?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Karimi+Vajargah&rft.au=Karimi+Vajargah%2C+A.&rft.aufirst=A.&rft.title=Investigation+of+tool+joint+effect+on+equivalent+circulating+density+in+deep+offshore+wells&rft.date=2013&rft.genre=proceeding