Organization And Operations	6 Months Ended
Jun. 30, 2012
Organization And Operations [Abstract]
Organization And Operations	NOTE 1 – ORGANIZATION AND OPERATIONS QR Energy, LP (“we,” “us,” “our,” or the “Partnership”) is a Delaware limited partnership formed on September 20, 2010, to receive certain assets of the affiliated entity, QA Holdings, LP (the “Predecessor”) and own other assets. Certain of the Predecessor’s subsidiaries (collectively known as the “Fund”) include Quantum Resources A1, LP, Quantum Resources B, LP, Quantum Resources C, LP, QAB Carried WI, LP, QAC Carried WI, LP and Black Diamond Resources, LLC. Quantum Resources Management, LLC (“QRM”) provides management and operational services for us and the Fund. Our general partner is QRE GP, LLC (or “QRE GP”). We conduct our operations through our wholly owned subsidiary QRE Operating, LLC (“OLLC”). Our wholly owned subsidiary, QRE Finance Corporation (“QRE FC”), has no material assets and was formed for the sole purpose of being a co-issuer of our debt securities. We completed our initial public offering of 15,000,000 common units representing limited partner interests in the Partnership on December 22, 2010 (the “Closing Date”). On the Closing Date, a Contribution, Conveyance and Assumption Agreement (the “Contribution Agreement”) was executed by and among the Fund, the Partnership and QRE GP with net assets contributed by the Fund. In exchange for the net assets, the Fund received 11,297,737 common and 7,145,866 subordinated limited partner units. QRE GP made a capital contribution to the Partnership in exchange for 35,729 general partner units. The underwriters exercised their over-allotment option in full for 2,250,000 common units issued by the Partnership. Net proceeds from the sale of these common units, after deducting offering costs, were approximately $42 million. On October 3, 2011, the Fund contributed certain oil and gas properties (the “Transferred Properties”) pursuant to a purchase and sale agreement by and among the Fund, the Partnership and OLLC in exchange for 16,666,667 Class C Convertible Preferred Units (“Preferred Units”) and the assumption of $227 million in debt (the “Transaction”). The fair value of the Preferred Units on October 1, 2011 was $21.27 per unit or $354.5 million with net assets of $252.0 million contributed to the Partnership by the Fund. The Transaction was accounted for as a transaction between entities under common control whereby the Transferred Properties were recorded at historical book value. As such, the value of the Preferred Units in excess of the net assets contributed by the Fund was deemed a $102.5 million distribution from the Partnership and allocated pro rata to the general partner and existing limited partners. On April 17, 2012, we issued 6,202,263 common units representing limited partnership interests in us, and the Fund sold 11,297,737 of its common units it held in us (the “Equity Offering”), to the public pursuant to a registration statement filed with the Securities and Exchange Commission (the “SEC”). In conjunction with the Equity Offering, the Partnership granted the underwriters an over-allotment option for 30 days to purchase up to an additional 2,625,000 common units from the Partnership, which they exercised in full. The common units, including the units issued pursuant to the underwriters’ full exercise of their option, were issued by us or sold by the Fund at $19.18 per unit. Refer to Note 10 – Partners’ Capital for further details. Proceeds from the Equity Offering, net of transaction costs of $0.5 million and underwriter’s discount of $6.8 million, were approximately $162 million. On April 20, 2012, we closed the acquisition of primarily oil properties from Prize Petroleum, LLC and Prize Petroleum Pipeline, LLC (“Prize”) for approximately $225 million in cash (the “Prize Acquisition”), with an effective date of January 1, 2012. Refer to Note 3 – Acquisitions for further details. On June 1, 2012, we filed a registration statement on Form S-3 with the SEC to register, among other securities, our debt securities, which may be co-issued by QRE FC. The registration statement also registered guarantees of debt securities by OLLC. Refer to Note 16 – Subsidiary Guarantors for details. On July 30, 2012, we and our wholly-owned subsidiary QRE FC, issued $300 million of 9.25% Senior Notes (the “Senior Notes”) due 2020. Refer to Note 9 – Long-Term Debt for further details. At June 30, 2012, our ownership structure comprised a 0.1% general partner interest held by QRE GP, a 38.8% limited partner interest held by the Fund, represented by all of our preferred and subordinated units, and a 61.1% limited partner interest held by the public unitholders.

NOTE 1 – ORGANIZATION AND OPERATIONS

QR Energy, LP (“we,” “us,” “our,” or the “Partnership”) is a Delaware limited partnership formed on September 20, 2010, to receive certain assets of the affiliated entity, QA Holdings, LP (the “Predecessor”) and own other assets. Certain of the Predecessor’s subsidiaries (collectively known as the “Fund”) include Quantum Resources A1, LP, Quantum Resources B, LP, Quantum Resources C, LP, QAB Carried WI, LP, QAC Carried WI, LP and Black Diamond Resources, LLC. Quantum Resources Management, LLC (“QRM”) provides management and operational services for us and the Fund. Our general partner is QRE GP, LLC (or “QRE GP”). We conduct our operations through our wholly owned subsidiary QRE Operating, LLC (“OLLC”). Our wholly owned subsidiary, QRE Finance Corporation (“QRE FC”), has no material assets and was formed for the sole purpose of being a co-issuer of our debt securities.

We completed our initial public offering of 15,000,000 common units representing limited partner interests in the Partnership on December 22, 2010 (the “Closing Date”). On the Closing Date, a Contribution, Conveyance and Assumption Agreement (the “Contribution Agreement”) was executed by and among the Fund, the Partnership and QRE GP with net assets contributed by the Fund. In exchange for the net assets, the Fund received 11,297,737 common and 7,145,866 subordinated limited partner units. QRE GP made a capital contribution to the Partnership in exchange for 35,729 general partner units. The underwriters exercised their over-allotment option in full for 2,250,000 common units issued by the Partnership. Net proceeds from the sale of these common units, after deducting offering costs, were approximately $42 million.

On October 3, 2011, the Fund contributed certain oil and gas properties (the “Transferred Properties”) pursuant to a purchase and sale agreement by and among the Fund, the Partnership and OLLC in exchange for 16,666,667 Class C Convertible Preferred Units (“Preferred Units”) and the assumption of $227 million in debt (the “Transaction”). The fair value of the Preferred Units on October 1, 2011 was $21.27 per unit or $354.5 million with net assets of $252.0 million contributed to the Partnership by the Fund. The Transaction was accounted for as a transaction between entities under common control whereby the Transferred Properties were recorded at historical book value. As such, the value of the Preferred Units in excess of the net assets contributed by the Fund was deemed a $102.5 million distribution from the Partnership and allocated pro rata to the general partner and existing limited partners.

On April 17, 2012, we issued 6,202,263 common units representing limited partnership interests in us, and the Fund sold 11,297,737 of its common units it held in us (the “Equity Offering”), to the public pursuant to a registration statement filed with the Securities and Exchange Commission (the “SEC”). In conjunction with the Equity Offering, the Partnership granted the underwriters an over-allotment option for 30 days to purchase up to an additional 2,625,000 common units from the Partnership, which they exercised in full. The common units, including the units issued pursuant to the underwriters’ full exercise of their option, were issued by us or sold by the Fund at $19.18 per unit. Refer to Note 10 – Partners’ Capital for further details. Proceeds from the Equity Offering, net of transaction costs of $0.5 million and underwriter’s discount of $6.8 million, were approximately $162 million.

On April 20, 2012, we closed the acquisition of primarily oil properties from Prize Petroleum, LLC and Prize Petroleum Pipeline, LLC (“Prize”) for approximately $225 million in cash (the “Prize Acquisition”), with an effective date of January 1, 2012. Refer to Note 3 – Acquisitions for further details.

On June 1, 2012, we filed a registration statement on Form S-3 with the SEC to register, among other securities, our debt securities, which may be co-issued by QRE FC. The registration statement also registered guarantees of debt securities by OLLC. Refer to Note 16 – Subsidiary Guarantors for details.

On July 30, 2012, we and our wholly-owned subsidiary QRE FC, issued $300 million of 9.25% Senior Notes (the “Senior Notes”) due 2020. Refer to Note 9 – Long-Term Debt for further details.

At June 30, 2012, our ownership structure comprised a 0.1% general partner interest held by QRE GP, a 38.8% limited partner interest held by the Fund, represented by all of our preferred and subordinated units, and a 61.1% limited partner interest held by the public unitholders.