دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to treat oil-bearing limestone or other formations with acid for the purpose of increasing production. Hydrochloric or other acid is injected into the formation under pressure. The acid etches the rock, enlarging the pore spaces and passages through which the reservoir fluids flow. Acid also removes formation damage by dissolving material plugging the rock surrounding the wellbore. The acid is held under pressure for a period of time and then pumped out, after which the well is swabbed and put back into production. Chemical inhibitors combined with the acid prevent corrosion of the pipe. acid recovery plant n: plant for therecovery of sulfuric acid from acid sludge.

n: the quality of being acid. Relative acid strength of a liquid is measured by pH. A liquid with a pH below 7 is acid. See pH.

n: The relative acid strength of liquids as measured by pH. A pH value below 7. See pH.

v: To apply acids to the wall of oil and gas wells to remove any material that might obstruct flow into the wellbore.

use of a mineral acid (typically HCl or HCl/HF) or an organic acid (typically acetic or formic) to remove damage or stimulate the permeability of a formation.

n: a declaration or an avowal of any act or fact made by a signatory party to a document to a notary public or other public official authorised to take an acknowledgement to give it legal effect.

n: English system buttress thread whose top angle is 29°. Mainly used to convey dynamic.

formations below the deepest zones that can be imaged by an acoustic process.