Chapter 4: Getting Started
Accessing and Managing Pipe Inventory
When the Tubular > Pipe Inventory spreadsheet is accessed for the
first time, it displays an inventory of casing for the OD corresponding to
the OD designation in the Wellbore > Casing and Tubing Scheme
spreadsheet for the string that is currently selected. The pipe inventory
for a different OD can be selected using the Select OD pull-down list on
the Template toolbar. The entire pipe inventory for all sizes can be
displayed by selecting All at the top of this list box.
Select the OD that you want to view
data for using this selection list.
The pipe inventory is automatically sorted on the basis of the three keys
specified in the Sorting dialog box. The default key settings are OD
(primary), weight (secondary), and grade (tertiary) which are accessed
from View > Sorting dialog box.
The Pipe Inventory Catalog (accessed by using the Edit > Import from
Catalog and Edit > Export to Catalog commands when the current
view is the Pipe Inventory spreadsheet) contains a built-in API catalog
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that contains all API casing, as listed in Table 1 of API Bulletin 5C2, as
well as API line-pipe in the range of 22-42 inches OD.
Default performance properties for API line pipe are calculated on the
basis of API Bulletin 5C3 formulations for internal yield pressure
(burst), pipe body yield strength (axial), and collapse pressure. For
collapse pressure ratings determined by this method, be aware that the
API Bulletin 5C3 collapse pressure formulations are, in large part,
empirically derived from testing on materials of greater minimum yield
strength and tubes of lesser D/t (diameter-to-wall thickness) ratio than
are typical of API casing. API does not recommend using the 5C3
collapse formulations for line pipe, but it does state in § 2.4 of 5C3 that
“For line pipe having a yield strength and D/t falling within the limits of
the sizes and thickness listed in API Specification 5CT, application of
the formulas in 2.2 (the API collapse formulas) should yield reasonable
estimates of minimum collapse pressure.” Sound engineering judgment
is recommended when using these line pipe ratings.
Each valid entry (or row) in the Tubular > Pipe Inventory spreadsheet
defines a pipe that is available for manual, graphical, or minimum-cost
design. To be considered a valid entry, every cell in a row, except “In
Inven.”, must contain a legitimate value. By default, the initial contents
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