Page 161 - Practical Well Planning and Drilling Manual

Section 2 revised 11/00/bc 1/17/01 12:04 PM Page 137

Preliminary Work For the Drilling Program [ ]
2.1.5

12.25 in hole at 2450 m 4.0 days
9 5/8 in casing 2.0 days
8 1/2 in hole at 2900 m 4.0 days
TD logging 3.1 days
Testing 20.0 days
7 in liner 2.0 days
Abandon well 3.0 days
Release rig 1.0 days
Weather downtime 5% 2.5 days
Rig downtime 5% 2.5 days
TOTAL: 55.6 days

WELL COST ESTIMATE(see attached for details) :

Rig Move: $ 910,565
Drill, Log, & Suspend: $ 4,155,266
Compl. & Test: $ 1,679,447
TOTAL Base Estimate: $ 6,745,278
Contingency: $ 851,099
GRAND TOTAL: $ 7,596,377

Daily Operational Cost: $ 79,063

Costs broken down by cost code. The next level of detail gives a
cost breakdown by code. Times and depths relevant to the estimate are
carried forward from the front sheet. Some totals are calculated by this
sheet (such as rig rate x days), and some of the figures come from the
next sheet in the workbook.
The sheet is set out in three sections: the left column shows a code
and description for each line, the middle set of columns are used to
enter time or depth-dependent rates, and the right set of columns
either multiplies time or depth-related costs by the relevant figure, or
takes input from the next sheet. Most departments that require cost
estimates will be happy with the summary and costs by code sheets and
will not need further levels of detail. (See Fig. 2-3.)

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