Divestitures	6 Months Ended
Jun. 30, 2018
Property, Plant and Equipment Impairment or Disposal [Abstract]
Divestitures	DIVESTITURES Divestitures Oil and Natural Gas We sold non-core oil and natural gas assets, net of related expenses, for $22.4 million during the first six months of 2018, compared to $17.8 million during the first six months of 2017. Proceeds from those sales reduced the net book value of our full cost pool with no gain or loss recognized. Mid-Stream On April 3, 2018, we sold 50% of the ownership interest in our mid-stream segment, Superior. The purchaser is SP Investor Holdings, LLC, a holding company jointly owned by OPTrust and funds managed and/or advised by Partners Group, a global private markets investment manager. We received $300.0 million as a result of this sale. A portion of the proceeds were used to pay down our bank debt and the remainder will be used to accelerate the drilling program of our upstream subsidiary, Unit Petroleum Company, make additional capital investments in the jointly owned Superior, and for general working capital purposes. In connection with the sale of the interest in Superior, we took the necessary actions under the Indenture governing our outstanding senior subordinated notes to secure the ability to close the sale and have Superior released from the Indenture. Superior will be governed and managed under its Amended and Restated Limited Liability Company Agreement and the Master Services and Operating Agreement (MSA) entered into by Superior and an affiliate of Unit, as both of those agreements may be amended from time to time. Further details are in Note 13 – Variable Interest Entity Arrangements.

DIVESTITURES

Divestitures

Oil and Natural Gas

We sold non-core oil and natural gas assets, net of related expenses, for $22.4 million during the first six months of 2018, compared to $17.8 million during the first six months of 2017. Proceeds from those sales reduced the net book value of our full cost pool with no gain or loss recognized.

Mid-Stream

On April 3, 2018, we sold 50% of the ownership interest in our mid-stream segment, Superior. The purchaser is SP Investor Holdings, LLC, a holding company jointly owned by OPTrust and funds managed and/or advised by Partners Group, a global private markets investment manager. We received $300.0 million as a result of this sale. A portion of the proceeds were used to pay down our bank debt and the remainder will be used to accelerate the drilling program of our upstream subsidiary, Unit Petroleum Company, make additional capital investments in the jointly owned Superior, and for general working capital purposes. In connection with the sale of the interest in Superior, we took the necessary actions under the Indenture governing our outstanding senior subordinated notes to secure the ability to close the sale and have Superior released from the Indenture.

Superior will be governed and managed under its Amended and Restated Limited Liability Company Agreement and the Master Services and Operating Agreement (MSA) entered into by Superior and an affiliate of Unit, as both of those agreements may be amended from time to time. Further details are in Note 13 – Variable Interest Entity Arrangements.