North China Engineering Investingation Institute Co. Ltd. School of Resources and Geosciences, China University
of Mining and Technology Research Institute of China National Offshore Oil Corporation

为了研究西湖凹陷花港组煤层发育特征,探讨煤层发育主要控制因素,运用研究区测井、录井数据统计分析及沉积学图件分析等方法,研究煤层形成环境及发育特征,结果表明:西湖凹陷花港组煤层具有分布广泛,厚度变化大,煤层沿盆地延伸方向上对称分布,煤层分布不均匀,南北分带明显的特点。西湖凹陷花港组沉积时期,西湖凹陷处于坳陷期,发育河流相-三角洲相-湖泊相沉积环境,易于成煤。煤层分布特点受基底特征及沉积环境控制影响,同时指出沉积环境为煤层发育的主控因素。

In order to study development features of the seams in Huagang Formation of Xihu Depression, the paper discussed the major control factors of the sea ms development. The statistic analysis method of the well logging and recording data in the study zone, the sedimentology graphic and map analysis and other method were applied to study the formation environment and development features of the seams. The results showed that the distribution of the seams in Huagang Formation W as wide and the thickness variation was high. Along the expansion direction of the basin, the seams were symmetrical distributed, the distributions of the seams were n onuniform and the features of the north and south zones were obvious. During the sedimentary period of the Huangang Formation, Xihu Depression was in the depressi on period and the development of the fluvial facies- delta facies- lacustrine facies sedimentary environment would be favorable to the coal formation. The seam distribut ion features were affected by the basic floor features and the sedimentary environment control and the paper pointed out that the sedimentary environment was the mai n factors of the seam development.

国家科技重大专项资助项目(2011ZX05023-001-008)；