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Mining-geological-petroleum engineering bulletin, Vol.20 No.1 December 2008. -

Formate-based fluids has been successfully used in over hunders HPHT well operations since they introduced in field practice. They have many advantages when compared with conventional HPHT drilling and completion fluids such as: minimal formation damage, maintenance of additve properties at high temperatures, reduced hydraulic flow resistance, low potential for differential sticking, naturally lubricating, very low corrosion rates, biodegradable and pose little risk to the environment etc. Formate-based fluids can be applied during deep slim hole drilling, shale drilling, reservoir drilling, salt and gas hydrate formations drilling. The laboratory research was carried out to evaluate the rheological behavior of formate-based fluids as a function of temperature. Formate-based fluids were formulated using potassium formate brine, xanthan polymer, PAC, starch and calcium carbonate. Experimental results show that potassium formate improves the thermal stability of polymers.

formate-based fluids; potassium formate; high temperature; fluid properties; drilling



Autor: Nediljka Gaurina-Međimurec - Borivoje Pašić - Katarina Simon - Davorin Matanović - Matija Malnar -

Fuente: http://hrcak.srce.hr/



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