CAJ | 학술논문

在对歧口凹陷古地貌、构造演化、沉积体系等地质条件调查研究的基础上,运用沉积模拟技术,再现了沙一下重力流的形成及演化过程,分析了重力流的搬运沉积特征与影响因素。实验表明,来水特征、湖水位、初始流速、沉积物浓度与泥砂含量、湖区底形、流态等对重力流沉积砂体形成及演化具有显著的影响。通过实际砂体与实验砂体厚度分布对比,滨海4以南、港深78、滨海28以北地区为上倾尖灭砂体有利储层分布区。
재대기구요함고지모、구조연화、침적체계등지질조건조사연구적기출상,운용침적모의기술,재현료사일하중력류적형성급연화과정,분석료중력류적반운침적특정여영향인소。실험표명,래수특정、호수위、초시류속、침적물농도여니사함량、호구저형、류태등대중력류침적사체형성급연화구유현저적영향。통과실제사체여실험사체후도분포대비,빈해4이남、항심78、빈해28이북지구위상경첨멸사체유리저층분포구。
Based on studying the paleogeomorphological features,tectonic evolution,depositional system of Qikou Sag,the formation and evolution of the sand bodies of gravity flow origin are reconstructed by using the technology of simulation experiment.The transportation and sedimentary characteristics and the influencing factors of gravity flow are also analyzed.The experiment results show that the inflow characteristics,lake level,initial flow velocity,sediment concentration and sediment content,lake bottom shape,flow patterns and so on have obvious influence for the formation and evolution of the sand bodies of gravity flow origin.By comparing the actual thickness and experimental thickness of the sand body,the region of the south of Binhai4 and the north of Gangshen78 and Binhai28 is the favourable region for reservoir development.