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
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 version of aRpsDCA is 1.0.1 and is available from CRAN.
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
(c) 2016 dwt | terminus data science, LLC