Lost Circulation Materials | Schlumberger

Lost Circulation Materials

Control downhole losses of drilling fluids

M-I SWACO offers the industry’s most extensive line of lost circulation materials (LCMs) engineered specifically to seal costly loss zones. Our comprehensive suite of LCMs includes an engineered approach to the design and application of plugs and bridging agents. Our lost circulation technologies include proprietary engineering software to determine the optimal particle size distribution of bridging materials.

We provide basic LCMs ranging from flakes and fibers to specially engineered families of crosslinking polymers designed to plug large fractures or vugular zones. Additionally, our thermally activated gelling agents generate viscosity and develop a gel structure once bottomhole temperature exceeds 140 degF [60 degC].



High-efficiency, acid-soluble, single-sack loss-prevention and remedial material

Seal porous and fractured formations with fracture apertures of up to 1,000 um where acid solubility is required.


Lost-circulation materials

Effective when drilling highly porous matrix formations that are fractured or vugular.


Ground cellulose plugging agent

M-I-X II cellulose fiber is a superior plugging agent used to bridge and seal permeable formations in water-, oil- or synthetic-base mud systems.


Lost circulation materials comprising ground walnut or pecan hulls

Use ground walnut or pecan hulls as a treatment for lost circulation in all types and densities of fluid systems.


Filtration control and electrical stability lost circulation material

Lost circulation material and plugging agent that can be used in all mud systems to bridge and seal permeable formations.



High-performance, high-strength lost circulation pill

Cure losses extending from partial to a wide range of severe lost circulation scenarios, at temperatures up to 350 degF [177 degC].


Acid-soluble lost circulation pill

A single-sack proprietary blend designed for wellbore strengthening applications and a wide variety of lost circulation scenarios, including fractures and matrix permeability.


Control lost circulation

Prevent lost circulation in all types of fractures, vugular formations, matrix, and underground blowout events.

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