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Well Control Help

"Well Control" is the drilling, cementing, stimulation, coiled tubing personnel best companion. Calculate on the fly: 1- Well pressure stability 2- Gas Kick killing pressures, kick fluid property, maximum expected wellhead pressure. 3- Casing/DP Running and POOH swab and surge pressures due to turbulence, pipe run, pipe acceleration etc.. 4- NaCl, KCl, NH4Cl and CaCl2 brine mixing 5- Dilution/Weighting of drilling fluids using lighter/heavier fluid. 6- Weighting mud fluids using Hematite, Barite or Sand. 7- Calculates hole capacity - DP, Annulus, Rat Hole capacities (can be used to calculate any type of well profile)

(scrollable screen)

Well Control Units Setup (scrollable screen) The first thing to do before start using the "Well Control" is to setup user preferred units. This is done by navigating to the iPhone/iPad/iPod Settings and clicking "Well Control" Preferences. User can use any mix of units and accordingly the corresponding output shall be displayed. Note: If user decides to change the units, it is mandatory on iPhones and iPads using OS 4.0 and higher, to terminate the software and start it again.

Fluid Control Calculation Module (scrollable screen) The module runs as a calculator / convertor between density, frac gradient, pore gradient, hydrostatic pressure, frac pressure and pore pressure. All parameters (either inputs or outputs) can be synthesized using the sliders/textfields for quick and accurate calculation.

Gas Kick Control Calculation Module (scrollable screen) The Gas Kick Control module uses the "Well Profile" modules data along with remaining data entered in the form to compute: 1) kick height at different depths, 2) kick fluid density at different depths, 3) Casing Pressure while circulating the kick out. The module uses the two main techniques of kick control: 1) Driller technique, which uses same density mud to circulate the kick out. 2) The Weight and Wait technique, which uses a weighted mud to circulate the kick out. Note: The "Well Profile" module allows user to enter, save and retrieve well profiles data for further calculations of Gas Control Pressures The Well Profile module can be accessed from within the "Gas Control" Module or directly from the main menu.

Swab and Surge Calculation Module (scrollable screen) The module calculates the swab or surge pressure attributed to the main 3 phenomenas involved with the pipe RIH/POOH: 1- The thixotropic gel breaking pressure required to initially move the pipe 2- The pipe pulling/running speed and induced steady/turbulent movement 3- The pipe acceleration induced pressure. The module computes also the Equivalent Mud Density EMD for above pressures in addition to hydrostatic pressure. Note: The "Well Profile" module allows user to enter, save and retrieve well profiles data for further calculations of Gas Control Pressures The Well Profile module can be accessed from within the "Gas Control" Module or directly from the main menu.

Brine Mixing Calculation Module (scrollable screen) The module calculates the brine density, percent of salt weight by weight of water , weight of salt per unit volume of water, brine volume factor for: 1- NaCl, Sodium Chloride. 2- KCL, Potassium Chloride. 3- NH4Cl, Ammonium chloride. 4- CaCl2, Calcium chloride. The module calculates also, the quantities of salts required to mix a specific volume of brine and the hydrostatic pressure of a specific column of brine.

Fluids Mixing Calculation Module The module calculates the volume of a lighter/heavier fluid required to dilute/weight a specific volume of mud or fluid. The initial fluid density should be first entered, then the diluting/weighting fluid density. Finally, the required density should be selected. The Required final density should fall in between the base fluid density and the added fluid density.

Fluid Weighting Calculation Module The module calculates the weight of a weighting agent required to increase the density of a fluid to a specific density. One of three weighting agents can be used to weight the fluid: 1- Barite 2- Hematite 3- Sand 4- Others (for any other added material, user needs to enter the Absolute Volume of the product in the specified units) User can use any other type of weighting material by adding manually the material "Absolute Volume" figure. The module calculates also, the quantities of weighting agent required to mix a specific volume of weighted fluid like mud, spacer etc...

Well Profile Calculation Module (scrollable screen) The module calculates the inner volume of an inner string and the outer volume between the inner string and previous casing/OH. For tapered strings and two sections open holes, the depths, ODs and IDs shall be entered as they appear from top to bottom in the wellbore. The Inner string can be: 1- Tapered Drill pipe string with 2 sizes 2- Liner string run on DP 3- Tapered Tubing String with 2 sizes 4- Coiled Tubing String The module outputs: 1- Annular volume 2- Inner string capacity 3- Total capacity 4- Rat hole capacity if any NOTE: The "Well Profile" module allows user to enter, save and retrieve well profiles data for further calculations of volumes, Gas Control and Surge and Swab Pressures The Well Profile module can be accessed from within the "Gas Control" and "Surge and Swab" Modules or directly from the main menu.

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WellControlHelp

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