API RP 92U:2008 pdf download

API RP 92U:2008 pdf download.Underbalanced Drilling Operations.
3.1.3
bleed-off line
Part of the pressure containing equipment on a snubbing stack that provides a means of bleeding off trapped welibore pressure
3.1.4
certified
Infers that components of the pressure containing system have been manufactured and maintained under a quality program to ensure conformance with their design specification.
During shop servicing, certification must be performed by an API or ISO-licensed manufacturer or company or technical expert that meets the requirements of IRP 2, SectIon 10.2.2.
3.1.5
circulating media
Includes both injected and produced fluids, as well as their mixtures,
3.1.6
circulation system
The circuitous path that the drilling fluid travels. Beginning at the main rig pumps, the primary components include the surface piping, the standpipe, the rotary hose, the kelly or the top dflve system, the drill pipe, the bottomhote assembly (BHA) including the drill collars, motor or turbine (if applicable) and bit nozzles, the various annular geometries of the open hole and casing strings, the BOPs, the RCD, the tlowline, the UBD choke manifold, the fluids- gas-solids handling equipment, the drilling/production fluid storage tanks, the venting/flaring/recovery system for produced gas, the centrifugal pre-charge pumps and back to the main rig pumps.
3.1.7
closed circulation system
A system where the c*rculating meum is managed such that all gases are vented to a flare system or otherwise safely vented. Systems using gas recovery to process or recycle gas represent an enhancement to the dosed circulating system.
3.1.8
closed cup flash point
CCFP
ASTM D93 Pensky-Martens dosed cup tester,
3.1.9
coiled tubing
CT
Steel pipe flexible enough to be stored on and deployed from a reel. Used to replace jointed pipe in certain types of drilling, completion, and workover operations
3.1.10
coiled tubing (CT) drill string
Includes all equipment from the drill bit up to and Induding the rotating joint on the CT spool. The drill string refers to all Bl-IA.s, continuous tubing and pressure control devices in the continuous tubing. The drill string also refers to any fishing BHA required to be run into the hole to recover portions of CT drill string inadvertently left in the well.
coiled tubing (CT) stripper
The uppermost packing element on the coiled tubing BOP stack that enables the CT to be deployed into the well under pressure
3.1.12
consequence mitigation and recovery preparedness measures
Necessary to limit the consequences of the hazardous event or aimed at reinstating or retumang to a normal situatn.
3.1.13
control device
CD
A drill-through device with a seal that contacts and seals against the drill string for the purpose of controlling the
pressure or fluid flow to surface; can be either rotating or non-rotating.
3.1.14
critical sour well
Any well from which the maximum potential 112S release rate is greater than:
— 0.01 cubic meters per second (rr?Is) or greater and less than 0.1 m3/s and whld is located withIn 500 meters (m) of the boundaries of an urban center:
— 0.1 m3/s or greater and less than 0.3 m3/s and which is located within 1.5 km of the boundaries of an urban center:
— 0.3 m3/s or greater and less than 2.0 m3/s and which is located within 5 km of the boundaries of an urban center; or
— 2.0&/s.
3.1.15
diverterfannular preventer
An annular-type preventer that is designed to be closed around the drill string to contain wellbore pressure, and may be a rotating or non-rotating type, and designed for various working pressure ratings depending on manufacturer specifications.
3.1.16
downhole isolation valve
DIV
A valve designed to be placed in the wellbore to Isolate formation pressures enabling equipment to be run and recovered from a well,
3.1.17
drill pipe
Drill pipe refer to traditional drill pipe with tool pints and tubing with connections suitable for drilling service.
3.1.18
drill string
Includes all equipment from the drill bit to and including the stabbing valve at surface. The drill string refers to all BHAs, jointed or coiled tubulars and pressure control devices run into the hole. The drill siring also refers to any fishing BKA required to be run into the hole to recover portions of drill stflng inadvertently left in the well.
3.1.19
elastomer seals
Jl elastomenc seals that contain any weilbore pressure within the pressure containing system. These seals are not limited to the ram type preventers but include all seals (0-ring, ram shaft. etc.) exposed to the wellbore environment that prevents the wellbore pressure from escaping outside the pressure containing system.