With the DGH contending that ONGC and RIL have not undertaken the drill stem tests (DSTs) at their respective hydrocarbon finds in the KG Basin, the oil ministry is contemplating policy changes to ensure that such stand-offs do not recur regularly, reports fe Bureau in New Delhi. ?The ministry would soon convene a meeting of the DGH and explorers to review the ?contractual? and ?technical? necessity of carrying out the DST. After deliberations, the ministry would seek Cabinet approval to put in place a long-term solution,? a senior petroleum ministry told FE.