摘要
随着水平井钻井技术的快速发展,水平井分段储层改造技术及配套工艺也越来越普及。作为分段储层改造工具管串中用来沟通储层与井筒的一个部件,可开关滑套通常用来实现储层改造及在整个井的生产周期内的油、气、水管理。由于滑套主要位于水平井段中,以及滑套开关所需力较大,通常采用连续油管带开关工具进行滑套开关操作;目前通过地面负载变化来判断井下滑套开关操作是否成功存在很大的不确定性和误操作的可能;同时,这种方法无法判断滑套动作位置,如滑套操作没有完全到位,则只能再次下入连续油管操作。基于此,介绍了一种新的滑套开关工具,通过连续油管带光纤设备连接井下测量工具串,能够精确定位滑套位置并实时监测井下负载、压力、温度等参数,通过在地面对测量数据进行处理、解释,可准确判断井下情况,实现滑套的可靠开关操作;并通过CCL曲线变化确定滑套是否操作到位,节约因操作失误导致的大量后期作业时间和成本。
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.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第1期157-162,共6页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
滑套
开关工具
连续油管带光纤
实时监测
井下定位
sliding sleeve
shifting tool
CT with fiber
real-time monitoring
bottomhole locating
