GSPC for open hole testing at exploration well KG#30

Vol 11, PW 6 (26 Jul 07) Exploration & Production

GSPC has decided against a conventional Drill Stem Test at exploration well KG#30 on KG-OSN-2001/3.

Instead, we hear, GSPC will carry out an â€کOpen Hole DST’. Plans were to do this test late last week over three or four days.

In the â€کOpen Hole DST’, GSPC will not run casings and instead will leave the hole open to observe what flow comes up. No chokes will be used initially but one can be installed later if the flow is felt to be of a commercially viable quantity.

GSPC has earmarked three zones between 2000 metres and 2900 metres for the â€کOpen Hole’ DST. Why not the conventional DST Says an observer: “While the logs were good, GSPC did not find much evidence of hydrocarbons in the course of drilling.

â€‌ But according to a source, “the â€کresistivity’ was very goodâ€‌. â€کResistivity’ is one of the parameters recorded while logging.

“The maximum â€کresistivity’ recorded was between 70 and 80-ohm metres,â€‌ he adds: “The â€کresistivity’ started from 20-ohm metres. GSPC is going for the (open hole) DST only on the basis of the good â€کresistivity’.

â€‌ KG#30 lies in the northern Graben area of the block and is being drilled by Deep Driller-1. The northern Graben area is a new prospect on this block.

KG#30 was spud on May 8th in 45 metres water depth, to a TD of 4200 metres. GSPC was hoping to find oil at this well, which lies on the â€کup dip’ of Reliance’s D-6 block in the KG deepwater.

If the open hole DST at this well is not successful, Deep Driller-1 will, most likely, be moved to location KG#18, which lies in the northern part of the Deen Dayal discovery made at well KG#8. Other possible well locations for Deep Driller-1 are at PT2, PT3, PT4 or PT6.

GSPC will make a final decision on the new location for Deep Driller-I when it nears completion of testing KG#30.