All eyes on Oilex as it gears up for Cambay-77H

Vol 16, PW 22 (30 May 13) Exploration & Production

Oilex will be hoping it can learn from the mistakes of its botched Cambay-76H well as it prepares to drill Cambay-77H, using the same multi-stage 'frakking' techniques.

PETROWATCH learns the Australian explorer studied the profiles of 40,000 horizontal wells in the US and China before announcing plans for Cambay-77H. Next month (June) Oilex (45%) will invite EoIs for a 2000-hp rig and allied services for a one-firm and four optional well campaign at Cambay, a pre-NELP field it shares with GSPC (55%).

"EoIs for a rig and 34 other contracts will be out in the coming days," confirms Oilex. Fifteen contracts are on offer, plus contracts for well testing, completion and ‘frakking’.

Oilex wants to drill Cambay-77H to a vertical depth of 1800 metres in the Eocene low permeability tight reservoir, and then ‘complete’ it horizontally to 350 metres. “If successful,” adds Oilex, “we will apply for government permission to drill the four optional wells.

” One of them will be a vertical pilot well, completed horizontally, targeting an area that has already tested oil from two zones. If successful, the pilot well will be side-tracked 1200 metres horizontally and ‘frakked’.

A second optional well will be a deep vertical well, drilled to 3000 metres. Finally Oilex plans two production wells from damaged well Cambay-76H: one completed horizontally to 650 metres, the other completed horizontally to 1200 metres.

Oilex is in touch with six rig suppliers, among them John Energy and Shiv Vani, and also considering suitable rigs on hire to GSPC at its other blocks.