Jiacheng Dang1,2,*, Xing Liu1,2
1School of Earth Science and Engineering, Xi'an Shiyou University, Xi'an, Shaanxi, China.
2Key Laboratory of Hydrocarbon Accumulation of Shaanxi Province, Xi'an Shiyou University, Xi'an, Shaanxi, China.
*Corresponding author: Jiacheng Dang
Abstract
The main controlling factors of tight oil have always been the core content of unconventional oil and gas geology theory. In this paper, the reservoir characteristics of Chang 7 member of X oilfield in Ordos Basin are taken as the research object, and the characteristics of sandstone reservoir of Chang 7 member of X oilfield are revealed by using logging, drilling, logging, core, thin section, mercury injection, nuclear magnetic and other data. The following conclusions can be drawn: The rock type of Chang 7 sandstone reservoir in X oilfield is mainly fine-grained feldspar sandstone, and the reservoir physical property is generally poor. As a whole, it is mainly composed of ultra-low porosity - ultra-low permeability, ultra-low porosity - ultra-low permeability tight sandstone. Residual intergranular pores, intergranular pores, dissolution pores and micro-fractures are developed, among which the dissolution pores are the most abundant, mainly feldspar and turbidite dissolved pores. In diagenesis, compaction contributes most to the densification of sandstone, and dissolution provides a good reservoir space for oil and gas accumulation.
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How to cite this paper
Reservoir Characteristics of Chang 7 Member of X Oilfield, Ordos Basin
How to cite this paper: Jiacheng Dang, Xing Liu. (2023) Reservoir Characteristics of Chang 7 Member of X Oilfield, Ordos Basin. Journal of Electrical Power & Energy Systems, 7(1), 1-5.
DOI: http://dx.doi.org/10.26855/jepes.2023.06.001