千米以上的深水地热井施工常会出现滤水材料或上水材料蓬堵及套管滤水管折断等事故。
In construction of deep geothermal water well under 1000m, accidents of filtering or sealing material plugging and casing or strainer breaking will happened rather often.
前半沟套管已在其内部通道表面，以适应中等6毫米螺栓。
The top half of the bushing has groove on its inside channel surface to accommodate the middle 6mm bolt.
金属导管严禁对口熔焊连接，镀锌或壁厚小于等于2毫米钢导管不得套管连接；
Butt fusion connection is banned for metallic conduit, and bush connection is banned for galvanized steel conduit, or steel conduit with wall thickness of 2 mm and below;
江苏油田已成功完成了40余口套管内侧钻井，所完成的侧钻井全部中靶，最小靶心距不到1米。
Jiangsu Oilfield has already finished more than 40 side tracking Wells successfully. All the side tracking Wells finished are within the range of target district.
江苏油田已成功完成了40余口套管内侧钻井，所完成的侧钻井全部中靶，最小靶心距不到1米。
Jiangsu Oilfield has already finished more than 40 side tracking Wells successfully. All the side tracking Wells finished are within the range of target district.
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