ELViS spacer technology was commercialized in 2009 successfully and has been applied in various oil and gas fields in the world. It has been proved to be effective in cementing oil or gas wells with the following conditions and properties:

Temperature:	BHST 95-320°F (35-160°C)
Density:	10.0 ppg to 20.5 ppg (1.20 – 2.45 g/cm3)
Mix-water:	Fresh water, seawater, and brines
Rheology:	Adjustable up to 160°C
API mud fluid loss：	≤50 mL

Further information about field jobs is described in documented “Case History of ELViS Technology”.

Typical compatibility and thickening time of ELViS spacers are shown in the following Table and Figures.

Mud, 1.95g/cm3	Rheology at room temperature	270/169/128/82/15/9
	Rheology at 93℃	85/55/42/30/7/4
Spacer, 2.05g/cm3	Rheology at room temperature	150/98/78/52/16/15
	Rheology at 93℃	102/72/59/42/12/11
Lead slurry, 2.10g/cm3	Rheology at room temperature	x/194/138/75/5/4
	Rheology at 93℃	226/125/89/48/4/3

   

    

High temperature (KCM004) and medium temperature ELViS additive play the most important role in cementing job design using effective laminar technique. In addition, defoamer (KCM043) and antifoam agent (KCM003) are also used in ELViS systems. ELViS density can be easily adjusted with various weighing agents such as hematite and barite, which are compatible with ELViS additives.

The laboratory procedures, quality assurance program and guidelines for field mixing and handling of ELViS systems are described in ELViS fluid manual.

Refer to the technical sheet and SDS of the respective product for the health, safety and environmental information of each product.