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：US11621789B2

公开(公告)日：2023-04-04

申请号：US17089517

申请日：2020-11-04

Applicant: CHEVRON U.S.A. INC. ,  CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Robert Kwan Meng Seah ,  Hailing An ,  Baha Tulu Tanju ,  Darmindra Arumugam

IPC: H04B13/02 ,  H01P3/16

Abstract: Magneto-quasistatic signals may be used to enable under-liquid communication between devices. A magneto-quasistatic signal transmitter of an under-liquid device may transmit a magneto-quasistatic signal conveying communication data through liquid. A magneto-quasistatic signal receiver of another under-liquid device may receive the magneto-quasistatic signal and extract the communication data from the magneto-quasistatic signal. The under-liquid device that received the magneto-quasistatic signal may use the communication data, store the communicate data, and/or relay the communication data (e.g., to another under-liquid device, to an above-liquid device) using another magneto-quasistatic signal.

公开(公告)号：US10119616B2

公开(公告)日：2018-11-06

申请号：US15093955

申请日：2016-04-08

Applicant: Chevron U.S.A. Inc.

Inventor： Baha Tulu Tanju

IPC: F16J15/34 ,  F04D29/10 ,  F04D29/06 ,  F04D29/58 ,  F04D29/60 ,  F16J15/00 ,  F04D15/00 ,  F04D27/00 ,  F04D29/12 ,  F16J15/16

Abstract: Disclosed is a device for regulating the compression force of a spring-spacer assembly provided in a mechanical shaft seal in a system including a motor and a pump or compressor. The device includes a spacer made from shape memory alloy, a spring in line with the spacer, and a heater proximate the spacer. When heated, the spacer contracts in length, resulting in a decrease in compression force. Also disclosed are systems and methods utilizing the device. The device is particularly useful when starting a pump or compressor to reduce friction in the mechanical seal. Existing mechanical seals can be easily retrofitted with the device.

公开(公告)号：US20170292611A1

公开(公告)日：2017-10-12

申请号：US15093955

申请日：2016-04-08

Applicant: Chevron U.S.A. Inc.

Inventor： Baha Tulu Tanju

IPC: F16J15/34 ,  F04D29/60 ,  F04D29/58 ,  F04D29/10 ,  F04D29/06

CPC classification number: F16J15/346 ,  F04D15/00 ,  F04D27/00 ,  F04D29/06 ,  F04D29/10 ,  F04D29/122 ,  F04D29/126 ,  F04D29/5806 ,  F04D29/60 ,  F05D2240/55 ,  F05D2260/20 ,  F05D2260/98 ,  F05D2270/303 ,  F05D2300/505 ,  F16J15/004 ,  F16J15/164 ,  F16J15/34 ,  F16J15/3452

Abstract: Disclosed is a device for regulating the compression force of a spring-spacer assembly provided in a mechanical shaft seal in a system including a motor and a pump or compressor. The device includes a spacer made from shape memory alloy, a spring in line with the spacer, and a heater proximate the spacer. When heated, the spacer contracts in length, resulting in a decrease in compression force. Also disclosed are systems and methods utilizing the device. The device is particularly useful when starting a pump or compressor to reduce friction in the mechanical seal. Existing mechanical seals can be easily retrofitted with the device.