CAJ | 학술논문

水平井电阻率测井不仅需要考虑地层厚度、围岩,还需要考虑井眼斜度、地层电阻率各向异性等因素的影响。因此,相对直井而言,水平井电阻率测井响应的处理与解释更为复杂、困难。结合ARC675型随钻电阻率测井仪原理,通过数值模拟,总结出地层厚度、围岩及电阻率各向异性等环境因素对该仪器相位电阻率和振幅电阻率的影响规律。在此基础上,通过处理某水平井随钻电阻率测井资料发现：该方法不仅能准确确定水平井井眼轨迹与地层的关系,还能解释相位电阻率值与振幅电阻率值差别大以及二者与导眼井测井电阻率值相差较大的原因。其解释成果为下一步实施压裂改造等措施提供了理论依据。
수평정전조솔측정불부수요고필지층후도、위암,환수요고필정안사도、지층전조솔각향이성등인소적영향。인차,상대직정이언,수평정전조솔측정향응적처리여해석경위복잡、곤난。결합ARC675형수찬전조솔측정의원리,통과수치모의,총결출지층후도、위암급전조솔각향이성등배경인소대해의기상위전조솔화진폭전조솔적영향규률。재차기출상,통과처리모수평정수찬전조솔측정자료발현：해방법불부능준학학정수평정정안궤적여지층적관계,환능해석상위전조솔치여진폭전조솔치차별대이급이자여도안정측정전조솔치상차교대적원인。기해석성과위하일보실시압렬개조등조시제공료이론의거。
LWD resistivity data are mainly used in horizontal well logging interpretation. Compared to vertical well, the responses of electrical logging in horizontal well seem to be more complicated. It not only needs to consider bed thickness and shoulder bed, but also should take borehole inclination and formation resistivity anisotropy into account. Different formation models were established for numerical simulations to analyze the responses of the ARC675 resisitivity tool to the environmental factors, including bed thickness, shoulder bed and resistivity anisotropy. A field log example is used to support the calculations presented. The method is not only used to determine the geometry relationship of well trajectory and formations precisely, but also to interpret the reason why there are large differences between the responses of phase shift resistivities and attenuation resistivities which are both highly different to the resistivities of pilot well. The results of this study can be used to guide the determination of fracturing in field application.