Effective production-logging(PL)techniques are available for low-rate horizontal gas wells.Between June 2005 and September 2006,eight Sierra-field wells were evaluated with either traditional PL tools or downhole-video-logging tools.Pressure,temperature,nuclear-fluid-density,single-capacitance,capacitance-array,fullbore-spin-ner,caliper,and gamma ray data were acquired with traditional PL tools.Video logging collected wellbore images as well as pressure and temperature information.The PL data indicated liquid accumulations;however,the different logging tools showed varying degrees of detail.Video-logging data provided definitive images of gas bubbles and slugs flowing through liquid.
展开▼
