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51315-5480-Scale Deposition Control and Management in Subsea Fields

Picture for Scale Deposition Control and Management in Subsea Fields
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Product Number: 51315-5480-SG
ISBN: 5480 2015 CP
Author: Hua Guan
Publication Date: 2015
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There is a general industry recognition that production chemistry is a growing concern from conceptual design and FEED stage though to the lifetime operations. The global opportunities within the subsea market in both green field and brown field has only become more complex.The increasing complexity in subsea fields has brought significant challenges in terms of scale control and management this is highlighted by the uncertainties of scale risk evaluation due to the lacking of reliable water compositions e.g. comingled water inhibition chemicals are more vulnerable for degradation under harsh subsea environment and well access / interventions become difficult and costy.For continuous scale inhibitor application the main challenge is associated with the limited chemical injection line long tie back with big P/T variation and long residence time; while the well access and downhole placement can be particular challenging for squeeze application. The inadequate water data the potential ion stripping and the limitation of current used thermodynamic scale prediction softwares all contribute to the uncertainty and inaccuracy in scale evaluation.This paper will overview the scale management challenges associated with subsea fields while focus on the development over the years in terms of laboratory evaluation techniques analytical advancement and modelling integration practises; a few examples of good experiences and lessons learnt are given in the paper.
There is a general industry recognition that production chemistry is a growing concern from conceptual design and FEED stage though to the lifetime operations. The global opportunities within the subsea market in both green field and brown field has only become more complex.The increasing complexity in subsea fields has brought significant challenges in terms of scale control and management this is highlighted by the uncertainties of scale risk evaluation due to the lacking of reliable water compositions e.g. comingled water inhibition chemicals are more vulnerable for degradation under harsh subsea environment and well access / interventions become difficult and costy.For continuous scale inhibitor application the main challenge is associated with the limited chemical injection line long tie back with big P/T variation and long residence time; while the well access and downhole placement can be particular challenging for squeeze application. The inadequate water data the potential ion stripping and the limitation of current used thermodynamic scale prediction softwares all contribute to the uncertainty and inaccuracy in scale evaluation.This paper will overview the scale management challenges associated with subsea fields while focus on the development over the years in terms of laboratory evaluation techniques analytical advancement and modelling integration practises; a few examples of good experiences and lessons learnt are given in the paper.
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