Newfield Exploration Company was a petroleum, natural gas, and natural gas liquids exploration and production company organized in Delaware and headquartered in Houston, Texas. In February 2019, the company was acquired by Encana. As of December 31, 2017, the company had 680 million barrels of oil equivalent (4.2×109 GJ) of estimated proved reserves, of which over 99% was in the United States and 1% was in the South China Sea. The reserves were 37% petroleum, 19% natural gas liquids, and 44% natural gas. The company's properties were as follows: