i3 Energy reaches total depth at Liberator well

UK oil and gas company i3 Energy has reached total depth at its operated Liberator well 13/23c-9 located in the UK North Sea. i3 is now preparing to obtain a vertical seismic profile in the well and to run a shear wave sonic log. 

Borgland Dolphin rig / Image by Stig Silden/Wikimedia – shared under CC BY-SA 3.0 license

i3 Energy hired the Borgland Dolphin rig last April for its undeveloped Liberator oil field and Serenity prospects in the North Sea. The rig completed its acceptance testing ahead of drilling operations in the UK North Sea in mid-August.

i3 Energy announced on Tuesday that the 13/23c-9 pilot well drilled by the Borgland Dolphin on its 100% owned Liberator field had reached total depth at 5818 ft True Vertical Depth subsea (TVDSS) in the Valhall formation.

The objectives of this pilot well are to enable a future development well to be positioned at an optimal location in the upper Captain sands channel in the south-eastern area of the Liberator field.

According to the company, preliminary petrophysical information obtained from the Measurement While Drilling (MWD) tools indicate that the targeted upper Captain sand has not been penetrated and is pinched out at the 13/23c-9 location.

The company said that the lower Captain sand is present in the well and is below the estimated oil water contact as expected.

On initial tie to the seismic data, the well appears to be located proximal to the main upper Captain channel fairway and further well data is required in order to interpret and locate the key reservoir upper Captain channel edge. As such, preparations are being made to obtain a vertical seismic profile (VSP) in the well and to also run a shear wave sonic log, after which 13/23c-9 will be plugged and abandoned as planned.

These data will be used to re-calibrate and update the existing seismic model such that options and plans for further operations at this location to meet the objective of locating a future development well in the south-east area of the field can be made.


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