论文部分内容阅读
旋转钻井中使用的泥浆必须具有足够的粘度.稀释剂用于改善钻井泥浆粘度与其固体含量的关系,改善胶凝强度,增加液体的可泵性.三十年代使用的第一种稀释剂是无机多磷酸盐.随着钻井工业的发展,稀释剂品种迅速增加.当前国外使用的稀释剂有无机多磷酸盐、有机磷酸盐和有机磷酸酯、丹宁类、褐煤及其衍生物、木质磺酸盐、聚合物及选择性聚合物调配物、树脂及表面活性剂等.其中使用最多、用量最大的是天然高分子化合物及其改性产品褐煤、木质磺酸盐及其衍生物.文中详述了各类稀释剂之特点、最佳使用条件及泥浆稀释剂的发展方向,最后对稀释剂的研制、使用提出几点看法.
Slurries used in rotary drilling must be of sufficient viscosity to reduce the viscosity of the drilling mud to its solids content, improve gel strength, and increase pumpability of the fluid.The first diluent used in the 1930s was inorganic Polyphosphates.With the development of the drilling industry, the rapid increase in the varieties of diluents.It is currently used abroad diluent inorganic polyphosphates, organic phosphates and organic phosphates, tannins, lignite and its derivatives, lignosulfonic acid Salt, polymers and selective polymer formulations, resins and surfactants, etc. Among them, the most widely used and most abundant natural polymers and modified products are lignite, lignosulfonates and their derivatives. The characteristics of all kinds of thinners, the best conditions for use and development of the direction of the mud thinner, and finally on the development of thinner, put forward a few observations on the use.