| abstract |
A kind of Compositional type ocean hydrate stores polyvinyl alcohol drilling fluid, is related to exploitation of gas hydrates field.Drilling fluid of the present invention includes following components：Polyvinyl alcohol, sodium chloride, methanol, ethylene glycol, sulfonated phenolic resin SMP 2, potassium humate, xanthans, Vinylcaprolactam homopolymer, polyvinyl methyl ether, four just base trimethylammonium bromide and prepare water, it can be used for sea bed gas hydrate storage drilling well to use, has the function of Solid Free, low temperature resistant, it is compounded with synergist in drilling fluid by the way that kinetic inhibitor is added, inhibition is generated with stronger hydrate, and components of drilling liquid is small to environmental hazard, has many advantages, such as that efficient, environmental protection, raw material are cheap and easy to get. |