摘要
为保证超高温井地层测试时密封圈及胶筒的密封效果,对全氟密封件进行研究,对胶筒结构进行改进,研制出全氟醚橡胶密封圈、端部防突全氟橡胶胶筒。将钻杆扣的端面密封改为盖斯扣的全氟醚橡胶件密封,加强了测试管柱中各工具之间连接部位的密封性能;改变球阀系统中上球座的密封位置,增强工具内部密封组件性能,使测试管柱密封系统更适应超高温地层。经华北油田杨税务潜山6井次负压测试阀联作工艺及2井次油管传输射孔工艺应用,均顺利施工取得完整地层资料,应用效果良好。改进后的测试管柱拓展了地层测试技术的应用范围,为超高温油气井的勘探开发提供了技术支撑。
To ensure the sealing effect of sealing ring and rubber cylinder in formation testing process of ultra-high temperature well,perfluoroether rubber sealing ring and end anti bulge perfluoroethylene rubber cylinder are developed in this paper by analyzing the perfluorinated sealing parts and improving the structure of the rubber cylinder.The end face sealing of the drill pipe buckle is changed into the perfluoroether rubber sealing of the gus buckle,which strengthens the sealing performance of the connecting parts between the tools in the test string.Then,change the sealing position of the upper ball socket in the ball valve system to enhance the performance of the internal sealing components of the tool,and make the test string sealing system more suitable for ultra-high temperature formation.After the application of negative pressure test valve combination technology in 6 well-times and tubing transmission perforation technology in 2 well-times in Yangshui buried hill of Huabei Oilfield,the construction process is successful obtained the complete formation data and showed the great application effect.The improved test string expands the application scope of formation testing technology and provides technical support for the exploration and development of ultra-high temperature oil and gas wells.
作者
范俊强
周亮
周元杰
侯卫宁
李一民
吴海欧
FAN Junqiang;ZHOU Liang;ZHOU Yuanjie;HOU Weining;LI Yimin;WU Hai′ou(Well Testing Branch,CNPC Bohai Drilling Engineering Co.,Ltd.,Langfang,Hebei 065007,China;Tarim Branch,CNPC Well Logging Co.,Ltd.,Korla,Xinjiang 841000,China)
出处
《油气井测试》
2021年第6期16-21,共6页
Well Testing
基金
中国石油集团渤海钻探工程有限公司科技研发项目“智能地层测试系统研制”(2019ZD04K)。
关键词
超高温井
地层测试
密封系统
封隔器胶筒
全氟醚橡胶密封圈
盖斯扣密封
球阀
ultra-high temperature well
formation test
sealing system
packer rubber cylinder
perfluoroether rubber sealing ring
Gus buckle seal
ball valve
