Field Operations

Crude Oil by Truck: Loading, Hauling and Unloading on the Lease

Trucks haul a lot of crude, and most of it starts on a lease with no pipeline hookup. A tanker truck is the connection between the tank battery and the delivery point, and the move only works when the pumper, the driver, and the receiving party run the same routine. This article covers the trip end to end and the paperwork that makes the load count.

Loading the truck at the battery

Loading starts with gauging. Before the truck backs in, the pumper measures the tank: oil level against the tank table, water cut, temperature, and BS&W. That reading is the custody transfer number, the volume you get paid on, so it is worth doing slow. See tank gauging and custody transfer for the full method.

Then the hookup. The driver checks the compartment valves, the internal emergency valves, and the bottom loading line before anything opens. A valve that sticks open is how a compartment gets overfilled, and an overfilled compartment is a spill on the pad.

Overfill is the everyday risk. A compartment holds a set number of barrels, and the tank has no room for what does not fit. Watch the gauge, know each compartment's capacity, and stay at the loading point. Most spills happen in the last few inches of a fill.

Static is the other risk. Crude is a flammable liquid, and pumping it through a hose builds static charge. Bond the truck to the tank before you open anything and keep the bond until the lines are disconnected. Ground the truck at the rack. It is the difference between a load and a fire.

Loading and unloading of hazardous materials by truck falls under 49 CFR Part 177, linked below.

On the road: what the driver and operator carry

Crude oil is a Class 3 flammable liquid, so a loaded truck is a hazmat move. The truck carries the right placards, and the driver holds a commercial license with a hazmat endorsement. The operator keeps copies of the driver's qualifications and endorsements on file; see driver qualification files for oilfield trucking.

Two sets of rules apply on the road. General driving rules sit in 49 CFR Part 392, and the extra hazmat rules in 49 CFR Part 397 cover routing, parking, and behavior around the load. For a lease driver: no smoking around the truck, no parking the loaded rig where it does not belong, and follow the routing rules. See hazmat transportation for oilfield operators for more.

Hours of service apply too: a daily driving limit, a required off-duty rest period, an on-duty window, all tracked in the electronic log. A driver who works a long day and then drives a loaded truck is the accident the rules are trying to prevent. Hours of service for oilfield trucking covers the limits and the oilfield exemptions that do and do not apply.

Unloading at the delivery point

Unloading is loading in reverse, slower. The driver and the receiving side check the connection first: the right tank, the right line, the right fittings, wheels chocked. Match the hose to the connection before any valve opens, and confirm the receiving tank's valve lineup.

Pressure and vapor get attention during the drop. Open the vapor return so the tank does not pressure up, and never push against a closed valve. Backflow is the silent problem: product moving the wrong way when the receiving tank sits higher or the line is full. Watch the meter and the sight glass, not the phone.

The driver stays with the truck during the transfer. Federal rules require a loaded hazmat truck to be attended, and the practical reason is the same: a hose failure needs a hand on it in seconds.

At the end of the drop, the numbers get written: meter before, meter after, volume delivered, who received it. The driver and the receiving party sign the same document. That document is the load.

Who signs what

Every truckload of crude generates two pieces of paper. The bill of lading is the shipping document: what is in the truck, where it came from, where it is going. The field ticket is the measured record: gauge at pickup, meter at delivery, volumes, water cut, names on both ends.

The field ticket is the document that turns into money. It flows to the operator, the transporter, and the buyer, and becomes the invoice. If the ticket is missing a signature or a reading, someone has to chase it later, and the load sits unpaid. The whole path is worth reading in the field ticket to invoice workflow.

Signatures matter in order: the pumper signs the gauge reading at the lease, the driver signs what he loaded, and the receiving party signs what he accepted. The ticket is only as good as the last signature on it; nobody signs a blank ticket and nobody signs for a load they did not measure.

Software like OpsFlo keeps the load ticket attached to the dispatch record, so the signature and the reading do not get lost between the lease and the office.

Keeping the haul honest

Crude hauling is built on trust, and trust is backed by seals and numbers. Seals go on the truck at the lease and come off at the delivery point. Record the seal number on the ticket at pickup, check it at the drop, and note any seal that is missing or broken before the load is accepted.

Load tickets get audited the same way tank gauges do. Reconcile the tickets against the meter readings and the tank gauges on a schedule, not when something looks wrong. Watch the volumes, the water cut, and the gravity. A ticket that does not match the tank is not a small discrepancy; it is a load that has to be explained.

Audits catch the slow leaks too: a driver who short-loads and sells the difference, a gauger who rounds down, a ticket that never gets entered. The controls are simple: seal numbers on every load, tickets reconciled against meters, and a record that follows each truck from lease to delivery.

Sources and further reading

• eCFR 49 CFR Part 397: Driving of commercial motor vehicles carrying hazardous materials
• eCFR 49 CFR Part 177: Carriage of hazardous materials by public highway
• eCFR 49 CFR Part 392: Driving of commercial motor vehicles