Tieback
Products

Six products. One engine.

Start with Tree. The others switch on from the same engine: reduced well–flowline–riser models identified per well; extended and unscented Kalman filters and constrained moving-horizon estimation with holdup bounds.

Tree

Tree pressure. From topside.

Subsea tree pressure estimated from topside choke pressure and temperature, choke opening and gas-lift rate, with an interval.

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Slug

The slug, before the separator.

Severe slugging flagged early from the estimated riser state, with the lead time measured at a frozen false-alarm rate.

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Choke

The largest stable opening.

The largest stable choke opening per well, from the linearised identified model, with its uncertainty.

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Bank

Two observers, one answer.

Extended and unscented Kalman estimates over parameter draws, side by side, with their bands and their disagreement.

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Lift

What more gas-lift would do.

A what-if on gas-lift rate from the fitted model, labelled unverified.

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Hydrate

The margin to the curve.

A thermal model and the hydrate curve along the line.

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Products · Tieback