公开(公告)号：US20240117728A1

公开(公告)日：2024-04-11

申请号：US18045038

申请日：2022-10-07

Applicant: Chevron U.S.A. Inc.

Inventor： Baha Tulu Tanju ,  Matthew R. Kramer ,  Antonio C.F. Critsinelis ,  Sid A. Mebarkia ,  Simona Duplat ,  Joseph E. Patterson ,  Jeffrey E. Mychaskiw

IPC: E21B47/07

CPC classification number: E21B47/07 ,  E21B2200/20

Abstract: The present embodiments disclose a system and method for generating a predictive model to detect leak in undersea pipes. The system includes an administrator processor and one or more pipe sections. The method proceeds with observing changes in pressure, generating a predictive model configured to determine if a leak has occurred, and closing one or more pipes responsible for the leak.

公开(公告)号：US10371288B1

公开(公告)日：2019-08-06

申请号：US16166613

申请日：2018-10-22

Applicant: Chevron U.S.A. Inc.

Inventor： Antonio Critsinelis ,  Sid A. Mebarkia ,  Kale Z. Lundeen

IPC: F16L1/24 ,  F16L3/16 ,  F16L1/12 ,  E21B43/01

Abstract: Disclosed are an apparatus and method for supporting a portion of a pipeline for conveying produced fluids in a subsea environment to facilitate movement of the portion of the pipeline over a seabed in response to stresses on the pipeline. The portion of the pipeline is supported on a rigid support structure having rotatable components that rotate about an axle attached to the rigid support structure such that the rigid support structure and the portion of the pipeline can move over the seabed. The apparatus and method eliminate the need for costly mud mats or suction piles to accommodate movement in the subsea pipeline and prevent pipeline walking. By facilitating movement of the portion of the pipeline, lateral deformation and axial displacement of the portion of the pipeline can be reduced or eliminated.

公开(公告)号：US09662690B2

公开(公告)日：2017-05-30

申请号：US14331894

申请日：2014-07-15

Applicant: Chevron U.S.A. Inc.

Inventor： Parsinejad Farzan ,  Antonio C. F. Critsinelis ,  Sid A. Mebarkia

IPC: F16L55/40 ,  B08B9/055 ,  F16L55/44 ,  F16L101/12 ,  F16L101/30

CPC classification number: B08B9/055 ,  B08B9/0557 ,  F16L55/44 ,  F16L2101/12 ,  F16L2101/30

Abstract: Disclosed is a pig assembly for maintaining a multi-diameter functional line with a large range of diameter variation for conveying fluid. The pig assembly includes a central shaft having a first shaft end and a second shaft end and at least one cylindrical pig body coaxially mounted on the central shaft. Attached to the at least one pig body are a plurality of arms capable of moving between an extended position radiating from the at least one pig body and a retracted position within the at least one pig body. Each of the pluralities of arms includes a spring to enable each arm of the plurality of arms to move into the extended position and to store potential energy when the arm is in the retracted position, and a roller to enable rolling contact between the pig assembly and an interior of a functional line during movement of the pig assembly within the functional line. The pig assembly further includes at least one set of a plurality of scraper elements located along the central shaft capable of rotating about the central shaft to move between an opened position and a collapsed position. A method for maintaining a multi-diameter functional line using the pig assembly is also disclosed.