Shell Oil Comapny

Pieter Karel Anton Kapteijn

Wilhelmus Hubertus Paulus Maria Heijnen

Gustaaf Louis Van Wechem

Paul Dirk Schilte

Stephen Richard Braithwaite

Josef Guillaume Christoffel Coenen

Johan Dirk Jansen

Michael John Betts

Peter Oosterling

Dirk Roelof Brouwer

Pleun Marinus Van Der Sman

Cornelis Petrus Josephus Walthera Van Kruijsdijk

Renato Markovinovic

A method is disclosed for controlling production of oil and/or gas from an underground reservoir by means of a closed loop production control system, in which: an assembly of monitoring sensors () monitor the physical properties of hydrocarbon and other fluids within the reservoir; a plurality of high order and/or low order mathematical reservoir models () calculate each an estimate of the physical properties of hydrocarbon and other fluids in the hydrocarbon containing formation and in the wells; the mathematical reservoir models () are iteratively updated in response to data provided by the assembly of sensors such that any difference between the properties monitored by the assembly of sensors and those calculated by each of the reservoir models is minimized; an optimal mathematical reservoir model () or an optimal combination thereof is selected during at least one updating step for which an averaged difference between the calculated properties and the properties monitored by the assembly of sensors () is minimal; and an optimization algorithm () controls, on the basis of data provided by the selected optimal mathematical reservoir model or optimal combination thereof, production control assemblies of a plurality of wells which traverse the formation.

Closed loop control system for controlling production of hydrocarbon fluid from an underground formation

A steerable soil penetration system having a steerable penetration head, which compacts and does not cut away the surrounding soil and which is connected to an elongate flexible tubing such that the orientation of the penetration head can be varied relative to the tubing. The elongate tubing and/or a downhole hammer or tractor pushes the penetration head through the subsurface formation. Preferably the tubing is surrounded by a narrow annulus so that buckling of the tubing is inhibited and the tubing protects the pierced hole against caving in. Optionally the tubing is circumferentially expanded after completion of the piercing process thereby increasing the width of the pierced hole and providing a permanent hole lining.

Steerable soil penetration system

A device for sealing off an opening through the wall of a well tubular, which device comprises a tubular spacer having an outer diameter allowing the spacer to be arranged in the well tubular, a first seal collar assembly and a second seal collar assembly arranged opposite ends of the tubular spacer, each seal collar assembly comprising an activator ring and an annular seal collar, the activator rings being interconnected by a cylindrical system of shape memory alloy which system contracts when the temperature of the cylindrical system reaches the transition temperature of the shape memory alloy, and wherein each annular seal collar is arranged so as to be compressed against the inner surface of the well tubular upon contraction of the cylindrical system of shape memory alloy.

Sealing off openings through the wall of a well tubular

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Rijswijk, Netherlands

Pieter Karel Anton Kapteijn