西南石油大学学报(自然科学版) ›› 2005, Vol. 27 ›› Issue (5): 53-56.DOI: 10.3863/j.issn.1000-2634.2005.05.15
• 石油与天然气工程 • 上一篇 下一篇
曾晓慧1 郭大立1 王祖文2 赵金洲1
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ZENG Xiao-hui1 GUO Da-li1 WANG Zu-wen2
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摘要： 准确认识和计算压裂液综合滤失系数,既是压裂施工设计中的一个关键问题,也是压后分析评估的一个核心内容。通过对压裂液综合滤失系数的四种计算方法,即理论计算方法、压后压力降落分析、瞬时关井压力梯度法和压裂过程压力反演方法综合分析后认为,理论计算方法得到的压裂液综合滤失系数往往小于实际情况,而且地层渗透率越低问题越严重,对此给出了理论计算方法计算的压裂液综合滤失系数的修正关系式,具有重要的借鉴和指导意义。关键词:压裂;压裂液;滤失;综合滤失系数;计算方法
Abstract: Accurate understanding and calculating the total fracturing fluid leak-off coefficient is both key problem to the fracturing design and the importantmatter to the analysis after fracturing.This paper discusses and analyzes four kinds ofmethods of calculating the total fracturing fluid leak-off coefficient, .i e, theory calculation, post- fracturing pressure decline analysis,pressure gradient at instant shut-in and pressure inversion during the fracturing. The research results show that the total fracturing fluid leak-off coefficient collected from theory calculation is less than practical situation, and the lower the permeability is, themore serious the problem is. This papergives amodified equation to the total fracturing fluid leak-off coefficient collected from theory calculation.
Key words: fracturing, fracturing fluid, leak-of, f total fracturing fluid leak-off coefficient, calculating method
中图分类号:
TE357. 12
曾晓慧 郭大立 王祖文 赵金洲. 压裂液综合滤失系数的计算方法研究[J]. 西南石油大学学报(自然科学版), 2005, 27(5): 53-56.
ZENG Xiao-hui GUO Da-li WANG Zu-wen. STUDY ON THE CALCULATING METHOD OF THE TOTAL FRACTURING FLUID LEAK-OFF COEFFICIENT[J]. 西南石油大学学报(自然科学版), 2005, 27(5): 53-56.
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