Another 67 wells planned by ONGC in Gujarat

Vol 17, PW 3 (05 Sep 13) Exploration & Production
     

ONGC is on a drilling spree in Gujarat! First it announced a 126-exploration well drilling programme then a 350-well development programme.

Now we hear it is planning another 67 exploration wells under a Rs800cr ($119m) campaign slated to begin early next year in central and south Gujarat. ONGC’s Vadodara-headquartered Western Onshore Basin will drill the wells across 23 blocks in the Vadodara, Bharuch and Surat districts, covering an already explored and productive area of the Cambay Basin.

ONGC is expected to issue a tender by November this year for a 2000-hp drilling rig and logging, cementing, perforation, casing, tubulars, testing and coring services. ONGC will also use two of its own rigs.

Of the 67 wells planned, four will be shale gas wells. “We are doing this for a shale gas study project,” says an ONGC source.

“All the shale wells will be drilled vertically. We should begin drilling once clearances come in.

” ONGC, he adds, believes the Cambay Basin holds a shale gas resource base of 200-tcf. ONGC aims to drill the four shale wells to 4500 metres TD.

But it will drill the remaining 63 wells to depths ranging from 500 metres to 3000 metres. In Vadodara district, drilling will take place at Vadodara, Dabhoi, Padra and Karjan ‘talukas’ or administrative areas.

Similarly in Bharuch district, ONGC will drill in the Jambusar, Amod, Vagra, Ankleshwar and Hansot talukas. In Surat district, ONGC will drill in Olpad and Mangrol talukas.

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