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在石油开采过程中,射孔器材的改进和射孔工艺的改善对提高油田采收率和稳定油田产能具有重要意义。为评价射孔器材和射孔工艺的效能,在地面上建立了一套可对较深地层环境全模拟的高温超高压模拟井射孔试验装置。通过合理选用材料及结构设计,该装置能够模拟地下三维空间受压状态,进行多发弹射孔和流动性测试试验。文中对大直径超高压容器及其内部三腔压力分隔结构、温度和压力控制系统等作了介绍,对主要受压元件设计结构进行了强度、刚度的有限元分析计算。试验结果表明:该装置能够较好地模拟井下作业环境,为射孔效能评估分析研究提供了可靠的试验手段。
In the process of oil exploration, improvement of perforation equipment and improvement of perforation process are of great significance for improving oil recovery and stabilizing oilfield productivity. In order to evaluate the performance of perforating equipment and perforation process, a set of high temperature and high pressure simulated well perforation test equipment that can simulate the deeper formation environment is established on the ground. Through the rational selection of materials and structural design, the device can simulate the underground three-dimensional space under pressure, for multiple ejection holes and fluidity test. In this paper, the large-diameter ultra-high pressure vessel and its internal three-cavity pressure separation structure, temperature and pressure control system were introduced. The strength and stiffness of the main compression element design structure were calculated by finite element analysis. The experimental results show that the device can simulate the working environment well and provide a reliable test method for the evaluation of perforation efficiency.