NEW YORK — Clay Graham has signed a three-year overall deal with Warner Bros. Television worth $8 million. Under terms of the pact, he will continue as executive producer of the WB-produced ABC hit “The Drew Carey Show” in addition to developing new shows.Graham has worked on “Carey” since it was created by Bruce Helford. The deal was sealed between WB TV president Tony Jonas and Graham’s Paradigm agent Debbee Klein and attorney Barry Hirsch. WB often inks such pacts with the writer/producers responsible for running hits. “ER” exec producer John Wells has the license to create five pilots for NBC, which his staff is working on. “Friends” architects Kevin Bright, Marta Kauffman and David Crane have similar deals, as does “Carey” creator Helford.