LGO Energy has recently announced that its latest development well, GY-674, which was spudded on 21 May 2014, has reached total depth. Electric log interpretation from both the Goudron and C-sand intervals confirms the presence of recoverable hydrocarbons – the net oil pay in the Goudron Sandstone is estimated to be 492 ft and net hydrocarbon pay in the C-sand main target is estimated at 277 ft.
LGO's Chief Executive, Neil Ritson, commented: "Well GY-674 included the coring of part of the C-sand reservoir interval which will be fully analysed and the results used in our ongoing studies which includes an enhanced oil recovery project. Further cores are planned in future wells. Production from Pad 4 is now expected to commence in the next few weeks."
Well GY-674 is the third of seven wells planned for 2015. The net oil pay in the Goudron Sandstone was encountered between 520 and 1730 ft measured depth (MD) with an estimated net pay totaling 492 ft. The oil and gas bearing C-sand interval was encountered at a depth of 2565 feet MD and the total depth of the well was 3458 ft MD. Net hydrocarbon bearing pay in the C-sand interval has been provisionally estimated as 277 ft. These observed net pay zones are in line with the prognosis for this well.
As planned, additional data was collected in GY-674 to assist with ongoing field development studies. A 30 ft core was taken in the C-sand interval with over 92% recovery. A series of down-hole pressure tests were also conducted in the C-sands and it is anticipated that a flow rate and build-up test will be conducted at initial flow in order to further assist with the collection of reservoir engineering data.
Future plans for production
Well GY-674 has now been successfully cased for future production and the rig will be moved to drilling Pad 5 where it is expected to spud the fourth well of the 2015 program, GY-675. This well is to be drilled to a total depth of 3700 ft MD. Well GY-675 is again targeting a C-sand reservoir interval and the top Gros Morne sandstone reservoir (upper C-sand) is anticipated at 1900 ft MD.
Adapted from press release by Cecilia Rehn