how to increase the oil recovery in gfs statfjord n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
How to increase the oil recovery in GFS Statfjord ? PowerPoint Presentation
Download Presentation
How to increase the oil recovery in GFS Statfjord ?

Loading in 2 Seconds...

play fullscreen
1 / 6

How to increase the oil recovery in GFS Statfjord ? - PowerPoint PPT Presentation


  • 101 Views
  • Uploaded on

How to increase the oil recovery in GFS Statfjord ?. Forslag til Gullfakslandsbyen. Gullfaks Sør Statfjord Formation. PDO 1995: Large volumes in the Statfjord fm. Main reservoir in the Gullfaks Sat. 7 wells 2000 Sm3/d.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'How to increase the oil recovery in GFS Statfjord ?' - zoltin


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
gullfaks s r statfjord formation
Gullfaks Sør Statfjord Formation

PDO 1995: Large volumes in the Statfjord fm.

Main reservoir in the Gullfaks Sat.

7 wells 2000 Sm3/d.

1999: F-4 T3H and G-2 T3H in production.

Produced much less than expected.

Statfjord Fm. on hold.

2001: G-3 T2H in production.

Behave in accordance to new expectations.

Unexpected gas breakthrough.

2002/2003: IOR project initiated.

Identified problems:

Limited reservoir communication

Gas limitation

gfs statfjord
GFS Statfjord

Challenge:

  • Complex reservoir with low recovery, goal +18% (LTP 2003-2008)
  • PDO – 12.6 MSm3. Today 5.1 MSm3

Wells drilled

  • Additional perforation of G-2 H and F-4 H in lower Statfjord (summer 2003)
  • G –1 H with DIACS (2003), periodically shut in.
  • G –2 YH MLT with DIACS (2004)
  • F –2 YH MLT with DIACS (2004)
  • G-3 Y3H, 3 branch MLT with DIACS (2005), SHUT in
  • GI MLT with DIACS (2006), only one branch injecting
how can we increase the recovery
Could look into:

Well solutions

Technological solutions

Drilling has so far been challenging. Simple or complex wells ?

Wells spacing ?

Increase of gas injection, number of GI ?

Uncertainties in reserve estimates

When start blowdown ?

Economic considerations

Economic development

No economic limitations, KPI: recovery

How can we increase the recovery ?
reflections could be made around
Reflections could be made around
  • What should be used as a KPI ?
    • Recovery vs. NPV
  • Who makes the decisions?
    • Petroleum law, partners influence
  • Prioritarisation of gas injection or gas export ?
    • (high gas price: more economic to sell gas than inject in marginal oil reservoir)
  • Subsea
    • rig availability a challenge
    • rig costs increasing
  • Simulation model provided, already implemented at NTNU, 2006_students