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BLUE DRAGON GEOSCIENCE,
LLC
Geologists: Kent Stewart 6:30 AM to 6:30 PM 740-331-2282
Ryan Roda 6:30 PM to 6:30
AM 586-596-6111
XYZ Resources – W77-2H – XYZ County, Pennsylvania -
API# 37-000-00000
MD
|
INCLINATION
|
AZIMUTH
|
TVD
|
VS
|
8057
|
90.3
|
136.00
|
6283.08
|
2477.48
|
08/08/2014 7:50 AM
Type Log(s): Smith
#733 & X42-2H TVD Log
-------------------------------------------------------------------------------------------------------------
Est
inclination projected to Bit
|
90.8
|
Est
Avg. Dip (~300ft)
|
90
|
Bit
TVD @ survey
|
6447
|
Est
Apparent Fm Dip
|
91.4
|
Projected
Target Top
|
6450
|
Ft
from Target Top
|
-3
|
Projected
Target Center
|
6457.5
|
Ft
from Target Center
|
-10.5
|
Projected
Target Base
|
6465
|
Ft
from Target Base
|
-18
|
Projected
Onondaga
|
6476
|
Target
Zone Thickness
|
15
|
Bit Position is ~ 3 ft ABOVE Target Top @ Survey Depth.
Recommendation: allow bit to re-enter target interval at current inclination and re-evaluate when established at dip near target center.
FORMATION
|
TVD Actual
(est)
|
MD Actual
|
Prog TVD
|
Notes
|
Burkett
|
||||
Tully
|
||||
Hamilton
|
||||
Marcellus
|
||||
Cherry Valley
|
||||
Union
Springs
|
||||
Target Top
|
LP @ 6405
TVD
|
|||
Target
Base
|
||||
Onondaga
|
Another SAMPLE HEADER SHEET
BLUE DRAGON GEOSCIENCE, LLC 740-331-2282
Company A – Well 1H
11450 MD 07/12/2013 10:10 AM
Type Log Well 1V
-------------------------------------------------------------------------------------------------------------
MD
|
INCLINATION
|
AZIMUTH
|
TVD
|
VS
|
11450
|
89.50
|
155.70
|
5005.00
|
6751.74
|
Latest Position @ Survey Depth is ~ 10 ft BELOW the Top of the Target
Top of the Target @ Survey Depth is ~ 4995 TVD
Recommendation:
maintain 89.5 deg avg. dip
When bit reaches 11800 MD it should be possible to rotate to
TD
FORMATION
|
TVD (est) Actual
|
MD
|
|
Tully
|
3548
|
3548
|
3502
|
3672
|
3672
|
3638
|
|
Marcellus
|
4814
|
5066
|
4799
|
4956
|
5956
|
4866
|
|
Onondaga
|
4975
|
Geosteering Summary for Well 3H
The Well 3H well was drilled in an updip direction to the
north. Dip was variable from 86 deg in a downfold to about 97 deg. Well was
challenging to steer due to several dip changes and some unexpected dip
variation from offset wells on the same fault block. Dip changed from 93 deg to
96.5 deg till the crest of the first fold at about 2400 VS. Then the formations
dropped quickly into a syncline troughing at about 3000 VS. Drop was about 48
ft in less than 600 ft VS. Dip then rose up again with an avg. between 92.5 and
94.5 deg. There was an unexpected but short lived flattening of dip from about
4500 VS to about 4765 VS with dip dropping to near 90 deg then rising up again
to avg of 93.4 deg till TD.
Total measured depth drilled 10639
ft
Total vertical section drilled ~ 5191
ft Total lateral section drilled ~ 4479 ft
Total section in target zone ~ 3717 ft
Total section in Marcellus ~ 4479 ft
% in Marcellus ~ 100 %
% in Target ~ 83 %
Avg Dip from heel to toe ~ variable from ~ 86 to ~ 97 deg
Overall rise from heel to toe ~ 202 ft
Appx landing point ~ 712 VS/5776 TVD/6134 MD
Well exited target interval several times due to dip changes
aided by a few correlation difficulties. However, rotation was maximized
throughout the well resulting in less doglegs and avoiding slower ROP due to
sliding. ROP was very good for the well as a whole. Well was landed about 100
ft ahead of the planned landing due to bringing the landing point up about 70
ft from planned. Through this early intervention we were able to land near the
top of the target interval as planned. Once dip was confirmed, we drifted to
the base of the target interval in order to prepare for the upcoming fold. Even
though we exited the target around the fold a few times, we were able to secure
it back in fine. We exited the top of target near the end during a flattening
but decided to just go ahead and rotate to TD. I had some concerns
about high dip at the end of the well (which is why we were drilling at the
top, just in case), that was also confirmed by some of the offset wells. However,this did not occur as
seismic predicted it would probably not.
Screen Shot Correlation Example
click to enlarge
Screen Shot Correlation Example
click to enlarge
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