BRIEF-Amerisur Resources to extend commercial area of Colombian Platanillo field
May 7 (Reuters) - Amerisur Resources Plc :
* Amerisur resources - contract update
* Update on Platanillo exploration and production ("E&P") contract in Colombia
* Expects to sign required annexe to Platanillo E&P contract within next weeks
* Will extend current contract essentially to national frontier with Republic of Ecuador and is made without associated drilling obligations or payments
* CEO says - estimates between 3.9 and 5.0 million barrels of oil in new reserve potential Source text for Eikon: Further company coverage:
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