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RENZ WELL 1 - 4
'The mothers of Marcellus'

MT PLEASANT TOWNSHIP
WASHINGTON COUNTY

FIRST MARCELLUS SHALE WELL
2004

 
The Marcellus Shale gas boom began with the drilling and hydraulic fracturing of the Renz Well in 2004.

The Renz well is located in Mt Pleasant Township between the towns of Westland and Hickory, Pennsylvania.  Renz 1 was the first slick water frac east of the Mississippi, and is considered to be the 1st Marcellus Shale well drilled.

The second horizontal Marcellus well drilled was also in Mt Pleasant Township near Hickory on the Gulla farm.
 

 
 
 

RANGE RESOURCES APPALACHIA
RENZ 1, 2 & 4

RENZ 1 OG WELL  125-22074   GPS: 40.283161 -80.284025
RENZ 2 OG WELL  125-22205   GPS: 40.27691 -80.2863
RENZ 4 OG WELL  125-22705   GPS: 40.28097 -80.2812
 
 

(First Marcellus Shale wells)
Source: Pennsylvania DEP Production Reports

Farm Name

Well No.

Product

Vol.

Days

Avg/ Day

End Date

RENZ

1

Gas

21,726

365

60

6/30/10

     

9,798

182

54

12/31/10

   

 

9,344

181

52

6/30/11

     

8,749

184

48

12/31/11

     

8,635

182

47

6/30/12

     

2,723

61

45

12/31/12

     

8,957

122

73 6/30/13

RENZ

1

Oil

37

365

.1

6/30/10

   

Cond.

20

182

.1

12/31/10

   

Oil

2

181

.01

6/30/11

     

2

184

.01

12/31/11

    Cond.

9

182

.05 6/30/12
     

0

0

0 12/31/12
     

23

122

.18 6/30/13

RENZ

2

Gas

29,262

365

80

6/30/10

     

13,867

182

76

12/31/10

   

 

12,293

181

68

6/30/11

     

11,453

184

62

12/31/11

     

10,579

182

58 6/30/12
     

3,102

59

53 12/31/12
     

12,711

145

88 6/30/13

RENZ

2

Oil

161

365

.4

6/30/10

   

Cond.

18

182

.1

12/31/10

   

Oil

0

0

0

6/30/11

     

0

0

0

12/31/11

    Cond.

13

182

.07 6/30/12
     

0

0

0 12/31/12
     

15

145 .10 6/30/13

RENZ

4

Gas

20,284

365

56

6/30/10

     

9,527

181

53

12/31/10

   

 

8,743

181

48

6/30/11

     

8,472

184

46

12/31/11

     

7,338

182

40 6/30/12
     

2,020

61

33 12/31/12
     

8,886

158

56 6/30/13

RENZ

4

Oil

53

365

.2

6/30/10

   

Cond.

22

181

.1

12/31/10

   

Oil

0

0

0

6/30/11

     

8

184

.04

12/31/11

    Cond.

1

182

.005 6/30/12
     

0

0

0 12/31/12
     

17

158

.11 6/30/13
 
 
RENZ WELL
  

RENZ WELL

Production from the Marcellus in its present form started when a deep, vertical well (the Renz well) in Washington County, failed to show any economic potential in 2004 (Fig. 6). The operator, Range Resources, pulled back to the depth of the Marcellus and tested that interval with a hydraulic fracture stimulation known in industry as a ‘massive slickwater frac.’

The difference between the Renz fracture stimulation and the early Bradford treatments is largely the number and height of fractures required for economic payout. In the former case a rock unit is split with many fractures through a thickness 200-300 feet whereas in the latter case only one fracture in a sandstone layer a few feet thick is required. Much larger quantities of water are required for gas shale, hence the term, massive.

Slickwater contains an additive similar to common dish soap so that massive quantities of water can rush down wellbores without being impeded by friction between the water and the pipe. This technique was employed by Mitchell Energy in the Fort Worth Basin of Texas to produce gas from vertical wells in another gas shale, the Barnett, which had many of the same characteristics as the Marcellus gas shale.

Renz Well Map
Oil & Gas Fields of Pennsylvania (158KB image)

Initial production was so successful following the Marcellus test in the vertical Renz well that Range Resources moved quickly to consolidate its land position in Washington County, Pennsylvania and other places. By 2006, word of the Renz success had leaked out to the point where other players were seeking land positions in Pennsylvania. Following the Devon Energy model of drilling horizontal wells in the Barnett, Range Resources moved to form large enough drainage units in Washington County to experiment with the stimulation of horizontal wells during 2007. Range Resources went public with the results of its first five horizontal wells during an investor and analyst call on December 10, 2007.

The Range Resources announcement was unnoticed outside of industry experts until it was interpreted for the public in a press release issued by the Pennsylvania State University (Penn State) on January 17, 2008. This press release provided information that certified the Marcellus as a bona fide super giant gas field. Calculations in the press release were the outgrowth of over 30 years of research on gas shale.

SOURCE:
Governor’s Marcellus Shale Advisory Commission
Commonwealth of Pennsylvania
7-22-2011

 
 
  

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