| 1 | The mudstones provide an effective seal. | |
| 2 | The research result provides theory foundation for the lithologic reservoir exploration of sand shale interbed . | |
| 3 | The South Tianshan Basin and East Tarim Basin were siliceous rock-limestone-mudstone basin. | |
| 4 | Preservation is good because pressing boxes and thick sand shale imbedded upon reservoirs. | |
| 5 | The two main clay minerals in prodelta and lacustrine mudstone are illite and chlorite. |