WO2019035747A1 - Pipeline fittings with sight glass - Google Patents

Pipeline fittings with sight glass Download PDF

Info

Publication number
WO2019035747A1
WO2019035747A1 PCT/SA2017/050006 SA2017050006W WO2019035747A1 WO 2019035747 A1 WO2019035747 A1 WO 2019035747A1 SA 2017050006 W SA2017050006 W SA 2017050006W WO 2019035747 A1 WO2019035747 A1 WO 2019035747A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipeline
pig
stuck
fittings
valves
Prior art date
Application number
PCT/SA2017/050006
Other languages
French (fr)
Other versions
WO2019035747A9 (en
Inventor
Ali ALMESHAL
Original Assignee
Almeshal Ali
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Almeshal Ali filed Critical Almeshal Ali
Priority to PCT/SA2017/050006 priority Critical patent/WO2019035747A1/en
Publication of WO2019035747A1 publication Critical patent/WO2019035747A1/en
Publication of WO2019035747A9 publication Critical patent/WO2019035747A9/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
    • F16L55/46—Launching or retrieval of pigs or moles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
    • F16L55/48—Indicating the position of the pig or mole in the pipe or conduit

Definitions

  • This patent application is proposing to design, manufacture and fabricate a special fitting (spools) with butt-weld or flange joints to be installed upstream and downstream the mainline valves, fittings and sharp bends where the probability of encountering stuck pig case is high.
  • This special spool will be made from the same materials of the pipeline with addition of a sight glass.
  • the sight glass shall be made of materials that are compatible to sustain the applied stresses and external and internal environment of the pipeline. To my knowledge, sight glass is used in some plant pressure vessels which are subjected to severe operating conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cleaning In General (AREA)

Abstract

In piggable transmission pipelines, stuck pig issue has been frequently reported. There are several factors that can cause the pig to get stuck inside the pipeline which are mainly related to the pipeline's geometry, fittings, cleanliness, pig's design and operating parameters. Stuck pig can cause significant impact on the pipeline operation and integrity including pipeline blockage (operation disruption), pipeline cleaning and inspection pigging delay, high maintenance cost to locate and retrieve the stuck pig. Statistics reveal that many of stuck pig cases, perhaps the majority of cases, were found at the pipeline's fittings, valves or sharp bends. In long pipelines (i.e. 100+ kilometer), it is quite challenging to identify the location of a stuck pig at which multiple valves and fittings exist. This patent application is proposing to design, manufacture and fabricate a special fitting (spools) with butt-weld or flange joints to be installed upstream and downstream the mainline valves, fittings and sharp bends where the probability of encountering stuck pig case is high. This special spool will be made from the same materials of the pipeline with addition of a sight glass. The sight glass shall be made of materials that are compatible to sustain the applied stresses and external and internal environment of the pipeline. To my knowledge, sight glass is used in some plant pressure vessels which are subjected to severe operating conditions. By implementing this patent, it would be easy task to identify the location of a stuck pig at the fittings, valves and/or sharp bends. This will contribute in major savings in cost and efforts to locate and retrieve the suck pig, and shorten the period of pipeline downtime (interruption) if any.

Description

Pipeline Fittings with Sight. Glass Description
In piggable transmission pipelines, stuck pig issue has been frequently reported. There are several factors that can cause the pig to get stuck inside the pipeline which are mainly related to the pipeline's geometry, fittings, cleanliness, pig's design and operating parameters. Stuck pig can cause significant impact on the pipeline operation and integrity including pipeline blockage (operation disruption), pipeline cleaning and inspection pigging delay, high maintenance cost to locate and retrieve the stuck pig.
Statistics reveal that many of stuck pig cases, perhaps the majority of cases, were found at the pipeline's fittings, valves or sharp bends. In long pipelines (i.e. 100+ kilometer), it is quite challenging to identify the location of a stuck pig at which multiple valves and fittings exist.
This patent application is proposing to design, manufacture and fabricate a special fitting (spools) with butt-weld or flange joints to be installed upstream and downstream the mainline valves, fittings and sharp bends where the probability of encountering stuck pig case is high. This special spool will be made from the same materials of the pipeline with addition of a sight glass. The sight glass shall be made of materials that are compatible to sustain the applied stresses and external and internal environment of the pipeline. To my knowledge, sight glass is used in some plant pressure vessels which are subjected to severe operating conditions.
By implementing this patent, it would be easy task to identify the location of a stuck pig at the fittings, valves and/or sharp bends. This will contribute in major savings in cost and efforts to locate and retrieve the suck pig, and shorten the period of pipeline downtime (interruption) if any.

Claims

Claims
Currently, there are no practical options available to determine the location of a stuck mechanical pig inside a long pipeline. And even after finding the pig, it is challenging to retrieve the pig. From my experience in pipeline business and to my knowledge, this type of special fitting has not been designed or used in pipeline industry.
Since many of the suck pigs cases took place at the fittings, valves and sharp bends, this special fitting/spool can play crucial role to determine the location of a lost stuck pigs. Moreover, this fitting can be used, if flanged joints, to facilitate the retrieval of the stuck pig during pipeline shutdown.
Prompt finding of the lost stuck pigs will avoid major implications such as pipeline blockage (shutdown-impact on customers), pipeline cleaning and inspection pigging delay, high maintenance cost to locate and retrieve the stuck pig.
PCT/SA2017/050006 2017-08-16 2017-08-16 Pipeline fittings with sight glass WO2019035747A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SA2017/050006 WO2019035747A1 (en) 2017-08-16 2017-08-16 Pipeline fittings with sight glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SA2017/050006 WO2019035747A1 (en) 2017-08-16 2017-08-16 Pipeline fittings with sight glass

Publications (2)

Publication Number Publication Date
WO2019035747A1 true WO2019035747A1 (en) 2019-02-21
WO2019035747A9 WO2019035747A9 (en) 2024-02-08

Family

ID=65362999

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SA2017/050006 WO2019035747A1 (en) 2017-08-16 2017-08-16 Pipeline fittings with sight glass

Country Status (1)

Country Link
WO (1) WO2019035747A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681034A (en) * 1951-02-23 1954-06-15 Trinity Equipment Corp Mounting for sight glass assemblies
EP0024285A1 (en) * 1979-08-22 1981-03-04 Schulz, Wilhelm Sight glass mounting
FR2829559A1 (en) * 2001-09-07 2003-03-14 Equip Inox Pipe liquid viewing mechanism having tube body section piping attached and having two glass viewing porthole windows diametrically opposite each other.
KR20110031618A (en) * 2009-09-21 2011-03-29 현대중공업 주식회사 Sight glass structure on the pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681034A (en) * 1951-02-23 1954-06-15 Trinity Equipment Corp Mounting for sight glass assemblies
EP0024285A1 (en) * 1979-08-22 1981-03-04 Schulz, Wilhelm Sight glass mounting
FR2829559A1 (en) * 2001-09-07 2003-03-14 Equip Inox Pipe liquid viewing mechanism having tube body section piping attached and having two glass viewing porthole windows diametrically opposite each other.
KR20110031618A (en) * 2009-09-21 2011-03-29 현대중공업 주식회사 Sight glass structure on the pipe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Pipe Spool with Sight Glass", ZEYON INC,, 8 June 2016 (2016-06-08), XP055572544, Retrieved from the Internet <URL:https://web.archive.org/web/20160608150312/http://www.zeyon.com/portfolio-items/pipe-spool-sight-glass/> [retrieved on 20180425] *

Also Published As

Publication number Publication date
WO2019035747A9 (en) 2024-02-08

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