CemFIT Heal Flexible Self-Healing Cement System | Schlumberger

CemFIT Heal

Flexible self-healing cement system

Maximize zonal isolation for the life of the well

CemFIT Heal flexible self-healing cement system helps ensure well integrity from drilling to abandonment, providing a competent annular pressure seal and protecting against hydrocarbon leaks and sustained casing pressure (SCP) at the wellhead.

With conventional cement, a cement sheath failure such as a crack or microannulus results in a hydrocarbon leak or SCP at the wellhead. The CemFIT Heal system is the only cement system in the industry that not only withstands wellbore stresses but, should any isolation defects appear, repairs itself on contact with oil or gas irrespective of methane content.

Improve bonds and seal microannuli

Unlike conventional cement systems, the CemFIT Heal system expands after setting, improving cement bonding and sealing microannuli that can cause unwanted gas migration. A low Young's modulus enables it to withstand cement sheath stresses (due to drilling, perforating, injection, hydraulic fracturing, underground gas storage, and changes in temperature, pressure, or both).

CemFIT Heal Flexible Self-healing Cement System
Conventional cement barriers can develop cracks and microannuli caused by pressure changes and other stresses, allowing fluids to flow between zones and rise to the surface.
CemFIT Heal Flexible Self-healing Cement System
The CemFIT Heal system responds to any contact with oil or gas by automatically repairing and sealing itself.

Restore integrity if sheath is damaged

In the event of a hydrocarbon seep due to cement sheath failure (crack or microannulus), the set cement responds on contact with hydrocarbons and autorepairs the pathways, restoring the hydraulic integrity of the well. The self-healing action is repeatable multiple times if annular integrity is compromised again during the life of the well.

Simplify deployment for greater efficiency and reliability

The cement job is simple to design; slurry properties can be easily adjusted to accommodate changes to cement designs and job programs. The CemFIT Heal system is also easy to blend and mix using conventional equipment, making it suitable for large-scale use.

CemFIT Heal
Flexible self-healing cement system
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