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南海北部陆坡神狐海域烃源岩生烃潜力巨大且烃类运移条件良好，可为水合物成藏提供充足的气源和通畅的疏导通道，而且神狐海域海底沉积层的温度、压力条件满足水合物形成的要求，具备了水合物聚集成藏的地质条件，成为我国水合物勘探开发的重点靶区。为了明确神狐地区水合物的成藏特征和主控因素，首次将随钻成像测井引入对水合物赋存状态、成藏序列、成藏模式和主控因素的研究中，从而为今后水合物的开采和钻井方案的设计提供强有力的理论依据。通过随钻成像测井、电阻率频谱及相对饱和度分析发现神狐海域共发育厚层状、分散状、斑块状、断层附近和薄层状5种赋存状态的水合物，其中厚层状和分散状水合物相对饱和度高且厚度大，开采价值较大，是研究区的主力水合物层，厚层状水合物常分布于水合物层顶部而分散状水合物常分布于水合物层底部；斑块状、断层附近和薄层状水合物相对饱和度较低且分布不规律，开采价值较小。厚层状、分散状、斑块状和断层附近水合物主要为深部热解气通过断层运移至水合物稳定区聚集成藏，为构造渗漏型水合物；薄层状水合物主要为浅部生物气横向运移聚集至水合物稳定域，为地层扩散型水合物。神狐海域发育开启型、填充型和界面型3种类型的断层，断层作为气体和流体的运移通道，沟通了气源和水合物稳定带，控制了水合物在纵向上和横向上的展布范围，为神狐地区水合物的主控因素。
Hydrocarbon source rocks in Shenhu sea area on the northern slope of the South China Sea have great potential for hydrocarbon generation and good hydrocarbon migration, which can provide sufficient gas source and smooth channel for hydrate accumulation. Moreover, the temperature and pressure conditions of the seafloor sedimentary layer in Shenhu Sea satisfy Hydrate formation requirements, with the hydrate accumulation and accumulation of geological conditions, as China’s hydrate exploration and development of key target area. In order to clarify the reservoir forming characteristics and main controlling factors of the hydrates in Shenhu area, we first introduced the logging-while-drilling imaging logging into the study of the occurrence status of hydrates, the sequence of reservoir formation, the mode of reservoir formation and the controlling factors, Material mining and drilling program design provides a strong theoretical basis. Through logging-while-drilling imaging, resistivity spectrum and relative saturation analysis, it is found that there are five kinds of hydrate in thick, scattered, patchy, fault-like and thinly stratified states in Shenhu area, The relatively high saturation and thickness of the shaped and dispersed hydrates are the major hydrate layers in the study area, and the thick layered hydrates are usually distributed at the top of the hydrate layer while the dispersed hydrates are often distributed in the hydrates The bottom of the layer; the patchy, near the fault and the thin layer hydrate relative saturation is low and the distribution is not regular, the exploitation value is smaller. The hydrates in the thick layer, the dispersed form, the plaque and the faults are mainly composed of the deep pyrolysis gas migrating to the hydrate stability zone through faults and accumulating into reservoirs to form leakage hydrates. The thin layer hydrates are mainly shallow Department of biogas lateral migration and accumulation to the hydrate stability zone, for the formation of diffusion-type hydrate. Shenhu waters develop open, filled and interfacial faults of three types. Faults serve as migration channels for gases and fluids and communicate gas source and hydrate stability zones, controlling hydrate development both longitudinally and horizontally Cloth range, as the main controlling factor of hydrate in Shenhu area.