HOUSTON, April 30 (Reuters) - Energy pipeline operator

Enterprise Products Partners ( EPD ) on Tuesday said it notified

shippers of downtime for about 10 days in June on the

Wink-to-Webster shale oil pipeline.

The pipeline transports more than one million barrels per

day of crude oil and condensate from West Texas' Permian Basin,

the largest U.S. shale field, to the Gulf Coast for refining and

export.

The pipeline is joint venture among affiliates of Exxon

Mobil ( XOM ), Plains All American Pipeline, L.P ( PAA ), MPLX

LP ( MPLX ) and others. Exxon operates the system.