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Drilling Productivity Report

Release Date:  August 10, 2015  |  Next Release: September 14, 2015  |  full report

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New-well oil production per rig
barrels/day
New-well gas production per rig
thousand cubic feet/day
Region August 2015 September 2015 change   August 2015 September 2015 change
Bakken 688 692 4   701 713 12
Eagle Ford 766 792 26   2,129 2,183 54
Haynesville 27 27 -   5,972 5,982 10
Marcellus 58 59 1   8,350 8,415 65
Niobrara 546 561 15   1,975 2,020 45
Permian 327 333 6    581 584 3
Utica 271 281 10    7,061 7,246 185
Rig-weighted average 433 434 1   2,442 2,429 (13)
Oil production
thousand barrels/day
Gas production
million cubic feet/day
Region August 2015 September 2015 change   August 2015 September 2015 change
Bakken 1,182 1,155 (27)   1,491 1,468 (23)
Eagle Ford 1,538 1,482 (56)   6,976 6,864 (112)
Haynesville 58 58 -   6,722 6,718 (4)
Marcellus 73 74 1   16,432 16,372 (60)
Niobrara 417 399 (18)   4,528 4,478 (50)
Permian 2,030 2,038 8    6,351 6,342 (9)
Utica 65 64 (1)    2,662 2,659 (3)
Total 5,363 5,270 (93)   45,162 44,901 (261)


The Drilling Productivity Report uses recent data on the total number of drilling rigs in operation along with estimates of drilling productivity and estimated changes in production from existing oil and natural gas wells to provide estimated changes in oil and natural gas production for seven key regions. EIA's approach does not distinguish between oil-directed rigs and gas-directed rigs because once a well is completed it may produce both oil and gas; more than half of the wells produce both.

While shale resources and production are found in many U.S. regions, at this time EIA is focusing on the seven most prolific areas, which are located in the Lower 48 states. These seven regions accounted for 95% of domestic oil production growth and all domestic natural gas production growth during 2011-13.

key tight oil and shale gas regions