五级分支井技术在河3-支平1井的应用

5 levels multi-lateral technology application in Well He3-zp1

河3-支平1井为双分支水平井,钻探目的是利用分支水平井技术完善区块开发效果。采用了主套管窗口液力密封技术,通过在主套管内开窗后,主井眼内下入母板,分支井眼内下入分支井眼连接器,并通过分支井眼连接器上的密封实现了窗口连接处的液力密封性能,同时实现了后期投产施工时分支井眼的选择性再进入。河3-支平1井达到了五级分支井完井水平,满足了该区块的开发需要。

Well He3-zp1 is a dual-lateral horizontal well.The exploration drilling of this well aimed at improving the zonal exploiting effects by applying lateral horizontal well technology.Adopting the liquid sealing technology at the main casing window,the mother template was laid in the main hole after internal window opened in main casing,and then the lateral connector was run in the lateral holes.Great liquid sealing capability at the window junction was made by the sealing in the lateral connector,at the same time;the selective re-entry of lateral hole can be achieved during the production operation of post-stage.The technology applied in Well He3-ZP1 has achieved 5 levels multilateral well completion standard,which met the need of zonal exploitation in this area.