摘要
录井检测受井场环境影响较大,主要包括钻井环境与检测环境,钻井环境包括井径、钻时、钻井液排量、是否取心等,检测环境主要是井场自然环境与检测器内部环境。一般情况下检测器内部环境基本一致,而井场自然环境在一定时间内变化不大,故而钻井环境对录井检测的影响较大,钻井环境校正是进行录井解释前的重要工作。常规Tg(全烃含量)校正方法在取心、低异常、多互层等层段使用效果较差,经过分析,将校正方法在取心、钻时、排量、基值方面进行优化,实践验证,新校正方法效果较好,适应了西湖凹陷的地质研究需求。
Logging detection is greatly influenced by well site environment,which includes drilling environment and detection environment.Drilling environment includes borehole diameter,drilling time,drilling fluid displacement,coring etc,while the detection environment is mainly the natural environment of well site and the internal environment of detector.Generally,the internal environment of the detector is basically the same,and the natural environment of the well site changes little in a certain period of time.Therefore,the drilling environment leaves a greater impact on logging detection.The drilling environment correction is an important task before logging interpretation.Conventional Tg correction method is poor in efficiency in coring and for low anomaly and multi-layered intervals.After analysis,the correction method is optimized in coring,drilling time,displacement,base value and other aspects.Practice proves that the new method has better effect and better adapts to the geological research needs in the Xihu Depression.
作者
江志强
陈金龙
鲁法伟
JIANG Zhiqiang;CHEN Jinlong;LU Fawei(Shanghai Branch of CNOOC (China) Co.,Ltd.,Shanghai 200030,China;China University of Petroleum (Beijing),Beijing 102249,China)
出处
《海洋地质前沿》
CSCD
2019年第6期64-68,共5页
Marine Geology Frontiers
基金
国家油气重大专项(2016ZX05027-002)
关键词
井筒压力校正
钻井环境校正
东海盆地
西湖凹陷
borehole pressure correction
drilling environment correction
East China Sea Basin
Xihu Depression
