大庆石油地质与开发2025，Vol.44Issue(3)：151-158,8.DOI:10.19597/J.ISSN.1000-3754.202407003
非常规油气微注压降返排分析技术现状及发展趋势
Current status and development trend of unconventional oil and gas DFIT-FBA technology
摘要
Abstract
Abstrct:Diagnostic Fluid Injection Tests-Flowback Analysis(DFIT-FBA)technology is a very important new technology for theproduction of unconventional oil and gas,which can quickly measure the key parameters of hy-draulic fracturing such as reservoir closure pressure,permeability and original formation pressure through a low-cost and easy-to-operate method,showing enormous application potential.Based on extensive literature research in China and abroad,studies on the current status,design principle,design method,application and development trend of DFIT-FBA technology are carried out.The results show that DFIT-FBA technology can significantly shorten the testing time by slowly injecting fluids into the formation at a low rate,briefly shutting down the well,and flow-ing back to the drainage at a low rate(2%～5%of the injection rate).Moreover,by using the rate transient analy-sis method and flowing material balance equation,reservoir pressure and closure pressure are effectively estimated to predict the productivity of oil and gas wells.This technology can not only provide technical support for the opti-mal design of unconventional oil and gas fracturing,identification of reservoir"sweet spots"and prevention of small-scale earthquakes,but also achieve 4D intelligent visualization of fracturing monitoring by deeply integrating with big data processing technology,improving the monitoring and identification capabilities of complex reservoir conditions.This provides more accurate technical guidance for the development of unconventional oil and gas fields,optimizes the process parameters of fracturing operations,improves the efficiency of oil and gas production and reduces the environmental risks at the same time.关键词
非常规油气/压裂测试/微注压降返排分析(DFIT-FBA)/闭合压力/储层压力/油气井产能Key words
unconventional oil and gas/fracturing test/DFIT-FBA/closure pressure/reservoir pressure/pro-ductivity of oil and gas wells分类
能源科技引用本文复制引用
许冬进,吴坤,印文龙,王勇,郭泽辰,胡君城,魏志军,何飞鹏..非常规油气微注压降返排分析技术现状及发展趋势[J].大庆石油地质与开发,2025,44(3):151-158,8.基金项目
国家自然科学基金项目"页岩气藏水平井压裂缝网流动表征及反演优化方法研究"(52004033). （52004033）
