Claudio Maria Molaschi

Alberto Maliardi

Angelo Calderoni

Paolo Ferrara

Mauro Favaretto

Sebastiano Burrafato

Alessio Nista

Paolo Dell'Aversana

Franco Bottazzi

Carlo Carniani

Germana Gallino

Raffaele Servodio

Alessandro Puliti

Guido Brusco

A monitoring and mapping system, including: at least four transceiver devices arranged to be applied at a predefined mutual distance along a casing pipe, each of the transceiver devices including: a tubular body arranged to be fit on the casing pipe, the tubular body having at a first end a first longitudinal portion, at a second end a second longitudinal portion and a third longitudinal portion interposed between the first and second longitudinal portions; a coil wound on the first longitudinal portion; a layer of elastomeric material which winds the third longitudinal portion; an electrode wound on the layer of elastomeric material; and a peripheral electronic control unit associated with the tubular body; the monitoring and mapping system further including a central electronic control and data acquisition unit configured to drive the peripheral electronic control units so as to selectively power the electrodes and the coils.

Monitoring and mapping system of the space-time distribution of formation fluids in a reservoir and a completion and production plant of a well for the extraction of formation fluids

System for cableless bidirectional data transmission in a well for the extraction of formation fluids comprising: a plurality of rods connected to each other in succession so as to form a rod string, which extends from the surface to the bottom of the well, the rod string being associable with a plurality of sensors configured for continuously detecting a plurality of parameters relating to the fluids circulating in the well and to the rock formation surrounding the well and/or to safety devices or other remote-controlled well instrumentation; a plurality of communication modules applied at predefined distances along the rod string and configured for the transmission of signals from and towards the bottom of the well; each of the communication modules including at least one metal plate.

System for cableless bidirectional data transmission in a well for the extraction of formation fluids

A safety valve assembly for extradition of hydrocarbons includes a valve body including a passage duct, configured to be traversed by a production and/or drilling line. The valve body includes housings for a punch and counter-punch, arranged diametrically opposite to one another with a common longitudinal axis substantially perpendicular to the longitudinal axis of the valve. The punch slides linearly in a controlled manner in the housing along the axis which intersects the longitudinal axis of the pipe, and the counter-punch slides linearly in a controlled manner in the housing along the axis which intersects the longitudinal axis of the pipe. The punch and counter-punch are configured to allow the counter-punch to slidingly receive the punch in its interior to create two different shearing planes. The counter-punch includes a hollow part to slidingly receive the section of tubular material and the punch, in the linear movement during the shearing operation.

Valve assembly and control method for extraction wells under emergency conditions

The emergency valve assembly () for extraction wells according to the invention comprises A) an external housing () and B) a rotating stopper (). The pass-through duct () is arranged for the passage of a production and/or drilling line arranged for containing and carrying, through at least one relative pipe (), extraction fluids such as, for example, petroleum, oil, water, sludge, rock debris and/or earth, natural gas, or other fluids extracted from an underground reservoir. The valve () also comprises a stopper drive (), arranged for actuating the rotating stopper () making it rotate so as to shear the production or perforation line passing through it, in particular shearing the pipe () and closing the pass-through duct (). The pass-through duct () has a minimum passage section having a diameter equal to or greater than seven inches. It provides an effective additional safety measure in the case of emergencies.

Emergency valve assembly for extraction wells, well equipped with said valve and process for managing an extraction well with said valve under emergency conditions

A process for constructing a well () for exploiting an oil or gas reservoir, comprising the following operations: (A) drilling a formation submerged by a water head, at least 3,600 meters deep or more, reaching the formation from the surface of the water with a drilling riser (), and a drilling tool which passes internally through the drilling riser; and evacuating through the drilling riser () at least one of the circulating drilling fluid, the oil or natural gas coming from the formations and the resulting drilling materials. The drilling riser () has an external diameter equal to or smaller than 17 inches and reaches a wellhead () having an internal diameter equal to or smaller than 18.75 inches, and positioned in correspondence with or close to the seabed submerged which covers the formation.

Process for constructing a well for exploiting a reservoir under a sea-bed or ocean-bed

Improved method for the drilling of the initial phase of deep water oil wells with an underwater well head consisting in the positioning and cementation of the conductor pipe and anchorage casing by means of a single drilling phase. A tapered hole (with a double diameter) is drilled using a drill string consisting of a motor driven pilot bit and a reaming bit.

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Crema-Cremona, Italy

Claudio Maria Molaschi