Comparison of Efficient Ways of Mud Cake Removal from Casing Surface with Traditional and New Agents

The tightness of the casing-rock formation interface is one most important elements drilling and cementing jobs. In absence required tightness, there a risk gas migration directly to ground, groundwater or atmosphere. order eliminate this type uncontrollable unfavorable flows, casing column sealed with cement slurry in annular space beyond casing. Cement displaces mud present space, although cake cannot be completely removed, which for obtaining proper binding surface drilled formation. Therefore, it prepare well remove from spacer fluid. An occasional lack wellbore requires continuous improvement technology. Accordingly, analyses are conducted on removal modified new fluids. Properly designed fluid should efficiently clean rock mass. One basic measurements analysis efficiency rotational viscometer. traditional newly fluids agents has been compared further paper. methodology use viscometer was also presented. Tests were performed various concentrations already used group agents. cleaning determined basis comparison results obtained reference sample, i.e., water rotor surface. experiments created bases analyzed finding suitable ones columns.