METHOD OF FORMATION FRACTURE DIMENSIONS

METHOD OF FORMATION FRACTURE DIMENSIONS

The invention is intended to determine the dimensions of the cracks resulting from the formation fracturing. To determine the crack dimensions a numerical model of the fracturing fluid ousting from the crack and filtrate zone with the formation fluid is made for the set formation parameters, fractur...

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Hauptverfasser: THIERCELIN MARC JEAN, MAKSIMENKO ANTON ALEKSANDROVICH
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator THIERCELIN MARC JEAN
MAKSIMENKO ANTON ALEKSANDROVICH
description The invention is intended to determine the dimensions of the cracks resulting from the formation fracturing. To determine the crack dimensions a numerical model of the fracturing fluid ousting from the crack and filtrate zone with the formation fluid is made for the set formation parameters, fracturing data and supposed crack dimensions, the model is made to calculate the change of the fracturing fluid concentration in the total production during the well post-fracturing commissioning; during the well commissioning, throughout the entire fracturing fluid ousting period samples of the fluid produced are periodically taken from the well mouth and the fracturing fluid concentration in the samples taken is measure, then the measurement results are compared with the model calculations and the crack length is determined based on the best match of the measurement results and the model calculations. If polymer-based fluid is used as fracturing fluid, the numerical model also includes the change of the polymer concentration in the fracturing fluid withdrawn as function of time and in the samples taken additionally the polymer concentration is measured and by comparing the measurement results with the model calculations the crack width is determined.
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To determine the crack dimensions a numerical model of the fracturing fluid ousting from the crack and filtrate zone with the formation fluid is made for the set formation parameters, fracturing data and supposed crack dimensions, the model is made to calculate the change of the fracturing fluid concentration in the total production during the well post-fracturing commissioning; during the well commissioning, throughout the entire fracturing fluid ousting period samples of the fluid produced are periodically taken from the well mouth and the fracturing fluid concentration in the samples taken is measure, then the measurement results are compared with the model calculations and the crack length is determined based on the best match of the measurement results and the model calculations. 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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title METHOD OF FORMATION FRACTURE DIMENSIONS
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