Great Western Transportation coordinates oilfield equipment transport nationwide for drilling contractors, oilfield service companies, and equipment suppliers moving frac tanks, drill pipe and casing, wellhead equipment, and other oil and gas gear between yards, suppliers, and active well sites. This freight is a distinct niche within flatbed and heavy-haul trucking: it is often oversize by dimension, heavy by weight, and destined for locations with limited or unpaved road access rather than a standard commercial dock. This page explains why oilfield equipment needs open-deck hauling, what trailer types apply to which equipment, and what Great Western needs to plan a shipment.
Why Oilfield Equipment Requires Open-Deck Hauling
Oilfield equipment rarely fits inside a dry van. Frac tanks, sections of drill pipe, wellhead assemblies, and workover rig components are built to work outdoors on a well pad, not to be palletized and loaded through a dock door, so this freight moves almost exclusively on flatbed, step deck, RGN, or specialized pipe trailers. A standard 500-barrel frac tank, for example, typically measures roughly 45 to 46 feet long, 8’6″ wide, and around 10 to 11 feet tall, and weighs approximately 28,000 to 30,000 pounds empty — dimensions and weight that already push toward the upper end of what a standard flatbed trailer can carry before cargo is even factored in.[1]
The market behind this freight is substantial and tied closely to U.S. drilling and completions activity. The North America oilfield services market was valued at roughly $102 billion in 2025, with the United States representing the dominant share of that spending, and industry estimates for the broader U.S. oilfield services segment range from the tens of billions into the $80 billion-plus range depending on how equipment and services are scoped.[2] That spending translates directly into freight volume: drilling rigs, frac spreads, and workover units are assembled from dozens of individual pieces of equipment that each have to be trucked to and from the well site, often on a tight schedule tied to a drilling or completion program. A single workover rig move can require 15 to 20 truckloads, while a large drilling rig with a full mud system can take 60 to 80 loads to relocate.[3]
Federal weight rules apply to this freight the same way they apply to any heavy load. The standard maximum gross vehicle weight on the Interstate System is 80,000 pounds, with axle weight further limited to 20,000 pounds on a single axle and 34,000 pounds on a tandem axle group under the federal bridge formula.[4] A loaded frac tank, casing bundle, or wellhead skid can meet or exceed these limits, which is why oilfield moves are planned around trailer configuration, axle spacing, and permits rather than treated like standard freight.
Equipment and Materials Commonly Hauled
- Frac tanks — typically 21,000-gallon (500 bbl) capacity, roughly 45–46 ft long, 8’6″ wide, and 10–11 ft tall when empty; hauled on a tank trailer chassis or a heavy-duty flatbed built for the tank’s fixed footprint.[1]
- Drill pipe, casing, and tubing — long, cylindrical sections typically bundled and hauled on a flatbed, step deck, or dedicated pipe trailer with stanchions to secure round stock; loads that overhang the trailer or exceed standard width often ship as oversize.[5]
- Wellhead equipment and Christmas trees — compact but heavy assemblies, generally crated and moved on a standard or heavy-duty flatbed.
- Mud pumps and power packs — skid-mounted units that are typically flatbed or step deck freight unless combined weight or height pushes them into RGN territory.[6]
- Separators and pressure vessels — often cylindrical and large in diameter; a separator of roughly 10 feet in diameter is already oversize by width before it is even loaded on a trailer, and most require an overwidth permit and pilot car escort on every state along the route.[5]
- Workover rig components and substructures — heavy, often skid-mounted or track-mounted units that generally require a lowboy or multi-axle RGN trailer because of their combined height and weight.[6]
- Pipeline stringing materials — large-diameter gathering and transmission line pipe moved in sequence to right-of-way access points, typically on flatbed or pipe trailers matched to the pipe’s diameter and length.[5]
Choosing the Right Trailer for Oilfield Freight
Trailer selection for oilfield equipment follows the same logic as other heavy-haul freight: it comes down to dimensions, weight, and how the load is packaged. Crated or skid-mounted equipment that stays within legal height and width — wellhead components, smaller pumps, tooling, and general oilfield supplies — typically moves on a standard 48- or 53-foot flatbed.[6] Federal law sets a floor under trailer length by preempting states from limiting truck tractor-semitrailer combinations to less than 48 feet on the National Network, which is why 48- and 53-foot flatbeds are the standard workhorse trailers for this freight.[7]
Once equipment is too tall, too heavy, or too irregular in shape for a standard flatbed, a step deck, lowboy, or RGN (removable gooseneck) trailer becomes the better fit. RGN trailers have a dropped center section, or “well,” that lowers the deck close to the ground, which both keeps tall equipment within legal height limits and, for equipment that can be driven or winched on, eliminates the need for a steep loading ramp.[8] Drilling rig substructures, workover rig components, and other heavy skid-mounted equipment commonly move this way. Long cylindrical loads — drill pipe, casing, tubing, and line pipe — are a category of their own and are generally matched to a flatbed, step deck, or dedicated pipe trailer built with stanchions to cradle round stock securely; loads with significant overhang beyond the trailer bed frequently require rear escort vehicles and pole-trailer permits depending on the states crossed.[5] Most states cap standard vehicle height between 13’6″ and 14′, with some allowing up to 14’6″ and Alaska permitting 15′, so the height of a loaded frac tank, separator, or rig component relative to those limits is one of the first things that determines trailer choice.[9]
Permits and Routing for Oversize Oilfield Loads
Oversize and overweight permits for oilfield equipment are issued at the state level, and requirements — including when a pilot car or escort vehicle is required — vary considerably from state to state. As a general industry reference point, the first escort requirement commonly starts around 12 feet of width, with a second escort typically required above roughly 14 to 16 feet wide, though the exact threshold differs by state; Arizona requires an escort starting at 11’1″ while Montana does not require one until 16’7″.[10] Height and length can trigger the same requirement, commonly in the range of 14 to 15 feet of height and 90 to 150 feet of length.[10] A large-diameter separator or pressure vessel, for instance, is frequently oversize by width alone and requires an overwidth permit and pilot car in every state the route crosses.[5]
Oilfield freight has an added layer that most commercial freight does not: the destination is frequently a well pad rather than a paved commercial address. Road conditions, gate width, turning radius, overhead clearance, and whether the access road can support a loaded heavy-haul trailer at all are practical factors that matter as much as the permit itself, particularly in remote basins where the final miles of the route may be unpaved lease roads. Because of that, route and road-condition review generally matters more for an oilfield shipment than it does for freight moving between two standard commercial docks, and Great Western reviews the specific states and site access along each route before a truck is dispatched rather than assuming a single national standard applies.
Planning Considerations for an Oilfield Equipment Shipment
A few details determine how smoothly an oilfield equipment shipment goes. Accurate dimensions and weight matter most: if a piece of equipment’s size or weight is reported incorrectly, the wrong trailer can be dispatched, a needed oversize or overweight permit can be missed, and the result can be a delay, extra charges, or in some cases a cancellation. Most long-haul trucks do not carry a forklift, so equipment that cannot be driven on and off under its own power needs a clear loading and unloading plan at both ends. A few days’ advance notice is generally preferable to a same-day request, since it gives more room to match the right truck and driver to the load and to a well-pad location that may have limited road infrastructure. Permits are determined based on accurate dimensions and weight ahead of dispatch, so that information needs to be locked in early rather than adjusted after a truck is already assigned. Declared cargo value should also be provided upfront so the shipment is matched to adequate insurance coverage — a standard truck typically carries $100,000 in cargo insurance, and additional coverage can be arranged for higher-value equipment. At delivery, a bill of lading is signed to document the equipment’s condition.
How Great Western Coordinates an Oilfield Equipment Shipment
Great Western Transportation coordinates oilfield equipment shipments by first reviewing the equipment’s dimensions, weight, and loading method to determine whether a flatbed, step deck, pipe trailer, or RGN is the right fit. Every truck and driver is vetted for proper insurance, strong safety ratings, and a clean compliance record before being matched to a shipment. When dimensions or weight require an oversize or overweight permit, that permit is arranged in advance of dispatch rather than after the fact. Pickup and delivery appointments are scheduled directly with the shipper and receiver, including coordinating access to well-pad or remote site locations where road conditions and gate access need to be confirmed ahead of time, and a bill of lading is signed at delivery to document the equipment’s condition. Great Western does not maintain a local terminal or fleet of specialized trailers; shipments are coordinated through qualified, vetted carrier partners matched to the specific equipment and route, and our team is available by phone for direct, personal service throughout the process.
Information Needed for an Accurate Oilfield Equipment Quote
- Pickup and delivery locations, including well-pad or lease road access details if applicable
- Equipment or material description (frac tank, drill pipe, wellhead assembly, mud pump, etc.)
- Exact length, width, and height, including any fittings, valves, or attachments
- Total weight
- Loading and unloading method (self-propelled, crane, forklift, ramp)
- Declared cargo value
- Pickup and delivery appointment windows
- Site access notes — road surface, gate width, overhead clearance, and any known road restrictions
- Any known permit or escort requirements along the route
Frequently Asked Questions About Oilfield Equipment Transport
What size trailer does a frac tank need?
Most 500-barrel (21,000-gallon) frac tanks measure roughly 45 to 46 feet long, 8’6″ wide, and 10 to 11 feet tall, and weigh approximately 28,000 to 30,000 pounds empty, so they typically move on a tank trailer chassis or heavy-duty flatbed sized to the tank’s footprint.[1]
Does hauling drill pipe or casing require a permit?
It depends on the load’s final length, width, and any overhang once the pipe is loaded and secured. Long pipe loads with significant overhang commonly require rear escort vehicles and pole-trailer permits in certain states, so exact dimensions should be confirmed before booking.[5]
Why does oilfield freight often need more route planning than standard freight?
Oilfield equipment frequently moves to well pads or remote lease locations rather than paved commercial addresses, so road surface, gate width, and overhead clearance along the final miles of the route matter in addition to standard oversize permit requirements.
What trailer is used for a drilling rig substructure or workover rig?
Heavy, skid-mounted rig components generally move on a lowboy or multi-axle RGN trailer, since the dropped deck section keeps the loaded height within legal limits and better distributes weight across additional axles.[6][8]
Does Great Western own its own oilfield trailers?
No. Great Western Transportation is a broker that coordinates oilfield equipment shipments through qualified, vetted carrier partners rather than operating its own fleet of flatbed, pipe, or RGN trailers.
Sources
- Frac tank dimensions, capacity, and weight specifications — Frac Tank Guide: Dimensions, Capacity, Uses & Rental Cost, Tank Authority and 500 BBL Frac Tank Trailer Specifications, ACE Industries
- North America and U.S. oilfield services market size — North America Oilfield Services Market, Market Data Forecast and Oilfield Services Market Size & Share Report, Grand View Research
- Truckload counts for workover and drilling rig relocations — Oil & Gas Equipment Transport, Freedom Heavy Haul
- Federal maximum gross vehicle weight and bridge formula limits on the Interstate System — 23 CFR § 658.17, e-CFR and FHWA Freight Management and Operations, Bridge Formula Weights
- Pipe, casing, and separator trailer requirements and oversize/overwidth considerations — Transporting Pipes on Trucks: Shipping on Flatbeds and More, Heavy Haul and Oversized and Pipe Trailers, ITI Trailers and Truck Bodies
- Trailer type selection for oilfield equipment, mud pumps, and rig components — Oil & Gas Equipment Transport, Freedom Heavy Haul and What is an RGN Trailer?, Heavy Equipment Transport
- Federal minimum trailer length preemption under the Surface Transportation Assistance Act — What Are the Federal Length Limits?, J. J. Keller Compliance Network and Federal Size Regulations for Commercial Motor Vehicles, FHWA
- RGN (removable gooseneck) trailer deck height and loading function — What is an RGN Trailer?, Heavy Equipment Transport
- State-by-state legal vehicle height limits — Compilation of Existing State Truck Size and Weight Limit Laws, Appendix A, FHWA Freight Management and Operations
- Pilot car and escort vehicle thresholds by state — Pilot Car / Escort Vehicle Laws and Requirements By State, Oversize.io and When Are Escorts/Pilot Cars Necessary For Oversized Freight Shipments?, ATS
Request an Oilfield Equipment Transport Quote
To get a quote for an oilfield equipment shipment, contact Great Western Transportation with the pickup and delivery locations, equipment or material description, dimensions, weight, and any known site access or road condition details for the pickup or delivery point. This information helps confirm the right trailer type and any permit requirements before a truck is dispatched.
Great Western Transportation
5000 Pleasanton Ave Ste 145, Pleasanton, CA 94566
Call Toll Free: 1-800-972-8484
