Santos CSG Pty Ltd., a subsidiary of Santos Ltd., Adelaide, Australia, (Nasdaq: STOSY, Australia: STO) has increased its unsolicited bid to acquire Queensland Gas Co. Ltd., Brisbane, Australia, (Australia: QGC) to A$1.80 per share in a deal valued at US$752.7 million (A$960 million). The previous offer was for A$1.26 per share in a deal valued at US$451.5 million (A$606 million). Queensland Gas' assets are in the Surat Basin in southern Queensland, and the company has a current focus in the Berwyndale South Field. The company also has pilot wells in the Argyle East prospect 25 kilometers southwest of Chinchilla, Australia. Reserves are 142.6 billion cubic feet of proved gas, 258.7 billion probable, and 1.3 trillion possible for total reserves of 1.7 trillion cubic feet of gas.