摘要
高密度泥浆环境中下入APR测试管柱使用OMNI阀诱喷作业时,泥浆沉淀易导致封隔器埋卡,操作不当易导致OMNI阀失效。在理论研究和现场多次实践应用的基础上,采用合理控制封隔器坐封到替液之间的时间间隔,防止高密度压井液沉淀埋卡封隔器;优化替液及OMNI阀操作方案,避免OMNI阀在操作过程中被高密度压井液中固体颗粒冲蚀损坏。海外某气田具备“三高”气田特征,应用该技术十余井次,包含两井次中途测试作业,施工过程中OMNI阀工作正常,管柱密封可靠,封隔器未出现埋卡的情况,录取资料合格,作业一次成功率100%。该技术针对“三高”气井APR测试作业先射孔后下入测试管柱及中途测试的工艺要求,实现了替液诱喷的需求,确保了测试作业的井控安全和工程质量,为后续的测试作业提供了技术支持。
When the OMNI valve is for bullheading operations with the APR testing string in the high-density mud environment,mud deposition can easily cause packer sticking,and improper operation can lead to OMNI valve failure.Based on theoretical research and multiple field applications,the time interval between packer setting and bullheading with displacement fluid was controlled in a reasonable manner to prevent packer sticking caused by mud deposition in high-density drilling fluid.Furthermore,the displacement fluid and OMNI valve operation scheme were optimized to avoid erosion and damage to the OMNI valve by solid particles in the high-density drilling fluid.This technique has been applied in over 10 wells,including two mid-job testing operations,in an overseas gas field with“three highs”characteristics.During the implementation process,the OMNI valve operated normally,and the string sealing was reliable without any packer sticking incidents.The recorded data met the qualification criteria,and the success rate of the operations was 100%.This technique meets the technical requirements of APR testing operations for“three highs”gas wells,such as perforation followed by running the testing string and mid-job testing.This technique satisfies the requirements for bullheading with displacement fluid,ensuring well control safety and engineering quality in testing operations and providingtechnical support for subsequent testing operations.
作者
汤火林
张天翊
黄刚
苏超
顾国刚
TANG Huolin;ZHANG Tianyi;HUANG Gang;SU Chao;GU Guogang(Well Testing Company,CNPC Greatwall Drilling Engineering Co.,Ltd.,Beijng 100101,China;Petroleum Engineering College of China University of Petroleum(Beijing),Beijng 102200,China)
出处
《油气井测试》
2023年第3期17-21,共5页
Well Testing
关键词
APR测试管柱
OMNI阀
高密度压井液
埋卡
诱喷
替液
APR testing string
OMNI valve
high-density well killing fluid
packer sticking
bullheading
displacement fluid
