公开(公告)号：US20230366286A1

公开(公告)日：2023-11-16

申请号：US18246573

申请日：2021-09-24

Applicant: ENI S.P.A.

Inventor： Giorgio RICCI MACCARINI ,  Roberto POLONI ,  Davide TAGLIABOSCHI ,  Andrea BIONDI

IPC: E21B33/06

CPC classification number: E21B33/063

Abstract: A safety valve for wells for the extraction of hydrocarbons is described which allows the cutting of the tubular drilling material possibly present in the safety valve and the closure of the well with a hydraulic seal, allowing the subsequent application of appropriate intervention plans to control the well in case the BOPs are not effective. A safety valve for wells for the extraction of hydrocarbons is described which is able to perform the action of cutting the tubular material with a higher capacity than conventional BOPs, considering the worst conditions of compound stresses at the wellhead, which are not contemplated by such BOPs today. In particular, the safety valve is capable of cutting/shearing a wide range of tubular elements in its inside.

公开(公告)号：US20210404281A1

公开(公告)日：2021-12-30

申请号：US17288202

申请日：2019-10-23

Applicant: ENI S.P.A.

Inventor： Gilberto TOFFOLO ,  Andrea BIONDI ,  Paolo FERRARA

IPC: E21B31/00

Abstract: An unstuck system of stuck drill pipes of a drill string of a drilling apparatus adapted to drilled wells to extract fluids or mud includes a torsion coupling system adapted to disconnect an upper portion from a bottom portion including the stuck drill pipes of the drill string and to transfer a rotation to the unstuck system. The unstuck system includes at least an axial forced vibration generator including at least one axially movable element adapted to generate at least a vibration which is propagated to pipes of a portion free from being stuck, where the induced vibrations fall within a band of induced frequencies near or corresponding to a resonance frequency of the portion free from being stuck.

公开(公告)号：US20170314355A1

公开(公告)日：2017-11-02

申请号：US15520629

申请日：2015-10-19

Applicant: ENI S.p.A.

Inventor： Paolo FERRARA ,  Giuseppe DE GRANDIS ,  Andrea BIONDI

IPC: E21B29/08 ,  E21B34/04 ,  E21B33/064 ,  E21B34/16 ,  E21B33/035

Abstract: A safety valve for extraction wells, configured to be installed on a well head and to enclose a tubular material portion inserted inside the well. The tubular material is internally hollow to contain and transport substances extracted from the well. The safety valve includes: a central hole through which the tubular material passes; a blocking system configured to keep the tubular material to be cut fixed with respect to the safety valve; a cutting and closing group configured to cut and close the well under certain operative conditions; and a sealing mechanism configured to effect watertight closing of the well, after the cutting. The cutting and closing group includes a hole saw housed in a respective chamber of the cutting and closing group, rotated by a motorized actuator, and configured to move in a controlled mode along a substantially orthogonal direction with respect to a development direction of the well.