Newfield entered Oklahoma in 2001. Today, we have more than 500,000 net acres in the Anadarko and Arkoma basins combined. The largest producing area in our portfolio is located in the Anadarko Basin with approximately 400,000 net acres in our SCOOP and STACK plays. At year-end 2017, the Anadarko Basin comprised 70 percent of our total proved reserves. During 2017, Newfield participated in approximately two dozen resource expansion tests in the Sycamore, Caney, Osage and Meramec/Woodford Extension (SCORE) areas. Our efforts to date and the results of the SCORE program contribute to the identification of more than 6,500 risked locations and 8,000 unrisked locations in the Anadarko Basin.
In 2018, the Company is transitioning toward drilling multi-well developments utilizing various spacing units. The Company plans to invest as much as $1 billion in the Anadarko Basin over the next year to further grow production and cash flow from these assets.