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珠江口盆地白云凹陷北坡—番禺低隆起地区受多期构造叠加影响,具有长期生烃、多源供烃的烃源特征,发育包括断裂体系、输导砂体、构造脊、不整合面等在内的油气输导体系。研究区油气主要输导层位为T60(23.8Ma)-T50(18.5Ma)和T40(16.5Ma)-T35(13.8Ma),其中T60-T50广泛发育连片的古珠江三角洲—滨岸沉积砂体及其上覆的巨厚泥岩,为油气的横向输导及长距离运移提供了必要条件,而T40-T35发育的三角洲、斜坡扇与低位进积复合体是研究区有利的油气储集体和侧向输导体。广泛发育的第三系同沉积反向断层是研究区油气运移的纵向输导体系。断层、砂体、构造脊及不整合面等输导体系相互匹配,形成了“构造脊”背景下的“网络式”复合输导体系。
The Pearl River Mouth Basin Baiyun Sag north slope - Panyu low uplift affected by the superimposition of multi-stage structure, with long-term hydrocarbon generation, multi-source hydrocarbon source characteristics of the development, including the development of fracture systems, sand bodies, structural ridges, unconformities, etc. Oil and gas transportation system. The main oil and gas bearing layers in the study area are T60 (23.8Ma) -T50 (18.5Ma) and T40 (16.5Ma) -T35 (13.8Ma), of which the contiguous ancient Pearl River Delta-coastal sediment sand And its overlying thick mudstone provide the necessary conditions for the lateral transport and long-distance migration of oil and gas. The delta, slope fan and low-level accretion complex developed by T40-T35 are the favorable oil and gas reservoirs in the study area And lateral conductors. The extensively developed Tertiary syn-sedimentary reverse fault is a longitudinal transport system for hydrocarbon migration in the study area. Faults, sand bodies, structural ridges and unconformities are matched with each other to form a “network ” composite transmission system under the “structural ridge ” background.