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The line of sucker rods is represented in this diagram by the solid black line in the center of the well. A sucker rod is a steel rod, typically between 7 and 9 metres (25 and 30 ft) in length, and threaded at both ends, used in the oil industry to join together the surface and downhole components of a reciprocating piston pump installed in an oil well.
The polished rod is connected to a long string of rods called sucker rods, which run through the tubing to the down-hole pump, usually positioned near the bottom of the well. Picture of a pump jack used to mechanically lift liquid out of the well if there is not enough bottom hole pressure for the liquid to flow all the way to the surface.
Ordnance crest "WHAT'S IN A NAME" - military education about SNL. This is a historic (index) list of United States Army weapons and materiel, by their Standard Nomenclature List (SNL) group and individual designations — an alpha-numeric nomenclature system used in the United States Army Ordnance Corps Supply Catalogues used from about 1930 to about 1958.
The MIL-STD-1168 is a set of standard codes used to identify munitions (ammunition, explosives and propellants). It was designed to replace the previous confusing Ammunition Identification Code (AIC) system used by the United States Army Ordnance Department.
L/D – lay down (such as tubing or rods) LD – lay down (such as tubing or rods) LDAR – leak detection and repair; LDHI – low-dosage hydrate inhibitor; LDL – litho density log; LDS – leak detection system (pipeline monitoring) LDTEP – LDT EPT gamma ray log; LEAKL – leak detection log; LEPRE – litho-elastic property report
Group 4 serial number of the vehicle. The Serial number of the vehicle in normal order of march. Vehicles assigned to headquarters will be grouped with HQ vehicles and given small serial numbers. [4]: 9 It was normal to adopt a convoy order number in a logical format, HQ vehicles would be numbered 1-10, 1st platoon 11-20, 2nd platoon 21-30 etc.
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A report would include the animal's or group's identification number, the premises identification number where the event took place, the date of the event, and the type of event, as slaughter or a sighting of the animal. In 2004, the U.S. Government asked farmers to use EID or Electronic Identification ear tags on all their cattle.