隔离密封检测工艺及配套密封工具研究及应用

针对密封筒受到磨损、腐蚀导致自密封封隔器的胶筒密封易失效而无法分层开采的问题，开发出一套隔离密封性能检测管柱工艺。通过内置在检测管柱中的压力计和流量计，对密封筒的受损情况进行有效检测。依据现有标准《油气田压缩式封隔器胶筒》，设计不同规格新型密封工具的胶筒，来满足不同类型密封筒的要求。首先，对胶筒的尺寸参数、硬度进行了优选；然后，对检测工具的胶筒进行座封试验、耐压试验及密封性能试验，确定出不同规格的密封筒对应的密封工具的压缩距及坐封力。利用检测工艺对分层失效的井进行现场检测，利用密封胶筒对受损密封筒进行有效密封补偿。开发的检测工艺技术能够在有缺陷密封筒的油水井中对井下密封筒进行定量化检测，保证有效分层开采。

Research and Application of Isolation Seal Detection Technology and Matching Seal Tools

Aiming at the problem that the seal of the self-sealing packer is liable to be broken due to wear and corrosion of the seal cylinder and consequently the oil-gas cannot be exploited in layers,a set of isolation and seal performance test pipe string technology is developed.Through the pressure gauge and flow meter data built into the test pipe string,the damage of the sealed cylinder can be effectively detected.According to the existing standard"Oil and Gas Compression Packer Rubber Cartridge",different specifications of new types of sealing tool cylinder are designed to meet the requirements of different sealing types.First,the size parameter and the hardness of the rubber tube are prioritized.Then,the rubber tube of the testing tool is subjected to a sealing test,a pressure resistance test and a sealing performance test,therefore the compression distance and the sealing force of the sealing tool corresponding to the sealing cylinders of different specifications are determined.The inspection process is used to carry out on-site inspection of the stratified failure wells,and the sealing cylinder is used to effectively seal the damaged one.The result shows that the developed detection process technology can effectively ensure the stratified mining in the oil-water well with the defective seal cartridge.