When a producer sends gas to a processing plant, someone has to decide how the value of the residue gas and the extracted liquids gets split. A percentage-of-proceeds contract, almost always called a POP deal, answers that question with a simple principle: the producer takes a share of the money the plant realizes from selling the products, not the products themselves. This guide explains how a POP arrangement pays out, how it differs from keep-whole and fee-based deals, and why a producer's own measurement is the check that keeps the plant's reported proceeds honest.
Percentage-of-Proceeds (POP) in one line: A percentage-of-proceeds (POP) contract is a gas-processing arrangement in which the producer receives an agreed percentage of the proceeds the plant earns from selling the residue gas and the natural gas liquids recovered from the producer's gas, rather than receiving the physical residue and liquids. The plant keeps the remaining percentage as its compensation for gathering, processing, and marketing, so the producer and the plant share market risk together.
Under a POP contract the plant takes custody of the producer's gas, processes it, and sells the two products that come out - the residue gas that meets pipeline specification and the liquids stream, which may be sold as a mixed barrel or split into component products. The producer's payment is a stated percentage of the proceeds from those sales. A deal might, for example, assign one share of residue proceeds and a different share of liquids proceeds, so the split need not be identical for gas and for liquids. Whatever the percentages, the producer is paid in dollars tied to what the products fetched, not in molecules.
This structure ties the producer's revenue directly to two things: the volumes recovered and the prices those volumes sold for. If prices rise, both the producer and the plant earn more; if prices fall, both earn less. Because the producer never takes the physical product, there is no marketing burden and no need to arrange transportation or find a buyer - the plant does that and shares the result. The tradeoff is that the producer is trusting the plant's reported volumes and realized prices, since those two inputs, multiplied by the agreed percentages, are the entire settlement.
The three common processing structures divide risk very differently, and a POP is the middle option. In a fee-based deal the producer pays the plant a set fee per unit processed and keeps all the product value; the plant carries no commodity price exposure and simply earns its fee whether prices are high or low. In a keep-whole deal the plant keeps the liquids value but must return gas of equal energy to the producer, which loads the plant with the risk that liquids may be worth less than the gas it has to replace. A POP sits between these poles by sharing both the upside and the downside of product prices between the two parties in fixed proportions.
That shared exposure is why producers and plants choose POP in particular market conditions and relationships. A producer who wants some participation in strong liquids prices, without taking on marketing or the full commodity risk of a fee deal, is a natural fit. A plant that wants revenue linked to product value rather than a flat fee, and is comfortable carrying part of the price risk, finds POP attractive too. The key contrast to hold onto is that under fee-based the producer keeps the product and pays cash out, under keep-whole the producer gets energy-equivalent gas back plus sometimes a liquids share, and under POP the producer gets a slice of the sales proceeds and never touches the product.
Because a POP settlement is entirely a function of measured volumes and realized prices, the producer's leverage comes from being able to verify the volume side independently. The producer usually controls or has access to the field and inlet measurement - what left the wells and what entered the plant - and that measurement is the anchor against which the plant's reported recoveries and proceeds can be tested. If the plant reports selling less residue or fewer liquids than the inlet energy and composition would imply, the discrepancy is worth a question, and only good measurement makes the question possible.
This is where continuous, trustworthy field data changes the balance of information. Flow computers and gas analyzers at the wellhead and gathering points establish how much gas and what quality the producer delivered, and a SCADA layer preserves that record over time. A cloud SCADA platform such as Merobix keeps the producer's own inlet and field measurement in a shared, timestamped history that the producer controls, so when a monthly proceeds statement arrives, the delivered volumes and composition are already documented independently of the plant's numbers. That does not rewrite the contract, but it turns the producer from a passive recipient of a statement into a party that can reconcile the statement against its own metering and raise a specific, defensible objection when the two disagree.
Cash. Under a percentage-of-proceeds contract the plant sells the residue gas and the natural gas liquids and pays the producer an agreed percentage of the proceeds. The producer never takes the physical product and does not have to market it, transport it, or find a buyer - the plant handles all of that and shares the money it realizes.
In a keep-whole contract the plant keeps the liquids value but must return gas of equal energy to the producer, carrying the risk that liquids may be worth less than the gas it must replace. In a POP contract the producer instead receives a percentage of the proceeds from selling both the residue gas and the liquids, so the two parties share price upside and downside rather than the plant bearing the makeup obligation alone.
By reconciling the plant's reported volumes against the producer's own field and inlet measurement. Since a POP settlement is volume times price times an agreed percentage, independent metering of what the producer delivered lets it check whether the reported recoveries and sales are consistent with the gas that actually entered the plant. Continuous SCADA measurement gives the producer a documented, timestamped record to compare against each monthly statement.
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