KUALA LUMPUR (AFX-ASIA) Ð Shares of Petra Perdana Bhd have been boosted on speculative buying and hopes that the company will secure a sizeable portion of the RM2 billion offshore installation project from the consortium of Petronas Carigali, ExxonMobil and Shell, dealers said. (US$1=RM3.8). Dealers also noted a news report that said Petra is in…