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The Mississippian in Kansas: An Update
Rex Buchanan, Interim Director K. David Newell, Ph.D.
Kansas Geological SurveyUniversity of Kansas
Lawrence, Kansas
Mississippian rocks, Cherokee County
(www2.nau.edu/rcb7/namM345.jpg)
Kansas Rock Column
and hydrocarbon pay zones
J urassic
Cretaceous Niobrara Chalk
Dakota Formation
Triassic
LITHOLOGYAGE
Desmoinesian
Permian
Virgilian
Missourian
Cedar Hills SandstoneStone Corral anhydrite
Hutchinson salt
Chase Group
Lansing &Kansas City Groups
Marmaton &Cherokee Groups
Pen
nsylv
an
ian
Mississippian
Ordovician
Viola LimestoneSimpson GroupArbuckle GroupReagan Sandstone
Precambrian
Council Grove Group
Cambrian
Atokan
Chesteran
Morrowan Kearny Formation
Shawnee &Wabaunsee Groups
(basal Penn. unconformity)
500 mapprox scale
UNITS
Top of MSSP is at 3658
Weathered chert (with weathering rinds – light around dark interiors)Can be seen in chert clasts
Cherty limestones are very typical of the MSSP
This may be the type of dark, non-porous organic-rich limestone that will produce oil, if hydrofractured
Mississippian Pay Zone MineralogyBerexco Wellington KGS #1-32
Silicified sponge spicule
Silicified filled pore space • Plain light (10x
zoom); • Pore space filled by
blue epoxy• Fine grained
dolomite with silica cement, minor pore space
• Silicified sponge spicule
• Most of pore spaces filled with chert
3670.6’
TS provided by Datta & Barker, KSU
50
40
30
20
10
0
45
35
25
15
5
100
40
20
0
30
10
INTENTS-TO-DRILL for HORIZONTAL WELLSin SOUTHERN and WESTERN KANSAS
(half-month time increments - May 2011 through July 2013)
NUMBER OF INTENTS-TO-DRILL IN A SIX-COUNTYTIER ALONG THE OKLAHOMA STATE LINE
(HORIZONTAL INTENTS IN RED, ALL INTENTS IN GRAY)PERCENTAGE OF INTENTS THAT ARE HORIZONTAL WELLS
# ofPermits
20
10
0
15
5
June,2011
Aug,2011
Oct,2011
Dec,2011
Feb,2012
Apr,2012
June,2012
Aug,2012
NUMBER OF INTENTS-TO-DRILL FOR HORIZONTAL WELLSIN WESTERN KANSAS
90
%
80
60
70
50
# ofPermits
Oct,2012
Feb,2013
Dec,2012
Apr,2013
June,2013
Aug,2013
June,2011
Aug,2011
Oct,2011
Dec,2011
Feb,2012
Apr,2012
June,2012
Aug,2012
Oct,2012
Feb,2013
Dec,2012
Apr,2013
June,2013
Aug,2013
June,2011
Aug,2011
Oct,2011
Dec,2011
Feb,2012
Apr,2012
June,2012
Aug,2012
Oct,2012
Feb,2013
Dec,2012
Apr,2013
June,2013
Aug,2013
50,000
100,000
150,000
200,000
2010 2011 2012
Monthly Production from Modern Horizontal Wells in KS(bbls of oil equivalent; [6000 cfg = 1 BOE])
BOE/mo.
YEAR162 wells reportingproduction
BOE/day
18 wells reportingproduction
250,000
300,000
350,000
400,000
6.7 % of KansasO&G production
production fromwells first reportiing
in 2012
production fromwells first reportiing
in 20110
450,000
500,000
1 well reportingproduction
5,0004,0003,0002,0001,000
6,0007,0008,0009,000
10,00011,00012,00013,00014,00015,000
02013
production fromwells first reportiing
in 2013
550,000
16,00017,00018,000
226 wells reportingproduction
08
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10
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13
Month/Year
0
50
100
150
200
250
Da
ily P
rod
uct
ion
pe
r w
ell
(by
mo
nth
), w
ell
nu
mb
ers
number of wellsavg production (boepd) per well
Production and Numbers -- Recent Kansas Horizontal Wells
Water Usage
Mississippian-related Web sites
Recent Rule Changes
• Landspreading/KCC, KDHE
• Frack fluid disclosure/KCC
The Mississippian in Kansas: An Update
Rex Buchanan, Interim Director [email protected]
K. David Newell, Ph.D.Kansas Geological Survey
University of KansasLawrence, Kansas
