Lost Circulation Materials (LCM)

Fluid losses during drilling, whether due to formation seepage losses or fractured formations, pose a major challenge. Lost circulation material (LCM) agents can, in many cases, help restore proper wellbore circulation and enable the drilling program to proceed as engineered.

Environmentally Responsible Fluid Loss Solutions

At Oilfield International Services, our fluid loss prevention materials are derived from natural sources—fibrous particles and ground minerals selected for optimal size and performance. Our Products are designed to safely and effectively seal porous rock and fractured formations, minimising fluid losses while maintaining wellbore stability.

Product List

Oilfield International Services operates on a direct sale basis, advanced chemical product ordering will ensure operational timelines are met while maintaining costed and
competitive pricing. Download the list here.

OIS Coding Fluid System Function OIS Brand Name Chemical Product Description
OIS LCM 001WBM / OBM / NON-AQUEOUSLCMVEN–CELL FVEN–CELL F is a versatile Lost Circulation Material (LCM) which comprises graded micronized cellulose fibers, designed for situations in both preventative capacity and also the realtime treatment of downhole lost circulation. Note: This product should not be used in the reservoir section.
OIS LCM 002WBM / OBM / NON-AQUEOUSLCMVEN–CELL MVEN–CELL M is a versatile Lost Circulation Material (LCM) which comprises graded micronized cellulose fibers, designed for situations in both preventative capacity and also the realtime treatment of downhole lost circulation. Suitable for both WBM and OBM fluid systems. Note: This product should not be used in the reservoir section.
OIS LCM 003WBM / OBM / NON-AQUEOUSLCMVEN–CELL CVEN–CELL C is a versatile Lost Circulation Material (LCM) which comprises graded micronized cellulose fibers, designed for situations in both preventative capacity and also the realtime treatment of downhole lost circulation. Suitable for both WBM and OBM fluid systems. Note: This product should not be used in the reservoir section.
OIS LCM 004WBM / OBM / NON-AQUEOUSLCMVEN–MICA FVENMICA F is a versatile and effective filtration product material used both independently and with sized flakes, designed for situations in both preventative capacity and also the realtime treatment of downhole lost circulation. Suitable for both WBM and OBM fluid systems. Note: This product should not be used in the reservoir section.
OIS LCM 005WBM / OBM / NON-AQUEOUSLCMVEN–MICA MVENMICA M is a versatile and effective filtration product material used both independently and with sized flakes, designed for situations in both preventative capacity and also the realtime treatment of downhole lost circulation. Suitable for both WBM and OBM fluid systems. Note: This product should not be used in the reservoir section.
OIS LCM 006WBM / OBM / NON-AQUEOUSLCMVEN–MICA CVENMICA C is a versatile and effective filtration product material used both independently and with sized flakes, designed for situations in both preventative capacity and also the realtime treatment of downhole lost circulation. Suitable for both WBM and OBM fluid systems. Note: This product should not be used in the reservoir section.
OIS LCM 007WBM / OBM / NON-AQUEOUSLCMVEN–SHELL FVEN–SHELL F is an effective lost circulation material which can be used in a preventative capacity or realtime treatment of downhole lost circulation. Note: This product should not be used in the reservoir section.
OIS LCM 008WBM / OBM / NON-AQUEOUSLCMVEN–SHELL MVEN–SHELL M is an effective lost circulation material which can be used in a preventative capacity or realtime treatment of downhole lost circulation. Note: This product should not be used in the reservoir section.
OIS LCM 009WBM / OBM / NON-AQUEOUSLCMVEN–SHELL CVEN–SHELL C is an effective lost circulation material which can be used in a preventative capacity or realtime treatment of downhole lost circulation. Note: This product should not be used in the reservoir section.
OIS LCM 010NON-AQUEOUSLCM / BRIDGING / WEIGHTINGVEN–CARB 10VEN–CARB 10 is a sized Calcium Carbonate, which is an effective and versatile lost circulation material and can be used in a preventative capacity or realtime treatment of downhole losses. This product is acid soluble and can be used in the reservoir section.
OIS LCM 011NON-AQUEOUSLCM / BRIDGING / WEIGHTINGVEN–CARB 20VEN–CARB 20 is a sized Calcium Carbonate, which is an effective and versatile lost circulation material and can be used in a preventative capacity or realtime treatment of downhole losses. This product is acid soluble and can be used in the reservoir section.
OIS LCM 012NON-AQUEOUSLCM / BRIDGING / WEIGHTINGVEN–CARB 40VEN–CARB 40 is a sized Calcium Carbonate, which is an effective and versatile lost circulation material and can be used in a preventative capacity or realtime treatment of downhole losses. This product is acid soluble and can be used in the reservoir section.
OIS LCM 013NON-AQUEOUSLCM / BRIDGING / WEIGHTINGVEN–CARB 100VEN–CARB 100 is a sized Calcium Carbonate, which is an effective and versatile lost circulation material and can be used in a preventative capacity or realtime treatment of downhole losses. This product is acid soluble and can be used in the reservoir section.
OIS LCM 014NON-AQUEOUSLCM / BRIDGING / WEIGHTINGVEN–CARB 600VEN–CARB 600 is a sized Calcium Carbonate, which is an effective and versatile lost circulation material and can be used in a preventative capacity or realtime treatment of downhole losses. This product is acid soluble and can be used in the reservoir section.
OIS LCM 015NON-AQUEOUSLCMVEN–SEAL FVEN–SEAL F is a blended LCM mixture of flakes, granules and fibrous materials, which is particularly effective with extreme downhole losses or lost circulation. Can be used effectively in an LCM treatment prior to be spotted at the area of concern. Note: This product should not be used in the reservoir section.
OIS LCM 016NON-AQUEOUSLCMVEN–SEAL MVEN–SEAL M is a blended LCM mixture of flakes, granules and fibrous materials, which is particularly effective with extreme downhole losses or lost circulation. Can be used effectively in an LCM treatment prior to be spotted at the area of concern. Note: This product should not be used in the reservoir section.
OIS LCM 017NON-AQUEOUSLCMVEN–SEAL CVEN–SEAL C is a blended LCM mixture of flakes, granules and fibrous materials, which is particularly effective with extreme downhole losses or lost circulation. Can be used effectively in an LCM treatment prior to be spotted at the area of concern. Note: This product should not be used in the reservoir section.
OIS LCM 018NON-AQUEOUSLCMVEN–GRAPH FVEN–GRAPH F is a highly resilient and sized Graphite lost circulation material, effectively sealing and bridging problematic zones when used in a pill format or when directly injected into the drilling fluid system. Note: This product should not be used in the reservoir section.
OIS LCM 019NON-AQUEOUSLCMVEN–GRAPH MVEN–GRAPH M is a highly resilient and sized Graphite lost circulation material, effectively sealing and bridging problematic zones when used in a pill format or when directly injected into the drilling fluid system. Note: This product should not be used in the reservoir section.
OIS LCM 020NON-AQUEOUSLCMVEN–GRAPH CVEN–GRAPH C is a highly resilient and sized Graphite lost circulation material, effectively sealing and bridging problematic zones when used in a pill format or when directly injected into the drilling fluid system. Note: This product should not be used in the reservoir section.
OIS LCM 021NON-AQUEOUSLCMVEN–GRAPH S-FVEN–GRAPH S–F is a synthetic and sized Graphite lost circulation material, which is highly resistant and durable, effectively sealing and bridging problematic zones where a background concentration is required. Note: This product should not be used in the reservoir section.
OIS LCM 022NON-AQUEOUSLCMVEN–GRAPH S-MVEN–GRAPH S–M is a synthetic and sized Graphite lost circulation material, which is highly resistant and durable, effectively sealing and bridging problematic zones where a background concentration is required. Note: This product should not be used in the reservoir section.
OIS LCM 023NON-AQUEOUSLCMVEN–GRAPH S-CVEN–GRAPH S–C is a synthetic and sized Graphite lost circulation material, which is highly resistant and durable, effectively sealing and bridging problematic zones where a background concentration is required. Note: This product should not be used in the reservoir section.

Oilfield International Services possesses extensive experience in drilling and completion fluids, having successfully executed numerous projects for major oil and gas operators across the globe.