Author(s)

Zhengxi Cui^1,2, Zhipeng Zhang³, Mingling Shen²

¹Xi’an Shiyou University, Xi’an, China.
²Shaanxi Provincial Key Laboratory of Oil and Gas Reservoir, Xi’an Shiyou University, Xi’an, China.
³No. 5 Oil Production Plant of Changqing Oilfield Company, Petro China, Xi’an, China.

Based on the sheet, scanning electron microscope and high pressure mercury analysis method, this paper takes Jiyuan oilfield-Ma Jia mountain district 4 5 sandstone reservoir as the research object, from the reservoir petrology, pore type and porosity, permeability, the system analyzed the reservoir characteristics and its control factors. The results show that the sandstone in the 4 5 section of Baoziwan-Majiashan area of Jiyuan oilfield is fine in size and high in filling content. The pore types were dominated by intergranular pores and dissolved pores, with a low face rate. The reservoir property is relatively poor, with mean porosity of 11.11% and mean permeability of 1.16 × 10⁻³ µm². In the low porous, low otonic background, the development of relatively high pore hypertonic areas. Compaction and cementation should play a destructive role in reservoir properties, and dissolution should play a positive role in reservoir properties. Compaction adjusts the migration of clay minerals and miscellaneous bases in the original sediment in the study area, greatly reducing the porosity and permeability of the reservoir; the development of the cement cement, carbonate cementation and some quartz secondary compounds reduces the storage space; the dissolution effect, especially the secondary dissolution pores of the reservoir, which obviously improves the properties of the reservoir.

Ordos Basin, Jiyuan Area, Reservoir Characteristics, Reservoir Control Factor, Long 4 5 Section

Cui, Z. , Zhang, Z. and Shen, M. (2024) Baoziwan-Majiashan Area of Jiyuan Oilfield Analysis of Reservoir Characteristics and Main Control Factors in Long 4 5 Section. Open Journal of Yangtze Oil and Gas, 9, 48-64. doi: 10.4236/ojogas.2024.92003.