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MÆRSK OLIE OG GAS AS – GYMNASIE OPGAVE - 2008

MÆRSK OLIE OG GAS AS – GYMNASIE OPGAVE - 2008. Velkommen til olie industrien – MAERSK OLIE OG GAS AS. Se den positive side! I 2008 vil din rådne krop koste 11 kr. literen på tanken!. Oooooohh…! Jeg kan se, at du har en vigtig rolle, at spille i olie industrien!.

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MÆRSK OLIE OG GAS AS – GYMNASIE OPGAVE - 2008

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  1. MÆRSK OLIE OG GAS AS – GYMNASIE OPGAVE - 2008

  2. Velkommen til olie industrien – MAERSK OLIE OG GAS AS Se den positive side! I 2008 vil din rådne krop koste 11 kr. literen på tanken! Oooooohh…! Jeg kan se, at du har en vigtig rolle, at spille i olie industrien!

  3. The Geology Case – now it is your turn! MY OWN LITTLE OILFIELD THE MOLO FIELD OPGAVE OPGAVE – beregn olie mængden i et reservoir

  4. Gross Rock Volume is: Volume of rock containing our reservoir STOIIP (Stock Tank Oil Initially In Place) or GIIP (Gas Initially In Place) is: Amount of hydrocarbons present in our reservoir RESERVES are: Hydrocarbons we can produce (given present conditions) OPGAVE – Baggrundsinformation 1

  5. Recovery Factor is depending on: Reservoir Quality & Conditions Oil and Gas Type Number of Production Wells and Type (Cost) Production Method (Enhanced Recovery) OPGAVE – Baggrundsinformation 2 RESERVES = [STOIIP] · [Recovery Factor]

  6. OPGAVE – Baggrundsinformation 3 • YOUR FACTS: • We have 2 seismic profiles across the reservoir • The MOLO-1 well penetrated the top of the reservoir at a depth of XXXX feet • An oil-water contact was found in MOLO-1 at a depth of XXXX feet • The average porosity (Φ) was found to be 0.XXX (XX.X vol.%) • The penetrated reservoir is reduced by interspaced non-reservoir rock → N/G ratio of 0.90 (90 vol.%) • The average water saturation (Sw) is 0.XX (XX vol.%) • The Formation Volume Factor (FVF) is 1.2 (the reduction in oil volume due to loss of gas content when moving from reservoir pressure and temperature to surface conditions) • The Recovery Factor (RF) is estimated to be 0.25 (i.e. 25 % of the STOIIP will be produced to surface).

  7. OPGAVE: My Own Little Oilfield 1 • YOUR TASK: • Calculate the Gross Rock Volume (GRV) • Calculate Stock Tank Oil Initially In Place (STOIIP) • Calculate the Reserves

  8. NORTH MOLO-1 well SOUTH OPGAVE: My Own Little Oilfield 2 WEST EAST Seismic Profiles

  9. OPGAVE: My Own Little Oilfield 3 NOTE – feet! MOLO-1 well feet 5700 6000 6300 6600 6900 7200 7500 7800 Top of Reservoir Oil-Water Contact / Transition Zone 1000 NOTE – meter!

  10. OPGAVE: My Own Little Oilfield 4 MOLO-1 A wireline log showing the porosity and hydrocarbon saturation profile from the well Approximately 180 ft of chalk oil-reservoir h 60 meters

  11. OPGAVE: My Own Little Oilfield 5 Apply a known geometrical shape to the reservoir shape: The Spherical Cap h α

  12. α h 0 OPGAVE: My Own Little Oilfield 6 Gross Rock Volume is then the volume of a spherical cap with a height ofhand a radius ofα his estimated using the log from the well – You then findαfrom the seismic profiles Calculate GRV from this expression (expect a large number!): GRV = 1/6·π·h·(3·α²+h²)

  13. Gross Rock Volume (GRV) Net to Gross (N/G) Porosity (Φ) Oil Saturation (Soil equal to 1 minus Water Saturation Sw) Oil Formation Volume Factor (FVF given as a value of 2) OPGAVE: My Own Little Oilfield 7 Calculate STOIIP using this expression (the unit at this stage is m3): STOIIP = GRV ∙ N/G ∙ Φ ∙ Soil / FVF

  14. OPGAVE: My Own Little Oilfield 8 We now re-calculate STOIIP in m3 to STOIIP in million bbls using this expression: STOIIPmillion bbls= STOIIPm3 ∙ 6.29 / 1,000,000 Finally the reserves are calculated given a recovery factor of 0.25 (25%): Reserves = STOIIPmillion bbls ∙ RF

  15. OPGAVE: My Own Little Oilfield 9 – Excel regneark til beregning

  16. The End MÆRSK OLIE OG GAS AS How can I learn more? http://www.maerskoil.com

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