一种新型一次关井测试阀的研制
Development of a novel one-time shut-in test valve
毛军1
作者信息
- 1. 中石化石油工程技术研究院有限公司 北京 102206
- 折叠
摘要
针对国内超深、高温、高压油气井逐步形成的"五阀一封"等地层测试工艺,在使用中存在承下压不足导致测试数据采集不合格潜在风险.通过分析RDS结构的风险引发原因,设计球阀辅助密封机构,将原有的机械动力传送改为活塞液压动力传送,设计机械自锁式辅助结构解决活塞上行问题,设计并研制了一种全新的可作为测试主阀使用的一次关井测试阀.该工具完成了室内试验,采用国产球阀,保证工具耐温、耐压满足 204℃,105 MPa,球阀承下压能力由原来 35 MPa 提高至105 MPa.该工具可替代RDS阀使用,球阀承压不受进口球阀限制,降低了工具成本.通过配套其它测试工具,规避现有测试工艺技术潜在风险,为超深井测试提供技术保障.
Abstract
Application of the processes such as"five valves+one packer"formation testing that have been gradually developed in China for ultra-deep,high-temperature,and high-pressure wells is possibly risky for substandard test data collection due to insufficient downward pressure bearing capacity.By analyzing the risk factors associated with the RDS structure,a ball valve assisted sealing structure was designed.The original mechanical power transmission was replaced with hydraulic piston power transmission.Additionally,a mechanical self-locking auxiliary structure was developed to address the upward movement of the piston.Consequently,a novel one-time shut-in test valve,capable of serving as the main test valve,was designed and developed.Laboratory tests demonstrate that this tool,using domestically produced ball valves,could withstand temperatures and pressures up to 204℃and 105 MPa.The downward pressure bearing capacity of the ball valve was increased from 35 MPa to 105 MPa.This tool can replace the RDS valve,as the ball valve's downward pressure bearing capability is not limited by imported ball valves,thereby reducing tool costs.By integrating with other testing tools,it mitigates the potential risks of current testing techniques,which provides technical assurance for ultra-deep well testing.
关键词
地层测试/五阀一封/高温高压/APR/RDS阀/测试主阀/活塞/破裂盘Key words
formation testing/five valves+one packer/high temperature and high pressure/APR/RDS valve/main test valve/piston/rupture disk引用本文复制引用
基金项目
中国石化科技部攻关项目(PE19004-4)
出版年
2024
NETL
NSTL
万方数据