The same Seydlitz survived Jutland and reached Scapa Flow

Was the Seydlitz at Scapa Flow the same ship that barely survived Jutland?

Yes; it was repaired after Jutland and returned to service before the High Seas Fleet's internment.

The Seydlitz associated with the High Seas Fleet's final internment was the same battlecruiser that survived Jutland. It was repaired after the battle. Warspite provides the comparison with another badly damaged ship that underwent repairs.