دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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: parent group of the Society of Petroleum Engineers (SPE). See Society of Petroleum Engineer. Its official publication is the Journal of Petroleum Technology. Address: 345 East 47th Street;New York, NY 10017;(212) 705-7695.

n: organisation that sets guidelines for the testing and use of equipment and materials. Its publications are ASTM Standardisation News, Book of Standards, Cement and Concrete Aggregates Journal, Composites Technology & Research, Geo technical Testing Journal, Journal of Forensic Science, and Journal of Testing and Evaluation. Address: 100 Barr Harbor;West Conshohocken, PA 19428;(610) 832-9500.

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: The assemblage opening in palm journal of cone bit. The weld line after cone ball is installed and the ball retaining plug is inserted.

n: Installed in the assemblage opening of cone journal. Used to prevent ball dropping out of the track.

n: 1. an object, surface, or point that supports. 2. a machine part in which another part (such as a journal or pin) turns or slides.

n: The report form recorded drilling condition every day.

n: See boring journal.