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天然气水合物是一种潜在的巨大新型能源,目前成为科学家们关注的焦点,并积极开展这方面的研究工作.天然气水合物可通过地质沉积物取样、钻探取样和深潜考察等方法来直接识别,也可通过似海底反射层(BSR)、速度和振幅异常结构、地球化学异象、多波速探测和海底电视摄像等间接手段来识别.由于深海钻探十分昂贵并且有限,地震方法是大面积识别海洋天然气水合物的可靠手段.厄瓜多尔西海岸盆地是在板块作用下形成的沿海岸线状排列的弧前盆地,蕴含着丰富的石油和天然气资源,但整个地区勘探程度相对较低.通过在该地区开展地震地质综合研究,发现厄瓜多尔西海岸地区海上地震剖面上存在明显的BSR特征,本文采用平行海底反射、空白地震反射带、极性反转、AVO分析等方法和手段对该地区的天然气水合物进行识别,首次在厄瓜多尔西海岸地区确定了天然气水合物的分布范围及面积;同时通过成藏条件分析,采用Gornitz容积法公式计算出了该地区天然气水合物的资源量,揭示了其平面展布规律;因其巨大的资源量,表明了该地区广阔的勘探前景.
Gas hydrate is a potentially huge new energy source, which is currently the focus of attention of scientists and actively carry out research in this area.Gas hydrate can be directly identified by geological sediment sampling, drilling sampling and deep dive inspection , But also through indirect means such as seafloor reflector (BSR), anomalous structures of velocity and amplitude, geochemical anomalies, multi-wave speed exploration, and submarine television camera etc. Because deep sea drilling is expensive and limited, seismic methods are large area identifications A reliable means of marine gas hydrates.The Ecuadorian West Coast Basin is a pre-arcuate basin along the coast formed by the plate, rich in oil and gas resources, but the exploration of the entire area is relatively low.Through the region A comprehensive seismic and geological study was carried out to find that there are obvious BSR features on the offshore seismic section in the west coast of Ecuador. In this paper, the gas hydrate in the area is characterized by parallel submarine reflection, blank seismic reflection zone, polarity inversion and AVO analysis Recognition, for the first time in the west coast of Ecuador identified the day Gas hydrate distribution area and area; at the same time through the reservoir forming conditions, using Gornitz volumetric formula to calculate the amount of natural gas hydrate resources in the region, revealing the plane distribution law; because of its huge amount of resources, showed that The vast prospect of exploration in the area.