钻井泥浆作业的技术要点
Technical points of drilling mud operation

　　钻井泥浆在建筑工程中是必不可少的一大步骤，在细节问题以及安防问题中总有着密切相关的要点需阐述。作为要点解析，我们来深入了解在施工中的重要技术运用点吧！

　　泥浆能在孔壁形成一层薄而韧的泥皮，能保护孔壁、防止坍塌、掉块而引起的卡、夹钻事故。利用泥浆内部的结构强度悬浮岩粉，使得在停钻、停泵时，岩粉不致于很快沉入孔底，防止埋钻事故。

　　其具有一定的粘度，在有裂隙或破碎地层中钻进，可以堵漏、防止漏失，减少冲洗液的消耗。

　　泥浆有护孔作用，在复杂地层中钻进用泥浆，可以少下或不下套管，大大提高了施工速度，降低钻探成本。

　　泥浆在施工中起到切土润滑、冷却机具、携渣与护壁的作用，因此一定要正确的使用泥浆施工技术，以确保挖槽质量。泥浆的静水压力能够起到液体支撑的作用，再加上泥皮有利于土壁稳定性，而粘性则能够悬浮土渣，这样能够保证钻头的钻进效率。

　　技术应用时，要确保建筑工程施工中使用的泥浆有足够的粘度、密度与浓度以保证携渣、固壁的作用。切记粘度不能过大，以免增加泥浆循环的阻力，影响混凝土的质量。还有要确保泥浆的稳定性，确保其在一定的时间内产生分层问题。

　　Drilling mud is an essential step in construction engineering, and there are always closely related points to be elaborated in details and security issues. As an analysis of the key points, let's have a deep understanding of the important technology application points in the construction!
　　The mud can form a thin and tough mud skin on the hole wall, which can protect the hole wall and prevent the sticking and clamping accidents caused by collapse and falling block. Using the internal structural strength of the mud to suspend the rock powder, the rock powder will not sink into the bottom of the hole quickly when stopping the drilling and pump, so as to prevent the drilling accident.
　　It has a certain viscosity. Drilling in fractured or fractured formations can stop leakage, prevent leakage and reduce the consumption of flushing fluid.
　　The mud has the function of protecting the hole. When drilling in the complex formation, the mud can run less or no casing, greatly improving the construction speed and reducing the drilling cost.
　　Mud plays the role of cutting and lubricating, cooling machines and tools, carrying slag and protecting wall in construction. Therefore, we must correctly use the mud construction technology to ensure the quality of trenching. The hydrostatic pressure of mud can play the role of liquid support. In addition, the mud skin is conducive to the stability of soil wall, while the viscosity can suspend the soil slag, which can ensure the drilling efficiency of the bit.
　　In the application of technology, it is necessary to ensure that the slurry used in construction has sufficient viscosity, density and concentration to ensure the role of slag carrying and wall fixation. Remember that the viscosity should not be too high, so as not to increase the resistance of mud circulation and affect the quality of concrete. The stability of the mud must be ensured within the time of stratification.