ONGC plans even more Mumbai High wells

Vol 17, PW 16 (27 Mar 14) Exploration & Production
     

In our last issue we reported ONGC is planning 89 wells under its Phase-III development of Mumbai High, which it hopes to complete by 2017.

Now we hear ONGC is planning an additional 40 or so development wells by 2018, according to a concept paper completed this month (March) by the Mumbai High Asset team. This reveals that ONGC plans to drill 135 development wells and 86 sidetrack wells besides working over 109 wells by end-2018.

In 2014-15, ONGC will drill 36 development wells, sidetrack 27 wells and work over 29 wells. In 2015-16, ONGC will drill 36 development wells, sidetrack 27 wells and work over 30 wells.

In 2016-17, ONGC will drill 38 development wells, sidetrack 17 wells and work over 25 wells. Finally, in 2017-18, ONGC will drill 25 development wells, sidetrack 15 wells and work over 25 wells.

The concept paper will be used by other ONGC teams to work out requirements for rigs, supply vessels, helicopters, casings, tubulars, mud, chemicals and other services/products. ONGC used an internal estimate of $95,000/day for jack-up hire to calculate the cost of drilling and completing each development well at Rs50cr ($8m), each sidetrack at Rs55cr ($9m) and each work over at Rs10cr ($1.7m).

"These are indicative numbers," says an ONGC source. "The precise number of wells will vary depending on ground realities.