CAJ | 학술논문

随钻自然伽马测井在随钻测井中占有重要地位,它能用于划分储层以及评价水平井储层钻遇率.随钻自然伽马测井主要受井眼大小、泥浆性能等影响,针对随钻自然伽马测井所面临的各种不同环境影响因素,对相应的校正图版进行离散采样读值,采用回归分析法拟合读值点数据得出校正公式,并编写出相应的校正程序,以标准化公式(模型)代替校正图版,实现随钻自然伽马测井资料的环境影响自动校正,通过对实测资料的处理,得到校正后的随钻伽马测井曲线更接近校正后的电测伽马曲线.
수찬자연가마측정재수찬측정중점유중요지위,타능용우화분저층이급평개수평정저층찬우솔.수찬자연가마측정주요수정안대소、니장성능등영향,침대수찬자연가마측정소면림적각충불동배경영향인소,대상응적교정도판진행리산채양독치,채용회귀분석법의합독치점수거득출교정공식,병편사출상응적교정정서,이표준화공식(모형)대체교정도판,실현수찬자연가마측정자료적배경영향자동교정,통과대실측자료적처리,득도교정후적수찬가마측정곡선경접근교정후적전측가마곡선.
Gamma logging while drilling played an important role in logging while drilling. Because it can be used for reservoir classification and evaluation of drililing ratio of reservoir in horizontal wells. Gamma logging while drilling was mainly affected by such environmental factors as size of the borehole and mud property etc. According to different environmental effects, auto-correction described in this paper was first used to read out values by discrete sampling from corresponding correction charts. Regression analysis was used to fit the reading point data so ,as to find out the correction formula (models) and write a corresponding correction program. A standard formula (model) is used to repl:ace the correction chartboard for automatic environment correction of logging data while drilling gamma well logging. The results are close to the corrected wire line gamma data from logging while drilling.