ENTITY

JURISDICTION

ACMP Finance Corp.

Delaware

Access Compression, L.L.C.

Oklahoma

Access MLP Operating, L.L.C.

Delaware

Access Midstream Gas Services, L.L.C.

Oklahoma

Access Midstream Ventures, L.L.C.

Delaware

Access Permian Midstream, L.L.C.

Oklahoma

Access West Texas Processing, L.L.C.

Oklahoma

Appalachia Midstream Services, L.L.C.

Oklahoma

Aux Sable Liquid Products Inc.

Delaware

Aux Sable Liquid Products LP

Delaware

Aux Sable Midstream LLC

Delaware

Bargath LLC

Delaware

Baton Rouge Fractionators LLC

Delaware

Baton Rouge Pipeline LLC

Delaware

Black Marlin Pipeline LLC

Texas

Bluestem Gas Services, L.L.C.

Oklahoma

Caiman Energy II, LLC

Delaware

Carbonate Trend Pipeline LLC

Delaware

Cardinal Gas Services, L.L.C.

Delaware

Cardinal Operating Company, LLC

Delaware

Cardinal Pipeline Company, LLC

North Carolina

Constitution Pipeline Company, LLC

Delaware

Discovery Gas Transmission LLC

Delaware

Discovery Producer Services LLC

Delaware

DMP NEW YORK, INC.

New York

Gulfstar One LLC

Delaware

Gulfstream Natural Gas System, L.L.C.

Delaware

HI-BOL Pipeline LLC

Delaware

Jackalope Gas Gathering Services, L.L.C.

Oklahoma

Laurel Mountain Midstream Operating LLC

Delaware

Laurel Mountain Midstream, LLC

Delaware

LNE PIPELINE CORPORATION

New York

Louisiana Midstream Gas Services, L.L.C.

Oklahoma

Magnolia Midstream Gas Services, L.L.C.

Oklahoma

Marsh Resources, LLC

Delaware

Mid-Continent Fractionation and Storage, LLC

Delaware

Mockingbird Midstream Gas Services, L.L.C.

Oklahoma

Northwest Pipeline LLC

Delaware

Oklahoma Midstream Gas Services, L.L.C.

Oklahoma

Overland Pass Pipeline Company, LLC

Delaware

Pacific Connector Gas Pipeline, LLC

Delaware

Pacific Connector Gas Pipeline, LP

Delaware

Parachute Pipeline LLC

Delaware

Pecan Hill Water Solutions

Delaware

Pine Needle LNG Company, LLC

North Carolina

Pine Needle Operating Company, LLC

Delaware

Ponder Midstream Gas Services, L.L.C.

Delaware

Ranch Westex JV LLC

Delaware

Texas Midstream Gas Services, L.L.C.

Oklahoma

Three Rivers Midstream LLC

Delaware

TransCardinal Company, LLC

Delaware

TransCarolina LNG Company, LLC

Delaware

Transcontinental Gas Pipe Line Company, LLC

Delaware

Utica East Ohio Midstream, L.L.C.

Delaware

Utica Gas Services, L.L.C.

Oklahoma

Wamsutter LLC

Delaware

WFS - Liquids LLC

Delaware

WFS - Pipeline LLC

Delaware

WFS Enterprises LLC

Delaware

WFS Gathering Company, L.L.C.

Delaware

Williams Bayou Ethane Pipeline, LLC

Delaware

Williams Blu Operating LLC

Delaware

Williams Energy Canada ULC

Alberta

Williams Energy Resources LLC

Delaware

Williams Energy Solutions LLC

Delaware

Williams Field Services - Gulf Coast Company, L.P.

Delaware

Williams Field Services Company, LLC

Delaware

Williams Field Services Group, LLC

Delaware

Williams Flexible Generation, LLC

Delaware

Williams Four Corners LLC

Delaware

Williams Gas Processing - Gulf Coast Company, L.P.

Delaware

Williams Gulf Coast Gathering Company, LLC

Delaware

Williams Laurel Mountain, LLC

Delaware

Williams Mobile Bay Producer Services, L.L.C.

Delaware

Williams Ohio Valley Midstream LLC

Texas

Williams Ohio Valley Pipeline LLC

Delaware

Williams Oil Gathering, L.L.C.

Delaware

Williams Olefins Feedstock Pipelines, L.L.C.

Delaware

Williams Olefins, L.L.C.

Delaware

Williams Pacific Connector Gas Operator, LLC

Delaware

Williams Partners Cooperatief U.A.

Netherlands

Williams Partners Finance Corporation

Delaware

Williams Partners Operating LLC

Delaware

Williams PERK, LLC

Delaware

Williams Pipeline Services LLC

Delaware