From the U.S. Energy Information Administration:




Drilling Productivity Report


Release Date:  April 13, 2015  |  Next Release: May 11, 2015  |  full report









 

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.