地震技术在崖城13-1气田开发中的应用

【摘要】 崖城13-1气田是中国海域内最早发现的千亿立方米级大气田,现已进入开发中后期,自20世纪80年代以来,针对该气田做过多轮地震资料的采集、处理和解释工作,并且引进了很多先进的技术和研究方法,比如三维油藏描述技术、时移地震技术等。随着地震采集处理解释技术的不断发展进步,对该气田构造、储层的认识也不断深入和完善。为此,首先回顾了该气田几轮有代表性的地震采集、处理工作和相应的解释成果,展示了对该气田认识的逐步深入和相应的构造变迁过程;其次详细阐述了该气田在国内首次应用的三维油藏描述技术,这为当时精确地计算气田储量奠定了基础;最后,通过多个方面的研究证实了气田的Ⅳ类AVO特征,为该气田开发挖潜及其周围目标的勘探评价提供了依据,降低了钻探风险。更多还原

【Abstract】 The Yacheng 13-1 is the first discovered large offshore gas field with the proved reserves over 100 bcm in China and is nowin its mid late stage of field development. Since 1980’s, several rounds of seismic acquisition, processing and interpretation have beenperformed in this gas field. Many advanced techniques and methodologies have been introduced from abroad, such as 3D reservoir de-scription and time-lapse seismic technology. Based on an overview of the representative achievements in seismic acquisition, process-ing and interpretation, this paper first summarizes our progressively developed understanding of the geological structure evolutionand gas reservoirs in this gas field. Then, it introduces in detail the 3D reservoir description technology which was applied for the first time in a domestic gas field and provides a basis for the accurate calculation of gas reserves at that time. Finally, it verifies theAVO features of Ⅳ-type of this gas field through a thorough study, providing strong technical support for engineers to perform theproduction potential tapping of this field and the appraisal of targets in its surrounding areas, and thereby to lower the drilling risks.更多还原