Research Article
Diagenesis and Origination of Carbonate Cements in Deeply Buried Sandstones of the Eocene Es3 Member, Raoyang Sag, Bohai Bay Basin, China
Table 2
X-ray diffraction of clay fractions in Es3 member sandstones.
| | Well | Depth (m) | Sample no. | Kaolinite | Chlorite | Smectite | Illite | Mix-layered illite-smectite |
| | C47 | 3627.4 | Ch47-2 | 27.2 | 30.3 | / | 4.0 | 38.5 | | N70x | 3565.9 | N70x-8 | 49.1 | 16.5 | / | 4.2 | 30.2 | | Ng7 | 4078.0 | Ng7-6 | / | 12.5 | / | 4.0 | 83.5 | | L101 | 3719.8 | L101-5 | / | 44.3 | / | 5.5 | 50.2 | | L101 | 3643.6 | L101-6 | 29.0 | 31.0 | / | 8.0 | 32.0 | | L101 | 3679.7 | L101-9 | / | / | / | 2.6 | 97.4 | | N101 | 3775.9 | N101-7 | 12.3 | / | / | 12.2 | 76.5 | | N35 | 3758.7 | N35-2 | 11.1 | / | / | 6.3 | 82.6 | | N201 | 3547.8 | N201-7 | 14.3 | 11.1 | / | 8.3 | 66.3 | | L107 | 3850.5 | L107-3 | 12.2 | 14.4 | / | 6.5 | 66.9 |
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