Historic legislation to establish a national gas reservation scheme is before federal parliament. Experts say the biggest driver of high prices could slip free. newsiviewlistenLoading ABC NewsNews HomeWarnings gas culprit Santos could slip through reservation netShareShare articleWarnings gas culprit Santos could slip through reservation netBy energy reporter Daniel MercerTopic:Oil and Gas. A gas reservation policy looms and the industry says responsibility for the drastic measure lies firmly with one player.