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Drilling Productivity Report

Release Date:  April 13, 2015  |  Next Release: May 11, 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 April 2015 May 2015 change   April 2015 May 2015 change
Bakken 592 610 18   595 608 13
Eagle Ford 680 700 20   1,732 1,754 22
Haynesville 26 27 1   5,876 5,964 88
Marcellus 37 37 -   8,130 8,176 46
Niobrara 455 468 13   1,846 1,865 19
Permian 240 265 25    459 498 39
Utica 234 243 9    4,738 4,870 132
Rig-weighted average 374 387 13   2,016 2,138 122
Oil production
thousand barrels/day
Gas production
million cubic feet/day
Region April 2015 May 2015 change   April 2015 May 2015 change
Bakken 1,320 1,297 (23)   1,549 1,528 (21)
Eagle Ford 1,723 1,690 (33)   7,532 7,487 (45)
Haynesville 58 58 -   7,118 7,162 44
Marcellus 57 57 -   16,706 16,716 10
Niobrara 417 403 (14)   4,680 4,630 (50)
Permian 1,981 1,992 11    6,437 6,441 4
Utica 62 64 2    1,972 2,007 35
Total 5,618 5,561 (57)   45,994 45,971 (23)


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