The North Balol Block covers an area of 27.3 km² and is located west of the Meshana town, Gujarat, India. The field was discovered in February 1972 by ONGC with the North Balol-1 well. In total, nine exploration wells have been drilled in the field – North Balol-1 to -9. The North Balol-1 to -4 wells are gas bearing; wells North Balol-5 and -8 are oil bearing and wells North Balol-6, -7 and -9 are dry. Presently, only two wells North Balol-1 and -5 are producing. The North Balol-1 and -5 wells were reactivated in November 2005, but production from the North Balol field only recommenced in August 2006 at an initial oil rate of ~0.6 MMscf/d. As of March 2013, cumulative gas production is 2.75 Bscf.
The North Balol Block is covered by 2D seismic data out of which fourteen lines were used by define the structure. A total volume of 16.87 km² of 3D seismic is located on the Block, which is part of a 69.08 km² 3D survey that was acquired by ONGC in 1985-86 and reprocessed by GSI in 1986-87. The overall 3D coverage of the Block is around 62%.
|Sl||Name of Block||Participating Interest||Operator||Joint Venture Partners|
|1.||Kanawara||30%||GNRL Oil & Gas Ltd.||GSPC(70%)|
|2.||North Kathana||30%||GNRL Oil & Gas Ltd.||GSPC(70%)|
|3.||Allora||30%||GNRL Oil & Gas Ltd.||GSPC(70%)|
|4.||Dholasan||30%||GNRL Oil & Gas Ltd.||GSPC(70%)|
|5.||North Balol||30%||HOEC||GSPC(45%) HOEC(25%)|