The UK high court of justice has blocked the Federal Government from appealing last month's ruling dismissing a $1.7 billion claim against JP Morgan Chase Bank over the transfer of proceeds from the sale of OPL 245 in 2011.
The high court says there was no real prospect of overturning the ruling.
Judge Sara Cockerill ruled that the Nigerian government could not prove that it was defrauded, saying it might be that with the benefit of hindsight.
The US Department of Justice previously investigated the OPL 245 deal and announced in October 2019 that it was closing the case.