海底及浅层地质灾害的高分辨率地震预测技术

High-resolution Seismic Prediction Technology of Seafloor and Shallow Geohazards

为降低海上钻井及施工风险,利用渤海及西非某区块最新采集的高分辨率地震资料,结合研究区区域地质背景及邻井钻探数据,对浅海及深水钻井面临的各类地质风险因素进行了研究。利用地震相分析、波阻抗反演、井(孔)震标定、属性分析等中深部油气勘探的成熟技术,分析了各类海底及浅层地质灾害因素的成因、特征、危害及展布规律,总结了一套利用高分辨率地震资料预测海底及浅层地质灾害的技术方法。经钻井证实,利用高分辨率地震资料对地质灾害进行预测,可以有效地防范各类钻井风险,并可为今后海上油田施工提供可靠的工程地质调查成果。

In order to reduce the risks of offshore drilling and construction,the study on all factors of geological hazard,faced by shallow water and deep water drilling uses the latest high-resolution seismic data of the Bohai sea and a block in West Africa,combined with the background of regional geology and the data of offset well drilling data.Some mature technologies for hydrocarbon exploration in mid-deep strata,such as the analysis of seismic facies,wave impedance inversion,well（hole）seismic calibration,attribute analysis and so on,have been used to analyze the causes,characteristics,hazards and distribution rules of various seafloor and shallow geological hazards and have been used to summarize a set of technical methods to predict seafloor and shallow geohazards by using high-resolution seismic data.The practice of well drilling verifies that the prediction of geohazards by using high resolution seismic technology can prevent effectively all kinds of drilling risks and can providereliable results of engineering geological survey for future construction in offshore oil field.