دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: any chemical compound. one element of which is hydrogen, that dissociates in solution to produce free hydrogen ions. For example, hydrochloric acid. HCI, dissociates in water to produce hydrogen ions, H+, and chloride ions, CI-. This reaction is expressed chemically as HCI + H+ + CI- . See ion.

a reactive material with a low pH. Common oilfield mineral acids are HCl and HCl/HF.

n: The soda-lime glass bottle used to hold the hydrofluoric acid. Early directional drilling used acid bottle to survey the inclination.

n: see hydrogen embrinlement.

n: Metal becomes brittle rupture because of absorbing hydrogen.

low ductility of a metal due to its adsorption of hydrogen. More commonly called hydrogen embrittlement.

n: a naturally occurring clay that, after activation, usually with acid, is used mainly as a decolourant or refining agent, and sometimes as a desulphuriser, coagulant, or catalyst.

n: It is made by adding suitable powder of lime or carbonate to the cement.

the change in pulsed neutron capture created by acidizing a carbonate. Acidizing increases interconnected porosity and strands chlorides and other ions in the rock.

chemical analysis of the acid concentration and other chemical and physical measurements in the returning acid.

v: to part or open fractures in productive hard limestone formations by using a combination of oil and acid or water and acid under high pressure. See formation fracturing.

to fracture stimulate a formation by injecting the acid over the parting pressure of the rock and using the acid to etch channels in the fracture face.