1.
Development of Downhole Control Valve for Entire Underbanlanced Operation
全过程欠平衡作业用井下控制阀研制
2.
subsurface controlled subsurface safety valve
井下控制井下安全阀
3.
surface controlled subsurface safety valve
地面控制井下安全阀
4.
The Research and Development of Intelligent Valve Control System of Pumping Well;
井下智能阀门控制系统的技术研究与装置开发
5.
DEVELOPMENT OF THE OUTSIDE DIAMETER OF 244.5MM MEASURABLE PRESSURE BELOW VALVE ANNULUS SAFE VALVE
可测量阀底压力的Φ244.5mm井下套管封井器研制
6.
Simulation of Hydraulic Controllable Shut off Valve Based on Dynamic Mesh Technology
井下自动排水用液压可控闸阀仿真研究
7.
pressure-gradient control valve
压差控制阀（优先阀）
8.
pressure controlled valve
压力调节阀压力控制阀
9.
Bottom-Hole Dynamic Coring Assembly Analysis Using the Finite Element Method and Deviation Control Research of Chinese Continental Scientific Drilling No.1 Well;
科钻一井井下动力取心钻具组合有限元分析与井斜控制研究
10.
Wellhead surface safety valves and underwater safety valves for offshore service
海上用井口上部安全阀和水下安全阀规范
11.
Study of Down Hole Auto-deviation Control System Based on Single-chip Microprocessor;
基于单片机井下纠斜控制系统的研究
12.
Study on Cost Dynamic Management Control of Down-hole Service Corporation
井下作业公司成本动态管理控制研究
13.
Centrolized Control System of Underground Overhead Manned Cart
煤矿井下架空人车集中控制系统设计
14.
Control of Exhaust Pollutant of Flame Proof Diesel Engine in Underground Coal Mmines
煤矿井下防爆柴油机排气污染的控制
15.
A Design of Auto-control System of Underground Pumping Station
一种井下泵房自动化控制系统的设计
16.
Study on preparation of a new type of sedimentary fracture height control agent used for underground curing
新型井下固化下沉式缝高控制剂的研制
17.
Applications of down-hole bi-directional flow valve in the absorption oil wells
井下双向流动阀在易漏失油井中的应用
18.
Control valves and valve general, the executing agency.
控制阀一般由执行机构和阀门组成。