Presentation is loading. Please wait.

Presentation is loading. Please wait.

Classification: Internal Status: Draft Eksperter i Team – Gullfakslandsbyen 2008 Gullfaks historie – et norsk svennestykke Leif-Kristian Teviterå, Corporate.

Similar presentations


Presentation on theme: "Classification: Internal Status: Draft Eksperter i Team – Gullfakslandsbyen 2008 Gullfaks historie – et norsk svennestykke Leif-Kristian Teviterå, Corporate."— Presentation transcript:

1 Classification: Internal Status: Draft Eksperter i Team – Gullfakslandsbyen 2008 Gullfaks historie – et norsk svennestykke Leif-Kristian Teviterå, Corporate trainee, StatoilHydro Gullfaks satelitter Petec

2 2 Structural Depthmap – Base Cretaceous Area : 50 km2 Top Structure : 1700 m TVD Dipping : 0-20 West Oil-water contact : 1947 m TVD Initial pressue : 310 bar Bubblepoint pressure : 220 bar Initial temprature : 72 deg C Formation volume factor : 1,2 Oil viscosity : 1.2 cp Oil gravity : 36.9 API Gullfaks reservoir data

3 3 Gullfaks main field, WE cross-section

4 4 The Gullfaks-field

5 Classification: Internal Status: Draft For at en skal få danne et olje/gas felt er det flere forhold som må oppfylles : Reservoir Trap Reservoar Felle SealSegl Modning og migrasjon av hydrokarboner

6 6 Infill of oil (migration)

7 7

8 8 Implemented Oil Recovery Measures at Gullfaks Water injection from start Upgrading of water injection capacities 4D seismic and inversion Tracers Hydraulic fracturing in low perm reservoirs WAG (Water alternating gas) injection ”Huff and puff” gas injection Extensive exploration activity within drilling reach from platforms => new volumes Sand control in most wells ”Designer wells” (horizontal, 3D) Extended reach drilling (10 km) Monobore completions DIACS -”Smart wells” Multilateral wells (ML) Coiled Tubing drilling (CT) Through tubing drilling (TTRD) Rig assisted snubbing (RAS) Underbalanced drilling (UBD) Expandable liners

9 9 Oil Recovery Measures studied Studied, but discarded: Surfactant injection (1992 pilot) Gel blocking (1992 pilot) CO 2 miscible injection (2000) Aerobic Microbiological EOR (2006) Currently being studied: Reservoir characterisation, remaining saturation and relative permeability Temprature effects Building new reservoir simulation models WAG evaluations EOR with water based methods CO2 studies

10 10 Well targets Gullfaks in the past and present; Steak vs. ragu Gullfaks

11 11 Korleis drive eit felt som er på haleproduksjon?

12 12 Finne nye boremål og planlegge nye brønnar utgjør størsteparten av arbeidsoppgavene til petroleumsteknisk (Petek) personell på Gullfaks

13 13 By repeated well-tests we can monitor how the flooding affect our reservoirs


Download ppt "Classification: Internal Status: Draft Eksperter i Team – Gullfakslandsbyen 2008 Gullfaks historie – et norsk svennestykke Leif-Kristian Teviterå, Corporate."

Similar presentations


Ads by Google