• EnergyPrism.com has acquired EnergyStorehouse.com, an online market for used and surplus oil and gas equipment. EnergyPrism.com will incorporate the EnergyStorehouse.com transaction capabilities and operations into its offerings. Terms were not disclosed. • PetroConnections Inc., a Houston-based online broker of oil and gas properties, has received an equity investment from The Weddington Co. LLC, a Los Angeles-based venture capital firm headed by former Arco chief executive, Lodwrick M. Cook.