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BANGKOK, Sept 22 (Reuters) - Thailand's top oil and gas explorer, PTT Exploration and Production Pcl, said on Monday it has acquired 20 pct stake from Royal Dutch Shell in Brazilian offshore oil and gas concession BM-ES-23.
"The joint venture partners plan to conduct exploration and appraisal drilling during 2014-2015," the company's CEO Tevin Vongvanich said in a statement. (Reporting by Apornrath Phoonphongphiphat; Editing by Richard Pullin)