DOC-SMART multi-functional cement slurry system is composed of DOC-G80L series fluid loss additives as main agents, retarders, defoamers and other additives as auxiliary agents. DOC-G80L series fluid loss additives is a kind of AMPS based copolymer, it controls fluid loss through absorption and aggregation, when used cooperatively with various kinds of retarders in the system, it can be used in a temperature range of 30 to 210℃ and apply to intermediate casing and tail pipe cementing. DOC-SMART cement slurry system contains three series: low temperature system, high temperature system and salt water system.
Series Constitution
DOC-SMART® system contains：
DOC-SMART LT low temperature system：applying to low and medium temperature intermediate casing cementing.
DOC-SMART HT high temperature system：applying to medium and high temperature intermediate casing and tail pipe cementing.
DOC-SMART SL salt water system：applying to seawater mixed slurry and gypsum-salt bed cementing.
System Composition
1、Oil well cement：Glass G.
2、Fluid loss additives：DOC-G80L DOC-G86L DOC-G90L DOC-G80S.
3、Defoamer：DOC-X60L.
4、Retarder：DOC-H21L DOC-H100L DOC-H42L DOC-H50L.
System Features
1、Strong fluid loss and free fluid control ability.
2、Excellent temperature and salt resistance.
3、Well strength development of cement stone.
4、Good dispersant effect, slurries carry good mobility.
5、Meeting performance requirements by using only 3 to 4 kinds of additives.
