A method for predicting the half-length of fracturing fractures in glutenite reservoirs

Abstract

The invention discloses a glutenite reservoir fracture half-length prediction method, and relates to the field of a fracture half-length prediction technique, aiming at providing a glutenite reservoir fracture half-length prediction method capable of rapidly judging the relationship between the modified scale and the fracture half-length, improving the glutenite reservoir fracture prediction efficiency and reducing the prediction difficulty. The method comprises the steps of 1, confirming calculating parameters such as fracturing sand feeding amount, reservoir thickness and reservoir permeability; 2, calculating 'sand feeding factor'; 3, confirming a calculation model of fracture support half-length; 4, evaluating fracturing effect. Compared with the traditional software prediction and complicated mathematical model calculation analysis method, the technical method is combined with the characteristics of actually measured fracture half-length, can be used for predicting the fracture support half-length of a non-fractured layer, is simple and easily understood, and is capable of rapidly distinguishing the fracture support half-length, thus having a good guiding function for site construction control and regional reservoir evaluation.

Description

technical field [0001] The invention relates to the technical field of fracture half-length prediction, in particular to a method for predicting the half-length of sandy conglomerate reservoir fracturing fractures. Background technique [0002] Prediction of half-length of fractures in glutenite reservoirs is the basis for evaluation of stimulation effects in glutenite reservoirs. At present, the half-length prediction of fracturing fractures in glutenite reservoirs is mainly based on complex mathematical models and software predictions from various companies. [0003] The parameters of the complex mathematical model are complicated, which has the disadvantages of difficulty in understanding, many calculation parameters, and many influencing factors. It requires high professional skills and mathematical skills of forecasters, and has a high threshold. On-site staff cannot widely and quickly judge the fracturing effect . [0004] Although software prediction is simple, it h...

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Problems solved by technology

[0003] The parameters of the complex mathematical model are complicated, which has the disadvantages of difficulty in understanding, many calculation parameters, and many influencing factors. It requires high professional skills and mathematical skills of forecasters, and has a high threshold. On-site staff cannot widely and quickly judge the fracturing effect

[0004] Although software prediction is simple, it has the disadvantages of high cost, strong technical dependence, and unclear principles. The calculation of the fracture length of sandy conglomerate reservoirs by this technology requires the joint constraints of many parameters, which is highly professional and demanding. High technical threshold; at the same time, because the software source codes are all technical secrets or related patents of each company, in general, it is impossible to know its principle or its accurate prediction method, and it can only be applied, which is very restrictive for technology research and development. powerful

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