通过综合分析录井、测井及地震资料证明识别川东南北部xlA井生物礁。xlA井生物礁岩性为白云质灰岩及石灰岩,顶部为弱波谷响应,底部为弱振幅波峰响应。生物礁体在地震剖面的形态为底平顶凸的丘状,为“低频、弱振幅、空白或杂乱反射”。测井响应特征表现为礁盖为低伽马、中高电阻;礁核为低伽马、极高电阻。确定生物礁的存在对于研究川东南北部地区储层展布具有实际的指导意义。 Through the comprehensive analysis of logging, logging and seismic data to identify xlA reefs in the southeastern part of southeastern Sichuan. The reef lithology of xlA well is dolomitic limestone and limestone, the top is weak trough response, and the bottom is weak amplitude peak response. The shape of the reef body in the seismic section is a flat-topped mound with “low frequency, weak amplitude, blank or messy reflections.” Log response characteristics of the reef cover for low gamma, medium and high resistance; reef nuclear low gamma, high resistance. Determine the existence of reefs for the study of reservoir distribution in northern southeastern Sichuan has practical significance.