Page 150 - Practical Well Planning and Drilling Manual

Section 2 revised 11/00/bc 1/17/01 12:04 PM Page 126

[ ] Well Programming
2.1.1

Deviation:

Vertical or deviated well
Kickoff depth
Build/drop/turn rates with inclinations, azimuths, and depths to
define complete wellpath
Target depth, coordinates, and boundaries
Horizontal displacement and azimuth of target
Target constraints showing the actual target area that would be
acceptable, outside of what would be unacceptable
Total well depth MD and TVD
For a horizontal well, more information will be required such as
final hole section azimuth, whether geosteering is to be used, etc.
Surveying requirement—types of tool at which stages, distance
between surveys, computing method to be used, and magnetic
variation for the area
For a well of more than 30˚ maximum planned inclination or with
high anticipated dogleg severities
• Drag and torque calculations, used to optimize the wellpath
if necessary
• Casing wear predictions, used to specify what precautions may
be necessary (such as protector types and quantities, heavy
wall casing at critical points, and special monitoring)
Any relevant data on offset wellpaths that may affect the planned well
Hole and bit sizes with section depths (including pilot hole sizes
where applicable)
Proposed bits and BHAs together with recommended drilling para-
meters and performance expectations

Conductor, casings, and liners—general notes:

Notes on any potential high casing wear problems, how to moni-
tor, preventative actions (such as protector requirements)
Reporting requirements (by job and post-well)

Conductor—driven:

Size, weight, grade, connections, minimum setting depth, and final
blow count (state power setting if adjustable)

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