@Article{cmes.2023.027996,
AUTHOR = {Haoyu Fu, Hua Liu, Xiaohu Hu, Lei Wang},
TITLE = {Horizontal Well Interference Performance and Water Injection Huff and Puff Effect on Well Groups with Complex Fracture Networks: A Numerical Study},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {137},
YEAR = {2023},
NUMBER = {3},
PAGES = {2285--2309},
URL = {http://www.techscience.com/CMES/v137n3/53741},
ISSN = {1526-1506},
ABSTRACT = {Well interference has become a common phenomenon with the increasing scale of horizontal well fracturing.
Recent studies on well interference in horizontal wells do not properly reflect the physical model of the postfracturing well groups and the realistic fracturing process of infill wells. Establishing the correspondence between
well interference causative factors and manifestations is of great significance for infill well deployment and
secondary oil recovery. In this work, we develop a numerical model that considers low velocity non-Darcy seepage
in shale reservoirs to study the inter-well interference phenomenon that occurs in the Santanghu field, and construct
an explicit hydraulic fracture and complex natural fracture network model with an embedded discrete fracture
model, focusing on the effect of fracture network morphology on well interactions. The model also considers a
multi-segment wellbore model to accommodate the effect of inter-well crossflow on wellbore tubular flow. The
changes in formation pressure and water saturation during fracturing are performed by controlling the injection
pressure and water injection rate. The result shows that the shape of the fracture network generated by the infill
well with the old well determines the subsequent fluid and oil-increasing performance of the disturbed well. The
synergistic production or competitive relationship formed by fractures with different connectivity between the two
wells determines the positive and negative effects of the interference. The paper also investigates the adaptation
study of water injection huff and puff schemes for well groups with different connectivity, and demonstrated a
potential yield increase of up to 10.85% under adaptation injection. This method of identifying well interference
based on the production dynamics of affected wells and the subsequent corresponding water injection method
provides valuable references for the selection of secondary oil recovery measures.},
DOI = {10.32604/cmes.2023.027996}
}