A Review of the Research on Retaining Mud for Drilling Engineering
The retaining mud is an important material for stabilizing the hole wall and avoiding formation collapse in drilling engineering.This review summarizes the research progress of retaining mud.Firstly,the definition,function and application scope of retaining mud are introduced,and then the mud composition,performance and its influence on the effect of retaining wall are analyzed.Different types of retaining muds,including water-based,polymer,bentonite and polymer-modified muds,were reviewed,and their characteristics and applications were com-pared.In addition,the performance evaluation and optimization strategies of retaining mud are discussed.Finally,the problems and future development directions of the current research are pointed out to promote the application and technological progress of retaining mud in drilling engineering.
Drilling engineeringRetaining mudPerformance evaluationReview of studies