摘要：基于油田不压井作业车的运动和安全可靠性的要求,设计了不压井作业车的液压控制系统和液压缸,实现了不压井作业车的各项动作要求,解决了单独使用不压井装置修井效率低而单独使用常规修井车无法实现不压井作业的问题,提高了不压井作业的效率。

摘要：由于不压井作业优于常规压井作业,依据我国油井的具体情况,对短冲程不压井作业装置的举升液控系统进行了设计,并借助于AMESim软件对举升液压控制系统进行了计算机仿真,分析了举升液压缸的同步性。

摘要：在不压井作业中,油管的振动及井内压力波动会导致油管堵塞器解封,存在安全隐患。设计了双滑块和双密封胶筒结构的油管堵塞器,介绍了结构和工作原理。利用ANSYS软件中的插件建立了Yeoh本构模型,对该堵塞器密封胶筒进行接触应力分析,分析结果满足要求。

摘要：The electrochemical reduction of CO_(2)holds considerable promise in combating global climate change while yielding valuable chemical *** electrode assemblies operating within acidic electrolyte have exhibited noteworthy advancements in CO_(2)utilization efficiency,albeit encountering formidable competition from the hydrogen evolution *** our investigation,we introduced a silicate buffer layer,which yielded exceptional outcomes even using strong acid ***,our approach yielded a CO Faradic efficiency of 90%and reached a substantial current density of 400 mA cm^(-2).Furthermore,our system displayed remarkable stability over a 12-hour duration,and achieved a high single-pass-conversion efficiency of 67%.Leveraging in-situ Raman analysis,we attributed these performance enhancements to the augmented CO_(2)adsorption and localized alkaline environment facilitated by the incorporation of the silicate buffer *** think the addition of buffer layer to adjust the microenvironment is essential to achieve high performance and keep stable in acid condition.