You have got two places to file divorce case. One is pune and other place is Delhi, whichever is suitable to you. If your wife is also iiving in Delhi and working in Delhi, it is better to file it in Delhi. If the place, you choose is not comfortable to her, she may seek transfer of the case to the other place. Keeping this in view file the divorce petition, if you want to file it.
Further, the casual way in which you said about divorce petition, I am a little bit perplexed. It is not so easy to get divorce in Indian Courts. The grounds stipulated in the Act have to be proved before the court of law.