Well Control Method on Surface BOP
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Tag: Drilling
Well Control Simulator HD
For iPad only
Description
Well Control Simulator provides a graphical very useful tool for training of roughnecks, derrickmen, drillers and students in the well control procedures.
– Interactive System: no pre-set methods;
– Ability to apply methods: Driller’s method, wait and weight, dynamic volumetric and static volumetric (lubricate and bleed);
– Hydraulics and Hydrostatics;
– Behavior of the kick;
– Applied with subsea stack and surface stack;
– Set well with until 4 sections: riser, casing, liner, open well;
– Set Drillstring with drillpipe1, drillpipe2, heavy weight, drillcollar1, drillcolar2
Kick Model in this simulator:
The model assumes that the kick starts as a single bubble at the bottom of hole and migrates upward as a single bubble from the bottom to the surface. In underbalanced condition (BHP<Form Pressure) during control, the single bubble volume is incremented with the inflow volume from formation to the well.
Notes:
– In this simulator, the student inputs the parameters of the kick and applies a method to control.
– No drilling. For drilling simulation and kick detection, check the Drilling Simulators apps available in our portfolio”.
– Visit the our website for User’s Guide.
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Drilling Simulator 3 – New Version 2.0 – iPhone version
Drilling Simulator 3
designed for both iPhone and iPad
New Version 2.0 now available on the App Store !!!
Drilling Simulator 1:
– Drilling on vertical well, kick detection, shut-in, stabilisation of pressures (sidpp, sicp, kick volume), save to iCloud to import from other app “Well Control Simulator”.
Drilling Simulator 2:
all of drilling simulator 1 PLUS Direcional and horizontal wells, well control using 01 choke and 01 single kick bubble on borehole and graphical analysis.
Drilling Simulator 3 (This App)
all of drilling simulator 2 PLUS:
1 – until 03 single kick bubbles on the borehole simultaneously
2 – standpipe manifold and choke manifold with 02 chokes and straight through
3 – Complications: failures schedule with Random option:
– Mud Pumps 1 and 2 “power end failure” or “fluid end failure”,
– Chokes 1 and 2 “plugged” or “washed”,
– One Drill Bit Nozzle “plugged” or “washed”
New in the next update (version 2.0 – Coming soon):
– Improved circulation options with subsea valves upper kill & lower kill & upper choke
– On subsea wells, now it is possible to circulate kill mud in the kill line & riser after filling choke line with kill mud weight, keeping bop closed.
– On surface wells, added upper kill line, upper choke and a check valve in kill line
– improved visual of the gauges.
Visit our Portfolio on the App Store
for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
Visit our website for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
Share this:
Drilling Simulator 3 – New Update 2.0
App designed for both iPhone and iPad
New Version 2.0 coming soon on the App Store !!!
Drilling Simulator 1:
– Drilling on vertical well, kick detection, shut-in, stabilisation of pressures (sidpp, sicp, kick volume), save to iCloud to import from other app “Well Control Simulator”.
Drilling Simulator 2:
all of drilling simulator 1 PLUS Direcional and horizontal wells, well control using 01 choke and 01 single kick bubble on borehole and graphical analysis.
Drilling Simulator 3 (This App)
all of drilling simulator 2 PLUS:
1 – until 03 single kick bubbles on the borehole simultaneously
2 – standpipe manifold and choke manifold with 02 chokes and straight through
3 – Complications: failures schedule with Random option:
– Mud Pumps 1 and 2 “power end failure” or “fluid end failure”,
– Chokes 1 and 2 “plugged” or “washed”,
– One Drill Bit Nozzle “plugged” or “washed”
———-
New in the next update (version 2.0 – Coming soon):
– Improved circulation options with subsea valves upper kill & lower kill & upper choke
– On subsea wells, now it is possible to circulate kill mud in the kill line & riser after filling choke line with kill mud weight, keeping bop closed.
– On surface wells, added upper kill line, upper choke and a check valve in kill line
– improved visual of the gauges.
iPad screenshots:
SURFACE WELL: DRILLING
SUBSEA WELL: WELL CONTROL APPLYING THE DRILLER’S METHOD, WITH COMPLICATIONS:
SUBSEA WELL: CIRCULATING KILL MUD IN THE KILL LINE WITH RETURN TO RISER, KEEPING BOP CLOSED:
SUBSEA WELL: CIRCULATION COMPLETE WITH KILL MUD IN THE RISER AND BOP OPEN:
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Wait and Weight method on Directional Wells
Wait and Weight method on Directional Wells
During drilling operations on oil wells, there may to occur the inflow of formation fluids into the well, which is an undesirable condition. The driller should detect such events and shut-in the well immediately and to record informations corresponding to stabilization of pressures SIDPP (Shut-in Drillpipe Pressure) and SICP (Shut-in Casing Pressure) and the volume gain.
There are two methods more used to well control when the drill string (drill bit) is in the bottom of borehole (normally on drilling when reaches a formation with pressure bigger relative to the bottom hole pressure): The Driller’s Method and the Wait and Weight Method (also named Engineer ‘s Method).
The Driller’s Method is performed with two circulations. The first circulation with the original fluid to circulate the influx out of well and the second circulation to fill the borehole with a new fluid. This method can be started immediately after shut-in the well.
The Wait and Weight Method is performed just with a single circulation with the new fluid, but is necessary to wait a lag time until to prepare the new fluid to start the method.
The choice of the method
The choice between these two methods is a controversial question among professionals of oil & gas, but if the rig has already the new fluid available to control the well (the hydrostatic pressure of the new fluid is equivalent to the formation pressure), the Wait and Weight method is aplied and the control will be just with a single circulation in two steps:
Wait and Weight Method
Step 1
Replacing the original fluid in the drill string with the new fluid circulating until the drill bit. Start pump and bring the pump speed until the slow circulation rate, keeping the circulating pressure according the table “Pressure versus Pumped Strokes”, starting with the Initial Circulating Pressure (ICP) and ending with the Final Circulating Pressure (FCP).
ICP = SIDPP + Circulating Pressure @ Slow Circulating Rate (recorded previously).
FCP = Pressure(@ scr) x New Fluid Density / Original Fluid Density
Vertical Wells
On vertical section, the rate “pressure drop / stroke” is constant and the calculations can be made in 10 steps.
Directional Wells
On deviated section, starting on Kick-Off Point (KOP), the rate “pressure drop / stroke” is not constant. The calculations will consider the steps by 100 strokes each.
Step 2
Continue the circulation with the new fluid to fill the all annular until the surface keeping the circulating pressure constant equal to FCP – Final Circulating Pressure.
Operational Limits
It is very important to monitor operational limits during the circulation to avoid fracture of the formation, usually at the shoe depth of the last casing.
The advantage of the “Wait and Weight” method is to provide a lower resultant pressure at the shoe depth before the gas reaches the shoe depth, that is, when the new fluid passes through the drill bit, increasing the hydrostatic pressure in the annulus before of the gas to reach the shoe depth.
Conclusion
The Wait and Weight method is advantageous when the rig has already the new fluid available to immediate circulation. Normally the new fluid need a lag time to be prepared. (1) On well closed, an influx of gas is moving up continuously and pressurizing the borehole all the time. (2) The calculations to control directional wells are relatively complex.
If it is not possible for the new fluid to reach the annulus before the gas reaches the shoe depth, due to (1) the lag time to prepare the new fluid or (2) the volume of the drill string is greater than the volume of the annulus above the gas until the shoe depth or (3) the difficulty to calculations on directional wells or (4) formations with low fracture pressure on deepwater for example, it is recommended choose the “Driller’s Method” to start immediately after the shut-in the well, holding the circulation pressure equal to Initial Circulating Pressure until the circulation of the total volume of the annulus and to replace the fluid only in the second circulation of this method.
I hope that this simple explanation about the Wait and Wait method on directional wells helps on choicing the method most efficient.
Well Control Methods apps: |
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Well Control Worksheets apps: |
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for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
Visit our website for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
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Wait and Weight Method 2.0 for iPhone and iPad
Wait and Weight Method
for iPhone and iPad
now available n on the App Store
new version 2.0
– support for directional 2D wells
– compatibility with iPhone X
– several improvements
———
This application uses the basic calculations of the Wait and Weight Method to control oil wells after the occurrence of kick during drilling operations on floating platforms and landing rigs.
It is an useful tool to import data files to fill kill sheets from our apps: (Driling Hydraulics, Drilling Simulator, Kick Game, Kick Tolerance, LOT Simulator, Kick Game, MPD Simulator, Well Control Methods and Well Control Simulator) available for sale in our portfolio on the App Store.
It is can be applied on the field and also help in the understanding of the Wait and Weight method of well control.
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iPhone X
vertical well and directional well
iPad
Vertical well
iPad
Directional well
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for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
Visit our website for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
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New App Directional Drilling Hydraulics
Directional Drilling Hydraulics
Designed for iPhone and iPad
Now available on the App Store
The Directional Drilling Hydraulics provides to directional drillers, drillers, tool pushers, engineers, chemists, students and other professionals in the petroleum industry a productivity tool helpful in drilling of oil wells for hydraulic calculations on directional and horizontal wells, optimization of the penetration rate and useful to help on the decision on selection of bit nozzles.
This App can import data files from App “Directional Drilling” and others available in our portfolio on the App Store:
– Directional Drilling
– Drilling Hydraulics 1 and 2
– Drilling Simulator 1, 2 and 3
– Leak-Off Test Simulator
– Kick Game
– Kick Tolerance
– MPD Simulator
– Well Control Methods
– Well Control Simulator
iPhone X version
iPad Version
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for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
Visit our website for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
