钻井泥浆系指用回转式钻机勘探石油和天然气时,通过钻头连续循环使用的流体。这类泥浆必须严格配制,才能具有下列基本功能:①能将岩屑提升到地面;②可控制井压;③在钻孔中形成滤饼层将岩层封住,使岩层中的流体与钻孔内的泥浆分隔;④对岩层起保护作用,不与之发生反应,且能明显地改善钻孔穿过岩石的物理力学性能。配制具有这些功能的泥浆,要求对它的一些参数加以控制,即:①控制泥浆粘度,确保能将岩屑带至地表,呈胶状的泥浆应能 Drilling mud refers to the fluid continuously circulated through a drill bit when a rotary drill is used to explore oil and gas. This type of mud must be carefully formulated to have the following basic functions: â ’The rock debris can be lifted to the ground; â’¡ can control the pressure; â’ ¢ in the formation of filter cake in the drilling rock seal, so that the fluid in the formation and drilling Within the mud separation; ④ play a protective role in the rock, do not react with it, and can significantly improve the drilling through the rock’s physical and mechanical properties. Preparation of mud with these functions requires some of its parameters to be controlled, namely: (1) controlling the viscosity of the mud to ensure that the cuttings can be carried to the surface and the gelled slurry should be able to