M-I Drilling Fluids LLC

Doing business as M-I Swaco

USDOT activeAuthority activeCarrier & Shipper · InterstateHazmat

USDOT312736
MC271174
LocationHouston, TX
Phone(281) 285-8500
Fleet37 power units · 25 drivers

M-I Drilling Fluids LLC (USDOT 312736, MC-271174) is an interstate motor carrier based in Houston, Texas with 37 power units and 25 drivers reported to FMCSA. Its USDOT number and operating authority are active. FMCSA records list 11 roadside inspections in the last 24 months.

Verification snapshot · FMCSA data as of Nov 11, 2026

Operating authorityActive · MC-271174Carrier, Shipper Liability insurance$750,000 on fileRequired: $1,000,000 Safety ratingSatisfactoryRated Jan 12, 2004 Out-of-service ordersNone on fileFMCSA out-of-service orders file Registration (MCS-150)Updated Jun 19, 202516 months ago Process agent (BOC-3)On fileTruck Process Agents of America, Inc.

Got a call or email from someone using this company’s name? Check the phone number or email against FMCSA records.

Operating authority

Status from the FMCSA Company Census File, November 11, 2026

Docket	Authority type	Status
MC-271174	Motor Carrier of Property (except Household Goods)	Active

First granted on April 1, 1994 · see full authority history.

Insurance

FMCSA licensing system (Motus), November 12, 2026

Liability (BIPD) required$1,000,000
Liability (BIPD) on file$750,000
Cargo insurance required / on fileNo / No
Bond required / on fileNo / No

Filings on file

Type	Insurer	Coverage	Effective
Liability (BIPD) BMC-91X	Travelers Property Casualty Company of America	$750,000	Jul 1, 2018

Insurance history: 3 past filings

Type	Insurer	Effective	Ended	Reason
Liability (BIPD)	National Union Fire Ins. Co. of Pitsbgh. Pa	May 9, 1997	Jul 1, 2018	Replaced
Liability (BIPD)	Northland Insurance Company	Jan 10, 1995	May 9, 1997	Cancel
Liability (BIPD)	Northland Insurance Company	Sep 30, 1994	Jan 10, 1995	Cancel

Process agent (BOC-3)

Truck Process Agents of America, Inc., Fargo, ND

Inspections and crashes

Last 24 months · FMCSA Vehicle Inspection File and Crash File

11
Inspections: 0.0%
Driver out-of-service: 9.1%
Vehicle out-of-service: 0
Crashes

Inspected most often in: Texas (7), North Dakota (2), Arkansas (1), Louisiana (1).

Most recent inspection on file: June 5, 2026.

FMCSA safety rating: Satisfactory (rated January 12, 2004)

Inspection and crash counts come from FMCSA records and are shown as reported. They are not a safety rating. A crash record does not mean the carrier was at fault. FMCSA has not rated a carrier unless a safety rating is listed. For FMCSA’s own data and its explanation, see the FMCSA SAFER Company Snapshot.

Out-of-service rates are calculated by CheckTrucking from inspection records (driver: levels I, II, III, VI; vehicle: levels I, II, V, VI). They are not FMCSA scores.

Authority history

FMCSA licensing records (Motus and legacy L&I) · migration-only status adjustments are not shown

October 27, 2026Involuntary suspension — Motor Carrier of Property (except Household Goods)
June 25, 2018Involuntary revocation — Contract carrier authorityDiscontinued revocation on July 13, 2018
June 5, 1997Involuntary revocation — Contract carrier authorityDiscontinued revocation on July 8, 1997
May 30, 1997Granted — Contract carrier authority; Motor Carrier of Property (except Household Goods)
October 1, 1994Involuntary revocation — Contract carrier authorityDiscontinued revocation on October 25, 1994
April 1, 1994Granted — Contract carrier authorityTransferred on May 30, 1997

Fleet and operations

From the company’s own registration (Form MCS-150), updated June 19, 2025

Power units: 37
Trucks: 29
Trucks owned: 1
Trailers owned: 14
Drivers: 25
CDL drivers: 15
Interstate drivers: 25
Miles traveled: 404,424 (2024)
Classification: Private property; Authorized for hire
Hazardous materials: Yes
USDOT registered: April 7, 1988
Address: 5950 N Course Drive, Houston, TX 77072
Phone (registered with FMCSA): (281) 285-8500

Cargo carried

General freight
Liquids / gases
Oilfield equipment
Chemicals
Commodities dry bulk
Oilfield service materials

Key facts

USDOT number 312736 was registered on April 7, 1988.
Operating authority MC-271174 was first granted on April 1, 1994.
The company last updated its FMCSA registration (Form MCS-150) on June 19, 2025.
It reported 404,424 vehicle miles traveled in 2024.
One insurance filing is on file, including Liability (BIPD) coverage with Travelers Property Casualty Company of America.
It had 11 roadside inspections in the last 24 months; 7 inspections recorded no violations.
Its most recent FMCSA safety rating is Satisfactory, issued on January 12, 2004.
Its process agent filing (BOC-3) is with Truck Process Agents of America, Inc..

Other carriers in Houston, TX

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