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An API well number or API number is a "unique, permanent, numeric identifier" assigned to each well drilled for oil and gas in the United States. [1] The API number is one of many industry standards established by the American Petroleum Institute. Custody of the API Number standard was transferred in 2010 to the PPDM Association.
API number, a unique identifier applied to each petroleum exploration or production well drilled in the United States. API unit, a standard measure of natural gamma radiation measured in a borehole. [16] "Non-API", an item (e.g., tubular connector) not conforming to API standards "Non-API", (informal) slang term for anything out of the norm.
Some gas and condensate fields in the North Sea are developed with subsea templates where multiphase flow meters are installed for each well and virtual flow meters for each well are taken in use as a backup for and redundancy to the flow meters. [40] [41] Process models and phase behaviour models are other implementations of rate estimation ...
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CITHP – closed-in tubing head pressure (tubing head pressure when the well is shut in) CIV – chemical injection valve; CK – choke (a restriction in a flowline or a system, usually referring to a production choke during a test or the choke in the well control system) CL – core log; CLG – core log and graph; CM – choke module
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The drilling, completions, and interventions functions of the upstream oil and natural gas industry need universally available standards to facilitate the free flow of technical data across networks between oil companies, service companies, drilling contractors, application vendors and regulatory agencies.
The API range – now ISO 3183. E.g.: API 5L Grade B – now ISO L245 where the number indicates yield strength in MPa; ASME SA106 Grade B (Seamless carbon steel pipe for high temperature service) ASTM A312 (Seamless and welded austenitic stainless steel pipe) ASTM C76 (Concrete Pipe) ASTM D3033/3034 (PVC Pipe) ASTM D2239 (Polyethylene Pipe)