A rift between OPEC members deepened over the weekend, as producers in the cartel moved in different directions amid falling oil prices. Venezuela, which has been one of the most outspoken proponents of a production cut by the Organization of the Petroleum Exporting Countries, called over the weekend for an emergency meeting of the group to respond to falling prices. But Kuwait said Sunday that OPEC was unlikely to act to rein in output. Saudi Arabia, meanwhile, appeared to expand on its recent move to defend its market share at the expense of other members by aggressively courting customers in Europe. Traders said Saudi Arabia is now asking for stronger commitments from some of its buyers in Europe, a move that would lock in those customers, including any new ones it would gain with recent price reductions.