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Reservoir Characteristics and Main Control Factors of the Lower Sandstone Member Kepingtage Formation of Silurian in Tazhong Area, Tarim Basin |
XU Yanjun1, ZHONG Dakang2, SUN Haitao2 |
1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;2. College of Geosciences, China University of Petroleum, Beijing 102249, China |
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Abstract: Based on the fully recognition about stratigraphical and sedimentary characteristics of the lower sandstone member Kepingtage Formation of Silurian in Tazhong Area, Tarim Basin and by using large number of thin-sections and cores, the lithology and reservoir characteristics have been studied and the reservoir developing characteristics with main control factors have been illustrated. The characteristics of the reservoir are as follows: Sand body of lower sandstone member of Kepingtage Formation primarily consists of both fine-grained lithic sandstone and lithic quartz sandstone, with low composition maturity, rich pore-filling contents, high-rounded, and well-sorted. The main pore types are original intergranular pore, intergranular emposieu, and micro-pore. The porosity ranges from 0.5% to 14.7% and the permeability ranges from 0.1×10-3μm2 to 100×10-3μm2, therefore the reservoir is characterized by over-low porosity and permeability. Sedimentary environment, deep-bury, and lithgenesis function (compression, carbonate, cementation) are main factors that control the reservoir characters.
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Received: 23 March 2012
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[1] |
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[2] |
SU Yuliang;YUAN Bin;LI Shuoxuan;GU Yonghong;LI Hongying;SU Guohui. Influential factors of Horizontal Well Volume Fracturing Productivity in He 8 Tight Gas Reservoir[J]. , 2013, 31(19): 20-25. |
[3] |
WANG Enhui;. Tarim Basin Middle-upper Ordovician Carbonate Strata Sequence Framework and Its Control of Reef Beach Body[J]. , 2013, 31(10): 24-29. |
[4] |
YANG Hui;XU Huaimin;HUANG Ya;SUN Panke;NIU Yujie;LI Hui;. Identification of Magmatic Rocks and Their Hydrocarbon Accumulation Significance in the Central Tarim[J]. , 2013, 31(1): 38-42. |
[5] |
MENG Qingyang;PANG Xiongqi;MA Xingzhi. Seesaw Movements in Geological Process and Its Effect on Hydrocarbon Accumulation[J]. , 2012, 30(33): 41-44. |
[6] |
XU Yanjun;YU Bingsong;ZHONG Dakang. The Sedimentary Facies of Kepingtage Formation of Silurian System in Tazhong Area, Tarim Basin[J]. , 2012, 30(27): 30-34. |
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