Relax sit tight before taking any step ... take out your hand easy from the rock.
Firstly Marriage is registered or not , Marriage can only be dissloved by decree of divorce.
Second it depends weather your wife also want divorce or not if you both are agree then file a Section 13(b) of hindu marriage act, mutually divorce petition. In this a settlement deed will be make out along with this and file it.
If there is no mutual concern then you have to brief it more. There is no clearity in your above facts.