Wolfcamp Upper A Fan Study
AAPG
ACE2019
ANNUAL CONVENTION & EXHIBITION
19 22 May
San Antonio, Texas
Core axis/near-axis facies - dominated by
debrites (paraconglomerates *)
Core B
Lateral Fringe
Lateral Fringe
Off-Axis
Core
B
B'
Axis
Off-Axis
ateral Fringe
Core A
Frontal Fringe
Distal Fringe
Core C
LOVING
LOWER ZONE
WOLFCAMP UPPER
MIDDLE ZONE
A
UPPER ZONE
GAMMA-RAY
(API)
0
250
Fig 128
Fig 19
F 10
100 ft
33 m
Core A
Off-Axis
GAMMA-RAY
(API)
250
Fig SA
Fig SC
Fig 16A
Fig 168
Fig 16C
Fig 14A
Fig 13A
Fig 148
Fig 138
Fig 15
Fig 18A
single
HEB
Fig 114
Fig 118
Fig 188
Fig 12A
Core C
Distal Fringe
GAMMA-RAY
(API)
Fig 88
*
Conglomerate not formed from normal
aqueous flow but rather through mass
transport or glacial processes - clasts
not necessarily in contact
HEB FACIES
Packstone (Ps/SLC/SLcl)
Calcareous argillaceous siltstone (SLca)
Calcareous silty mudstone (Mcs)
Mudstone (Mm)
From Kvale et al., in press, AAPG Bull.
DEBRITE
FACIES
Paraconglomerate (Pc)
Wackestone (Ws)
Bioturbated mudstone (Mmx/Mdx)
Bone Spring Fm. sands and silts
devon
250
Gamma
Ray
(API)
10 ft
150
3 m
Carbonate rock fragment
~Mudstone rock fragment
Shear
~210
Dewatering pipe
Pc Ps Is SL M
0202
Facies
B
Bioturbation
6
0.5 ft
15.24 cm
Mm
Mim
Mm
Mm (clast?
matz
Mm (clast!)
Fig
Mics
clast!
Pc (matrix)
FE
16A
Mas
Fig
16B
Pc matro
Mm
Mm (clast?)
Po mating
Fig
16C
A
0.5 ft
15.24 cm
P: (matrix)
PC (matrix)
Mm (clast)
Mm
Mm (clast)
Pc matrix
Mm (cast)
Pe Imatric
Fig
15
Pc (matr
T
Mm (clast)
Mm (clast)
Mim (clast)
Mimx
Mm
Mm (dast)
B
Mm (clast")
PC
matrix
Mm (clear)
Pc (matrix)View entire presentation