LCM
Lost Circulation Materials (LCM)
Functional class of bridging and sealing materials for partial to severe lost circulation. Composition is selected against fracture width, fluid type and operational constraints.
Application
Preventive background LCM, sweep pills and dedicated lost-circulation treatments in drilling and cementing. Products include crushed seashell, nutshell, fibres, cellulose, graphite and engineered blends.
Technical characteristics (quality certificate)
Typical values as stated on a mill quality certificate (passport) for a standard commercial grade. Actual lot values are confirmed in the COA / TDS for the selected manufacturer.
Particle size distribution
Per LCM grade (fine / medium / coarse)
API RP 13I / field SOP
Loss on drying
≤ 10%
API 13A / Manufacturer TDS
Reference profile for orientation. For each supply we confirm grade, origin and certificate data against your specification, well conditions and delivery requirements.
Typical functions
- Fracture bridging
- Sealing of porous/vuggy intervals
- Sweep / pill treatments
- Support of wellbore strengthening programmes
Product information
- Chemical name
- LCM blends (fibrous, flake, granular, graphite, nutshell, cellulose)
- Formula / class
- LCM
- Appearance
- Varies widely: flakes, fibres, granules or powders. Appearance is not a substitute for PSD and blend design.
- Packaging
- Bags or big bags, product-specific.
LCM products are application-specific. A seashell blend is not equivalent to graphite or fibre LCM. Send the lost-circulation description, mud type and preferred particle sizes for matching.
In this category
PAC-LV
PAC LV
Low-viscosity polyanionic cellulose used to control fluid loss in water-based drilling fluids with limited impact on rheology.
Open product →PAC-HV
PAC HV
High-viscosity PAC providing both fluid-loss control and additional viscosity in water-based drilling muds.
Open product →CMC
CMC
Cellulose ether used as a fluid-loss additive and viscosifier in water-based drilling fluids, available in LV and HV grades.
Open product →