GSPC discovers 70-metre gross oil column at KG block

Vol 10, PW 13 (19 Oct 06) People & Policy

Testing of well KG#15 is still a few days away but optimism is growing over the expected results.

Much of this stems from a belief at GSPC that KG#15 is the most scientifically drilled of all the wells on this block. Results from Modular Dynamic Testing (MDT) of four upper zones between 2700 metres and 4900 metres are encouraging.

GSPC is learnt to have encountered condensate and oil at a depth of 2784 metres and (crucially) a gross oil column of between 60-70 metres in one of the upper zones. Details are still sketchy and we have no data about net pay and the API number or other critical information, but we can reveal that the MDTs have revealed hitherto unknown information about pressure, mobility and other key parameters.

Positive results from MDTs are accepted as discoveries globally, we hear, even though oil does not flow to surface as it does during a Drill Stem Test or a production test. GSPC has also taken seven core samples and knows which of the upper zone intervals is hydrocarbon bearing.

Like KG#8 and KG#17, this well is also a high pressure, high temperature well. There have been no nasty surprises, adds a source.

Unlike the previous two wells. Intermediate logging has been carried out and GSPC does not expect to spend much time logging from 4900 metres to the completed depth.

GSPC plans to test a maximum five or minimum two lower zones. There is no need to test all the zones, we are told.

Much data is already available from the upper zone MDTs and equivalent upper zones tested earlier in KG#8. After this well GSPC wants to drill a shallow well to target the upper oil column in KG#15.

This shallow well will be drilled from the same location as KG#15, says a source. But it will be deviated horizontally at an 80-degree angle at 2600 metres depth and drilled parallel to the oil and condensate layer.