Premilled window improves Level 3 multilateral design, functionality

A new premilled window system provides another option for completing multilateral wells in the Orinoco heavy oil projects in Venezuela.Sincor, one of four joint ventures in the area, installed the prototype TAML (Technology Advancement for Multilaterals) Level 3 system in its WC03 well.Advantages to this type of completion include:No need to mill the casing.A controlled premilled window geometry.Easy whipstock retrieval.Large ID through junction.Lateral annular casing packer (ACP) close to the junction.Three-trip installation.Reduced installation time.The installation did encounter the limitations of sand entering the main bore after the completion, tight locking collet tolerances inside ...

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