General
Specific Program Modules(brief description)
Well Configuration Page
This is the "nerve centre" of the program. Here you define your drill string, the casing scheme, the hole size, hole depth and pump strokes,
and you will get an instant calculation of Pump Pressure and all pertinent geometric well data (string volume, bottom's up, open hole annulus volume, etc).
This page also has graphical presentation of a) the System Pressure Loss down thru the drill string and up thru the annulus, b) fluid velocities in all string components and
annuli sections. The page also has a feature to graphically present the well trajectory, as defined in the "Active Survey Listing". The BHA components are colored in on the trajectory in orange.
Hydrostatic Pressure EvaluationNew feature in Version 13.0
Pump a fluid train consisting of up to 5 different fluids, each with user-defined weight and volume, around the well bore, and evaluate if any of 4 specified formations go under-balanced during the process. Calculations can be performed for a vertical hole, as well as for a deviated / horizontal well (using the current active survey listing). Plot relevant hydrostatic pressures versus total fluid pumped, including actual over-balance on each of the 4 user-defined formations. Fluid positions will be plotted on bottom-most two plots WHILE fluids are being pumped. Estimation of Hookload is also plotted(new in version 14.2).
Ton-Miles & Hookload Calculations
Hookload and Ton-Miles calculations for any well profile - vertical, deviated as well as horizontal. Uses formulas from the IADC Drilling Manual and the green "Drilling Data Handbook"
Hydraulics Page
The drill string and casing scheme data will automatically be transferred to this page from the Well Configuration page.
Calculates pressure losses throughout the entire well system, i.e. in each drill string component, through BHA components (*), through the bit and up through each of potentially up to 50 different annuli sections. Based on mud rheology, flow rate, nozzle selection, etc.
All formulas are taken from MI's Drilling Fluids Manual.
(*) Select specific BHA components, such as mud motor, MWD, LWD, Rotary Steerable Systems (PowerDrive) etc in various sizes, and the program will calculate the actual pressure drop over each component using the Directional Drilling Contractor's formular. So far only one DD contractor's formulars have been coded.
Single String Cementation
Cement any string inside any previous casing size with any open hole size (yeah, yeah... must be physically possible, of course).
Easy pull-down menu selection of previous and new casing strings.
Easy pull-down menu selection of cementing contractor and additives. Add your own chemicals, and units, ONCE, and save in database.
Balanced Cement Plug
Define cement stinger, running string, casing scheme and cement chemical additives using pull-down menus.
Type in a few pertinent well data (hole data, plug length, top of plug, %excess, water ahead, under-displacement, etc), and the entire job will be calculated.
Surveys page
The program can store 5 surveys, each with up to 1000 survey stations. User Interface allows entering surveys, selecting various plots, and performing interpolation.
The current "Active Survey Listing" will be used in other modules, when applicable (i.e. in Hole Cleaning module, Horizontal Kill Sheet, Horizontal Well Control Simulator).
Version 11.1: 3D Virtual Reality viewing of surveys now possible. Use dedicated icon on "Surveys" page to access this feature. Also, refer to ReadMe file included with the Installer (Set-up program).
Hole Cleaning Evaluation
This is a new feature. Not bug tested, and not fully developed yet. However, presently, it will calculate - based on the Preston Moore Correlation - Slip velocity,
Cuttings Transport Ratio and the effective Cuttings Transport Velocity - for vertical holes as well as for inclined and HORIZONTAL well bores.
This feature will be developed further in the near future to take into account the ROP, porosity, etc.
Pre-Recorded Well Date page
The drill string and casing scheme data will automatically be transferred to this page from the Well Configuration page.
This page gives you all the pertinent data required.
Vertical Kill Sheet
This is for VERTICAL holes, as taught in Well Control schools.
Enter kick data and shut-in pressures. Program will produce the "kill sheet" with step down charts and graphs.
Print and bring to the floor (as a GUIDANCE ONLY !).
Horizontal Kill Sheet
This is for HORIZONTAL holes, - and is not normally taught (in depth) in Well Control schools.
This module uses the survey data from the "Active Survey Listing".
Enter kick data and shut-in pressures. Select Kill Mud Weight. Program will produce the "kill sheet" with step down charts and graphs.
Print and bring to the floor (as a GUIDANCE ONLY !).
Horizontal Well Control Simulator
Simulates circulating out a gas influx using the Drillers Method, from the depth of the bit, in a wellbore with any given trajectory - vertical, deviated or horizontal.
Based on constant-bottom-hole-pressure, and using a user-defined temperature profile, this module calculatesand plotsthe following data, as the gas is being circulated out (first circulation) and as kill fluid is being circulated all around (second circulation):
- Influx position in annulus
- Influx height
- Influx volume
- Pit gain
- DPP and CP, as read on the choke panel (assuming constant bottom hole pressure is maintained)
- Pressure at casing shoe
- Shoe fracture pressure (which is constant, of course)
Print out the graphs and bring to the rig floor, along with your Kill Sheet, for use as GUIDELINES (only) during the actual well killing operation.
Kick ToleranceNew feature in Version 14.2
Calculates, based on an assumed kick intensity (ppg), the Kick Tolerance (in barrels) for a gas influx taken while drilling, at the bit. Uses current well configuration and LOT/FIT data.
Brine Calculations & Salt Tables
Ever needed to know how much salt is required to make xx bbls of x.xx ppg brine from seawater?
Ever needed to know how much x.xx ppg brine should be mixed with XX bbls y.yy ppg brine to produce YY bbls of z.zz ppg brine ?
Well... this module will tell you. Presently includes: NaCl, CaCl2 and KCL.
Detailed Annuli Data
This is a pop-up window showing various calculated date for EACH separate annulus section, for the given Well Configuration:
- Fluid velocity (ft/min)
- Flow regime (Laminar or Turbulent)
- Pressure loss (psi)
- Length (ft)
- Capacity (bbl/ft)
- Slip Velocity (assuming vertical hole)
- Cuttings Transport Ratio (assuming vertical hole)
- Cuttings Transport Velocity (assuming vertical hole)
User-defined Plots
- Pump pressure vs Bit depth (with up to 5 curves for YP or PV)
- Hookload vs Bit Depth
- ECD vs Bit Depth
- Hole fill vs Bit Depth when tripping out
Liner Cementation
Under construction.
The program has many more features. This page will be updated as I get time. Meanwhile, see the "Screen Shots Page" for more details.
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