The joint stock company Gazprom zarubezhneftegaz has begun drilling a third exporatory well, NEC-W-1, in Block 26 in the Bay of Bengal with the Japanese Hakuryu-5 semi-submersible drilling rig to 3,200 metres.
The drilling contract with the Japanese company, Japan Drilling Co. Ltd, was signed in February this year.
Within the context of the drilling programme, it is planned to test eight targets. The duration of the drilling, taking well-testing into account, is expected to amount to 5 months.
A 2D seismic survey was carried out at the end of 2008 - beginning of 2009 over an area of 2,824 linear kilometres for drilling preparation and the identification of drill sites, along with the interpretation and reinterpretation operations of the geophysical information received.
The drilling of the third exploratory well was not initially provided for in the minimal phased programme of exploration works. However, on the request of the Indian party, Gazprom took on the additional obligation of mineral exploration and prospecting in the Bay of Bengal.
The Production Sharing Agreement between the Indian government, Gazprom and the Gas Authority of India for the contractually-agreed sector block NEC-OSN-97/1 (Block No. 26) was signed on 3 October 2000.
The agreement came into effect on 14 November 2000 from the date of the granting of the licence to execute work on Block No. 26. The agreement provides for the construction of 3 sets of gas exploration works over 7 years with subsequent engineering work, and the development of strikes over 20 years.
The management of the PSA is carried out by a Management Committee, formed with 2 representatives from the Indian Government for every one representative from the Contracting Party.
The private joint stock company, Gazprom zarubezhneftegaz, whose interests in India are represented by Gazprom's Project Office, has been appointed as Gazprom's project operator.
Currently, within the scope of Phase I and II, 2D offshore seismic data investigation, processing and interpretation work has been carried out over an area of 2,900 linear kilometres. Based on interpretation of existing and received data, seismofacial zoning has been carried out, a geological geophysical model has been constructed, and sectors for carrying out 3D seismic survey work have been identified.
3D and 2D seismic survey work (530 square kilometres/40 linear kilometres) has been carried out, the results of which have allowed the prospects for oil-and-gas content of previous selections along with the nature of oil-and-gas enrichments to be assessed.
Two exploratory wells have been drilled – GG-1 (to a depth of 2,445 metres) and NEC-FA-5 (to a depth of 4,338 metres).