Study on the Influence Mechanisms of Reservoir Heterogeneity on Flow Capacity During Fracturing Flooding Development

Haimin Xu, Baolun Niu, Li Huang, Lei Zhang, Yongmao Hao () and Zichao Yue
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Haimin Xu: SINOPEC Zhongyuan Oilfield Company, Puyang 457001, China
Baolun Niu: SINOPEC Zhongyuan Oilfield Company, Puyang 457001, China
Li Huang: SINOPEC Zhongyuan Oilfield Company, Puyang 457001, China
Lei Zhang: SINOPEC Zhongyuan Oilfield Company, Puyang 457001, China
Yongmao Hao: Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, China
Zichao Yue: School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China

Energies, 2025, vol. 18, issue 13, 1-17

Abstract: Low-permeability reservoirs face significant challenges in pressure transmission during field applications of fracturing flooding development. Influenced by reservoir properties and well spacing, fracturing flooding development in such reservoirs often encounters limited propagation of high-pressure zones, ineffective pressure diffusion during water injection, low producer pressure, and poor response. This study develops a numerical simulation model for fracturing flooding development in low-permeability reservoirs of Shengli Oilfield and investigates flow capacity variations under heterogeneous reservoir conditions. Key findings reveal (1) flow capacity is maximized under low-to-high interwell permeability distribution and minimized under high-to-low distribution, with a five-fold difference between the two patterns; (2) flow capacity exhibits near-linear growth with increasing average permeability, while showing an initial increase followed by decrease with growing permeability contrast, peaking at contrast ratios of 4–6; (3) flow capacity improves with injected volume but demonstrates diminishing returns after reaching 0.05 PV, establishing this value as the critical threshold for optimal fracturing flooding performance.

Keywords: low-permeability reservoirs; fracturing flooding development; flow capacity; reservoir heterogeneity; numerical simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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