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Emeraude v2.60 – Doc v2.60.01 - © KAPPA 1988-2010
Guided Interpretation #2
•
B02 - 7/22
B02.3
2B
• Analysis of the Shut-in survey
B02.3.1
5B
• Depth match
Make sure that the Shut-in survey is active using the above drop list.
Because of radioactive scale the Shut-in gamma ray does not compare well with the open-hole
curve (Well data). Some correlation is seen below 8770 onwards and can be used for the depth
match. The process of depth matching was covered in Guided interpretation #1.
B02.3.2
6B
• Tool Information
Click on the ‘Tool Info’ option and change the
following settings (Fig. B02.7):
• Apply deviation correction:
Schlumberger PTS
.
• Spinner Blade Diameter:
3.5 in
.
Hit OK to confirm.
Fig. B02.7 • Tool information dialog
In the Schlumberger PTS tool string, PRH usually refers to a channel on which the necessary
deviation correction has already been applied. However, this is an old data set and the
mnemonic is misleading as no deviation correction had been performed, thus the change.
Tool information will not need redefinition for Production #1 as all mnemonics are identical in
both surveys.
B02.3.3
7B
• Spinner reversal
The spinner responses in this example were all stored as positive numbers, and must be
changed before proceeding with the interpretation. The procedure to decide if and where a
spinner should be negative is beyond the scope of this session. However, in the case of the
shut-in period (and in the absence of any cross-flow) it is quite straightforward: up passes
must be inverted.
Click the right hand mouse button in any plot, select ‘Depth Scale’.
Define the Total log range as 8400-9000 ft.
Click on the ‘Total range’ button to set the size of the display window.
Press OK to confirm.
Make the ‘SPIN’ plot visible if it was previously hidden.
Select pass Up1 in the pass toolbar. (You can use highlight to confirm selection of pass).
Click on the ‘Spinner Reversal’ icon in the ‘Survey’ panel (last option down - scroll if
necessary).