Electrification of Offshore Oil & Gas Fields Using Offshore Power Distribution Hub: A Study of Submarine HVAC Power Cables Systems Solutions

Abstract It has been observed that, although submarine power cables have a critical role to wind power arrays and power export to shore, they are often overlooked at early stages of projects and oversimplified during late stages. This leads to lack of attention given during cable design and planning, as well as pressured schedules during manufacturing, testing and installation. The significant number of incidents attributed to offshore submarine cables during construction has increased overall project risk, lowered system average power availability and increased insurance costs. Lack of proper routing can also result in an inability to maintain asset integrity for the project design life. Despite the attention that submarine power cables have received over the past few years, the number and cost of incidents does not appear to be decreasing. A comparison can be made between offshore HVAC and HVDC cables used for wind power and offshore umbilicals and MV cables used in the oil and gas sector. These umbilicals are often similar in weight, size and bending stiffness, and have similar design, manufacturing, routing and installation challenges, but with a fraction of the incidents observed with offshore wind array and export cables. An additional caveat is that the offshore oil and gas sector has achieved a reliable track record while installing and maintaining these umbilicals and cables in fully dynamic conditions (ultra-deep water) as well static conditions. One primary difference between how the oil and gas sector executes these systems are design, planning and specification from an early stage of the project. Significant attention is given at an early stage to quality control, including offshore routing and umbilical testing specifically to avoid incidents resulting in umbilical damage due to the tension and crushing forces during installation as well as ambient seawater and seabed interaction. Management of these risks are documented, and optimal mitigation strategies are implemented early in the design phase. This paper will discuss the types of incidents which have been observed during construction and installation of submarine HVAC/HVDC cables in the wind power sector and how they could have been prevented by normal practices of the offshore oil/gas sector from early design and planning all the way to installation and commissioning.

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Integrated Management Of Offshore Oil & Gas Fields In Real Time

10.4043/10738-ms ◽

1999 ◽

Author(s):

Robert F. Heming

Keyword(s):

Real Time ◽

Integrated Management ◽

Gas Fields ◽

Offshore Oil ◽

Oil Gas

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Methods of regulation of development processes of Bahar field (in the context of X horizon of Balakhany suite)

Azerbaijan Oil Industry ◽

10.37474/0365-8554/2021-1-4-7 ◽

2021 ◽

pp. 4-7

Author(s):

L.A. Abdullayeva ◽

◽

N.V. Nasirli ◽

Keyword(s):

Oil Recovery ◽

Control Charts ◽

Point Of View ◽

The Caspian Sea ◽

Term Operation ◽

Recovery Processes ◽

Current Task ◽

Gas Fields ◽

Offshore Oil ◽

Oil Gas

The development of oil-gas sector in Azerbaijan since the second half of the XX century was achieved mainly due to the exploitation of offshore fields. However, as a result of harsh hydro-meteorological conditions in the Caspian Sea, the exploration, as well as the development of offshore oil-gas deposits was not so easy. Exactly in such conditions due to the efforts of the scientists and experienced engineers and technicians specialized in this sphere, the hard exploration problem was solved both from geological and technical points of view. However, even today there are some technological and geological-technical issues during the operation of offshore oil-gas fields or in whole development of the resources. From this point of view Bahar field as the all fields being in long-term operation still have a large capacity of unused residual reserves of great importance. Therefore, accurate and detailed study of complicated oil recovery processes is a significant and current task. Thus, for the analysis of oil recovery processes it is necessary to select the optimum and economically feasible methods and practical to involve into the investigation dynamic model of “Stewhart control charts” for its solution.

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