Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13

Published: April 16, 2025

In the Shunbei area of Tarim Basin, China, carbonate fault-controlled fracture-cavity reservoirs exhibit complex internal structures and heterogeneity, with primary reservoir spaces including fault plane, cave-like, disordered body reservoirs. Traditional geological modeling methods, such as multipoint geostatistical stochastic simulations or threshold-truncated based on single seismic attribute volumes, are not adequate for effectively characterizing spatial distribution reservoirs, their grille structures. This limitation leads to insufficient accuracy in inter-well connectivity predictions constrains efficient hydrocarbon development. study proposes a novel trendline-constrained object-based approach, taking No. 5 strike-slip zone case study. First, deterministic methods were employed establish contour models through fusion (structure tensor, energy gradient, variance attributes) calibrated well-log data. For architecture characterization, hierarchical strategy was implemented. The methodology innovatively integrates principal stress orientation trendline tracking algorithms cumulative probability sampling techniques, achieving quantitative alternating composed crush belt (breccia fracture belt) bedrock belt. Results show that this method accurately maps plane cave-like ensuring reserve estimation errors numerical simulation discrepancies both kept below 10%. proposed overcomes limitations conventional techniques precisely morphologies, enabling refined 3D characterization research provides crucial technical support development

Language: Английский