Abstract:

In order to solve the problem of the serious steam channeling in the development of steam huff and puff  and low reserve tapping efficiency of low permeability reservoir of Block 1 in Jinglou oilfield of Henan Province，high-resolution sequence stratigraphic classification and correlation are made for the Ⅲ5-6-Ⅳ1-3 of Hetaoyuan Formation of Block 1 in Jinglou oilfield based on the theory of high-resolution sequence stratigraphy.Ⅲ5-6-Ⅳ1-3 can be divided into 3 middle-term,10 short-term, 25 super short-term cyclic sequences according to boundaries. Fan-delta front,prodelta, subwater distributary channels and their flanks, subwater interdistributary bay,and far bars can be identified by fully applying the core,drilling,logging data. The oil reservoir type is mainly controlled by tectonics and lithology.This paper provides a new thought for broad exploration fields. The remaining oil distribution is also discussed, and the results can provide an important geological foundation for development adjustment of Jinglou oilfield.

Key words: Jinglou oilfield, sedimentary micro-facies, ministructure, remaining oil