BP has sold its 93% interest in the Wattenberg, Colorado natural gas processing plant for $575.5m (£352m) as it continues its programme of asset disposals after the Macondo, Gulf of Mexico, oil spill and rig disaster.Anadarko, its partner in the ill-fated Macondo well is buying the gas plant for cash. The plant processes natural gas from the Denver Julesburg Basin, an area where BP no longer has equity gas production. The transaction is expected to close by mid-year. The sale is the latest is a string of US asset sales in the wake of the disaster that struck Macondo last year including the sale of a batch of oilfields to Apache for $7bn. The group has a target of $30bn of sales by the end of the year.