The Shell Petroleum Development Corp. of Nigeria Ltd., a subsidiary of Royal Dutch Shell Plc, London, (NYSE: RDS.A; RDS.B) plans to acquire two barges and related Nigerian assets from Parker Drilling Co., Houston, (NYSE: PKD) for US$46 million. The acquisition includes barge rigs 73 and 75 and related production assets. Parker Drilling has already received a 10% deposit and anticipates closing the transaction in late June. The company anticipates that it will gain $2- to $2.5 million as a result of the sale. Parker intends to use net proceeds to pay debt.