1000m水平段筛管如何有效的防止底水锥进呢，有的专家提出在水平井的根部下入筛管+盲管的组合，可以防止水锥，管串结构如下：
下入3个遇油膨胀封隔器，另外，为了防止底水锥进，在开始300m筛管下入中，准备加入部分盲管，管串设计如下
1)7″ 4-1/2″ casing hanger,2850m + 10jts 4-1/2″Casing(Overlap to 7”casing shoe)+2jts 4-1/2″Casing+ ECP assembly (Rigid centralizer + ECP + Rigid centralizer) + 1jts 4-1/2″Casing
2) 1jts 4-1/2″perforated Screen+1jts 4-1/2″Casing+1jts 4-1/2″perforated Screen (total 100m length)
3) 2jts 4-1/2″perforated Screen+1jts 4-1/2″Casing+2jts 4-1/2″perforated Screen (total 100m length)
4) 3jts 4-1/2″perforated Screen+1jts 4-1/2″Casing+3jts 4-1/2″perforated Screen (total 100m length)
5) 1jts 4-1/2″Casing+ ECP assembly (Rigid centralizer + ECP + Rigid centralizer) + 1jts 4-1/2″Casing
6) 4-1/2″perforated Screen (350m length)
7) 1jts 4-1/2″Casing+ ECP assembly (Rigid centralizer + ECP + Rigid centralizer) + 1jts 4-1/2″Casing
8) 4-1/2″perforated Screen (350m length),3995.5m,TVD2896m+ guide shoe.
