The well spud on 2 March and progress to date has seen the completion of the surface hole down to depth of 3,500 feet, casing will now be set before the resumption of drilling.
The well programme is partnered with Premier Oil PLC (LON:PMO) which is largely funding the venture that aims to test a potentially significant discovery previously unearthed by BP back in the 1990's.
Malguk-1 was the original discovery well, with oil shows over multiple horizons, though it was not tested at the time due to complications at the end of the programme.
The Charlie well aims to intersect up to seven stacked prospects, which are together estimated to host some 1.6bn barrels of prospective resources.
Premier is covering the well costs up to US$23mln, via a farm-out agreement.