Petroleum & Other Liquids

‹ See All Petroleum Reports

Drilling Productivity Report

Release Date:  July 14, 2014  |  Next Release: August 11, 2014  |  full report

Previous Issue (pdf)

New-well oil production per rig
barrels/day
New-well gas production per rig
thousand cubic feet/day
Region July 2014 August 2014 change   July 2014 August 2014 change
Bakken 510 516 6   519 527 8
Eagle Ford 479 483 4   1,294 1,307 13
Haynesville 23 23 -   5,320 5,402 82
Marcellus 30 30 -   6,552 6,598 46
Niobrara 372 380 8   1,622 1,648 26
Permian 148 150 2    298 301 3
Rig-weighted average 277 281 4   1,366 1,355 (11)
Oil production
thousand barrels/day
Gas production
million cubic feet/day
Region July 2014 August 2014 change   July 2014 August 2014 change
Bakken 1,095 1,112 17   1,299 1,319 20
Eagle Ford 1,429 1,454 25   6,431 6,510 79
Haynesville 54 54 -   6,734 6,735 1
Marcellus 42 43 1   15,235 15,482 247
Niobrara 345 352 7   4,443 4,465 22
Permian 1,601 1,631 30    5,578 5,634 56
Total 4,566 4,646 80   39,720 40,145 425


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 six key fields. 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 six most prolific areas, which are located in the Lower 48 states. These six 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