README.md

In derrickturk/aRpsDCA: Arps Decline Curve Analysis in R

aRpsDCA

an R package for Arps decline-curve analysis

aRpsDCA provides R implementations of functions for carrying out Arps decline-curve analysis on oil and gas production data.

aRpsDCA currently implements the following decline-curve types: Exponential Hyperbolic (and harmonic) Hyperbolic with terminal exponential (aka "modified hyperbolic", "hyperbolic-to-exponential") Any of the above with initial rate curtailment * Any of the above with initial linear buildup periods

aRpsDCA provides functions for computing rate, cumulative production, and instantaneous decline over time computing EUR and time to economic limit performing best fits of various decline curve types to actual production data rate, decline, and time unit conversions

aRpsDCA is released under the LGPL v2.1 and is free for commercial and non-commercial use.

The current "released" version of aRpsDCA is 1.1.1 and is available from CRAN.

The current pre-release version of aRpsDCA can also be installed from github using the devtools library:

install.packages('devtools')
devtools::install_github('derrickturk/aRpsDCA')

Release notes: v1.0.0 (2014-04-03): initial release v1.0.1 (2015-06-21): S3 methods for formatting now correctly print curve family; handling of Np for D = 0 is corrected v1.0.2 (2016-01-06): evaluation of hyperbolic-to-exponential declines with Di = Df now handled correctly v1.1.0 (2016-04-04): Arps declines with linear initial buildup periods, and fitting to interval-volume data; additional bug fixes for daily data and better initial guesses for decline parameters v1.1.1 (2017-07-23): EUR for declines with buildup now handled correctly; zero results from arps.q and arps.Np when decline with buildup was passed with only post-buildup time values are now corrected

(c) 2017 dwt | terminus data science, LLC

derrickturk/aRpsDCA documentation built on May 15, 2019, 5:04 a.m.