But companies are still feeling the pinch of the massive
glut of
oil worldwide, which has brought down markets and remains a major policy discussion among international producers.
While the
oil industry waits for the
worldwide petroleum
glut to decrease — something the International Energy Agency believes might occur by the end of the year — frack sand investors can take comfort in the knowledge that 70 %, 88 %, and 87 % of US Silica's, Hi - Crush Partners», and Emerge Energy's respective current and medium - term production is protected by highly profitable contracts.