Swedish oil company Tethys Oil , which has Oman as its core area of focus, said it plans to invest around $47 million in 2021 in its portfolio of upstream oil & gas assets in the Sultanate in 2021. The company would continue to capitalise on “promising growth opportunities in the Sultanate of Oman” linked to its “enhanced asset portfolio, Tethys Oil Managing Director Magnus Nordin was quoted as saying ...