Evaluation methods of inner episodes for buried-hill reservoirs in the Liaohe oillfield

The buried hills in the Liaohe oillfied are made up of Archaeozoic metamorphic rock and Proterozoic carbonatite.The reservoirs in these hills are of the fissure-related type.The focused issue on these reservoirs is to study the inner episodes of the hills, involving lithological profiles structure, evaluation of reservoirs and reservoir characters.In this paper, I attempt to summarize a set of basic procedures and methods for the study on these aspects for the Liaohe oillfied, which are also applicable to other oillfieds with the same type of reservoirs.