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Drilling Productivity Report

Release Date:  August 14, 2017  |  Next Release: September 18, 2017  |  full report

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Report data (aggregated by region)

DUC data (aggregated by region)

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New-well oil production per rig
New-well gas production per rig
thousand cubic feet/day
Region August 2017 September 2017 change   August 2017 September 2017 change
Anadarko 370 372 2   2,507 2,512 5
Appalachia 127 128 1   14,210 14,108 (102)
Bakken 1,177 1,190 13   1,554 1,557 3
Eagle Ford 1,410 1,379 (31)   4,620 4,642 22
Haynesville 33 34 1   7,540 7,578 38
Niobrara 1,284 1,285 1   4,523 4,552 29
Permian 599 595 (4)    1,005 999 (6)
Total 655 645 (10)   3,483 3,460 (23)
Oil production
thousand barrels/day
Gas production
million cubic feet/day
Region August 2017 September 2017 change   August 2017 September 2017 change
Anadarko 447 459 12   5,979 6,057 78
Appalachia 96 98 2   24,299 24,649 350
Bakken 1,044 1,054 10   1,924 1,950 26
Eagle Ford 1,379 1,393 14   6,254 6,317 63
Haynesville 46 46 -   6,725 6,877 152
Niobrara 483 498 15   4,805 4,905 100
Permian 2,537 2,601 64    8,511 8,671 160
Total 6,032 6,149 117   58,497 59,426 929
Drilled but uncompleted wells (DUC)
Region June 2017 July 2017 change  
Anadarko 906 948 42  
Appalachia 724 711 (13)  
Bakken 784 782 (2)  
Eagle Ford 1,385 1,420 35  
Haynesville 189 194 5  
Niobrara 668 674 6   
Permian 2,195 2,330 135   
Total 6,851 7,059 208  

This month’s Drilling Productivity Report (DPR) has two significant changes to improve the coverage and quality of the analysis.

First, the DPR is expanding to include the Anadarko region, consistent with DPR’s aim to cover the most prolific and active on-shore regions where oil and natural gas are produced from shales and other tight resources. In the recent years the Anadarko region, which includes 24 Oklahoma and 5 Texas counties, has become the target of many producers using improved drilling and completion technology to this already well-established oil and gas producing basin. As of July 2017, there are 129 operating rigs in the Anadarko region, second to only Permian region with 373 operating rigs.

Second, the DPR will henceforth present data for the Marcellus and Utica regions as a combined Appalachia region. With the increasing number of wells in Pennsylvania being drilled into the Utica formation and some wells in Ohio producing from the Marcellus shale, the previous regional definitions based on surface boundaries are becoming less meaningful, especially where the two plays overlap. Furthermore, combining the relatively small number of active rigs across the broader Appalachia region should improve the precision of our productivity estimates. State-level production data will continue to be provided through EIA’s monthly survey of operators in major producing states, including, Pennsylvania, Ohio, and West Virginia.

Supplemental DPR data for the Anadarko and Appalachia region, including DUC data, are being provided starting this month. Also, in order to preserve continuity of existing data series for the Marcellus and Utica regions as previously delineated, EIA will continue to provide data for those regions until further notice. Note that rig productivity, legacy well declines, and most recent production estimates for the combined Appalachia region, which are developed using analysis for all of its wells taken together, will not necessarily equal the sum of corresponding values shown for the component Utica and Marcellus regions.

Beyond the two changes being implemented in this month’s edition, EIA will continue to pursue further improvements to the DPR. Another improvement planned over the next few months will be to make DPR data available through EIA’s Application Programming Interface (API), which should enable users of the data to more easily update their own spreadsheets and analyses as new monthly data is issued.


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.

key tight oil and shale gas regions