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活性氢氧离子促使页岩裂解,直到目前才引起人们的特别关注。去年证实,氢氧根对欲钻地层浸害较大,致使泥浆处理剂耗量比以前的实际耗量大得多。氢氧根对粘土的影响与钻井泥浆中存在的阳离子无关,也不同于近20年来关于钠和钙(土般)土化学概念中的离子交换反应。由于出现了新的有机聚电介质处理泥浆,才有可能考虑使用烧碱以外的物质维持泥浆碱度。硅酸盐性能,如解离特性和缓冲作用,主要用于控制泥浆的碱度,同时可将与烧碱有关的氢氧根的不必要影响降到最低限度。硅酸盐化合物的应用,不同于以往用它作为反絮凝剂或页岩保护剂。 文中提及的实验和现场资料表明,硅酸盐组分可用于调节泥浆碱度,同时能减少氢氧根促使粘土的裂解作用。
Active hydroxide ions promote the cracking of shale, until now only attracted the attention of people. It was confirmed last year that hydroxide is a greater target for the formation to be drilled, resulting in a much greater amount of mud treatment agent consumption than before. The effect of hydroxide on the clay is independent of the cations present in the drilling mud and also different from the ion exchange reactions in the chemical concepts of sodium and calcium (earthy) chemistry in the last two decades. It is possible to consider the use of substances other than caustic soda to maintain mud alkalinity due to the emergence of new organic polyelectrolytes. Silicate properties, such as dissociation properties and buffering, are primarily used to control the alkalinity of the mud while minimizing the unwanted effects of caustic soda-related hydroxyl radicals. The use of silicate compounds differs from what they used as a deflocculant or shale protectant in the past. The experimental and field data mentioned in the article indicate that the silicate component can be used to adjust the mud alkalinity while reducing the hydroxide to promote the cracking of clay.