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Drilling Productivity Report

Release Date:  May 11, 2015  |  Next Release: June 8, 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 May 2015 June 2015 change   May 2015 June 2015 change
Bakken 610 631 21   607 620 13
Eagle Ford 700 720 20   1,754 1,783 29
Haynesville 27 27 -   5,963 6,034 71
Marcellus 37 38 1   8,176 8,222 46
Niobrara 480 497 17   1,865 1,884 19
Permian 270 296 26    501 543 42
Utica 243 253 10    6,386 6,650 264
Rig-weighted average 390 404 14   2,176 2,307 131
Oil production
thousand barrels/day
Gas production
million cubic feet/day
Region May 2015 June 2015 change   May 2015 June 2015 change
Bakken 1,298 1,267 (31)   1,529 1,499 (30)
Eagle Ford 1,690 1,643 (47)   7,486 7,405 (81)
Haynesville 58 58 -   7,034 7,034 -
Marcellus 57 57 -   16,716 16,737 21
Niobrara 427 411 (16)   4,630 4,565 (65)
Permian 2,049 2,056 7    6,442 6,436 (6)
Utica 64 65 1    2,460 2,509 49
Total 5,643 5,557 (86)   46,297 46,185 (112)


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