Study on Evaluation of Effective Hydraulic Fracture Length of Gas Well and Its Influencing Factors
详细信息   
摘要

In order to accurately determine effective hydraulic fracture length and its influencing factors of gas well,to improve the pertinence of hydraulic fracturing in Xujiahe Reservoir,West Sichuan,the relationship be-tween effective length obtained from the gas wells and propped length obtained from net pressure fitting is deter-mined.The degree of the parametersinfluence on effective length is analysed by grey correlation analysis theory, and its implication to fracturing design is also analysed.Calculation results showed that there is a noticeable cor-relativity between effective length and propped length Le =0.0584 Lp1.3593 ,and effective length is shorter obvi-ously than propped length;construction parameters especially fracturing fluid volumeis the primary determinant of effective length in Xujiahe Reservoir,and the stress difference between barrier and interbed is the key objective factor.This research provides a reference for post-fracturing evaluatio.

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