«Строительство нефтяных и газовых скважин на суше и на море»

ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ СВОЙСТВ ТАМПОНАЖНЫХ СОСТАВОВ НА ОСНОВЕ ГЛИНОЗЕМИСТОГО ЦЕМЕНТА С ДОБАВЛЕНИЕМ УГЛЕРОДНОГО МОДИФИКАТОРА

УДК: 622.245.422.2
DOI: 10.33285/0130-3872-2021-9(345)-37-41

Авторы:

¹ Санкт-Петербургский горный университет, г. Санкт-Петербург, Россия

Ключевые слова: цемент; крепление скважин; тампонажные смеси; углеродные материалы; графит.

Аннотация:

В статье обоснованы актуальность и необходимость внедрения добавок, улучшающих свойства тампонажной смеси. Дан краткий анализ цементных составов с различными модификациями углерода. Проанализировано влияние графита на физико-механические свойства тампонажных составов, изготовленных из глиноземистого цемента ГЦ-40. Описано влияние графита на процесс гидратации цемента. Проведены дифрактометрия, спектрометрия и термогравиметрия для изучения влияния графита на свойства цементных смесей. Рассмотрены прочностные свойства модифицированной тампонажной смеси в условиях нормальных температуры и давления. Оценено оптимальное содержание графита в вяжущем, позволяющее получить более высокие физико-механические свойства цементного камня (рост прочности на одноосное сжатие примерно на 15 %) по сравнению с цементным раствором без добавок. Определено, что необходимы небольшие дозы углеродных модификаторов для оптимального влиятния на свойства цементного камня.

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