MS Directional Test Questions and Answers 2023 with
complete solution
What are the three parameters actually measured in a survey
Inclination
Azimuth
Measured Depth
What is the aproximate inclination of a horizontal well
90 degrees
If the well is drilling due west, how would this be expressed as an Azimuth and
what are the units?
270 west
Which town does the 0 degree of longitude pass? Which country is that in? What
is it called?
Greenwich England
Prime Meridian
What defines the international date line
180 from Prime Meridian (Pacific Ocean)
If the equator has zero degrees of latitude, what is the latitude of the North Pole?
90 degrees
Which depth is measured and which is calculated, MD or TVD
Measured - Measured Depth
Calculated - True Vertical Depth
What does RKB & DF stand for, and what do they have to do with the depth of a
well?
RKB - Rotary Kelly Bushing
DF - Drill Floor
Used for reference
What is the difference between drift and inclination
Inclination - Angle of wellbore parallel to direction of earths gravity
Drift - Inclination greater than 90 degrees (up)
What are the three references for North usually used in directional surveying?
Magnetic North
Grid North
True (Geographic) North
When is grid north and True north the same?
Only at a central meridian
If a well bore survey has a magnetic Azimuth of 125 and the declination for that
location 2 East, what is the true north azimuth?
127
Declinations
West - subtracted
East - added
Drilling with a highside (gravity toolface) of 135 r would do what to a wells
trajectory?
complete solution
What are the three parameters actually measured in a survey
Inclination
Azimuth
Measured Depth
What is the aproximate inclination of a horizontal well
90 degrees
If the well is drilling due west, how would this be expressed as an Azimuth and
what are the units?
270 west
Which town does the 0 degree of longitude pass? Which country is that in? What
is it called?
Greenwich England
Prime Meridian
What defines the international date line
180 from Prime Meridian (Pacific Ocean)
If the equator has zero degrees of latitude, what is the latitude of the North Pole?
90 degrees
Which depth is measured and which is calculated, MD or TVD
Measured - Measured Depth
Calculated - True Vertical Depth
What does RKB & DF stand for, and what do they have to do with the depth of a
well?
RKB - Rotary Kelly Bushing
DF - Drill Floor
Used for reference
What is the difference between drift and inclination
Inclination - Angle of wellbore parallel to direction of earths gravity
Drift - Inclination greater than 90 degrees (up)
What are the three references for North usually used in directional surveying?
Magnetic North
Grid North
True (Geographic) North
When is grid north and True north the same?
Only at a central meridian
If a well bore survey has a magnetic Azimuth of 125 and the declination for that
location 2 East, what is the true north azimuth?
127
Declinations
West - subtracted
East - added
Drilling with a highside (gravity toolface) of 135 r would do what to a wells
trajectory?
