British oil giant BP is pushing US energy services firm Halliburton to pay for all the costs BP incurred in the 2010 Gulf of Mexico oil spill, the worst environmental disaster in US history.

In a US federal court filing, BP said that it was seeking full repayment of damages from Halliburton, alleging it fraudulently putting a defective cement seal on a deepwater well, causing a deadly explosion and pollution of the Gulf and neighbouring states.