Published November 2018

Development of methodic for clogging performance of drilling wells’ walls and calculation of corresponding pressure

F.A. Ramazanov

The paper presents various technological options for maintenance of wall stability of the well. The parameters of drilling mud for streaming clogging of the walls in well drilling and productive horizons’ completion are proposed. For wall and bottomhole clogging in well drilling process with a special mud, analytical dependences for definition of its capacity and breakdown pressure value depending on clogging method applied are suggested. To specify critical state of rocks of bottomhole zone, corresponding criteria were justified and their mathematical expressions obtained.