دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a method by which petroleum-bearing limestone or other formations are put into contact with an acid to enlarge the pore spaces and passages through which the reservoir fluids flow.

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 new set of journal bearing insert bit presented by America Hughes Company. It has the longer life and higher ROP than many kinds of former bits.

n: 1. a permeable body of rock capable of yielding groundwater to wells and springs. 2. the part of a water drive reservoir that contains the water.

n: (1) water bearing strata. (2) aqueous section in water controlled reservoir.

a water containing formation that may or may not be directly connected to the hydrocarbon bearing zone. A connected aquifer may or may not offer pressure support to the pay.

n: The bearing that can prevent the rotary table jumping due to the component force of gear.

n: a bearing in which a finely machined shaft (a journal) turns on freely rotating hardened-steel spheres that roll easily within a groove or track (a race) and thus convert sliding friction into rolling friction. See ball race.

n: Composed by a set of hardened ball, inside race and outside race. Because the ball can roll flexibly in the race, the bearing journal can revolve freely in the bearing.

n: A kind of double core barrel drill. The top of inner barrel is hung by ball bearing. It is good for improvement of core recovery if inner barrel does not roll with outer barrel.

n: See ball bearing of cone.

n: Composed by several balls installed in the cone bearing and tray bath in the surface of cone axis. Used for sustaining radial reacting force of cone and part of axial force. Also can lock the cone and make sure it not fall off from the cone.

n: Installed in the bearing race of cone. There are a ball bearing and two roller bearing in every cone, both absorbing radial load.