The HPHT fluid loss control aid broadly comprises Gilsonite, an asphaltic material or solidified hydrocarbon produced by PUB Gilsonite Company in Iran. The Gilsonite employed according to the present invention also contains a surfactant, especially, a nonionic surfactant.
date_rangeFeb 07' 2019 / India
date_rangeOct 27' 2018 / China
date_rangeOct 25' 2018 / China
date_rangeOct 24' 2018 / China