørbukk - 36 wells

MD = 3500 - 4500 m

P = 250 bar

T = 100 °C

2500m

Mikkel - 3 wells

GORinit = 2800 Sm³/Sm³

300m

GORinit = 300-5000 Sm³/Sm³

wells: 1-5 zones commingled P+S: Garn only. Q: Garn+Ile+Tilje

Garn, Ile and Tilje wells: Garn + Ile

32 Classification: Internal 2013-07-26

Åsgard «hub» total:

• 157000 boed

• 12.6 % of DPN production

• Largest contributor in Statoil

Åsgard Petroleum Technology

Field: Smørbukk Sør (part of Åsgard Unit)

Åsgard Petroleum Technology

Field: Smørbukk (part of Åsgard Unit)

Åsgard Petroleum Technology (March 2014)

S

N

Delta

Gamma

Alpha

Beta

Yttergryta

Midgard

Mikkel

Morvin

N Smørbukk

Morvin

Fields: Midgard (part of Åsgard Unit)

Mikkel (subsea tie-in to Åsgard)

Morvin (subsea tie-in to Åsgard)

General Information – Reserves and licensees

• Dead weight: 62 500 ton

• Length / width: 115 / 96 m

• Living quarter: 120

• Normal manning: approx 59

• Crude oil storage: 145 000 m3

• Dead weight: 116 000 ton

• Light weight: 57 000 ton

• Length / width: 278 / 45 m

• Living quarter: 100

• Normal manning: approx 43

Åsgard B Åsgard A

Facilities – Production facilities

Production – Gas production, injection and export 1999-2014

0

5

10

15

20

25

1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

Ga

s r

ate

[G

Sm

3/y

r]

Gas production [GSm³]

Gas injection [GSm³]

Gas export [GSm³]

Production – Liquid production 1999-2014

0

2

4

6

8

10

12

1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

Liq

uid

rate

[M

Sm

3/y

r]

Smørbukk Sør

Smørbukk

Midgard

Reservoir information – General production strategy

Intro produksjonsteknologi Åsgard

Classification: Internal 2013-01-22

5

5

-

Morvin

Tyrihans Nord

Tyrihans Sør

Yttergryta

Norne/Heidrun

Transport

Kristin

Mikkel

Midgard

Smørbukk

Smørbukk

Sør

Åsgard Transport Til Kårstø

Til Tjeldbergodden

Part of Haltenbanken

56

Åsgard Transport

• From Åsgard to Kårstø

− 707 km

− 42’’

− 70.4 MSm3/d capasity

• Fields delivering to Åsgard Transport:

− Norne

− Skarv

− Åsgard

− Heidrun

− Kristin

− Njord

− Draugen


58 Classification: Internal 2013-01-22

Åsgard Daily Production (21.01.13)

Max injection:

21.2 MSm3/d

Max: 7 MSm3/d

Max. gas

capasity Åsg B:

48.5 MSm3/d

Well interventions, Workover & completions


5

9

Comming

in 2016

IMR

SCM / FCM

Bullheading into well

- Disolver

- Scale inhibiitor etc.

Drilling rigs

New wells, Sidetrack and

re-completions

Production challenges and opportunities

• Stimulation of low productivity wells – fracturing in existing cemented liners

• Start-up and production of wells due to low reservoir pressure and/or high WC

• Minimum flow in Midgard / Mikkel loop

• High temperature (WL tractors, HNS perforation guns)

• Water detection and shut-off technology including annular flow

• Retrofit sand control screens (inside exisiting liner)

• Removal of sand fill

• Rig-site clean-up tracer technology

• Riser collapse

• Topside and subsea rate measurements

• Hydrate control


6

4

Åsgard challenges and opportunities - forsiden · Åsgard – challenges and opportunities...

Documents