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

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.