CAJ | 학술논문

介绍一种随钻双感应测井仪器，利用三维有限元方法模拟实际仪器结构对仪器响应的影响，针对该仪器设计刻度环和刻度水箱，并探讨最优刻度环参数和水箱刻度校正系数。结果表明：钻铤和反射层是导致仪器响应非线性变化的主要因素，磁环主要导致仪器响应幅值增大。通过刻度环或水箱刻度，仪器响应和真实地层电导率具有较宽的线性响应范围。模拟结果可为随钻双感应测井仪器设计和刻度提供理论参考。
개소일충수찬쌍감응측정의기，이용삼유유한원방법모의실제의기결구대의기향응적영향，침대해의기설계각도배화각도수상，병탐토최우각도배삼수화수상각도교정계수。결과표명：찬정화반사층시도치의기향응비선성변화적주요인소，자배주요도치의기향응폭치증대。통과각도배혹수상각도，의기향응화진실지층전도솔구유교관적선성향응범위。모의결과가위수찬쌍감응측정의기설계화각도제공이론삼고。
Instrument structure influences of a new dual-induction resistivity LWD tool were simulated using the finite ele-ment method (FEM), and optimal parameters of calibration loop and correction coefficients of the calibration tank were de-termined and discussed respectively. The results show that the nonlinear responses of the tool are mainly caused by the drill collar and the reflector, while the amplitude enhancement of signal is mainly caused by the magnetic ring. After calibration, a wide linear response range of the formation resistivity is obtained. The simulation results can provide theoretical references for the research and calibration of dual-induction resistivity LWD tools.