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Grieve Oil Project:
Overview:
- Field discovered in 1954 - 30 MBBL produced to date from Muddy reservoir
- Acquired by ELK in 2005
Operations:
- Field currently producing at low rates (<20BOPD) from Muddy reservoir
Projects:
Upper Sands:
- Opportunity in un-exploited Upper Sand reservoir(s)
- Upper Sand testing to date has been inconclusive
- A number of additional potential oil reservoirs are present at Grieve
- Live oil has been seen in a number of Grieve temporary abandoned wells
- Nearby fields produce from upper sand reservoirs
- In Feb 2006, independent reservoir engineers calculated potential OOIP of 51.4 MBBLs in four Grieve Upper Sands
- Upper Sands have never been produced at Grieve
- Shallow well in June 2007 had oils shows but no producible oil
- A new well location is to be selected and drilled in conjunction the Muddy enhanced oil recovery (EOR) project
Enhanced Oil Recovery:
Enhanced recovery of oil from the Muddy reservoir is being considered using two different technologies:
CO2 Flood:
- EORI study indicates 23 MMBbls of recoverable Muddy oil with CO2 miscible flood
- Nitec study indicates 21 MMBbls of recoverable Muddy oil with CO2 miscible flood
- Ryder Scott to certified 3P reserves of 18.6 MMBbls with CO2 miscible flood
- Source of CO2 is being negotiated
- Joint Venture partner is being sought
Chemical Flood:
- The University of Oklahoma (OU) has been commissioned to conduct a chemical flood study of the Muddy reservoir
- The OU study will also address the economic feasibility of the flood as well as establish expected recovery
- Chemical flood option allows for a pilot study to be undertaken and thereby establish a 2P reserve classification. As a preflush to the pilot, water injection may demonstrate the presence of movable secondary oil (waterflood)
Project Photos:
Photos of the Grieve oil fields can be found here.
