scholarly journals An evaluation of key challenges of CO2 transportation with a novel Subsea Shuttle Tanker

2021 ◽  
Vol 1201 (1) ◽  
pp. 012078
Author(s):  
Y Ma ◽  
Y Xing ◽  
T H Hemmingsen
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
Autonomous Underwater Vehicle ◽  
Material Selection ◽  
Hydrate Formation ◽  
Oil And Gas Fields ◽  
Permanent Storage ◽  
Offshore Oil And Gas ◽  
Co2 Transportation ◽  
Gas Fields

Abstract Recently, a novel Subsea Shuttle Tanker (SST) concept has been proposed to transport carbon dioxide (CO2) from ports to offshore oil and gas fields for either permanent storage or enhanced oil recovery (EOR). SST is a large autonomous underwater vehicle that travels at a constant water depth away from waves. SST has some key advantages over subsea pipelines and tanker ships when employed at marginal fields. It enables carbon storage in marginal fields which do not have sufficient volumes to justify pipelines. Further, in contrast to ships, SST does not require the use of a permanently installed riser base. This paper will evaluate the key challenges of using such vessel for CO2 transportation. It discusses the most important properties such as thermodynamic properties, purity, and hydrate formation of CO2 at different vessel-transportation states in relation to cargo sizing, material selection, and energy consumption.

CO2 Pipelines: A Thermodynamic Modeling with Pre-Salt Applications

2016 ◽  
Vol 830 ◽  
pp. 57-64 ◽  
Author(s):  
José Luiz de Medeiros ◽  
Ofélia Queiroz Fernandes de Araújo
Keyword(s):  
Compressible Flow ◽  
Oil Recovery ◽  
Carbon Capture ◽  
Oil And Gas ◽  
Axial Direction ◽  
Oil And Gas Fields ◽  
High Pressure Co2 ◽  
Offshore Oil And Gas ◽  
Co2 Flow ◽  
Gas Fields

This paper approaches CO2 pipelines operating with high dense compressible flow for Enhanced Oil Recovery (EOR) and/or Carbon Capture & Geological Storage (CCGS). The idiosyncrasies of high pressure CO2 flow are discussed and an appropriate and rigorous steady-state compressible flow pipeline model is disclosed. The model gives three Ordinary Differential Equations (ODE) which result from one-dimensional, one-phase, Mass, Momentum & Energy Balances along the pipeline axial direction. This ODE set is numerically integrated leading to profiles of temperature, pressure and inventory along the pipeline, which are basic for design. An example is explored in the context of a hypothetical EOR CO2 pipeline aligned to the production of CO2 rich natural gas in the Pre-Salt offshore oil and gas fields on the southeast coast of Brazil.

A review of treatment technologies for produced water in offshore oil and gas fields

2021 ◽  
Vol 775 ◽  
pp. 145485
Author(s):  
Yiqian Liu ◽  
Hao Lu ◽  
Yudong Li ◽  
Hong Xu ◽  
Zhicheng Pan ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Produced Water ◽  
Oil And Gas Fields ◽  
Treatment Technologies ◽  
Offshore Oil And Gas ◽  
Gas Fields ◽  
Offshore Oil

Environmental Effect on Fatigue Life of FPSO Hull Structures

2009 ◽  
Author(s):  
Xiaozhi Wang ◽  
Booki Kim ◽  
Yanming Zhang ◽  
Ping Liao
Keyword(s):  
Oil And Gas ◽  
Low Cycle Fatigue ◽  
Oil And Gas Fields ◽  
Analysis Methodology ◽  
Work Area ◽  
Wave Conditions ◽  
Offshore Oil And Gas ◽  
Gas Fields ◽  
Offshore Oil ◽  
And Storage

Floating production, storage and offloading systems (FPSOs) have been widely used in the development of offshore oil and gas fields because of their many attractive features. These features include a large work area and storage capacity, mobility (if desired), relatively low construction cost and good stability. They are mostly ship shaped, either converted from existing tankers or purpose built. The hull structural scantling design for tankers may be applicable to FPSOs; however, FPSOs have their own unique characteristics. FPSOs are located at specific locations with a dynamic loading that is quite different from that arising from unrestricted ocean service conditions for tankers. It is also noted that the wave conditions in recent FPSO applications may be very complicated when operating in areas such as those offshore West Africa and offshore Brazil where both seas and swells exist and propagate in different directions. In this paper, the unique FPSO operational aspects, especially the load assessment due to on-site environments will be described. The methodology of handling complicated wave conditions in fatigue assessment will be addressed. Special considerations for converted FPSOs, which need to take into account their operational history as a trading tanker and low cycle fatigue due to FPSO operations, will also be introduced. Case studies will be presented and appropriate analysis methodology will be summarized. The methodology has also been adopted by ABS Guide, see ABS [1].

Peculiarity of Reserves Production and Oil Recovery of Oil and Gas Fields

2005 ◽  
Author(s):  
N.A. Cheremisin ◽  
P.A. Efimov ◽  
A.A. Klimov ◽  
R.A. Bulatov
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
Oil And Gas Fields ◽  
Gas Fields

SUBSEA PRODUCTION FOR WELLS DRILLED FROM JACKUP DRILLING UNITS

1987 ◽  
Vol 27 (1) ◽  
pp. 357
Author(s):  
M. Thatcher ◽  
D.B. Marietta
Keyword(s):  
Oil And Gas ◽  
Production Systems ◽  
Oil And Gas Fields ◽  
Offshore Oil And Gas ◽  
The Cost ◽  
Gas Fields ◽  
Offshore Oil

Subsea production systems have been an accepted method of developing offshore oil and gas fields since the installation of the first subsea trees in the early 1960s offshore California. Generally subsea completions have been done from floating drilling vessels on wells with subsea wellhead equipment. A number of wells have been completed subsea by bottom supported jackup rigs on wells drilled using mudline suspension equipment. The subsea completion equipment and methods utilised to adapt mudline suspension wells for a subsea production tree are described. This method of completion offers important benefits as it allows completion of wildcat or delineation wells, it can be used in areas of small, scattered reservoirs, and it can be used in conjunction with floating production systems. The cost associated with these subsea completions is roughly equivalent to those of standard subsea completions from floating vessels. An overview of a typical completion system is presented and compared.

An Investigation Into the Effect of Turret Mooring Location on the Vertical Motions of an FPSO Vessel

1999 ◽  
Vol 121 (2) ◽  
pp. 71-76 ◽  
Author(s):  
K. P. Thiagarajan ◽  
S. Finch
Keyword(s):  
Oil And Gas ◽  
Single Point ◽  
Mooring System ◽  
Interior Space ◽  
North West ◽  
Design Considerations ◽  
Oil And Gas Fields ◽  
Offshore Oil And Gas ◽  
Gas Fields ◽  
Offshore Oil

Turret-moored floating production storage and offloading (FPSO) vessels have found application in several offshore oil and gas fields in Australia’s North West Shelf (NWS). These vessels are either custom-built or converted tankers, with an internal or external turret. The position of an internal turret is decided based on a number of design considerations, primarily, available deck and interior space, and weathervaning capabilities. It is known that turret position can influence vertical motions and accelerations of a vessel, but this factor has not been given much importance, in comparison with the effects on the horizontal plane motions, primarily surge. This paper presents the results of a pilot study conducted at the Australian Maritime College, Tasmania, to study the vertical motions of a single-point moored FPSO model in waves, while systematically varying the mooring position across the length of the model. The displacement of the vessel was held constant at 50-percent-loaded condition. A single-point mooring system was designed and implemented on the model to simulate the prototype turret mooring system. Results show that the mooring location significantly affects the vertical motions and accelerations of the vessel. Astern turrets were found to produce higher heave and pitch than other locations tested. Although turrets positioned close to the longitudinal center of gravity produced the lowest overall motions, it is suggested that turret position forward of midships be preferred, as it provides a balance between lowering vertical motions and improving weathervaning characteristics.

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