Drilling Engineering

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Calculation of the total drillingCost for the well 112-87

Total drilling costs for drilling is calculated as follows:-

CF = Cr+ CT+ CA+ CC+ CL

Where:

CF = average drilling and completion cost,

Cr = rig operating cost, $/hr.

CT = tangible material cost, $

CA = auxiliary equipment costs, $.

CC = intangible material costs, $.

CL = logistic services, $.

1- ) To calculate rig cost (Cr ) :

=8750*(37) +200*(37) +7300

=323750+7400+7300

=338450 $

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2- ) To calculate material tangible cost ( CT ) :

=163*35+65.68*950+44.05*2395

+33.15*2602+39.97*2602+20000+4200+6600+27000+40000+40

00+12000

=413659 $

3- ) To calculate material intangible costs ( CI ) :

=32000+68000+25000+75000+

+49300+56000+21600

=326900 $

4- ) To calculate auxiliary equipment costs (CA ) :

=27900+14400+10080+5000+

49950+13750+350000+10500+15480+4500+40000+2400

=543960 $

5- ) To calculate logistic services costs ( CL ):

=10200+125000

=135200 $

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The average drilling and completion cost ( CF )

=1758169 $

The cost of all the items mentioned in the above calculations is illustrated

in the following table:

ITEM COST, $Casing

Wellhead and manifoldHamerring

Tubing completion equipment

Downhole equipment

21185937800400040000

120000

Tangible material 413658Casing cementing and accessoriesMud and chemicalsCompletion fluidCement additives

Bits and core headsFuel and lubricants

Other material

32000

680002500075000493005600021600

Intangible material 326900

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Casing and tubing services

Mud loggingMud engineeringCement unit and

operator Directional drilling

MWDElectric logs

Jars-fishing stabsCentrifuges-hi G dryer

Casing circulating packer

Casing perf.Other services

27900

14400100805000

499501375035000010500154804500

400002400

Auxiliary services 543960

Logistic services 135200

Drilling rig 338450Total well cost 1758169

Drilling Engineering

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