摘要
Abstract
With the rapid development of horizontal well drilling technology,the staged reservoir stimulation technology and supporting tools of horizontal wells has become increasingly popular. As a component of the staged reservoir stimulation tool to communicating reservoir and wellbore,shiftable sliding sleeves are used to stimulate reservoir and to improve oil,gas and water management throughout the life of the well. Because of the large shifting force and extended reach required to operate sliding sleeves in horizontals,the coiled tubing(CT)is typically used for sleeve management. But there is some uncertainty to ensure sleeve shifted successfully by observing the change of surface load and there is a possibility of misuse. At the same time, this method can’t determine the sleeve position,so if the operation is not fully in place,CT operation was needed again. To solve this problem,this paper introduces a new shifting tool which is connected by CT with fiber. This tool can shifting sleeve by locating sleeve position precisely and monitoring string load,pressure and temperature in the downhole;by processing and interpreting the measurement data on the ground,the operators can judge the situation downhole accurately and switch sleeves reliably. It also can determine sleeve position by the change of CCL curve to save a lot of cost and time caused by operational errors.关键词
滑套/开关工具/连续油管带光纤/实时监测/井下定位Key words
sliding sleeve/shifting tool/CT with fiber/real-time monitoring/bottomhole locating分类
能源科技
