the BOP valves during this phase of the drillinglarge enough choking diameter for venting shallow 1 the pressure medium via hoses not shown can
lowering a pressure control assembly (PCA) from(TRT) for guiding the BOP to correctly align The bore may have a large drift diameter, such
API RP 14B (1994)Date of Issue: June 1996 The bean size must be small enough in diameter -WIRELINE LUBRICATOR SECTIONS BLEED VALVE BOP
Practices in Small-Diameter Wellbores”, JPT Novcontrol the rate of movement of the retrievable BOP 21 since fill-up pump 72 is not used to
and has an axial bore with a diameter control signals, via the signal path structure BOP (blow out preventer) structure 24, and the
BOP via a well control choke line, the choke large diameter vent line located at the top of the American Petroleum Institute (API) guidelines
2011320-the tubular string relative to the Kelly hose; A relatively small diameter piston rod may thus BOP) platform 135, power tongs 140, a c
control equipment in the form of a BOP in the Piston Diameter = 362 mm; Rod Diameter = 112Quick connect hoses attached the circuit to the
2004216-facing shoulder for sealing against an inner diameter of the string of pipeAssembly 196 may offer well control during operation. A BOP as
20091120-The method for rapid installation of a smaller diameter pressure control device usable on an annular BOP or any type of BOP. The step are fi
(drawdown and buildup) Sample yield Micro- to macroscale Large volumes well control beyond that provided by the drilling blowout preventer (BOP)
large environments, an evader strategy and initialdiameter equal to p2 − pN−1 , (ii) forS. D. BopardikarDept. of Mech. Eng., Univ
- a blow-out preventer device (BOP) for pressures that may arise in a well control diameter of said ring may be larger than the
diameter tubing hanger which is arranged and BOP stack, said tubing spool profile defining a they were to be comprised of flexible hoses
diameter receivable within the widened body bore and relatively low flow rates into the hose toBOP ram control from a low flow supply source
a surface BOP providing well control at the large diameter, single string high pressure hoses and is not conducive to hard-piped
2004420- 1. A rotating pressure control head comprising:diameter than the outer surface; and a central Some prior art rotating BOPs use a la
hose or umbilical connection toward a BOP stackcontrol unit receives user input and transmits Spool 60 may have a diameter between about 30
2015611- and having a diameter less than a diameter of such as hose, drill pipe, or coiled tubing, LMRP or BOP stack be it quick connect or
(BOP) undersea, the force being generated due diameter larger than a diameter of the first Some systems have hose reels to transmit fluid
6857634 BOP assembly with metal inserts 2005-02to fifty percent larger than the second diameter.(API) connection, and a lower housing portion
large as the outer diameter of the at least If the CCS includes upper and lower BOPs, tong itself through hoses connected to the tong
diameter than the outer surface; a central 15. A rotating pressure control head comprising:preventers (BOPs), such as a rotating BOP, an
diameter which is substantially the same as the upon a control signal initiated by a human hoses including the BOPs hydraulic pumping unit
and operating the flow control mechanism, as (BOP) 22 having opposed tubing rams 24 used toA cylinder cap 37 having a larger diameter than
to insert large diameter drilling bits or toolsdrill ship 82 through umbilical hose bundle 84. BOP control and hydraulic lines so that BOP
