API RP 59:2006 pdf download

API RP 59:2006 pdf download.Recommended Practice for Well Control Operations.
3.1.21 borehole pressure: Total pressure exerted in the well bore by a column of fluid andJor backpressure imposed at the surface.
3.1.22 bottom-hole pressure: Depending upon the context, either a pressure exerted by a column of fluid contained in the well bore or the formation pressure at the depth of interest.
3.1.23 broaching: Venting of fluids to the surface or to the seabed through channels external to the casing.
3.1.24 bullheading: A term to denote pumping into closed-in well without returns.
3.1.25 casing pressure: See Backpressure.
3.1.26 casing seat test: A procedure whereby the formation immediately below the casing shoe is subjected to a pressure equal to the pressure expected to be exerted later by a higher drilling fluid density or by the sum of a higher drilling fluid density and backpressure created by a kick.
3.1.27 casing shoe: A tool joint connected to the bottom of a string of casing designed to guide the casing past irregularities in the open hole; usually rounded at the bottom in shape and composed of drillable materials.
3.1.28 choke: A device with either a fixed or variable aperture used to control the rate of flow of liquid andlor gas.
3.1.29 choke manifold (control manifold): The system of valves, chokes, and piping to control flows from the annulus and regulate pressures in the drill string/annulus flow system.
3.1.30 choke line: The high-pressure piping between BOP outlets or welihead outlets and the choke manifold.
3.1.31 choke pressure: See Backpressure.
3.1.32 circulating head: A device attached to the top of drill pipe or tubing to allow pumping into the well.
3.1.33 closing unit: The assembly of pumps, valves. lines, accumulators, and other items necessary to open and close the BOP equipment.
3.1.34 conductor casing or conductor pipe (onshore and boftom-supported offshore installations): A relatively short string of large diameter pipe that is set to keep the top of the hole open and provide a means of returning the upward flowing drilling fluid from the well bore to the surface drilling fluid system until the first casing string is set in the well.
3.1.35 control panel, remote: A panel containing a series of controls that will operate the valves on the control manifold from a remote point.
3.1.36 cut drilling fluid: Well control fluid, which has been reduced in density or unit weight because of entrainment of less dense formation fluids or air.
3.1.37 degasser: A vessel, which utilizes pressure reduction and/or inertia to separate entrained gases from the liquid phases.
3.1.38 displacement: The volume of steel in thc tiibulars and devices inserted and/or withdrawn from the well bore.
3.1.39 diverter: A device attached to the wellhead or marine riser to close the vertical access and direct flow into a line away from the rig.
3.1.40 diverter system: The assemblage of an annular sealing device, flow control means, vent system components, and control system which facilitates closure of the upward flow path of the well fluid and opening of the vent to the atmosphere.
3.1.41 drill pipe safety valve: An essentially full-opening valve located on the rig floor with threads to match the drill pipe in use. This valve is used to close off the drill pipe to prevent flow.
3.1.42 Drill Stem Test (DST): A test conducted to determine production flow rate and/or formation pressure prior to completing the well.
3.1.43 drill string float: A check valve in the drill string that will allow fluid to be pumped into the well but will prevent flow from the well through the drill pipe.
3.1.44 drilling break: A change in the rate of penetration that may or may not be a result of penetrating a pressured reservoir.
3.1.45 drilling spool: A flanged joint placed between the BOP and casing-head or between BOPs that serve as a spacer or crossover.
3.1.46 drive pipe: A relatively short string of large diameter pipe usually set in a drilled hole in onshore operations; it is normally washed, driven, or forced into the ground in bottom-supported offshore operations; sometimes referred to as structural pipe.