search

arbrandt / OPGEE

Oil Production Greenhouse Gas Emissions Estimator
18 stars 4 forks source link

Drilling fuel consumption in the Drilling&Development Tab #466

Closed wennanlong closed 2 years ago

wennanlong commented 2 years ago

The formula of Drilling fuel consumption (M22) in the Drilling&Development Tab does not consider the fraction of vertical wells

Use the following formula

=Drilling_fuel_per_foot_vertical(1-Fraction_wells_horizontal)Field_depthM8+Drilling_fuel_per_foot_horizontalFraction_wells_horizontalLength_lateralM8

qlangfitt commented 2 years ago

Is it because all wells have a vertical portion, and then it adds on energy for the horizontal portions for those wells which have one?

arbrandt commented 2 years ago

The drilling module uses a fixed factor per foot that applies to the whole well depth. Then for the lateral, it gives an "additional" energy use per foot in excess of the usual requirement. That is explained in the documentation. See also the RHS of the energy use tables in Secondary Inputs where it is listed as "gal additional diesel fuel per foot" rather than "gal diesel fuel per foot" for the first table.