Crude pipeline throughput increase with DRA CDR2081

The crude line connected a coastal terminal with a refinery and was constrained by the capacity available under its normal pumping arrangements. The operator's background records showed that starting an additional pump increased delivery only modestly while bringing outlet pressure close to the line's design limit. The team wanted to evaluate a chemical route to additional capacity within the existing infrastructure.

This made the test objective more specific than simply observing a flow increase. Cestoil and the operator agreed on the pumping configuration, treatment limits and performance assessment before the trial. The relevant question was whether the treated line could deliver more under the agreed operating arrangement, with the pressure response and chemical feed recorded alongside the flow.

CDR2081 is Cestoil's polyolefin drag reducer. Its role in the trial was to reduce frictional resistance during turbulent crude flow, allowing the operator to investigate higher delivery with the existing pumping system. The product was assessed on the actual port-to-refinery route, using the operator's measurements and the agreed technical framework.

The trial held the pump-outlet valve at a fixed position. That reduced one source of variation in the comparison and made the operating record easier to interpret. Pump configuration, crude properties and injection conditions still formed part of the application basis. The report therefore preserves those details rather than treating the final percentage as independent of the system in which it was measured.

An earlier attempt was interrupted by an injection-pump seal problem. Cestoil returned with the pump repaired before the documented trial proceeded. The event underlines a practical part of field service: the injection equipment must deliver the intended chemical feed reliably before a pipeline performance result can be meaningfully assessed.

During the trial, the team recorded cumulative chemical injection, hourly flow, outlet pressure and valve position. The operator calculated when treated crude would fill the line and assessed the developed treatment response after that point. This separated the initial injection period from the condition in which the full line contained treated crude. Receiving-tank space limited the trial duration, making terminal and refinery coordination part of the test planning.

Outlet pressure fell between the start of injection and the developed treatment response. This start-to-full-effect pressure comparison uses a different baseline from the hourly-flow comparison with the following day's untreated readings. The full report sets out the sequence so that the changes can be read without implying that every headline uses the same pair of observations.

The operator's capacity assessment also placed the treated two-pump result above its stated background capacity for three-pump operation without treatment. This suggests a useful pumping option for further evaluation. It does not establish a measured electrical-energy saving: pump-power data and a comparison at equivalent delivery requirements would be needed to quantify that benefit.

The field record offers several practical lessons: verify the injection system before testing, agree on the pump and valve arrangement, allow for line-fill time and reserve adequate tank space at the receiving end. Those steps help ensure that a promising chemical response can be evaluated under a coherent operating plan.

A site-specific commercial assessment would combine the value of additional deliverable crude with additive consumption, pump power, operating hours and any alternative supply-route costs. The trial summary provides capacity and pressure evidence but does not quantify a financial saving. Pipeline profile, crude density and viscosity, pump curves and representative flow-pressure records are useful inputs for developing a comparable evaluation with Cestoil.