On Feb. 15, 2018, we announced an executed agreement to sell our deepwater Gulf of Mexico assets. The transaction is expected to close in the second quarter of 2018.
Three recent projects in the Middle Miocene system of the deepwater Gulf of Mexico almost doubled our production in 2016 compared to just a year earlier: Big Bend and Dantzler began producing in late 2015, and Gunflint came on line in mid-2016.
The U.S. Gulf of Mexico has been a part of the Noble Energy story for nearly half a century. When we acquired our first offshore block in 1968, we were one of the first independent producers to explore the area. We moved into deepwater U.S. Gulf of Mexico 20 years ago, making our first deepwater discovery there in 2001 followed by first production in 2005. Between 2006 and 2014, we made nine deepwater Gulf of Mexico discoveries.
With eight producing fields today, our Gulf of Mexico operations are major exploration and project execution success stories, with potential for even more in the future.
We also operate two deepwater production platforms offshore the Gulf of Mexico: Thunder Hawk and the Neptune Spar.
Our production in the U.S. Gulf of Mexico is currently about 85 percent oil and 10 percent natural gas, with the remainder natural gas liquids.