金融界2025年5月24日消息,国家知识产权局信息显示,中国石油天然气股份有限公司申请一项名为“一种控制井下关井射测联作管柱及其方法”的专利,公开号CN120026874A,申请日期为2023年11月。专利摘要显示,本申请涉及一种控制井下关井射测联作管柱及其方法,包括有竖直设置的油管,所述油管的外侧同轴套设有套管,所述油管的下部设置有点火组件,所述点火组件的上方设置有测试组件,所述油管上固定连接有...
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