ICKE FORORENADE, FLYTBARHETSBEFREMJANDE ADJUVANTIUM FOR BORRSLAM BASERAT PA SALTVATTEN OCH/ELLER SOTVATTEN

摘要

Non-polluting thinning adjuvant for sea-water and/or fresh-water based drilling muds. Non-polluting thinning adjuvant for sea-water and/or fresh-water based drilling muds, with the aim to maintain their rheological characteristics in the extreme conditions of temperature and pressure which prevail in wells drilled at great depths. This thinning adjuvant is characterized by the fact that it is a hydrosoluble copolymer resulting from the copolymerization of ethylenic acids, acrylamides and ethylenic esters of phosphoric acid. Its general formula is: +TR in which the indices m,n,p -expressed in % in mole- are chosen from the following intervals: 0%