The Lower Congo Basin is a typical passive continental margin basin of West Africa and is currently the focus and hot spot of deep-sea oil and gas exploration. Previous studies have focused on the deformation process and mechanism of the salt rock itself, but have ignored the interaction process between the faults and salt diapirs. The direct influence of the interaction process between the faults and salt diapirs on oil and gas exploration is reflected in the control of the reservoir distribution. In recent years, most of the oil and gas discovered in the Lower Congo Basin have been concentrated in the Oligocene–Miocene turbidite reservoirs, and the distribution of channel sand bodies is largely affected by supra-salt tectonic activity. In this study, Block M in the Lower Congo Basin was selected for study. Based on the 3D seismic, drilling, and logging data, the typical structural styles and stress mechanisms were analysed. The 2D Move software was used to restore the tectonic evolution history and, based on this, established the interaction model of salt diapirs and faults, and summarized the action modes of diverse types of sedimentary channels. The research results are expected to lay the foundation for follow-up studies on the laws of hydrocarbon accumulation.

中文翻译：

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下刚果盆地（刚果、西非）M区块晚白垩世—中新世盐上构造及其对河道发育的控制

下刚果盆地是西非典型的被动大陆边缘盆地，是目前深海油气勘探的重点和热点。以往的研究主要集中在盐岩本身的变形过程和机理上，而忽略了断层与盐底辟的相互作用过程。断裂与盐底辟的相互作用过程对油气勘探的直接影响体现在储层分布的控制上。近年来，下刚果盆地发现的油气大部分集中在渐新统—中新统浊积岩储层中，河道砂体分布主要受盐上构造活动的影响。本研究选择下刚果盆地M区块进行研究。基于 3D 地震、钻井、结合测井资料，分析了典型的构造样式和应力机制。利用2D Move软件还原构造演化历史，并在此基础上建立盐底辟与断层相互作用模型，总结不同类型沉积水道的作用方式。研究成果有望为后续油气成藏规律研究奠定基础。