江苏探区定向井固井技术

Directional Well Cementing Techniques In Jiangsu Exploratory Areas

从套管柱设计、套管居中设计、套管附件选用、前置液设计、水泥浆设计和井眼准备等方面论述了定向井固井技术措施。江苏探区已完钻６０余口定向井，固井质量合格率１００％，优质率达８５％以上，标志着地矿部门已掌握包括多目标长裸眼井（＞３０００ｍ）、大斜度井（＞４２°）、大位移井（＞７００ｍ）等定向井固井的成套技术方法。

The directional cementing techniques areexpounded from casing string design, medial casingdesign, selection of casing accessories, pad fluids design, slurry design and borehole preparations. Morethan 60 directional wells have been completed in Jiangsu exploratory area. The certification of cementingquality is 100N, optimization over 85%, which indicates MGMR has controlled the series of directionalcementing techniques. including multipurpose longopen hole (> 3000m), highly-inclined well (> 42℃)and long reach well (>700m).