دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a crystalline acid (NH2S03H) derived from sulfuric acid that is sometimes used in acidizing.

a dry acid derivative of sulfuric which is used in very minor acid jobs in the form of acid sticks dropped into the well.

n: a compound containing the SO4 group, as in calcium sulfate (CaSO4).

n: All kinds of sulphuric acid salts


one of several minerals containing sulfur ions bonded to oxygen atoms.

n pi: bacteria that digest sulfates present in water, causing the release of hydrogen sulfide, which combines with iron to form iron sulfide, a troublesome scale.

n: Named as hydrogen brittleness cracking,too.when drill fluid contain hydrogen sulphide,hydrogen can infiltrate in steel products and cause it brittle fracture.

n: the brittle failure of metals by cracking under the combined action of tensile stress and corrosion in the presence of water and hydrogen sulfide.

Cracking of a metal under the combined action of tensile stress and corrosion in the presence of water and hydrogen sulfide (a form of hydrogen stress cracking) (NACE).

n: A kind of product used to improve the performance of drill fluid.

n: An asphaltic mud additive that has been reacted with sulfite to add anionic sulfonate groups to the complex molecular structure. Sulfonate groups make an additive water dispersible, depending on the extent of sulfonation. Such an additive is used to stabi

n: A kind of product that made by using fuming sulfuric acid sulphonating brown coal.

n: A kind of product that made by reaction of fuming sulfuric acid with styrene.

n: Usually used as high temperature mud thinner,which is made by sulfonated styrene and maleic anhydride.