Controlling factors of Dengying Formation reservoirs in the central Sichuan paleo-uplift
| Autor: | Wenjun Luo, Bing Luo, Wenzhi Wang, Yaoming Yang, Kang Chen, Long Wen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
020209 energy
Geochemistry Energy Engineering and Power Technology lcsh:TP670-699 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences Geochemistry and Petrology Stage (stratigraphy) 0202 electrical engineering electronic engineering information engineering Geomorphology lcsh:Petroleum refining. Petroleum products 0105 earth and related environmental sciences geography Sweet spot geography.geographical_feature_category Geology Crust Karst Karst landform Diagenesis lcsh:TP690-692.5 Facies Steep slope lcsh:Oils fats and waxes |
| Zdroj: | Petroleum Research, Vol 2, Iss 1, Pp 54-63 (2017) |
| ISSN: | 2096-2495 |
| Popis: | Macroscopic and microscopic characteristics revealed that the Dengying Formation reservoir in the central Sichuan paleo-uplift belonged to the compound genetic reservoir of the mound-shoal facies and karst. Development of the reservoir was controlled by the mound-shoal facies, and dissolution-enlarged or added pores (vugs) due to superimposed karstification modification were favorable reservoir spaces. The karst of the Dengying Formation in Tongwan stage was the stratabound-weathered crust karst of the early diagenesis stage, the extensive superimposition of mound-shoal facies and regional karstification in the central Sichuan paleo-uplift area was the key to develop the large-scale continuous Dengying Formation reservoirs. Due to differences in the development degree of mound-shoal facies and in the intensity of karst modification, the reservoir development degree varied in different zones in the paleo-uplift area. The NS-extending zone on the western side of the Gaoshiti-Moxi area was the sweet spot for reservoir development. Effective identification of mound-shoal facies and fine depiction of karst landform was the key for reservoir prediction of the Dengying Formation to discovery the superimposed area of the mound-shoal facies and the karst monadnock-karst steep slope which similar to Moxi-Gaoshiti area. Keywords: Dengying Formation, Karst, The mound-shoal facies, Reservoir, Sweet spot, The central Sichuan paleo-uplift, Sichuan Basin |
| Databáze: | OpenAIRE |
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