Advantages And Disadvantages Of Flow Assurance Management

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CHAPTER THREE

FLOW ASSURANCE MANAGEMENT STRATEGIES

As stated earlier in the introductory part of this work, Flow assurance challenges are indeed a great concern to the oil and gas industry. Starting from the formation, through processing and sales, flow assurance management strategies has to be carefully designed in order to prevent having problems with fluid flow.
Remediation of hydrates or wax in flowlines and pipelines poses greater challenge and loss of money to the oil industry. This is because, blockage point location is a difficult job itself at first, and if blockage is far away from an access point, such as riser, it may be difficult to reach it with chemicals or other remediation tools especially at subsea location (Kaczmarski and Lorimer 2001).

The selection of hydrate mitigation and remediation strategies is based on
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The different technologies are evaluated based on the research description literatures. The issues are as follows: technical evaluation, environmental, and economical evaluations, and advantages and disadvantages of the different technologies.

3.2 PREVENTION WITH CHEMICAL INHIBITION TECHNIQUES
Thermodynamic inhibitors are chemical compounds added in high concentrations (10-60wt.%) to alter the hydrate and wax formation and deposition conditions. This is still the widest method used worldwide, but its associated costs, environmental concerns and operational complexity have made researchers look for different approach to the problem (J.E Paez et al 2001). Injection of chemical is used for pipelines with length ranging from 10 km to 200 km (Gudmundsson 2012 and Ilahi 2006).

Chemical hydrate inhibitors can be grouped into two main categories: The Thermodynamic Hydrate Inhibitors (THIs) and Low Dosage Hydrate inhibitors (LDHIs) (S. Brustad, K.P. Løken and J.G Waalmann; 2006).

3.2.1 Thermodynamic Hydrate Inhibition – Technical
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