The Characteristic Of Sequence Stratigraphy And Sedimentary System Analysis On Nantun Member In Huhehu Depression

In this paper, guided by the theory of sequence stratigraphy, by means of sag in theseismic, drilling, logging, core and paleontological data integrated research, set up a call andcretaceous south lake sag group of sequence stratigraphic framework. Shout and cretaceouslake sag is divided into eight tertiary sequences (Sq1-Sq8), our research scope for Sq2andSq3, and in the sequence framework has carried on the division of sedimentary facies andsedimentary system research, identified the south tuen group mainly developed fan delta andbraided river delta. Fan delta sedimentary system are mainly distributed in the sequence of thesteep slope zone, and braided river delta sedimentary system are mainly distributed in thegentle slope belt of each sequence. The evolution of the sedimentary system in plane andvertical controlled by paleostructure and paleogeomorphology. Shout and lake sag of southtuen set the interval type reservoir belongs to low porosity, extra-low permeability reservoir.