A BELL 206 HELI; RETURNING FROM AN OIL RIG TRIP; ILLEGALLY ENTERS A TEMPORARY TFR WHEN 13 MI SE OF ZZZ; US.

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ON JUL/FRI/03; I WAS DISPATCHED ON A PART 135 FLT FROM ZZZ ARPT TO AN OFFSHORE OIL PLATFORM LOCATED APPROX 5 MI S OF ZZZ1; US. ON JUL/SAT/03; I WAS DISPATCHED TO A SATELLITE OIL PLATFORM THAT HAS NO COM CAPABILITY. WIHTOUT SHUTTING DOWN; I DEPARTED FOR ZZZ ARPT. I PROCEEDED TO A POINT APPROX 15 MI SE OF ZZZ ARPT AND TUNED IN ZZZ ATIS. MY ALT AT THIS POINT WAS BTWN 600-700 FT AGL. I DID NOT HEAR THAT ZZZ ATIS INDICATED TFR INFO AVAILABLE ON ZZZ2 COUNTY RADIO FREQ. AT APPROX 13 MI SE OF ZZZ I CONTACTED ZZZ TWR FOR CLASS B CLRNC TO THE S HELI PAD. I RECEIVED A XPONDER CODE AND CLRNC INTO ZZZ CLASS B APPROX 3 MI S OF THE ZZZ ARPT. THE TWR OPERATOR DIRECTED ME TO CONTACT THE ZZZ APCH CTL SUPVR AT A TELEPHONE NUMBER WHICH I WAS GIVEN. IMMEDIATELY AFTER LNDG I CONTACTED THE SUPVR WHO NOTIFIED ME THAT A TFR WAS ACTIVE AND THAT I HAD MADE AN IMPROPER INCURSION. THE APCH CTL SUPVR REQUESTED MY FULL NAME; ADDRESS; AND PLT LICENSE NUMBER. I APOLOGIZED FOR ANY PROB THAT I MAY HAVE CAUSED. I EXPLAINED THAT I HAD BEEN ON AN OFFSHORE OIL PLATFORM FOR 2 DAYS AND HAD NO IDEA THAT A TFR HAD BEEN ESTABLISHED.