North Texas Barnett Shale Gas Potential ???
North Texas Barnett Shale Gas Potential ??? Presented by Dan Steward Fall Kickoff Panel Discussion Fort Worth SPE October 23, 2008
Red River Arch
M er
with Estimated Extent of Oil & Gas Prone Areas in the Barnett
t ns
Barnett Th or Abse in nt
ue
North Texas Structural Provinces
ch Ar t en es al Pr io n la os Vi o Er it Li m
V io
Ba
Viola Erosional Limit
Llano Uplift
rn et t
t Be l
Thr ust Fol d
Transition
Th in
??
Ou ach it a
Oil Prone
Bend Arch
la
Gas Prone
Barnett Core in Faulted Area
Barnett Core Showing Minor Faults and Regional Fracture
Barnett Core with Regional Fracture
Micro-Reservoir System: Porosity Increase due to Organic Carbon Decomposition
By volume (14%)
Assume 35% carbon loss due to generation
4.90% porosity increase
Jarvie et al., 2007a
Pores and C-rich Areas: Barnett Shale
Areas of higher TOC
Reed, Loucks, and Jarvie, 2008
Nanopores in the Barnett Shale Green dots are 10 nm diameter
Reed, Loucks, and Jarvie, 2008
Red River Arch
M er
with Estimated Extent of Oil & Gas Prone Areas in the Barnett
t ns
Barnett Th or Abse in nt
ue ch Ar
Transition
t EOG Fowler 6
Thr ust Fol d
Oil Prone
Bend Arch
la
Gas Prone
MEC TP Sims 2
Be l
V io
t en es al Pr io n la os Vi o Er it Li m
MEC Kathy Keele 3
Chevron Mildred Atlas 1
Ba
Viola Erosional Limit
Llano Uplift
rn et t
Th in
??
Ou ach it a
North Texas Structural Provinces
Barnett Type Log Kathy Keele Area Gas Productive Section
Acknowledgements Republic Energy Inc. Brad Curtis Dan Jarvie Emily Mitchell
Dan Steward Dan Steward is currently a consulting Geologist with Republic Energy Inc in Dallas, Texas. During the period between 1981- 2001, he was at Mitchell Energy and was a member of the team responsible for recognizing, evaluating and evolving the Barnett Shale Play in the Fort Worth Basin.
During that 20-year period he held a number of positions within company management but was always involved in the play in one capacity or another.
After the Company’s merger with Devon in 2002, Dan joined Republic Energy and continued his involvement with the Barnett Shale through their activities. This partnership has allowed him to apply the understanding of organic shales acquired from the Barnett to other shales across the United States.
In 2005, Dan was asked to write a history of the evolution of the Barnett play by George P. Mitchell. This history is currently available from the North Texas Geological Society or the Fort Worth Geological Society. In addition to this honor, Dan was selected by the American Association of Petroleum Geologists for their 2007 Explorer of the Year Award for his role in establishing the Barnett as one of the largest gas producing fields in the country.
Red River Arch
M er
with Estimated Extent of Oil & Gas Prone Areas in the Barnett
t ns
Barnett Th or Abse in nt
ue
North Texas Structural Provinces
ch Ar t en es al Pr io n la os Vi o Er it Li m
V io
Ba
Viola Erosional Limit
Llano Uplift
rn et t
t Be l
Thr ust Fol d
Transition
Th in
??
Ou ach it a
Oil Prone
Bend Arch
la
Gas Prone
Barnett Core in Faulted Area
Barnett Core Showing Minor Faults and Regional Fracture
Barnett Core with Regional Fracture
Micro-Reservoir System: Porosity Increase due to Organic Carbon Decomposition
By volume (14%)
Assume 35% carbon loss due to generation
4.90% porosity increase
Jarvie et al., 2007a
Pores and C-rich Areas: Barnett Shale
Areas of higher TOC
Reed, Loucks, and Jarvie, 2008
Nanopores in the Barnett Shale Green dots are 10 nm diameter
Reed, Loucks, and Jarvie, 2008
Red River Arch
M er
with Estimated Extent of Oil & Gas Prone Areas in the Barnett
t ns
Barnett Th or Abse in nt
ue ch Ar
Transition
t EOG Fowler 6
Thr ust Fol d
Oil Prone
Bend Arch
la
Gas Prone
MEC TP Sims 2
Be l
V io
t en es al Pr io n la os Vi o Er it Li m
MEC Kathy Keele 3
Chevron Mildred Atlas 1
Ba
Viola Erosional Limit
Llano Uplift
rn et t
Th in
??
Ou ach it a
North Texas Structural Provinces
Barnett Type Log Kathy Keele Area Gas Productive Section
Acknowledgements Republic Energy Inc. Brad Curtis Dan Jarvie Emily Mitchell
Dan Steward Dan Steward is currently a consulting Geologist with Republic Energy Inc in Dallas, Texas. During the period between 1981- 2001, he was at Mitchell Energy and was a member of the team responsible for recognizing, evaluating and evolving the Barnett Shale Play in the Fort Worth Basin.
During that 20-year period he held a number of positions within company management but was always involved in the play in one capacity or another.
After the Company’s merger with Devon in 2002, Dan joined Republic Energy and continued his involvement with the Barnett Shale through their activities. This partnership has allowed him to apply the understanding of organic shales acquired from the Barnett to other shales across the United States.
In 2005, Dan was asked to write a history of the evolution of the Barnett play by George P. Mitchell. This history is currently available from the North Texas Geological Society or the Fort Worth Geological Society. In addition to this honor, Dan was selected by the American Association of Petroleum Geologists for their 2007 Explorer of the Year Award for his role in establishing the Barnett as one of the largest gas producing fields in the country.
