This week saw two initial public offerings in the energy sector at the Nasdaq. Extraction Oil & Gas (XOG) - Get Extraction Oil & Gas, Inc. Report was priced at the high end of its range and attracted buyers, while Mammoth Energy (TUSK) priced at the low end and struggled on its first day of trading. But the uneven performance likely won't deter other companies from going public, according to Tamar Essner, energy analyst with Nasdaq Advisory Services. She says there is a backlog of companies waiting to test the public markets, and will likely to do so next year, as long as oil prices remain stable. Essner believes oil prices will remain in the $50 range, and will not retest lows. TheStreet's Rhonda Schaffler reports from the Nasdaq Marketsite.