永久封隔器在高温高压井测试中应用

Application of Permanent Packer in the Ht-hp Well Test

在高温高压井测试作业中,使用常规的RTTS及XHP封隔器常常会存在泥浆重晶石沉淀,封隔器无法正常解封的问题。在高温高压井中采用电缆下入永久封隔器,测试管柱上使用插入密封密封环空,可以满足正常测试,同时解决了以上难题,更具有安全性、可靠性、实用性的特点。DF13-1-4井及DF13-2-1井位于莺歌海盆地中央底辟构造带,是南海西部典型的高温高压井,强度校核显示RTTS封隔器安全系数不足,为了保证测试结束后能顺利解封封隔器,采用永久式封隔器替代常规RTTS并成功完成作。

In the HT-HP well test work, RTTS and XHP packer would produce mud barite precipitation, Came packer can not be normal releasing problems. Using cable set permanent packer In the HT-HP well, use the insert seal to seal the annular space in testing string, Can meet the normal test. At the same time to solve the above problems, more security, reliability and practicality of the characteristics. DF13-1-4 well and DF13-2-1 well are located in the central diapirs of yinggehai basin, belong to typical high temperature and high pressure Wells in western south China sea, intensity showed the RTTS packer safety coefficient, in order to ensure that aRer the test can successfully unlock packer, USES the permanent type alternative conventional RTTS packer and successful completion of the work.