A new method evaluating the cementation strength of the second interface in the cement sheath was established to investigate the relation between water base mud and the cement job quality.

Study on MTC enhancing the second interface bonding strength

In order to solve the problem of low bonding strength on the second interface of conventional cement slurry system,experiment of the bonding strength of mud to cement(MTC) fluid on the second interface was conducted.

Five effects on bonding strength in sand consolidating agent were examined and the optimum conditions were obtained.

Analysis and research of cementing strength tests between water isolation tube and soil;

In view of both the understanding of the double-interface sealing system and the basic analysis of the chemical and physical properties of blast furnace slag(BFS),a set of experimental facilities was developed for the simulation of interfacial bonding in cementing,and experimental evaluation was conducted on the performance of blast furnace slag cement system by bond strength simulation test.

This paper has summarized some usual evaluation approachs to rate the following indication: the washing efficiency, cement bond strength, compatibility of the mixture, stability, rate of displacement, resistance to pollution, damage of the fluid to the strata, rheological property,corrosivity e.