Mechanisms and diagnostic methods of fracture‑driven inter‑well interference in shale gas reservoirs
Abstract
Fracture‑driven inter‑well interference has become a major constraint on dense shale‑gas development. To address this issue, this review synthesizes the communication pathways, diagnostic responses, formation mechanisms, controlling factors, research methods, and mitigation measures of inter‑well interference. Evidence from field monitoring, physical experiments and numerical simulation is organized using a source‑pathway‑response‑control framework. Fracture‑driven inter‑well interference has been shown to arise from coupled hydraulic and geomechanical processes rather than fracture length alone. Hydraulic fractures may connect directly with offset wells or activate natural fractures and faults that transmit pressure and fluid over longer distances. Parent‑well depletion and transient stress shadows can rotate local stresses and redirect new fractures, while multi‑cluster competition concentrates fluid in dominant fractures. Geological susceptibility is governed mainly by weak plane architecture, stress state, heterogeneity, depletion history, and well spacing. In turn, event intensity and duration are controlled by treatment scale, cluster design, pumping schedule, fracturing sequence, and offset‑well operation. Reliable diagnosis requires complementary evidence: Pressure and production data detect abnormal responses; tracers and downhole pressure verify hydraulic fracture communication; microseismic and distributed fiber‑optic measurements constrain fracture growth; and transient or numerical models quantify severity. The review therefore proposes a connectivity‑based diagnosis that distinguishes geometric, hydraulic and production connectivity. Future work should integrate multi‑well experiments, field‑calibrated multiphysics models, interpretable data‑driven prediction, and closed‑loop operational control. The proposed framework supports risk‑based well spacing, stimulation design, and platform‑scale management of shale‑gas reservoirs.
Document Type: Invited review
Cited as: Wu, Y., Wang, L., Jiao, L., Wang, Q., Mu, K., Chen, Z. Mechanisms and diagnostic methods of fracture‑driven inter‑well interference in shale gas reservoirs. Advances in Geo‑Energy Research, 2026, 21(1): 60‑76. https://doi.org/10.46690/ager.2026.07.07
DOI:
https://doi.org/10.46690/ager.2026.07.07Keywords:
Shale gas, inter-well interference, fracture propagation, stress evolution, field diagnosisReferences
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