STUDY ON THE CALCULATING METHOD OF THE TOTAL FRACTURING FLUID LEAK-OFF COEFFICIENT

doi:10.3863/j.issn.1000-2634.2005.05.15

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 • Previous Articles Next Articles

STUDY ON THE CALCULATING METHOD OF THE TOTAL FRACTURING FLUID LEAK-OFF COEFFICIENT

ZENG Xiao-hui¹ GUO Da-li¹ WANG Zu-wen²

Southwest Petroleum Institute, Chengdu Sichuan 610500, China

Received:2004-10-11 Revised:1900-01-01 Online:2005-10-20 Published:2005-10-20

Abstract

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

CLC Number:

TE357. 12

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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STUDY ON THE CALCULATING METHOD OF THE TOTAL FRACTURING FLUID LEAK-OFF COEFFICIENT

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