EASYDRILL   

DIRECTIONAL DRILLING SOFTWARE
PALMTOP SURVEY CALCULATION AND WELL PLANNING
For the Hewlett Packard 49g+ & 50g Calculators

EASYDRILL is a user friendly, fully menu driven calculator program specifically designed for use by directional drillers. All of the repetitive tasks, including plotting, projections and anticollision calculations are easily performed with a few keystrokes. In addition, a unique Slide Projection routine allows projections to the bit, as well as calculation of the required slide course length needed to obtain the desired inclination and azimuth changes.

EASYDRILL is a survey based planning program. After a survey is calculated, it becomes the tie-on from which a large variety of project ahead options can be accessed. The DD can then decide whether to attempt to get back on the original plan line or create a brand new plan from the current well coordinates.

EASYDRILL was written by a directional driller with over 25 years of field experience.

The flowchart to the left represents the process normally followed by a directional driller while drilling a directional well.
Unfortunately, due to physical or time constraints it is not always practical to carry out all these calculations while on the rig floor.
With EASYDRILL you will be able to perform all the calculations in less time that it takes to make a connection. Furthermore, because all calculations are just a button press away, you will be able to investigate "What If" scenarios that otherwise might be too cumbersome to deal with on the rig floor environment.

EASYDRILL will provide you with the certainty and confidence of knowing, at all times, where your well is with respect to the target or plan, what is the best trajectory to follow, and finally, how to achieve this with the tools at your disposal. With all these resources, plus your experience and intuition, you will be able to drill better wells, easier, faster and more accurately.

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"(Easydrill) has elevated my ability as a directional driller to new heights."
Bill T. Womack Jr.
BHI Directional Drilling Cooridinator Shell EA project, Nigeria
(Read what other Directional Drillers say about Easydrill)

Specifications and Features

Following is a listing of the available project ahead/planning modes. The Tie-On can be the last survey, any survey within the survey file or the bottom of the previous projection/plan.

Trajectory type Required parameters Results Comment
3D Continuos curve to Target Target coordinates. C.L., Inc. Azim. BUR, Walk to specified point. Target coordinates may be shifted.
3D Continuos curve to Target Target Coordinates, Width, Length and Rotation C.L., Inc. Azim. BUR, Walk to 5 Points Calculation to Center, Inner, Outer, Right, Left Edges.
3D Project to M.D. M.D., Inc.,Azim. Resulting Coordinates
3D Project to M.D. M.D. BUR., Walk Resulting Coordinates
3D Project to TVD TVD, Inc., Azim. Resulting Coordinates
3D Project to TVD TVD, BUR, Walk Resulting Coordinates The BUR and Walk are
conveted to an equivalente DLS and TFO.
3D Project to TVD TVD, Horizontal Coords. Resulting M.D.,Inc., Azim
3D Project to TVD Maximum BUR and TFO Resulting Coordinates for 90� landing at the specified TFO
3D Ouija Board Delta Inc., Delta Azim. Dogleg, TFO
3D Ouija Board DLS, TFO, C.L. Resulting M.D.,Inc., Azim.
3D Ouija Board Current and Previous Surveys, Slide Intervals. Effective Sliding DLS. Optionally, Rotating tendency can be accounted for.
3D Ouija Board Current Survey, Slide Intervals, Distance to Bit, Effective Sliding DLS. Inc., Azim. Coordinates @ Bit. Optionally, Rotating tendency can be accounted for.
3D Ouija Board Effective Sliding DLS, Next Kelly Length, Desired Inc + Azim @ Next Kelly Down. Required Slide C.L. and TFO. Optionally, Rotating tendency can be accounted for.
3D Curve then Hold ("J") DLS(1) and Target(*). Resulting "J" profile.
3D Hold then Curve DLS(2) and target(*). Resulting inverted "J" profile.
2D Curve then Hold ("J") Final Angle and Target(*). BUR, Resulting "J" profile. Useful for landings other than 90�
2D Hold then Curve Final Angle and Target(*). BUR, Resulting inverted "J" profile. Useful for landings other than 90�
3D Curve then Hold then Curve DLS(1), DLS(2), Target(*) Coordinates and Inc. and Azim. @ Target. Resulting "S" profile.
3D Curve then Curve DLS(1), Target (*) Coordinates and Inc. and Azim. @ Target. DLS(2), Resulting "S" profile w/o a hold section. Useful for landings other than 90� .
3D Curve then Curve DLS(2), Target(*) Coordinates and Inc. and Azim. @ Target. DLS(1), Resulting "S" profile w/o a hold section. Useful for landings other than 90� .

* The Target can be obtained from the path of another well or plan

The following screens illustrate some of the powerful calculations that can be performed with EASYDRILL


The program is fully menu driven. By pressing function keys F1 to F6 you can access all the program functions. In addition, a screen with a short description of each function key is displayed along with the menu keys. Even the on/off function can be performed from the program, when the calculator wakes up, it does so, automatically, at the Survey menu. Data is normally entered through single value or multiple value input forms as the ones on the left. Full editing of the survey files is possible and 40 average length well files can be stored at one time. A compression (Zip) routine is provided.

The current survey is, by default, the tie-on for all projections. A temporary projections file is automatically set up upon creation of the first projection segment. Thereafter projections can be cascaded at will. You can access the plotting routine at any point. You may also save the temporary projections file into a permanent file and designate it as a plan.
The plotting routine is a travelling cylinder along the plan's path. The displayed inclination and azimuth are the values necessary to parallel the plan. Alternately the inclination and azimuth towards the closest point can be displayed as well as whether the object well is approaching or receding.

Projections can be made to any of an unlimited number of targets. The target can be shifted along and/or across the vertical section plane azimuth and/or up or down.


The Slide Projection routine uses the entered slide intervals and the last two surveys to calculate the sliding DLS. Optionally the program can also take into account the natural building (or dropping) tendency of the BHA. Detailed guidelines on how to estimate these values are found in the manual. Once they are estimated, the program uses these parameters plus the survey to bit distance to obtain a value for the inclination and azimuth at the bit. This projection is automatically stored in the temporary projections file. All the other resources of the program can then be used to calculate the desired inclination and azimuth at the next kelly down depth. Returning to the slide projection routine, the [NEXT] function may be accessed to calculate the needed slide course length that will produce the desired results. This "Next kelly down" projection can, in turn, be compared to the plan or you may access any of the other projection options of the program.

The program is available in versions either for the HP50g, HP49G+ or HP49G calculators. The program must be loaded into the calculator's non-volatile FLASH ROM. This can easily be done by the user with a PC and a link cable. Furthermore the program is also available in a pre-loaded SD flash memory card that can be inserted in the card slot of the HP49g+/HP50g. NOTE: The SD card is only a venue from which it is easier to load the program into the calculator, once loaded the card is no longer needed to run the program and can be put away or used to load the program into another calculator.

Note: There have been some problems reported with the connectivity software that comes with the CD included with the HP50g. Please write to me and I will email you a version that works.

The program will not function until registration. To register simply send the developer the INTERNAL serial number of your calculator and you will promptly receive a registration code. You may download a fully functional HP49G emulator that will allow you to try EASYDRILL on your PC. Try before you buy!!

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I recommend you purchase your HP50g from: http://commerce.hpcalc.org/ - For a loading fee of US$25 you may order your HP50g from this site with Easydrill pre-loaded. Please contact the owner of the site for further details

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