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PG8井导眼段解释成果显示该井目的层马五1-2段垂深2813.0-2816.0m,垂厚3.0m,实钻岩性主要为灰色含灰云岩、灰色灰云岩。录井岩性描述为:灰色,色匀,成分以白云石为主,含少量灰质成分,细粉晶结构,性硬,断口平整,较为致密。与稀盐酸反应较剧烈,加热反应剧烈,持续时间较长,反应彻底,反应液清澈。该井水平段测井显示伽马值存在较大差异,低伽马段对应为较纯的白云岩,而高伽马段可能是泥质含量增加。
The result of interpretation of the PG8 well shows that the depth of the second member of Mawu Formation in the target layer of the well is 2813.0-2816.0m and the vertical thickness is 3.0m. The actual drilling lithology is mainly gray-grained gray rock and gray-grained gray rock. Logging lithology described as: gray, uniform color, dolomite-based composition, with a small amount of gray matter composition, fine powder crystal structure, sexual hard, fracture formation, more dense. Reaction with dilute hydrochloric acid more intense, heating reaction violent, longer duration, the reaction was complete, the reaction solution was clear. Logging in the horizontal section of the well shows that there is a big difference in gamma values, that in the low gamma section corresponds to relatively pure dolomite, and that in the high gamma section may be an increase in the content of shale.