QU Hong jun, LI Wen hou, MIAO Jian yu, ZHANG Xiao li, PANG Jun gang. Depositional Systems and Reservoir Distribution Regulations of the Sha-3 Member in Puwei Sag, Dongpu Depression[J]. Acta Sedimentologica Sinica, 2003, 21(4): 601-606.
| Citation:
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QU Hong jun, LI Wen hou, MIAO Jian yu, ZHANG Xiao li, PANG Jun gang. Depositional Systems and Reservoir Distribution Regulations of the Sha-3 Member in Puwei Sag, Dongpu Depression[J]. Acta Sedimentologica Sinica, 2003, 21(4): 601-606.
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Depositional Systems and Reservoir Distribution Regulations of the Sha-3 Member in Puwei Sag, Dongpu Depression
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Key Laboratory of Continental Dynamics, Ministry of Education Department of Geology, Northwest University, Xi' an 710069
- Received Date: 2003-01-20
- Rev Recd Date:
2003-04-01
- Publish Date:
2003-12-10
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Abstract
In order to increase the exploration level of hidden oil & gas pools in the area around Puwei sag,Dongpu depression, sequence stratigraphy theory and the Walther' s law are taken as a guide to research Sha-3 member.On the basis of the analy ses of cores, logs and seismic data, combined with the analyses of basin structure and stratigraphy, 5 depositional systems are recognized in Sha-3 member, i.e.lake-turbidite fan system, coast & shallow lake system with sand dam and tempestite, low-stand salt lake system, delta system and deep &hemi-deep lake system.The characteristics of lithoface assemblages of each system are studied one by one.The dist ribution patterns of the depositional systems in space are analysed in each main reservoir body member, while the sedimentary models and reservoir distribution regulations of the Sha-3 member are also discussed.It is pointed out that the junctions of the under water channels and the slope break belt in the east and north of Puwei sag are the places where the main reservoir bodies develop very well, and where lake-turbidite fan system and delta system develop.
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