关键词: 太古宇, 变质岩潜山, 储层特征, 控制因素, 发育模式, 渤海海域, 锦州南油田

Abstract: Aiming at clarifying the strongly heterogeneous Archean metamorphic rock buried hill reservoir in    Jinzhou   south,   the main controlling factors of the buried hill reservoirs are studied, and the development model of the buried hill reservoir in this area was established. Based on the data of drilling, coring, thin section, logging, and seismic, the characteristics of metamorphic buried hill reservoir are defined, the key factors controlling the reservoir development are discussed and the reservoir development model is established. The results show that: 1) Plagioclase gneiss, monzonite gneiss, cataclastic rock and diabase are developed in the study area, among which gneiss and cataclastic rock are the main lithology for reservoir development; Tectonic fractures, fractured intergranular pores and dissolution pores constitute a variety of reservoir spaces, among them tectonic fractures are the dominant. 2) Tectonic movement, lithology and weathering have an important control action on the high quality reservoirs distribution: reservoirs development degree of granite gneiss with high brittleness mineral content is superior to the basic intrusion; the reservoir thickness is large in the multi-stage fault superposition position; high position of the Paleo-geomorphology suffered strong weathering to further enhance the quality of the reservoir. Based on the above analysis, a reservoir development model considering tectonic position was established. Stably distributed reservoirs are developed in the platform area, thicker reservoirs are developed in the high slope area, the reservoir thickness changes fastest in the uplift area, the reservoir development in the low slope is relatively thinner, and the reservoir development in the depression area is the worst.

Key words:  , Archean； metamorphic buried-hill；reservoir characteristics；control factor；development model；Bohai Sea；Jinzhou south oilfield