The goal of rNodal is to provide nodal analysis for oil and gas wells.
You can install rNodal from github with:
# install.packages("devtools")devtools :: install_github(" f0nzie/rNodal" This is a basic example which shows you how to solve a common problem:
zFactor is a R package. Calling from CRAN.
We will use zFactor for gas compressibility calculations.
# use the new library zFactorzFactor )z.HallYarborough(pres.pr = 4.5 ,temp.pr = 1.4 )# > [1] 0.7373812pres.pr = 4.5 ,temp.pr = 1.4 )# > [1] 0.7396345pres.pr = 4.5 ,temp.pr = 1.4 )# > [1] 0.7343367pres.pr = 4.5 ,temp.pr = 1.4 )# > [1] 0.736032pres.pr = 4.5 ,temp.pr = 1.4 )# > [1] 0.7299354Start by looking at the examples in the vignettes. We will use in thisexampleVLP Brown - Example C13.
This is example C.13 in the Kermit Brown book.
We enter the well data with the functionsetWellInput:
input.example.C13 <- setWellInput(field.name = "HAGBR.MOD", well.name = "Brown_C13", depth.wh = 0, depth.bh = 2670, diam.in = 1.995, GLR = 500, liq.rt = 1000, wcut = 0.6, thp = 500, tht = 120, bht = 150, API = 22, gas.sg = 0.65, wat.sg = 1.07, if.tens = 30)The field name and well name are used for archival purposes.
Enter the parameters of the VLP model The parameters of the model consist of:
vlp.model: the correlation or mechanistical model
segments: the number of segments to split the well
tol: the tolerance of the delta-P iterations
well.model <- setVLPmodel(vlp.model = "hagbr.mod", segments = 11, tol = 0.000001)To run the model is necessary to provide:
well.input: all the well parameters as entered in the first step
well.model: the VLP model as entered in the second step
runVLP(well.input = input.example.C13, well.model))The results are given in the form of a dataframe where the rowsrepresent the number of segment plus one and the columns are thecalculations or variables.
