If you are working for Qatargas by chance (I see you are based in Qatar), try to get the Pipeline Operation Manual for QG3&4 project (LNG trains 6 and 7). While working for that project in 2010/2011, I was partially familiar with the offshore pipeline operation issues (not in my scope at the time but I remember the document was excellent - explaining in details everything about hydrate envelopes and ways of mitigation).

Dejan IVANOVIC
Process Engineer, MSChE

Many thanks Emmanuel Top, I have searched that document you referred to, yes it has details of types of Hydrate prevention chemical such as KHI and EG and MRG, however it does not explain the chemical and physical formation of hydrate which could be similar to ice formation shape.

I will keep looking for the info, and many thanks for your help. appreciated.

Carroll's book might be something you are looking for: http://store.elsevier.com/Natural-Gas-Hydrates/Joh...

See also http://www.ipt.ntnu.no/~jsg/undervisning/naturgass...

Dejan IVANOVIC
Process Engineer, MSChE

or something like this?

Ignore the BP issues and look at the hydrate formations and references. https://miktechnology.wordpress.com/2010/05/22/hyd...

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

Both, Emmanuel and LittleInch references are excellent, I appreciate your support, you are professional team.