They tend to want to melt and break out when you don't want them to.
They are so delicately held in that state that even the heat of drilling can
break them out, or the exothermic heat generation during cement curing can do it. So it's a bit of a bear in trying to keep them locked until you
want them unlocked. There's been work done in researching methane hydrates and optimizing drilling, cementing, etc., in the past, but it still isn't "optimized" and will probably take a lot more development of processes, chemicals and drilling techniques before they are consistently handled in a successful way.


I just found out about this thing called 'gas hydrates' and it's potential for use as an
alternative fuel source. I'm not surprised that it's never mentioned on the news and such, after all the oil barons are in control of the world,
aren't they?
A gas hydrate is a crystalline solid; its building blocks
consist of a gas molecule surrounded by a cage of water molecules. Thus it is similar to ice, except that the crystalline structure is stabilized by
the guest gas molecule within the cage of water molecules. Many gases have molecular sizes suitable to form hydrate, including such naturally
occurring gases as carbon dioxide, hydrogen sulfide, and several low-carbon-number hydrocarbons, but most marine gas hydrates that have been analyzed
are methane hydrates.