KARACHI (Reuters) - Oil and Gas Development Co Ltd (OGDCL) said it had bid for BPs assets in Pakistan, estimated by analysts to be worth as much as $690 million. OGDCL, Pakistans largest listed company, said it had made a joint bid with Pakistan Petroleum Ltd (PPL) for the assets, but did not disclose a price and offered no further details. BP announced its plans to sell its upstream assets in Pakistan in July, as part of a $10 billion global asset sale aimed at raising cash to pay for its Gulf of Mexico oil spill. BPs upstream assets and related operations, which it plans to divest, include nine producing and exploration onshore blocks and four offshore exploration blocks in the Arabian Sea, according to OGDCL sources. They contribute about 14 percent of Pakistans total oil production and 6 percent of its domestic gas production. UBS analysts estimated in a July research note that BPs fields in Pakistan are worth $690 million, while Farooq Najam, an analyst at Invisor Securities Ltd estimated the assets to be worth around $362 million. BPs main assets are in Badin in the Sindh province, comprising four concessions - Badin-I, Badin-II , Badin-IIR and Badin-III. Of the four concessions, OGDCL has pre-emptive rights in all but Badin- I block, OGDCL sources said last month. They said then that if its bid succeeds, OGDCL will operate the acquired assets through a company, jointly owned by it and PPL.