Investors are betting against Opec successfully cutting enough oil production to counteract the global economic slowdown as the cartel on Thursday appeared deeply divided about how to respond to tumbling prices.

Most Opec ministers arriving in Vienna for Friday’s emergency meeting voiced their support for a cut, but had widely divergent views about its size. The more hawkish nations want a cut of about 2m barrels a day while others favour a 750,000 b/d cut.