FCS ® - Flexible Cement Systems

Typical Properties and Field Applications


FCS technology was commercialized in 2011 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 60-662 (15-350℃)
Density:
8.3 ppg to 23.3 ppg (1.00 – 2.80 g/cm3)
Mix-water:
Fresh water
Compressive strength:
20-30 MPa/200 for 7 days
API fluid loss:
50 mL
Treatment Wells:
Steam injectors, gas storage wells, geothermal wells, unconventional multi-stage fracturing wells
Further information about field jobs is described in documented “Case History of FCS Technology”.

Typical FCS properties are shown in the following Figures and Pictures.


           


Elasticity and Compressive Strength of Cement Prepared with FCS and Regular Slurry


              

Cement Integrity Prepared with Regular and FCS Slurries


Precautions and HSE Considerations


FCS systems include three major additives which are flexible additive KCM024, DuraCem additive KCM044A and expanding agent KCM025H/KCM025HC. Other additives such as fluid loss agent, retarder, dispersant are generally used for controllable rheological, fluid loss, thickening time and stability of FCS cement slurries. Laboratory tests are required to confirm the compatibility between FCS additives and other additives to be used in the slurry.

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

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