1 -

Drill main borehole. Under-ream and enlarge openhole section across junction location. Set RapidSeal system on primary casing.
2 - Position wireline-conveyed expansion tool saddles in RapidSeal outlets. Verify junction directional orientation to ensure proper expansion of outlets. Real-time process control and monitoring at surface confirm simultaneous expansion and final geometry of outlets. Retrieve expansion tool.
3 - Using the RapidSeal profile for depth verification, set wireline-conveyed cement retainer above junction to prevent a pressure differential and increase junction reliability. Cement the junction.
4 - Clean out main wellbore to top of junction outlets. The RapidSeal profile provides a positive depth indicator.
5 - Set and orient deflector in RapidSeal profile to divert drill bit and liner assembly into first outlet. Clean out cement and drill first lateral borehole. Run liner-hanger packer and casing. Install slickline plug in profile nipple below liner hanger to isolate lateral. Retrieve deflector.
6 - Set and orient a deflector in the RapidSeal profile oriented to divert bit and liner assembly into second outlet. Clean out cement and drill second lateral borehole. Run liner-hanger packer and casing in second lateral branch. Install slickline plug in profile nipple below liner hanger to isolate lateral. Retrieve deflector.
7 - Set DualAccess system in main wellbore to complete both lateral branches.

Junction Pressure Integrity
The RapidSeal system is manufactured in advance, not constructed downhole, to ensure pressure integrity. This TAML Level 6 system includes a prefabricated section of parent casing and two smaller outlets. The outlets are compressed in a special mechanical press to pass through the preceding casing and then reformed by a wireline-conveyed modular expansion tool.

Electric power operates a pump in the expansion tool that provides hydraulic pressure to pistons in two saddles, which apply enough force to simultaneously open and reform both outlets symmetrically. This expansion process, controlled and monitored in real time from surface, is performed in a single trip that takes about 45 minutes. Installation time compared with systems that use a mechanical swedge is greatly reduced.