(a) the total number of drilling rigs owned by the Oil and Natural Gas Corporation (ONGC) for doing drilling works in the oil wells in the Nagapattinam and Thiruvarur Districts in Tamil Nadu:
(b) Whether these drilling rigs are being given to private players by the ONGC for doing drilling works instead of doing themselves in Vedaranyam and Mayiladuihurai areas in Tamil Nadu;
(c) If so, the main reasons therefore;
(d) the drilling units that have been done by the private players with the help oi` such drilling rigs of ONGC; and
(e) the amount spent so far through this?