The price of the company's bonds has fallen recently because of fears that the accident at a BP rig in the Gulf of Mexico will add to the cost of deep-sea oil operations.
Some prices are plunging: renting a drilling rig in South-East Asia cost $225, 000 a day last year but only $160, 000 a day in April, according to Mr Lockett of Premier Oil.
The integral transporting system for taking away drilling rig is developed to improve the portability of the rig, reduce the desired trucks, save installing time and reduce the transporting cost.