This week oil prices have followed volatile inclination. On Thursday oil prices have escalated around 2 percent. As U.S. refineries are shut because of Tropical Storm Harvey, some expected to be shut for up to two weeks. This will leads to shortage of supply in market and pushing prices up. On Thursday, closing crude values have increased.WTI on NYME closed at $47.23/bbl, prices have increased by $1.27/bbl in compared to last closing prices. While Brent on Inter Continental Exchange increased by $1.52/bbl in compared to last trading and was assessed around $52.38/bbl.