Page 142 - The Petroleum System From Source to Trap

136 Morse

A FEEDER CHANNEL 8 FACIES SEQUENCE INTERPRETATION
l l l JJ ' DEBRIS 0-B lSJI CGL 7 F-U CHANNEL FILL
SlU�PS
SL
UPPER FAN
§i {�� 1·�,
O.F.
� g % �
SLOPE INTO BASIN� -�=>-L ___ J J CGL
·:?
"':'.
INVERSE TO NORMALLY �• _. � ; MS. 6 F-U CHANNELED i I I
CONGLOMERATES•
PORTION
;;�:�· � � - TERRACE -+ {CGL) SUPRA FAN � I
...
-
... ---r.:�·.
GRADED !?:-"•. ......-...
OF
.· ·
LOBES
P.S.
-
0
M.S.
p S. i; u CHANNELED :i
z
�-- MID-FAN / / 0
<II
en
C.T. 4 c-u r w
0
SMOOTH __J
z
<t
M.S. "-
<t
Cl:
SMOOTH a.
C.T. PORTION :::J
<II
CLASSIC TURBIDITES OF
SUPRA FAN
�EW SUPRAFAN LOBES
� ,j. LOWER FAN LOBE G.T.
��� � � 0 L___j 5
km
THIN BEDOED
C.T LOWER FAN
c-u
FINING· OR
COARSENING�
:JPWARD
Figure 6.7. Deep marine reservoirs are deposited at the base of the continental shelf or delta front slope as submarine fans.
(A) Reservoir sands are deposited on the upper fan valley and the suprafan lobes (after Normark, 1970). (B) An idealized
vertical sequence through a prograding fan illustrates thickening and coarsening-upward (C-U) and thinning and fining­
upward (F·U) sand bodies. Lithofacies include classic turbidites (C.T.), massive sands (M.S.), pebbly sands (P.S.), conglom­
erates (CGL), debris flows (D.F.), and slumps (SL.) (after Walker, 1978).
Table 6.6. Deep Marine Reservoirs
Location Thickness Depositional
Field Country Basin Agea Formation of Pay(m) Environment
Alba United North Sea Eoc Alba Fm 90 Deep sea fan, channel and
Kingdom levee complex
Forties United North Sea Pal Forties Fm 1 1 0 Mid to lower prograding
Kingdom submarine fan, two lobes
stacked, amalgamated
channels
Miller United North Sea U J Brae Fm 60 Submarine fan, sandy
Kingdom lobe on basin floor
Marlim Brazil U O iig Carapebus Ss 200 Submarine fan, lobe,
and channels
Albacora Brazil U K-Mio Ss 1 1 0 Submarine fan, lobe
and channels
Namorado Brazil U K Ss Submarine fan, stacked
channels and lobes
Marimba Brazil U K Ss Turbidite
Wilmington U.S.A. (Calif.) Los Angeles U Mio-U Plio Puente, Repetto >600 Turbidite
au, upper, J, Jurassic; K, Cretas; Pal, Paleoc; Eoc, Eocene; Olig, Oligocee; Mio, Miocee; Plio, Pliocene.
bA, anticline; Up, unconformity pincho; 81, tilted block; St, stratigraphic: D, domal; RIO, rollover antidine ()(growt fau�; ; WrA, wrench anticine.
cv, vertical; Lt, lateraL