岩屑自然伽马检测技术在岩性识别和地层划分中的应用  

Natural gamma detection technology for cuttings in lithology identification and stratigraphic division

作　　者：柳晓风 

机构地区：[1]中国石油大庆钻探工程有限公司地质录井一公司

出　　处：《录井工程》2015年第3期35-39,106,共5页Mud Logging Engineering

摘　　要：自然伽马测井是一项成熟的技术,近年来录井行业就利用岩屑自然伽马检测能否获得与伽马测井类同结果的课题开展了相关研究,从录井技术文献中得知,目前岩屑自然伽马检测仪器的研制均在研发探索阶段。近两年大庆地质录井一公司开展了攻关研究与外协合作,成功研制开发了岩屑自然伽马检测仪,先期的现场试验证实仪器达到了设计要求,克服了屏蔽效果方面存在的问题,检测精度达到现场要求并初步形成了解释评价方法。岩屑自然伽马检测技术主要应用于随钻地层划分、岩性判断、进行邻井地层和层位对比,为PDC、空气钻井等特殊工艺条件下的岩性识别提供了一种新的方法和手段。Gamma ray log is a mature technology,in recent years,mud logging industry has carried out related research on whether cutting natural gamma detection can obtain the similar results with gamma log,from technical literature of mud logging,the current development of cutting natural gamma detection instruments is in the development stage of exploration.The First Daqing Geo-Logging Company carried out a research and cooperation with the outside in the past two years,successfully developed cutting natural gamma detector,early field test proved that the instrument can meet the design requirements,overcame the problem of the shielding effect,the onsite detection accuracy met field requirements and the initial interpretation and evaluation methods were formed.Cutting natural gamma detection technology is mainly used to divide the strata while drilling,lithology judgment,stratum and horizon correlation for offset wells,providing a new method and means for lithology recognition under the special technologic conditions,such as,PDC,air drilling.

关 键 词：岩屑自然伽马检测技术 岩性划分 地层划分 地层对比 应用 效果 

分 类 号：TE132.1[石油与天然气工程—油气勘探]