One of the features of the find familiar spell is to deliver spells with a range of "touch" cast by the wizard:
Finally, when you cast a spell with a range of touch, your familiar can deliver the spell as if it had cast the spell. Your familiar must be within 100 feet of you, and it must use its reaction to deliver the spell when you cast it. If the spell requires an attack roll, you use your attack modifier for the roll.
The use of the familiar's reaction to deliver the spell seems to be geared toward touch spells that can be cast on a single turn, such as shocking grasp.
However, suppose I want to cast identify on an object out of my reach by having my owl familiar fly up and land on it, and then cast the spell with the familiar touching the object. Could I have the familiar spend 1 minute sitting on the object while I cast the identify spell?
If so, does the familiar simply spend 10 rounds using its reaction each round to continue delivering the spell? Or does the requirement for delivering the spell using the familiar's reaction limit this feature to only spells that can be cast during a single turn?