Page 182 - Fundamentals of Gas Shale Reservoirs

100 100 100 Grand total 100 100 100 100
Total clay
X‐ray diffraction data—clay mineralogy (weight%) well #1
23 21 11 Total clay 38 53 48 49
chlorite
38 33 20 chlorite 6.1 1.6 7.1 2.8
Kaolinite

19 16 31 Kaolinite — 16 — 11.8
Illite
19 1 29 1 33 5 Illite Illite/smectite — 32 — 35 — 41 — 35
Illite−smectite

Smectite

(Kockatea Shale) Relative clay abundance (<4 µm) % I/S expandability depth (m) Sample id (m) 40 2400 29 45 2645 27 45 2677 G3 Smectite Total nonclay — 62 — 47 — 52 — 51

Whole rock mineralogy (weight%) well #2 (Kockatea Shale)

0 2 4 magnetite — — — —
— — — —
Total expandable clay
Barite
0 0 0
— — — —
magnetite
Fluorapatite
0 1 1
1.3 4.3 0.7 15
Barite
Pyrite
0 0 1
Fluorapatite
— — — —
dolomite (calcite magnesium)
0 2 2
Pyrite
X‐ray diffraction data from Well #1 (Kockatea Shale)
— — — 3.9
Gypsum
2 0 1
dolomite
3 3 3 7
Amorphous
0 1 1
Ankerite/FE‐dolomite
— 9.7 — —
calcite
1 2 1
Siderite
7.3 10 6.1 7.1
Plagioclase (albite)
9 12 8 1 7 2 59 2 2 X‐ray diffraction data from Well #2 (Kockatea Shale) K‐Feldspar (microcline) — 50 — 20 — 42 — 18.2
calcite
Plagioclase (albite)
K‐Feldspar

TAbLE 7.2 X‐ray diffraction data Relative clay abundance in bulk sample Quartz depth (m) Sample id 36 2400 29 22 2645 27 8 2677 G3 TAbLE 7.3 Quartz depth (m) Sample id 3792 RB‐F1 3798 RB‐F2 3819 RB‐F3 3834 RB‐F4