西南石油大学学报（自然科学版）2026，Vol.48Issue(1)：12-22,11.DOI:10.11885/j.issn.1674-5086.2025.09.15.06
海上油田限流压裂多簇裂缝扩展规律实验研究
An Experimental Study on Multi-cluster Fracture Propagation Laws in Offshore Oilfield Limited-entry Fracturing Processes
摘要
Abstract
Multi stage limited-entry fracturing is one of the most effective methods to improve the production capacity of low-permeability reservoirs in the Bozhong 25-1 Oilfield.However,when reservoir characteristics and flow limiting fracturing process parameters jointly affect each other,the mechanism of multi cluster fracture propagation is still unclear.Based on a large-scale true triaxial fracturing simulation experimental platform,we conduct experimental research on the multi cluster fracture propagation law of artificial rocks with similar physical properties in the target layer.The influence of factors such as perforation cluster spacing,cluster number,and horizontal stress difference on the multi cluster fracture propagation state is analyzed.The results indicate that increasing the spacing between clusters has little effect on the initiation pressure of rocks,but it weakens the interference between cracks and promotes the uniform expansion of multiple clusters of cracks;the increase in the number of perforation clusters will weaken the resistance of rock plastic deformation to crack propagation and increase the scale of crack propagation;when the horizontal stress difference is less than 6 MPa,multiple clusters of cracks exhibit a staggered expansion of transverse and longitudinal cracks;the increase in fracturing fluid displacement and viscosity can increase the net pressure inside the fracture,and the morphology of multiple clusters of fractures becomes more complex.This study provides a reference for optimizing the parameters of flow limiting fracturing technology in low-permeability.关键词
限流压裂/真三轴模拟/多簇裂缝/低渗透储层/海上油田Key words
limited-entry fracturing/true triaxial simulation/multi-cluster fractures/low-permeability reservoirs/offshore oil-field分类
能源科技引用本文复制引用
许杰,王允海,张彬奇,赵康佳,徐延涛..海上油田限流压裂多簇裂缝扩展规律实验研究[J].西南石油大学学报（自然科学版）,2026,48(1):12-22,11.基金项目
中国海洋石油集团有限公司"十四五"科技重大项目(KJGG2022,KJGG2022-0704) （KJGG2022,KJGG2022-0704）
