石油科学通报2026，Vol.11Issue(3)：722-733,12.DOI:10.3969/j.issn.2096-1693.2026.03.14
光纤原位地应力测量方法研究
In-situ stress measurement via fiber optics
摘要
Abstract
Accurate in-situ stress determination is vital for evaluating the mechanical state of subsurface rock and supports key petroleum engineering operations such as wellbore stability,hydraulic fracturing design,and fracture propagation control.Increasingly complex geological settings expose the limitations of conventional measurement methods in resolution,accuracy,and continuity.Fiber-optic sensing provides a means for continuous and high-precision monitoring under such conditions.This work presents an in-situ stress measurement method that combines fiber-optic strain sensing with a reverse differential strain mechanism.By applying internal pressure to drive microfractures around the borehole from closure to reopening,the method infers in-situ stress from the mechanical response of t he rock.Laboratory physical simulation experiments were conducted to establish the theoretical framework and measurement workflow.Results show that fiber-optic strain data effectively capture rock anisotropy and heterogeneity,enabling estimation of in-situ stress ratios through the reverse differential strain model.Compared with the Kaiser acoustic emission method,the approach yields an 8%～24%error range,averaging 16%.Although still in its early phase,the method offers a promising technical pathway for in-situ stress determination in oil and gas engineering and provides a foundation for future refinement and application.关键词
地应力/光纤监测/差应变法/水力压裂/井壁稳定Key words
in-situ stress/fiber optic monitoring/differential strain analysis/hydraulic fracturing/wellbore stability分类
能源科技引用本文复制引用
张鲲鹏,黄鑫,黄志文,王溯,王海波,陈勉..光纤原位地应力测量方法研究[J].石油科学通报,2026,11(3):722-733,12.基金项目
国家自然科学基金面上项目"纹层型页岩油组合流体压裂人工缝网形成机制与动态调控"(52374066)和新型油气勘探开发国家科技重大专项"新一代复杂储层改造关键技术与装备"课题4任务1:压裂全周期分布式光纤多物理场响应机制研究(2024ZD1404704-01)联合资助 （52374066）
