The widely used conventional dual laterolog tools have their disadvantages of poor vertical resolution and too long electrode sonde which is not convenient for combination logging.

• 介绍了高分辨率双侧向的电极系结构、工作原理,并通过数值模拟结果阐述了它的分层能力、探测深度和围岩、侵入及井眼等影响。