The Analysis of Applications of Micro-flux Control Drilling Technology in Narrow Density Window Drilling Scenarios

Drilling in narrow window is complex. Drilling accidents like kick, loss, collapse and stuck often occurs. MPD technology can effectively solve these problems. Micro-flux control technology,one style of MPD technology, has the advantage of simple structure, low costs and greatly enhancing the ability of well control. This paper focuses on research of the micro-flux controlled drilling technology. It includes structure, principle, control mechanism and application. Practice has proved that micro-flux controlled drilling technology can effectively solve the problems triggered by complex situations and ensure the safety of drilling.