公开(公告)号：US20160298393A1

公开(公告)日：2016-10-13

申请号：US15029926

申请日：2014-10-16

Applicant: ENI S.P.A.

Inventor： Claudio MOLASCHI ,  Alberto MALIARDI ,  Paolo FERRARA

IPC: E21B7/12 ,  E21B10/00 ,  E21B33/043 ,  E21B43/01 ,  E21B33/038 ,  E21B17/01

CPC classification number: E21B7/12 ,  E21B10/00 ,  E21B10/28 ,  E21B17/01 ,  E21B17/1078 ,  E21B33/038 ,  E21B33/043 ,  E21B33/064 ,  E21B43/01

Abstract: A process for constructing a well (1) 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 (7), and a drilling tool which passes internally through the drilling riser; and evacuating through the drilling riser (7) 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 (7) has an external diameter equal to or smaller than 17 inches and reaches a wellhead (3) 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.

Abstract translation: 一种用于构造用于开采油气藏的井（1）的方法，包括以下操作：（A）钻探由水头浸没至少3,600米深或更深的地层，从表面到达地层 的钻井立柱（7），以及钻孔工具，其通过钻孔立管内部通过; 并且通过钻井提升管（7）排出来自地层的所述循环钻井液，油或天然气中的至少一种以及由此产生的钻井材料。 钻井立管（7）具有等于或小于17英寸的外径，并且到达具有等于或小于18.75英寸的内径的井口（3），并且被定位成对应于或靠近被覆盖的海床， 形成。

公开(公告)号：US20210324731A1

公开(公告)日：2021-10-21

申请号：US17273871

申请日：2019-09-13

Applicant: ENI S.P.A.

Inventor： Axel TUROLLA ,  Paolo FERRARA

IPC: E21B47/06 ,  E21B47/16 ,  G01V1/30

Abstract: A method for estimating an anomalous pore pressure value at depth level of a first discontinuous interface between a first geological formation and a second geological formation to be drilled by means of a drilling apparatus comprising at least one bit, where said method is implemented by means of a system comprising at least one electro-acoustic transducer (20) mounted with said bit, at least one memory for containing observable data and at least one control processor for processing observable data contained in said at least one memory, where said at least one processor controls transmitting a signal transmitted at a given frequency, said at least one electro-acoustic transducer receives a received signal that said at least one processor records in said at least one memory, comparing it with pre-loaded observable data in said at least one memory and estimating the value of the anomalous pore pressure of the first discontinuous interface.

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.

公开(公告)号：US20150361790A1

公开(公告)日：2015-12-17

申请号：US14761168

申请日：2014-01-14

Applicant: ENI S.P.A.

Inventor： Paolo FERRARA ,  Axel TUROLLA ,  Massimo ZAMPATO

IPC: E21B49/00 ,  G01V1/48 ,  E21B47/06 ,  E21B10/42 ,  E21B47/022

CPC classification number: E21B49/006 ,  E21B10/00 ,  E21B10/42 ,  E21B47/02208 ,  E21B47/06 ,  G01V1/48 ,  H04R17/00

Abstract: A method for revealing anomalous discontinuity interfaces in pore pressures in non-drilled geological formations and an implementing system. The method includes generating, by an electroacoustic transducer, first pressure sound waves and receiving a reflected signal of such first pressure sound waves generated by at least one discontinuity interface due to passage from first to second different geological formations situated successively along an emission direction of the electroacoustic transducer; calculating speed of the first pressure sound waves generated and distance between the electroacoustic transducer and the at least one discontinuity interface; generating, by the electroacoustic transducer, second pressure sound waves and revealing the electrical impedance induced at terminals of the electroacoustic transducer; estimating, based on the electrical impedance revealed, plural parameters characteristic of the first and second geological formation; estimating pressure of the second geological formation based on the sound speed and distance calculated and the plural characteristic parameters estimated.

Abstract translation: 揭示非钻孔地质构造孔隙压力异常不连续界面的方法和实施体系。 该方法包括通过电声换能器产生第一压力声波并且接收由至少一个不连续界面产生的这样的第一压力声波的反射信号，这是由于从第一到第二不同的地质构造物沿着沿着发射方向 电声换能器; 计算产生的第一压力声波的速度和电声换能器与至少一个不连续接口之间的距离; 通过电声换能器产生第二压力声波并且显示在电声换能器的端子处感应的电阻抗; 基于所显示的电阻抗，估计第一和第二地质构造的特征的多个参数; 基于计算的声速和距离估计第二地质构造的压力和估计的多个特征参数。