Essar warns Greka must perform Vol 17, PW 10 (19 Dec 13) News in Brief Greka Drilling could be in for a rude shock if its flagship technology to improve CBM recovery during drilling... Buy this article forRs590 $9 For a 30-article or annual subscription rates click here RelatedONGC wants CBM rig to replace no-show Greka (14 Dec 17) Greka misses 2nd ONGC rig deadline (30 Nov 17) Essar circles Greka CBM rig contract with ONGC (19 Oct 17) Greka lands itself in another payment dispute (28 Jul 16) Greka in payment row with Arabian Oilfield (16 Jun 16) Greka argues with Essar over LiFaBric costs (08 Oct 15) Essar disappointed with Greka Drilling (23 Apr 15) Greka waits for Essar cash before deploying rigs (10 Apr 14) Essar warns Greka must perform (19 Dec 13) Anxious students wait for Greka deal with Essar (14 Nov 13)