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USDOT 312736 · carrier profile

M-I DRILLING FLUIDS LLC

Doing business as M-I SWACO. Active for-hire and private carrier in Houston, TX 77072.

Power units37
Drivers25
CDL drivers15
StatusActive

Registration

USDOT number
312736
MC / docket number
MC-271174 (active)
USDOT status
Active
Operation
Interstate
Carrier type
Private property; Authorized for hire
Location
Houston, TX 77072
Hazmat
Yes, hauls hazardous materials
Safety rating
Satisfactory (rated Jan 12, 2004)
Added to the census
Apr 7, 1988
Last MCS-150 update
Jun 19, 2025
Miles reported
404,424 in 2024
Official FMCSA SAFER snapshot Other carriers in Houston

Equipment

TypeOwnedTerm leasedTrip leased
Straight trucks1210
Tractors070
Trailers1460

Power units: 37. Self-reported by the carrier on form MCS-150.

Cargo carried

  • General freight
  • Liquids and gases
  • Oilfield equipment
  • Chemicals
  • Commodities, dry bulk
  • Other: oilfield service materials

Operating authority

DocketAuthorityStatusSince
MC-271174Motor Carrier of Property (Except Household Goods)ActivegrantedMay 30, 1997

Latest action per authority, from FMCSA's authority history. For insurance filings and the full record, use the SAFER snapshot.