川东北140 MPa超高压井控装备检测系统研制与应用

Research of Detecting System for 140 MPa Ultrahigh Pressure Well Control Equipment in Northeast of Sichuan

川东北地区具有地层压力高、含硫高、地层复杂等特点,需要使用高压井控设备,但该地区不但没有相应压力等级的检测装置,而且不能进行气体密封检测,存在安全隐患,为此研制了140 MPa超高压井控装备检测系统。在介绍该检测系统的组成、工作原理、技术参数的基础上,重点分析了测试软件、气体密封、液体密封等关键技术,并对气体密封试压部分的设计参数进行了核算,结果表明,气体密封试压部分的设计参数合理、准确。现场应用表明,该检测系统能够检测140 MPa压力范围内的井控设备,检测结果准确可靠,操作简便,工作效率高,现场适用性强,能够满足川东北地区井控装备检测压力等级高、工作量大的要求。

High pressure well control equipments are used in the Northeast of Sichuan due to the high pressure, high sulfur and complicated formations. While the detection device for ultrahigh pressure well control equipments and gas seal detection are not available. Therefore a 140 MPa pressure detecting system is developed. Based on the introduction of the system composition, working principle, technical parameters, this paper analyses the key techniques such as testing software, gas seal system, liquid seal system, and the design parameters of the gas pressure seal testing were verified. The results showed that design parameters of gas pressure seal testing are reasonable and accurate. Field applications showed that the detection device can test well control equipments within the 140 MPa pressure range accurately. It is simple,high efficient and good on-site applicability which can meet the requirements of well control equipment in the Northeast of Sichuan.