(EnergyAsia, February 4, Monday) — Singapore’s Keppel Corp said its 2007 net profit surged 50.6% to S$1.13 billion, thanks mostly to demand for its oil rig construction services. (US$1=S$1.43). Its revenue jumped 37.2% to S$10.43 billion.Keppel’s offshore and marine division, which includes oil rig and ship building as well as ship repair and conversion, provided…