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Feb 28, 2018

Onshore Pipeline Route Survey

by Internal Sources

Survey and soil investigations are among the prime activities which are carried out after an onshore pipeline is planned. An appropriately and accurately surveyed onshore pipeline route dramatically reduces the efforts required for onshore pipeline design and construction. Therefore, survey is one of the foundation activity which is carried out to firm pipeline route centreline, explore dumpsites locations and intermediate station/ terminal facilities on ground, obtaining topographic features, ground profile and soil data along the pipeline route...

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Aug 1, 2018

HDD Design Analyser

by Internal Sources

HDD Analyser is a comprehensive program for the design analysis of pipelines crossings by horizontal direction drilling methodology. HDD Analyser performs the pipeline stress analysis and HDD design calculation in compliance with the International Codes and Standards. This program can be used to analyze and assess the safety of a given HDD crossing for pipelines during installation, post-hydrotest and during operation stages.

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May 17, 2018

Girth Welding (Hydrocarbon Pipelines)

by Internal Sources

This article is focused strictly on girth welding process for the construction of pipelines. The target readers are the professionals who are involved in the pipeline welding processes but are not the experts as this article covers the hydrocarbon pipeline welding in a bird's eye view perspective and does not dig into the minutest details.

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Jan 22, 2018

DNVGL-ST-F101:2017 - Article

by Internal Sources

This article explains the wall thickness analysis for offshore pipelines using DNVGL-ST-F101: 2017 Code Compliance Web application. The submarine pipelines wall thickness selection is generally performed based on the criteria specified in Section 5 of DNVGL-ST-F101, 2017 detailed as below:

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Nov 08, 2017

Seabed Intervention (Submarine Pipelines)

by Internal Sources

Submarine pipelines in deepwater are mostly laid directly on the seabed. To place a pipeline on the seabed securely, the seabed should be ideally as flat and regular as possible. However, that is not the case many times due to the presence of various geophysical features on the seabed. If such geophysical features make the seabed irregular or undulating, then pipeline may face the risk of spanning and overstressing beyond the allowable limits. In shallower waters, pipelines may get unstable due to close exposure to waves, currents and tidal movements. Submarine pipelines in deepwater....

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Nov 20, 2016

Line Pipe (Introduction)

by Internal Sources

A pipeline traverses through various diverse locations which are difficult to approach during regular operation. For the construction of the pipeline enormous chunk of land is temporarily acquired by the Pipeline Operator from the land owners. Once the pipeline is buried, land is returned to the owners for their use such as agriculture etc. which limits the accessibility to the pipeline in due course of time. Therefore, pipelines are required to be constructed such that it requires minimal human interference during operation and ensures high level of safety & integrity throughout its design life. The onus to fulfill such high quality and reliability standard rests on the first....

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Feb 26, 2016

Large Diameter Pipelines (Onshore)

by Internal Sources

To cater to huge energy requirements for ever increasing industrial growth, which world is witnessing, the importance of continuous supply of energy gains utmost importance. To supply for the ever increasing energy requirements it becomes imperative that pipelines of larger diameter are installed so that higher throughput can be delivered. This minimizes the impact on environment and also the resources required to install the pipelines thus ensuring the energy sustainability. However installation of large diameter pipelines comes with its fair share of challenges as well. This article covers the major challenges faced in design, engineering, manufacturing and installation of large diameter pipelines, including its cost and time implications.

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Dec 14, 2015

Pipeline Vs Piping : Comparison

by Internal Sources

This article is intended to throw light on the differences between pipeline engineering and piping engineering, which are important organs of any engineering firm active in oil and gas sector. Pipeline and piping engineering do not only sound similar but share a lot of common activities. Both the engineering department belong to mechanical disciplines and deals primarily with pipes. Various codes have defined the battery limits for pipeline and piping activities, however, there has always been a contest between Pipeline and piping disciplines.....

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Sept 28, 2015

Deepwater pipelines : Mechanical design

by Internal Sources

This paper broadly elucidates the nuances involved in mechanical design (or wall thickness selection) of deepwater pipelines such as requirement of thick-walled line pipes to sustain collapse due to external over-pressure and tensile stresses generated due to installation forces etc. This article expects the reader to be acquainted with the offshore pipeline design code DNVGL-ST-F101.

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Sept 4, 2015

Pipeline Coatings : A comparative study

by Internal Sources

This article details the various coating systems which are applied on hydrocarbon pipelines now a days. It also provides the properties which desired in an effective pipeline coating system and provides a comparative study between FBE, CTE and 3LPE coatings based on those properties.

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Sept 2, 2015

Hydrocarbon pipelines: Introduction

by Internal Sources

This article briefly introduces the hydrocarbon pipelines, both onshore pipelines and offshore pipelines. It explains the various stages of the hydrocarbon pipelines and provides the vital details of activities which are performed during the design and installation stage of the pipelines.

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Aug 18, 2015

Horizontal Directional Drilling

by Internal Sources

Horizontal directional drilling (HDD) is a steerable trenchless method of installing underground pipelines in a shallow arc along a prescribed bore path by using a surface-launched drilling rig, with minimal impact on the surrounding area. Directional boring is used when trenching or excavating is not practical. The tools and techniques used in the HDD process are an outgrowth of the oil well drilling industry.

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