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Samoylov A.S.
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a_samoylov@vniigaz.gazprom.ru |
Basic department of “Gazprom VNIIGAZ” LLC, Industrial University of Tyumen Tyumen |
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Votchel V.A.
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Basic department of “Gazprom VNIIGAZ” LLC, Industrial University of Tyumen Tyumen |
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Egorova A.P.
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“Gazprom VNIIGAZ” LLC Tyumen |
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Mokina D.S.
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“Gazprom VNIIGAZ” LLC Tyumen |
DOI: 10.24412/2076-6785-2024-3-41-48
Abstract
Well tests are an important tool for determining the reservoir properties, but for gas and gas condensate reservoirs they are one of the tools for reliable determination of the well productivity factor in the dynamics of operation and the influence of technogenic fractures of multistage hydraulic fracturing on it, both as a tool for flow stimulation and increasing hydrocarbon yield of the reservoir. In this regard, the issue of reliable assessment of all operating parameters of the well from the position of the amount of resources invested in it is particularly relevant nowadays – the widespread use of high-precision digital solutions. In addition to making operational decisions on well operation management, the strategic goal of well testing in the system of field geophysical control is to obtain information that allows, in conjunction with other geological and field data, to form reliable views of the system “productive formation - fracture – well”, and to provide detailed digital models of the field for monitoring field development and refining the development strategy.
The article presents an example of multidisciplinary interaction between specialists in hydraulic fracturing, geomechanical modeling, interpretation of field-geophysical and wells testing, laboratory studies of hydraulic fracturing fluids and materials, as well as specialists in field development for reliable determination of geometric and conductive characteristics of technogenic fractures and their contribution, using the example of one of the horizontal gas-condensate wells in an East Siberian field.
Materials and methods
• The article was written using data of field geophysical studies, engineering reports on hydraulic fracturing, results of interpretation of noise and thermometry, as well as analysis of laboratory studies on fluids and materials for hydraulic fracturing at a horizontal well in the East Siberian field.
• Interpretations of gas-dynamic studies of wells with fracturing of one of the gas condensate fields, by summarizing and analyzing the results of fracturing designs, laboratory studies of fracturing fluids and proppants, geomechanical modeling and taking into account the results of determining the flow profile.
Keywords
hydrodynamic studies of wells, conductivity, technogenic fracture, horizontal well, multistage hydraulic fracturing
