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Frac Water Heating

Free Heating Cost Audit: What PRB Operators Should Review Before Fall Programs Lock

A heating cost audit helps PRB operators compare fuel source, BTU output, runtime, and total program cost before vendor lists close for fall and winter frac programs.

Jason AsayOwner & Operator

Free Heating Cost Audit: What PRB Operators Should Review Before Fall Programs Lock

Before a fall frac program locks, operators usually compare vendors by rate. That is the easy number.

But if frac water heating is part of the program, rate is not enough. Heating cost depends on more than the equipment quote. It depends on barrel volume, water temperature, fuel source, BTU output, runtime, efficiency, and whether the heater can hold performance on the fuel you plan to run.

That is why a heating cost audit should happen before the vendor list closes. Not after equipment is committed. Not after cold weather shows up. Not after propane becomes the default because no one ran the numbers. Before.

What a heating cost audit is

A heating cost audit is a practical review of the fuel and equipment math behind a frac water heating plan. It does not need to be complicated.

The point is to answer one question: What is this heating program actually going to cost once fuel, output, and runtime are included?

That answer gives completions teams a better number than day rate alone. A proper audit looks at:

Once those numbers are on the table, the operator can compare the current plan against a better fuel strategy.

Why this matters before August or early September

Most of the PRB programs we have worked on locked their vendor lists in August or early September -- not October. That timing matters.

By October, the plan is often already set. Equipment may be committed. Procurement may already be working off assumptions. Fuel strategy may already be baked in.

If propane was assumed by default, the operator may not know whether natural gas could reduce the total program cost. If the vendor’s natural gas output was never checked, the operator may not know whether those savings would hold in the field.

The audit belongs before those decisions harden. That is when there is still time to compare options.

What operators should review

A good heating cost audit starts with the field reality, not the bid packet.

1. Barrel volume

How much water needs to be heated? Volume is where small cost differences get big fast. Heating 50,000 barrels and heating 800,000 barrels are not the same economic problem. The more barrels involved, the more fuel source matters.

2. Temperature rise

What temperature is the water starting at, and where does it need to be? A small temperature rise is a different heating load than cold water moving through a winter program. Without this number, the output requirement is guesswork.

3. Fuel source

What fuel is available on location? Natural gas, propane, and diesel do not create the same cost profile. If natural gas is available and the equipment can use it efficiently, the savings can be meaningful. But availability alone does not solve the problem. The heater has to perform on that fuel.

4. Output on the actual fuel

This is one of the most important questions in the audit. A unit may carry a strong BTU rating on propane. That does not mean it will deliver the same number on natural gas.

In our experience competing for the same programs, units converted from propane to natural gas often deliver 25-30% less output than their rated capacity. That is not a knock. It is an engineering reality. If the job is going to run natural gas, the operator needs to know what the unit actually delivers on natural gas under load.

5. Runtime

How long does the unit need to run to heat the required volume? Runtime affects fuel cost, crew planning, maintenance exposure, and whether the heating plan can keep pace with operations. If output drops, runtime usually goes up. That can change the cost picture.

6. Fuel burn

What is the expected fuel burn at the required output? This is where day rate comparisons fall short. A lower equipment rate can lose quickly if the fuel burn is high or the fuel source is expensive.

7. Backup options

What happens if fuel availability changes? A good heating plan should not depend on one perfect scenario. Field conditions move. Fuel supply changes. Weather changes. The audit should account for backup fuel options before the job starts.

8. Response plan

Who answers when something changes? A heating plan is only as strong as the response behind it. If the job runs around the clock, the decision chain needs to work around the clock.

What operators get from the audit

The value of a heating cost audit is not a prettier spreadsheet. It is clarity.

Operators should come away knowing:

That can change the buying decision. Not because the day rate changed. Because the total cost became clearer.

Why fuel cost should not be reviewed after the fact

Once the job is underway, the fuel cost is already happening. If the program is burning more expensive fuel than necessary, the invoice will show it. If the heater loses output on natural gas, the runtime will show it. If the unit cannot switch fuel cleanly, the schedule will feel it.

At that point, the operator may still be able to adjust. But the best time to fix the heating plan is before the equipment is chosen. That is the point of the audit. It brings the fuel math forward before procurement locks the wrong assumption into the program.

A simple example

On one program, heating 800,000 barrels created a fuel comparison that looked roughly like this:

Same heating need. Same job objective. Different fuel plan.

The exact numbers will change by basin, fuel pricing, water temperature, target temperature, runtime, and site conditions. But the principle is the same: Fuel source can move more money than day rate. That is why the audit matters.

When to run the audit

Run it before the vendor list closes. For PRB fall and winter work, that often means before August or early September. Do it while there is still time to:

Waiting until October usually means fewer options.

What information is needed

A basic heating cost audit does not need a full engineering package to start. It usually begins with:

From there, the numbers can be tightened. The goal is not perfection on the first pass. The goal is to find out whether the current plan deserves a closer look.

Run the fuel math before the list closes

Frac water heating is too expensive to buy on day rate alone. The equipment rate matters, but it is not the full number. Fuel source, output, runtime, and field performance can change the total cost fast.

A heating cost audit gives operators a cleaner view before they commit. If the current plan is sound, the audit will show it. If it is carrying avoidable fuel cost, it is better to find that out before the vendor list locks.

Building a PRB fall or winter program?

Complete Heat Frac Service runs heating cost audits for operators comparing fuel cost, BTU output, and total program cost before equipment is committed. If you are building a Powder River Basin fall or winter program, run the numbers before August or early September.

Jason Asay
Complete Heat Frac Service
307-217-1494

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Ready to talk frac water heating?

Call Jason for a quote: 307-217-1494