The Tordis IOR Project

Gjerdseth, Ann Christin; Faanes, Audun; Ramberg, Rune Mode

doi:10.4043/18749-ms

Cited by 16 publications

(3 citation statements)

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“…Primary or bulk separation is a field proven operation either by means of a gravity vessel as installed on Tordis [A.C. Gjerdseth, 2007] or a PipeSeparator as installed on Marlim [S. I. Sagatun, 2008;R.…”

Section: Technology Maturity Statusmentioning

confidence: 99%

All Subsea: A Vision for the Future of Subsea Processing

et al. 2015

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Over the past 10 to 15 years subsea processing has been globally established as a market segment within the subsea development arena. Subsea processing is expected to be a growth platform for operators and for the service companies that are developing equipment and solutions for well processing and treatment at or below the seabed. The ultimate result of the All Subsea vision is the production of hydrocarbons from reservoir directly to market. Operators and service companies have high expectations for the profitability this business offers and share the All Subsea vision of future topside-less developments.This paper examines the realism of this All Subsea vision and discusses how the vision can be implemented, based on an analysis of the current state-of-the-art technology and the gaps and barriers that may jeopardize the realization of true subsea-to-market solutions.Developing products and systems with high development costs for a limited market requires a close cooperation between the suppliers and oil companies.The paper also reflects on the history of subsea processing, the market trends, and the way subsea processing technologies are adopted by the industry, seen from the authors' perspective and with their extensive experience in developing and delivering subsea processing solutions worldwide.

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Section: Technology Maturity Statusmentioning

confidence: 99%

All Subsea: A Vision for the Future of Subsea Processing

et al. 2015

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“…Besides, long transfer of useless water is eliminated. It will require more efficient subsea separation technology than currently applied in developments in the North Sea , and Brazil . A water content below about 1% is a likely requirement.…”

Section: Long-distance Oil Satellite Tiebacksmentioning

confidence: 99%

Production of Waxy Oils on the Norwegian Continental Shelf: Experiences, Challenges, and Practices

Rønningsen

2012

Energy Fuels

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This paper gives an overview of some important experiences and challenges with the production of waxy oils on the Norwegian continental shelf with regard to the control of wax deposition and gelling. Fundamental as well as operational aspects of wax and gelling control are addressed, such as (i) pipelines with severe wax buildup, (ii) prediction of wax deposition potential, (iii) measurement and monitoring of wax deposition in pipelines, (iv) pig design for efficient wax removal and criteria for determining wax pigging frequency, (v) wax pigging in gas-dominated flow lines, (vi) production of waxy, high-pour-point oils, (vii) production of waxy fluids from low-temperature reservoirs, and (viii) long-distance oil satellite tiebacks. In addition to relevant experiences and current status and trends, views on focus areas and directions forward are given.

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“…To avoid the negative consequences of water in the transport system, it has been proposed to place separation systems close to the production site and remove the water . This has resulted in several subsea separation facilities, where the separation equipment has been placed on the seabed; among them two facilitiesTroll C and Tordis , are in Norway. Besides water removal on the seabed, subsea separation has many other advantages.…”

Section: Introductionmentioning

confidence: 99%

Optimal Operation of a Subsea Separation System Including a Coalescence Based Gravity Separator Model and a Produced Water Treatment Section

Das

Heggheim

Dudek

et al. 2019

Ind. Eng. Chem. Res.

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In this work, we develop a model for a gravity separator, and use it together with models from literature to study the control of a subsea separation system that separates oil, gas and water from well fluids in hydrocarbon production. Our separation system contains a gravity separator, hydrocyclones and compact flotation units. The main contributions of the paper are twofold. First, we present a coalescence based dynamic gravity separator model, which is able to predict oil concentration in water outlet and water concentration in oil outlet. Second, we study optimal operation of the overall separation system with an objective of maximizing water removal. We propose a simple control structure that operates the process close to optimally, by rejecting disturbances from upstream flows and maintaining a tight control of the quality of the purified water leaving the system.

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The Tordis IOR Project

Cited by 16 publications

References 0 publications

All Subsea: A Vision for the Future of Subsea Processing

All Subsea: A Vision for the Future of Subsea Processing

Production of Waxy Oils on the Norwegian Continental Shelf: Experiences, Challenges, and Practices

Optimal Operation of a Subsea Separation System Including a Coalescence Based Gravity Separator Model and a Produced Water Treatment Section

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