Installation Engineering Challenges of the World's Heaviest Topside on Steel Substructure

2021 ◽  
Author(s):  
Prasad Kunnathully Prabhakaran ◽  
Cibu Varghese ◽  
Faris Ragheb Kamal
Keyword(s):  
Weight Control ◽  
Oil And Gas ◽  
Load Transfer ◽  
Development Project ◽  
Design Stage ◽  
Gas Treatment ◽  
Field Development ◽  
Gas Processing ◽  
Transfer Method ◽  
Load Transfer Method

Abstract As part of a green field development project for ADNOC offshore, NPCC here in after called as "contractor", successfully completed installation of an oil and gas processing super complex at offshore Abu Dhabi. This super complex consisted of four large interconnected platforms of different functionalities and an accommodation platform. Associated flare structures and interconnecting bridges were also installed as part of this project. Weights of the topsides in this project were varying from 7,000MT to a ∼32,000 MT. All these topsides were installed by float-over method using contractors own cargo /launch barge fleet. Gas treatment platform topside installed as part of the above project is the world's heaviest single-module topside Installed by float-over on a fixed steel jacket. Float-over is the process of installing the topside on a preinstalled jacket by ballasting and/or by other methods of load transfer such as hydraulic jacks. This installation method is widely used for heavy topsides, due to its cost effectiveness and efficiency. By float over installation method, the topside can be installed as a single integrated unit after completion of all hookup and commissioning works onshore. This paper outlines installation engineering challenges during EPC phase for the gas treatment platform topside. Design of this topside went through phenomenal changes in terms of its size and weight during EPC phase and posed several challenges to install this unit as a single module. This paper presents the installation method, and various parameters considered during installation and also includes discussion on selection of float-over barge, importance of weight control & layout design, finalization of topside support height on barge and installation aids. This paper also presents various installation engineering analyses required during design stage. Float-over installation of the gas treatment platform was carried out by the conventional load transfer method (by ballasting) and using normal spread mooring arrangement.

Economic Risk Analysis of Offshore Projects

1992 ◽  
Vol 114 (3) ◽  
pp. 165-174 ◽  
Author(s):  
E. M. Bitner-Gregersen ◽  
J. Lereim ◽  
I. Monnier ◽  
R. Skjong
Keyword(s):  
Net Present Value ◽  
Oil And Gas ◽  
Development Project ◽  
Oil Field ◽  
Economic Risk ◽  
Gas Field ◽  
Cost Overruns ◽  
Field Development ◽  
Project Assessment ◽  
Oil Field Development

A quantitative analysis of economic risk associated with large investments in offshore oil and gas field development and production is presented. The analysis is intended as a supporting tool in decision-making faced with uncertainty and risk, to study the effect of alternative decisions in an easy manner. The descriptors for the project assessment, such as the Internal Rate of Return (IRR) and Net Present Value (NPV) are applied. The study demonstrates first the impacts of early pilot production (EPP) prior to a main oil field development on the field economy of an oil field development and production installation. Furthermore, the result of cases which reflect relevant situations connected with cost overruns are presented, as well as derivation of rational decision criteria for termination/continuation of a project subjected to cost overruns. Finally, an oil field development project scheduling is demonstrated.

scholarly journals Workflow for Probabilistic Resource Estimation: Jafurah Basin Case Study (Saudi Arabia)

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8036
Author(s):  
Ruud Weijermars ◽  
Miao Jin ◽  
Nur Iman Khamidy
Keyword(s):  
Saudi Arabia ◽  
Natural Gas ◽  
Development Project ◽  
Carbonaceous Shale ◽  
Pipeline System ◽  
Processing Plant ◽  
Field Development ◽  
Gas Processing ◽  
Well Spacing ◽  
Public Data

This study provides a workflow and preliminary estimations of the estimated ultimate recovery (EUR) volumes for natural gas and condensate liquids in the Tuwaiq Mountain Formation, the principal target in the Jafurah Field development project in Saudi Arabia. The strategic need for the field development is reviewed and the field characteristics are outlined based on public data sources complemented with data from analogous reservoirs. The target zone in the Jafurah Basin is a carbonaceous shale, being developed with up to 10,000-ft-long multistage-fractured laterals with 30 ft perforation cluster spacing and an assumed typical 1250 ft well spacing. The field will come on stream in 2024, when the gas-gathering pipeline system, natural gas processing plant, and underground gas storage facilities will all be in place. The range of uncertainties in the key reservoir parameters is taken into account to estimate preliminary EUR volumes (P90, P50, and P10) for both gas and condensates. Based on the present and prior EUR estimations, it can be concluded that the Jafurah Basin comprises one of the largest unconventional field development projects outside of North America.

scholarly journals Terminological nomination in modern fields of knowledge

2020 ◽  
Vol 210 ◽  
pp. 21012
Author(s):  
Irina Valujtseva ◽  
Olga Ivanova ◽  
Ilya Khukhuni ◽  
Anna Fedosova
Keyword(s):  
Sampling Method ◽  
Oil And Gas ◽  
Subject Area ◽  
Development Project ◽  
Common Type ◽  
Scientific Text ◽  
Continuous Sampling ◽  
Gas Processing ◽  
Research Material ◽  
The Subject

The purpose of the study is to consider the features of the terminological nomination using the example of multiword terms of the English sublanguage of oil and gas processing. The oil and gas glossary Kashagan Development Project Glossary that comprises 1200 units has been used as the research material. Multiword terms have been selected with the application of the continuous sampling method. As a result of the employment of the method of linguistic statistics, it was discovered that, in the sub-language of oil and gas processing, the multiword terms constitute 73% of the entire termbase of the subject area. The structural analysis of terminological phrases demonstrated that the most common type of multiword terms is the two-word terms, comprising 45.2% of the total number of poly-lexemic constructions in the studied sample. This result is consistent with the data obtained by other authors, namely, the information concerning the fact that two-word combinations prevail in various term systems. As the number of components in a multiword term increases, the number of such word combinations in a scientific text decreases. The most common patterns of two-word terminological combinations are N + N and A + N. Three-word terms compose 40% of the total number of the studied terminological phrases. The following patterns of three-word terms are productive: N + N + N and A + N + N. Four-word terminological phrases constitute 12.3%. The most frequently used pattern of four-word combinations is N + N + N + N. Five-word terms comprise 2.4% of the total number of terms. The most common patterns of five-word terms are N + N + A + N + N and A + N + N + N.

scholarly journals Evaluation of Oil and Gas Economy using Economics Profit Indicators and Prototype Macro VBA Excel

2021 ◽  
Vol 1 (1) ◽  
pp. 549-558
Author(s):  
Juwairiah Juwairiah ◽  
Didik Indarwanta ◽  
Frans Richard Kodong
Keyword(s):  
Economic Analysis ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Development Project ◽  
Economic Indicators ◽  
Gas Field ◽  
Gas Industry ◽  
Field Development ◽  
Oil And Gas Field ◽  
Oil And Gas Sector

The oil and gas sector is an important factor in sustainable development, so it is considered necessary to make serious changes in conducting economic analysis on the oil and gas business. Oil and gas industry activities consist of upstream activities, and downstream activities. Activities in these upstream and downstream operations have high risk, high costs and high technology, so the company continuously tries to reduce the importance of the adverse impact of these risks on the work environment and people. Thus, evaluating the factors that affect sustainable production in this sector becomes a necessity. In this research will be evaluated the economy of the oil and gas field using methods of economic indicators, among others; NPV, POT, ROR, where these factors are estimated in order to be able to estimate the prospects of the oil and gas field so that the decision that the field development project can be implemented or cannot be taken immediately. Implementation of oil and gas field economic evaluation in this study using Macro VBA Excel. From several methods of economic analysis obtained that the results of this study show high precision compared to other methods, in addition to the way of evaluation using the above economic indicators is very popular.

scholarly journals Deformation of casing strings as a result of technogenic deformation processes during oil and gas field development. Part 1. Identification of the causes of deformation of casing strings

2021 ◽  
pp. 28-37
Author(s):  
M.K. Tupysev
Keyword(s):  
Oil And Gas ◽  
Design Stage ◽  
Gas Field ◽  
Field Development ◽  
Oil And Gas Field ◽  
Deformation Processes

The analysis of works on identification of causes of deformation of casing production strings of wells is carried out. The main reason for the deformation of the strings is the technogenic deformation of the rocks of the layers of drained deposits. The need to take into account technogenic processes for the design of used wells at the design stage of oil and gas field development is shown.

The Gjøa Semi: a North Sea project relevant for Western Australia

2011 ◽  
Vol 51 (1) ◽  
pp. 589
Author(s):  
Kristian Aas ◽  
Lars Bjørheim
Keyword(s):  
North Sea ◽  
Western Australia ◽  
Oil And Gas ◽  
Development Project ◽  
Conceptual Level ◽  
Field Development ◽  
The North ◽  
Heavy Lift ◽  
The North Sea ◽  
Field Location

Gjøa was the largest field development project in Norway in 2010. Gjøa was proven in 1989 and are now being developed together with nearby Vega satellites. The combined reserves are estiThe recent Gjøa field development in the North Sea has many features that are relevant for the oil and gas developments north of Western Australia. While the field location is not very similar to the north of Western Australia, the field development solution is very relevant. Several subsea clusters are tied back to a semi-submersible platform with export of gas and condensate via pipelines to shore. Other aspects to the project that are relevant to Western Australia are split location engineering between Norway and India, fabrication of the hull in Korea and subsequent heavy lift transport to the assembly yard, pre-installation of the mooring system, and tow to field with ocean going tug boats. The semi concept, which was used for the Gjøa development, is a mature technology with few technical challenges on a conceptual level. On the other hand the building of an oil and gas platform for A$2 billion has many challenges, both economical and technical, that have to be solved to have a successful project for both the client and the contractor.

Flowline Bundle Concept for JZ 9-3 Field Development

2014 ◽  
Author(s):  
Jing Cao ◽  
Yong Sha ◽  
Liwei Li
Keyword(s):  
Engineering Design ◽  
Corrosion Protection ◽  
Thermal Performance ◽  
Oil And Gas ◽  
Cost Effective ◽  
Development Project ◽  
Bohai Bay ◽  
Effective Solution ◽  
Field Development ◽  
Protection Potential

Flowline bundle system consisting of carrier pipe, sleeve pipe and internal flowlines offers smart solution for the infield transportation of oil and gas. Due to its features, flowline bundle offers a couple of advantages over conventional flowline in particular for cases where multi-flowlines and high thermal performance are of great interests. The main benefits and advantages of such system include excellent thermal performance to prevent wax formation and hydrates, multiple bundled flowlines, mechanical and corrosion protection, potential reuse, fabricated onshore, as well as towing installation without the requirement of professional pipelay vessel etc. Flowline bundle system can be a smart solution for certain applications, which can be safe and cost effective solution. The objective of this paper is to present the feasibility study of flowline bundle concept for the JZ 9-3 West Development project in Bohai Bay, Offshore China. This study covers engineering design, fabrication, and offshore towing installation. Design and installation results have been presented and the feasibility of flowline bundle concept has been fully demonstrated for the JZ 9-3 West field development.

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