泰国湾盆地柬埔寨海域D 区块属低勘探新区，邻区的石油地质综合研究较为深入，认识比较成熟，但是研究区内尚缺乏系统的层序地层划分方案。此次研究以二维地震资料为基础，结合边缘的一口钻井资料，分别进行了单井层序划分和地震层序划分，得到综合层序划分方案，最终划分出6 套沉积层序，建立起了该区首套等时的层序地层格架。之后，以层序为单元，分析了地震相的剖面特征和平面展布。文中所用方法为海上低勘探地区的层序地层学研究提供了一条有效途径。

The block D of Cambodia Sea in Gulf of Thailand is a newarea with low exploration degree. The petroleum geology study on the nearing area is much deeper. However, there has no systematic sequence division in the block Dby now. The 2D seismic lines played a main part together with the assist of the nearingwell. The sequence divisions inwell and seismic sections are carried out individually. Combined with the two divisions, the comprehensive sequence division of the area is obtained. There are totally 6 sequences, and the first isochronal sequence framework is set up. In the unit of sequence, the section feature and plane feature of the seismic facies are analyzed. The method used here offers an effective way for the study of sequence stratigraphy on offshore low-degree exploration areas.