You need a non-comedogenic moisturiser which doesn’t cause any breakout or add to the oily state of the skin. Squalene, ceramide containing moisturisers which do not block the pores are recommended for oily skin. Please consult a dermatologist for thorough analysis of your skin to get a customised prescription suitable for your skin. Each one has a unique skin and has to use  best suitable products to maintain a healthy skin. Open pores can be reduced by using retinol containing creams at bedtime. If they are severe procedural treatments like laser toning, micro needling radio frequency can help.