Business and Organization	6 Months Ended
Jun. 30, 2015
Organization
Business and Organization	(1)Business and Organization Antero Midstream Partners LP (the “Partnership”) is a growth-oriented limited partnership formed by Antero Resources Corporation (“Antero”) to own, operate and develop midstream assets to service Antero’s natural gas and oil and condensate production. On November 10, 2014, the Partnership completed its initial public offering (the “IPO”) of 46,000,000 common units representing limited partnership interests at a price of $25.00 per common unit. The Partnership was originally formed as Antero Resources Midstream LLC and converted to a limited partnership in connection with the completion of the IPO. At the closing of the IPO, Antero contributed substantially all of its high and low pressure gathering and compression assets to Antero Midstream LLC (“Midstream Operating”), and the equity interests of Midstream Operating were contributed to the Partnership. Our condensed consolidated financial statements as of December 31, 2014 and June 30, 2015 include the accounts of the Partnership and Midstream Operating. Our assets consist of 8‑, 12‑, 16‑, and 20‑inch high and low pressure gathering pipelines and compressor stations that collect natural gas and oil and condensate from Antero’s wells in the Marcellus Shale in West Virginia and the Utica Shale in Ohio. We have agreements with Antero pursuant to which we will provide gathering and compression services for a 20-year period and a services agreement whereby Antero provides operational and management services to us. In connection with the IPO, we obtained an option for two years to purchase Antero’s integrated water business at fair market value, with a right of first offer thereafter. Further, we have a right to participate for up to a 15% non‑operating equity interest in an unnamed 50‑mile regional gathering pipeline extension (the “Regional Gathering System”) that will expire six months following the date on which the Regional Gathering System is placed into service. In addition, we have entered into a right‑of‑first‑offer agreement with Antero to allow for us to provide Antero with gas processing or NGLs fractionation, transportation or marketing services in the future.

(1)Business and Organization

Antero Midstream Partners LP (the “Partnership”) is a growth-oriented limited partnership formed by Antero Resources Corporation (“Antero”) to own, operate and develop midstream assets to service Antero’s natural gas and oil and condensate production. On November 10, 2014, the Partnership completed its initial public offering (the “IPO”) of 46,000,000 common units representing limited partnership interests at a price of $25.00 per common unit. The Partnership was originally formed as Antero Resources Midstream LLC and converted to a limited partnership in connection with the completion of the IPO. At the closing of the IPO, Antero contributed substantially all of its high and low pressure gathering and compression assets to Antero Midstream LLC (“Midstream Operating”), and the equity interests of Midstream Operating were contributed to the Partnership.

Our condensed consolidated financial statements as of December 31, 2014 and June 30, 2015 include the accounts of the Partnership and Midstream Operating.

Our assets consist of 8‑, 12‑, 16‑, and 20‑inch high and low pressure gathering pipelines and compressor stations that collect natural gas and oil and condensate from Antero’s wells in the Marcellus Shale in West Virginia and the Utica Shale in Ohio.

We have agreements with Antero pursuant to which we will provide gathering and compression services for a 20-year period and a services agreement whereby Antero provides operational and management services to us.

In connection with the IPO, we obtained an option for two years to purchase Antero’s integrated water business at fair market value, with a right of first offer thereafter. Further, we have a right to participate for up to a 15% non‑operating equity interest in an unnamed 50‑mile regional gathering pipeline extension (the “Regional Gathering System”) that will expire six months following the date on which the Regional Gathering System is placed into service. In addition, we have entered into a right‑of‑first‑offer agreement with Antero to allow for us to provide Antero with gas processing or NGLs fractionation, transportation or marketing services in the future.