April 1 (Reuters) - Pipeline operator Summit Midstream

Partners ( SMLP ) on Monday launched a non-binding open season

to gauge interest for services of a natural gas pipeline running

from the Delaware Basin in New Mexico and Texas to the Waha hub

in West Texas.

The open season for the 135-mile Double E pipeline will run

through April 29, the company said in a statement.

The pipeline can move 386 million cubic feet per day (bcfd),

and is jointly owned by Summit and Exxon Mobil ( XOM ), with

Summit holding a 70% stake.