can somebody pray salat when he is drunk but he is still in sence(not senceless)

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.

It is permissible for a drunken person who has not reached the state of unconsciousness to perform the prayer provided he is conscious of what he says and his prayer is valid. Al-Jassaas when interpreting the verse of Allaah (which means): {…until you know what you are saying.}[Quran 4:43], said: “This proves that the drunken person who is prevented from the prayer is the one who is intoxicated to an extent that he does not know what he says, and that the drunken person who is conscious of what he says is not meant by the prohibition of approaching the prayer.”

For more benefit, please refer to Fataawa 86752, 81461 and 81567.