Schlumberger (SLB), which provides products and services for fossil fuel exploration, is slumping after the company reported that it is experiencing contractual delays and higher than usual seasonal weakness in its Europe/ex-Soviet Union/Africa region. Furthermore, the company warned that it's encountering weaker than expected activity on land in the U.S. and western Canada. Schlumberger expects these developments to reduce its earnings per share by 5c-7c, the company stated. In mid-morning trading, Schlumberger slumped $4.21, or 5.80%, to $68.35. A number of Schlumberger's competitors also declined, with Halliburton sliding 1.76% to $32.92, Baker Hughes (BHI) giving back 2.73% to $41.03, and Weatherford (WFT) losing 0.57% to $10.44.