Organization and Nature of Operations

6 Months Ended

Jun. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Nature of Operations

Organization Noble Midstream Partners LP (the Partnership, NBLX, we, us or our) is a growth-oriented Delaware master limited partnership formed in December 2014 by our sponsor, Noble Energy, Inc. (Noble or Parent), to own, operate, develop and acquire a wide range of domestic midstream infrastructure assets. Our current focus areas are the Denver-Julesburg Basin (DJ Basin) in Colorado and the Southern Delaware Basin position of the Permian Basin (Delaware Basin) in Texas.

Partnership Assets Our assets consist of ownership interests in certain development companies (DevCos) which serve specific areas and integrated development plan (IDP) areas and consist of the following:

DevCo	Areas Served	NBLX Dedicated Service	NBLX Ownership	Noncontrolling Interest (1)
Colorado River DevCo LP	Wells Ranch IDP (DJ Basin) East Pony IDP (DJ Basin) All Noble DJ Basin Acreage	Crude Oil Gathering Natural Gas Gathering Water Services Crude Oil Gathering Crude Oil Treating	100%	N/A
San Juan River DevCo LP	East Pony IDP (DJ Basin)	Water Services	25%	75%
Green River DevCo LP	Mustang IDP (DJ Basin)	Crude Oil Gathering Natural Gas Gathering Water Services	25%	75%
Laramie River DevCo LP	Greeley Crescent IDP (DJ Basin)	Crude Oil Gathering Water Services	100%	N/A
	Black Diamond Dedication Area (DJ Basin)	Crude Oil Gathering Natural Gas Gathering	54.4%	45.6%
Blanco River DevCo LP	Delaware Basin	Crude Oil Gathering Natural Gas Gathering Produced Water Services	40%	60%
Gunnison River DevCo LP	Bronco IDP (DJ Basin)	Crude Oil Gathering Water Services	5%	95%
Trinity River DevCo LLC (2)	Delaware Basin	Crude Oil Transmission Natural Gas Compression	100%	N/A
Dos Rios DevCo LLC (3)	Delaware Basin	Crude Oil Transmission Y-Grade Transmission	100%	N/A

⁽¹⁾  The noncontrolling interest represents Noble’s retained ownership interest in each DevCo. The noncontrolling interest in Black Diamond Gathering LLC (Black Diamond) represents Greenfield Member’s interest in Black Diamond.

⁽²⁾  Our ownership interest in Advantage Pipeline Holdings, L.L.C. (the Advantage Joint Venture) is owned through Trinity River DevCo LLC. See Note 7. Investments.

⁽³⁾  Our ownership interests in Delaware Crossing LLC (the Delaware Crossing Joint Venture), EPIC Y-Grade, LP (EPIC Y-Grade) and EPIC Crude Holdings, LP (EPIC Crude) are owned through wholly-owned subsidiaries of Dos Rios DevCo LLC. See Note 7. Investments.

Nature of Operations Through our ownership interests in the DevCos, we operate and own interests in the following assets:

• crude oil gathering systems;

• natural gas gathering systems and compression units;

• crude oil treating facilities;

• produced water collection, gathering, and cleaning systems;

• fresh water storage and delivery systems; and

• investments in midstream entities that provide transportation services.

We generate revenues primarily by charging fees on a per unit basis for gathering crude oil and natural gas, delivering and storing fresh water, and collecting, cleaning and disposing of produced water. Additionally, we purchase and sell crude oil to customers at various delivery points on our gathering systems.