. schlumberger currently anticipates contributing approximately $ 350 million to its postretirement benefit plans in 2016 , subject to market and business conditions . schlumberger maintains a 20ac5.0 billion guaranteed euro medium term note program . this program provides for the issuance of various types of debt instruments such as fixed or floating rate notes in euro , us dollar or other currencies . schlumberger has issued 20ac0.5 billion 1.50% ( 1.50 % ) guaranteed notes due 2019 under this program