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Drilling Productivity Report

Release Date:  June 8, 2015  |  Next Release: July 13, 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 June 2015 July 2015 change   June 2015 July 2015 change
Bakken 631 654 23   620 631 11
Eagle Ford 719 741 22   1,950 1,993 43
Haynesville 28 28 0   5,947 5,981 34
Marcellus 38 39 1   8,230 8,276 46
Niobrara 497 510 13   1,884 1,922 38
Permian 296 315 19    543 570 27
Utica 253 262 9    6,650 6,905 255
Rig-weighted average 404 419 15   2,339 2,414 75
Oil production
thousand barrels/day
Gas production
million cubic feet/day
Region June 2015 July 2015 change   June 2015 July 2015 change
Bakken 1,266 1,237 -29   1,499 1,471 -28
Eagle Ford 1,643 1,594 -49   7,252 7,144 -108
Haynesville 59 59 0   7,028 7,002 -26
Marcellus 57 57 0   16,522 16,494 -28
Niobrara 431 414 -17   4,611 4,558 -53
Permian 2,056 2,059 3    6,436 6,416 -20
Utica 65 66 1    2,519 2,561 42
Total 5,577 5,486 -91   45,867 45,646 -221


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