随钻方位自然伽马成像测井在地质导向中的应用

Application of Azimuth Gamma Imaging Logging While Drilling to Geosteering

地质导向根据钻井过程中实时测量的地质和工程参数指导钻头钻进方向,使钻头尽可能在产层内钻进。随钻方位自然伽马成像测井仪器利用多个自然伽马传感器,将带有方位信息的测量数据实时上传到地面用于地质导向。利用地质导向建模软件,分析仪器在钻遇倾斜地层、断层、不同倾斜角地层时仪器响应特征,为实时地质导向提供理论依据。现场利用实时随钻方位自然伽马成像测井资料对水平井钻探进行实时追踪,及时判断钻遇地层的边界位置并调整井眼轨迹,结合其他资料指导水平井施工,较好地实现了地质导向目的。

Due to the geosteering which based on the real-time measurement of geological and engineering parameters in the drilling process guides the drilling direction,so the drill bit may drill in the production layer as much as possible.Azimuth gamma ray imaging logging while drilling technology is measured with several gamma sensors,in which azimuth measurement data can be uploaded to the ground in real time for geosteering.The modeling software of geosteering is used to analyze response characteristics of azimuth gamma imaging tool in different formations,such as dip formation and fault formation while drilling.In field application,it can guide the construction of horizontal well and better achieve the purpose of geosteering through real-time analysis of gamma imaging data and other information.