The hosts went ahead in the contest when Ana Beja broke the deadlock four minutes from half-time at Campo Caridade Stadium.
The visitors, however, did not allow Ouriense's celebration to last for too long as the Ghana international levelled matters in the 44th minute.
Mauro Pulquerio's team made the better start to the second half as Fernanda Peinado fired them in front eight minutes after the restart.
But Joao Filipe Ferreira Goncalves's side left it late to avoid their fourth defeat in a row as Juliana Domingues struck just before the final whistle.
Despite the draw, A-dos-Francos are bottom with five points from six matches, while Ouriense are fourth with 14 from seven games.