Gulfport Energy Corporation Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Supplemental Information On Oil And Gas Exploration And Production Activities (Oil and Gas Reserves) (Details)

Supplemental Information On Oil And Gas Exploration And Production Activities (Oil and Gas Reserves) (Details)	12 Months Ended
	Dec. 31, 2014 MBbls	Dec. 31, 2013 MBbls	Dec. 31, 2012 MBbls
Oil [Member]
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of the period	8,346	8,106	13,954
Purchases in oil and gas reserves in place	173	0	0
Extensions and discoveries	4,975	2,765	4,732
Sales of oil and gas reserves in place	0	0	(7,875)
Revisions of prior reserve estimates	(1,313)	(208)	(382)
Current production	(2,684)	(2,317)	(2,323)
End of period	9,497	8,346	8,106
Proved developed reserves	5,719	5,609	5,175
Proved undeveloped reserves	3,778	2,737	2,931
Gas [Member]
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of the period	146,446	33,771	15,728
Purchases in oil and gas reserves in place	8,863	0	0
Extensions and discoveries	629,151	123,597	31,265
Sales of oil and gas reserves in place	0	0	(11,757)
Revisions of prior reserve estimates	(6,136)	(2,031)	(357)
Current production	(59,318)	(8,891)	(1,108)
End of period	719,006	146,446	33,771
Proved developed reserves	345,166	94,552	18,482
Proved undeveloped reserves	373,840	51,894	15,289
Natural Gas Liquids [Member]
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of the period	5,675	145	2,791
Purchases in oil and gas reserves in place	353	0	0
Extensions and discoveries	22,594	5,850	148
Sales of oil and gas reserves in place	0	0	(2,729)
Revisions of prior reserve estimates	(304)	0	0
Current production	(2,050)	(320)	(65)
End of period	26,268	5,675	145
Proved developed reserves	12,379	3,527	44
Proved undeveloped reserves	13,889	2,148	101
Diamondback Energy, Inc [Member] \| Oil [Member]
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of the period		5,606	3,874
Change in ownership interest in Diamondback		(3,720)	0
Purchases in oil and gas reserves in place		528	1,543
Extensions and discoveries		1,227	665
Revisions of prior reserve estimates		(428)	(314)
Current production		(146)	(162)
End of period		3,067	5,606
Proved developed reserves		1,425	1,539
Proved undeveloped reserves		1,642	4,068
Diamondback Energy, Inc [Member] \| Gas [Member]
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of the period		7,398	4,398
Change in ownership interest in Diamondback		(4,909)	0
Purchases in oil and gas reserves in place		752	2,292
Extensions and discoveries		1,741	804
Revisions of prior reserve estimates		(417)	82
Current production		(124)	(178)
End of period		4,441	7,398
Proved developed reserves		2,263	2,753
Proved undeveloped reserves		2,178	4,645
Diamondback Energy, Inc [Member] \| Natural Gas Liquids [Member]
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of the period		1,766	1,080
Change in ownership interest in Diamondback		(1,171)	0
Purchases in oil and gas reserves in place		120	540
Extensions and discoveries		331	186
Revisions of prior reserve estimates		(249)	(1)
Current production		(26)	(39)
End of period		771	1,766
Proved developed reserves		358	641
Proved undeveloped reserves		413	1,124
Grizzly Oil Sands ULC [Member] \| Oil [Member]
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning of the period	13,637,000
Change in ownership interest in Diamondback	0
Extensions and discoveries	0
Revisions of prior reserve estimates	990,000
Current production	(69,000)
End of period	14,558,000
Proved developed reserves	1,632,000
Proved undeveloped reserves	12,926,000