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针对复杂钻井技术条件下随钻采集的岩屑难以真实反映地层岩性的实际,探讨了地层剖面恢复方法。一是运用常规岩屑岩性识别恢复地层剖面,包括采用“一看、二翻、三照、四滴、五闻”法识别真假岩屑,利用“岩屑体积跟踪法”解决岩屑代表性差的问题,利用“去尾法”解决岩屑后拖的问题;二是综合利用多种录井资料恢复地层剖面,包括利用色谱资料进行剖面归位,钻具振动法判断随钻地层岩物,综合运用随钻常规录井参数判别岩性;三是应用物理方法识别恢复地层剖面,包括运用数码成像技术识别恢复地层剖面,岩石物理检测法识别岩性。
Aiming at the fact that the cuttings collected by the drilling with complex drilling technology are hard to truly reflect the lithology of the formation, the recovery method of the formation profile is discussed. First, the conventional lithofacies lithology identification recovery stratigraphic profile, including the use of “a look, two turn, three photos, four drops, five smell” method to identify true and false cuttings, the use of “cuttings volume tracing method” to solve the representative of cuttings The use of a variety of logging data recovery stratigraphic profile, including the use of chromatographic data for profile homing, drill vibration method to determine the presence of rock strata , The lithology is synthetically applied by the conventional logging parameters while drilling; thirdly, the recovery stratum profile is identified by using the physical method, including the recognition of the restoration stratum profile by the digital imaging technology and the lithophysical detection method for identifying the lithology.