The oil spills from offshore wells operated by ConocoPhillips in China\'s Bohai Bay are posing political and technical challenges for the oil company far messier than the crude and drilling mud seeping from the seabed. The company yesterday said that it had suspended all drilling, water injection and production at the affected Penglai 19-3 oil field, one of China\'s biggest. Operations are currently stopped at 180 producing wells and 51 injecting wells, for a total of 231 wells, said a statement by Houston, Texas-based ConocoPhillips, which operates the field in a venture with state-owned China National Offshore Oil Corp. CNOOC, which owns 51 per cent of the venture, said the suspension of production in Penglai 19-3 would reduce output by 40,000 barrels a day, in addition to the 22,000 barrels a day lost with the shutdown of the two wells where the spills occurred.