SINGLE-TRIP LATERAL CORING SYSTEMS AND METHODS

摘要

A coring system may be used to create a lateral section or borehole off a wellbore, and obtain a core sample therefrom. The coring system may include a coring assembly connected to a deflector assembly to enable a single-trip coring operation. The coring assembly may include a coring bit and an outer barrel for extracting a core sample. A deflector of the deflector assembly may direct the coring bit to drill a lateral section in the borehole and extract a core sample therefrom. The coring assembly and deflector may include mating surfaces to collectively retrieve the deflector assembly and coring assembly in a single trip. A collar of the coring assembly may engage against a stop surface of a shoulder or sleeve of the deflector assembly. By pulling upwardly, the engaged collar may release the anchored deflector.

主权项

1. A single-trip coring system, comprising:
a coring assembly including a core barrel for capturing a core sample, and a coring bit coupled to the core barrel; a deflector for deflecting the coring assembly into a formation for drilling a lateral section of a borehole; and a releasable attachment between the coring assembly and the deflector.