The purpose of perforation is penetrating the casing tube, cement sheath and a certain depth of the formation and forming unhindered channels for oil and gas flowing into the well casing.
射孔目的就是射穿套管、水泥环和地层内一定的深度，为地层的油气流入至井筒，形成一个顺畅的通道。
The new system has realized the communication and control for different kinds of computers. And the production capability of seamless oil casing tube with high additional value has improved greatly.
改造后的计算机系统顺利实现异种机之间的通讯和控制，大幅度提高了高附近加值无缝石油套管的的生产能力。
Silicone rubber tube glass fiber casing, is woven E-glass fiber tube, coated with high temperature silicone rubber is made.
硅橡胶管玻璃纤维套管，是由无碱玻璃纤维编织成管后，涂以硅橡胶高温处理而成。
Adding modified silicate nanometric powders to HDPP and PVC cases as casing material for optical fiber tube can significantly improve its performance.
研究表明，改性后的硅酸盐矿物纳米-微米粉作为填料对光纤护套管（HDPP）和管（PVC）的性能有较大影响。
Thee main products are: all kinds of diamond drill bits, PDC bits, casing boots, reaming, single and double tube wireline coring drilling, coring drill pipe, casing and other drilling tools.
主要产品有：各类金刚石钻头、复合片钻头、套管靴子、扩孔器、单双管绳索取芯钻具、绳索取芯钻杆、套管及其它钻探工具。
Both the derrick deviation and the wellhead's eccentricity will cause the serious wearing of the casing (or casing protecting tube) close to the wellhead.
井架不正或井口偏心，会造成近井口套管（或套管防磨套）的磨损。
The above connecting bar springs rubber balls are all placed in metal tube casing pipes are fixed to supporting frame's two sides.
以上连杆、弹簧、皮球均放置在金属管内，套管固定在大梁两侧。
It is mainly used as an outer tube for inner control cable. Types of product include coiling outer casing, long-lay outer casing, and double-wire outer casing.
此为专业控制线之套管，品种涵盖螺旋软管、直丝软管、双丝软管。
The water shutoff technology with solid expandable tube is a new technology to shut off water by repairing and strengthening perforated casing.
可膨胀管堵水技术是一种利用膨胀管对套管补贴以实现水层封堵的新技术。
The expanded tube is thin wall casing with open mouth.
胀管为开口薄壁套管；
Daqing oil fields have been exploited for thirty eight years, the casing failure in petroleum tube is becoming more and more serious.
大庆油田注水开采三十八年来，油井和注水井套管损坏现象日趋严重。
Sewage slurry pump is single stage single suction vertical centrifugal pump, the main components are volute, impeller, pump base, pump casing, support tube, motor base, motor and other components.
浑水泥浆泵是单级单吸立式离心泵，主要螺杆泵部件有蜗壳、叶轮、泵座、泵壳、支撑筒、电机座、电动机等组成。
Sewage slurry pump is single stage single suction vertical centrifugal pump, the main components are volute, impeller, pump base, pump casing, support tube, motor base, motor and other components.
浑水泥浆泵是单级单吸立式离心泵，主要螺杆泵部件有蜗壳、叶轮、泵座、泵壳、支撑筒、电机座、电动机等组成。
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