{
  "_id": "6acf24ead9de2f3f33fc8422",
  "Package": "aRpsDCA",
  "Version": "1.1.1",
  "Date": "2017-07-23",
  "Title": "Arps Decline Curve Analysis in R",
  "Authors@R": "c(person(\"Derrick\", \"Turk\", role = c(\"aut\", \"cre\", \"cph\"),\nemail = \"dwt@terminusdatascience.com\"))",
  "Description": "Functions for Arps decline-curve analysis on oil and gas\ndata. Includes exponential, hyperbolic, harmonic, and\nhyperbolic-to-exponential models as well as the preceding with\ninitial curtailment or a period of linear rate buildup.\nFunctions included for computing rate, cumulative production,\ninstantaneous decline, EUR, time to economic limit, and\nperforming least-squares best fits.",
  "License": "LGPL-2.1",
  "URL": "https://github.com/derrickturk/aRpsDCA",
  "BugReports": "https://github.com/derrickturk/aRpsDCA/issues",
  "Repository": "https://derrickturk.r-universe.dev",
  "Date/Publication": "2017-07-26 19:09:43 UTC",
  "RemoteUrl": "https://github.com/derrickturk/arpsdca",
  "RemoteRef": "HEAD",
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  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-10-14 06:40:18 UTC",
    "User": "root"
  },
  "Author": "Derrick Turk [aut, cre, cph]",
  "Maintainer": "Derrick Turk <dwt@terminusdatascience.com>",
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  "_type": "src",
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  "_created": "2026-10-14T06:40:18.000Z",
  "_published": "2026-10-14T06:44:58.253Z",
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  "_commit": {
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    "author": "derrickturk <dwt@terminusdatascience.com>",
    "committer": "derrickturk <dwt@terminusdatascience.com>",
    "message": "Fix Np/EUR for 0 buildup time.\n",
    "time": 1501096183
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    "name": "Derrick Turk",
    "email": "dwt@terminusdatascience.com",
    "login": "derrickturk",
    "description": "",
    "uuid": 6345632
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  "_dependencies": [
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      "package": "stats",
      "role": "Imports"
    },
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      "package": "methods",
      "role": "Imports"
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  "_owner": "derrickturk",
  "_selfowned": true,
  "_usedby": 0,
  "_updates": [],
  "_tags": [],
  "_topics": [
    "decline-curve-analysis",
    "petroleum",
    "petroleum-engineering"
  ],
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  "_contributors": [
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      "user": "derrickturk",
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  "_rbuild": "4.6.1",
  "_assets": [
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    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/manual.pdf",
    "extra/readme.html",
    "extra/readme.md"
  ],
  "_homeurl": "https://github.com/derrickturk/arpsdca",
  "_realowner": "derrickturk",
  "_cranurl": true,
  "_releases": [
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      "version": "1.0.0",
      "date": "2014-04-03"
    },
    {
      "version": "1.0.1",
      "date": "2015-06-22"
    },
    {
      "version": "1.0.2",
      "date": "2016-01-07"
    },
    {
      "version": "1.1.0",
      "date": "2016-04-05"
    },
    {
      "version": "1.1.1",
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  "_exports": [
    "arps.D",
    "arps.decline",
    "arps.eur",
    "arps.Np",
    "arps.q",
    "arps.t.el",
    "arps.with.buildup",
    "as.effective",
    "as.nominal",
    "best.curtailed.fit",
    "best.curtailed.fit.from.interval",
    "best.curtailed.fit.from.Np",
    "best.exponential",
    "best.exponential.curtailed",
    "best.exponential.curtailed.from.interval",
    "best.exponential.curtailed.from.Np",
    "best.exponential.from.interval",
    "best.exponential.from.interval.with.buildup",
    "best.exponential.from.Np",
    "best.exponential.from.Np.with.buildup",
    "best.exponential.with.buildup",
    "best.fit",
    "best.fit.from.interval",
    "best.fit.from.interval.with.buildup",
    "best.fit.from.Np",
    "best.fit.from.Np.with.buildup",
    "best.fit.with.buildup",
    "best.hyp2exp",
    "best.hyp2exp.curtailed",
    "best.hyp2exp.curtailed.from.interval",
    "best.hyp2exp.curtailed.from.Np",
    "best.hyp2exp.from.interval",
    "best.hyp2exp.from.interval.with.buildup",
    "best.hyp2exp.from.Np",
    "best.hyp2exp.from.Np.with.buildup",
    "best.hyp2exp.with.buildup",
    "best.hyperbolic",
    "best.hyperbolic.curtailed",
    "best.hyperbolic.curtailed.from.interval",
    "best.hyperbolic.curtailed.from.Np",
    "best.hyperbolic.from.interval",
    "best.hyperbolic.from.interval.with.buildup",
    "best.hyperbolic.from.Np",
    "best.hyperbolic.from.Np.with.buildup",
    "best.hyperbolic.with.buildup",
    "curtail",
    "curtailed.D",
    "curtailed.Np",
    "curtailed.q",
    "exponential.Np",
    "exponential.q",
    "harmonic.D",
    "harmonic.Np",
    "harmonic.q",
    "hyp2exp.D",
    "hyp2exp.Np",
    "hyp2exp.q",
    "hyp2exp.transition",
    "hyperbolic.D",
    "hyperbolic.Np",
    "hyperbolic.q",
    "rescale.by.time"
  ],
  "_help": [
    {
      "page": "aRpsDCA-package",
      "title": "Arps Decline Curve Analysis in R",
      "topics": [
        "aRpsDCA-package",
        "aRpsDCA"
      ]
    },
    {
      "page": "arps",
      "title": "Arps decline classes and S3 methods",
      "topics": [
        "arps",
        "arps.D",
        "arps.D.arps",
        "arps.D.exponential",
        "arps.D.hyp2exp",
        "arps.D.hyperbolic",
        "arps.decline",
        "arps.Np",
        "arps.Np.arps",
        "arps.Np.exponential",
        "arps.Np.hyp2exp",
        "arps.Np.hyperbolic",
        "arps.q",
        "arps.q.arps",
        "arps.q.exponential",
        "arps.q.hyp2exp",
        "arps.q.hyperbolic"
      ]
    },
    {
      "page": "eur",
      "title": "EUR and time-to-limit for Arps decline curves",
      "topics": [
        "arps.eur",
        "arps.t.el"
      ]
    },
    {
      "page": "arps.with.buildup",
      "title": "Arps declines with linear buildup period",
      "topics": [
        "arps.with.buildup"
      ]
    },
    {
      "page": "as.effective",
      "title": "Arps decline conversion from nominal to effective",
      "topics": [
        "as.effective"
      ]
    },
    {
      "page": "as.nominal",
      "title": "Arps decline conversion from effective to nominal",
      "topics": [
        "as.nominal"
      ]
    },
    {
      "page": "bestfit",
      "title": "Best-fitting of Arps decline curves",
      "topics": [
        "best.curtailed.fit",
        "best.curtailed.fit.from.interval",
        "best.curtailed.fit.from.Np",
        "best.exponential",
        "best.exponential.curtailed",
        "best.exponential.curtailed.from.interval",
        "best.exponential.curtailed.from.Np",
        "best.exponential.from.interval",
        "best.exponential.from.interval.with.buildup",
        "best.exponential.from.Np",
        "best.exponential.from.Np.with.buildup",
        "best.exponential.with.buildup",
        "best.fit",
        "best.fit.from.interval",
        "best.fit.from.interval.with.buildup",
        "best.fit.from.Np",
        "best.fit.from.Np.with.buildup",
        "best.fit.with.buildup",
        "best.hyp2exp",
        "best.hyp2exp.curtailed",
        "best.hyp2exp.curtailed.from.interval",
        "best.hyp2exp.curtailed.from.Np",
        "best.hyp2exp.from.interval",
        "best.hyp2exp.from.interval.with.buildup",
        "best.hyp2exp.from.Np",
        "best.hyp2exp.from.Np.with.buildup",
        "best.hyp2exp.with.buildup",
        "best.hyperbolic",
        "best.hyperbolic.curtailed",
        "best.hyperbolic.curtailed.from.interval",
        "best.hyperbolic.curtailed.from.Np",
        "best.hyperbolic.from.interval",
        "best.hyperbolic.from.interval.with.buildup",
        "best.hyperbolic.from.Np",
        "best.hyperbolic.from.Np.with.buildup",
        "best.hyperbolic.with.buildup",
        "bestfit"
      ]
    },
    {
      "page": "curtailed",
      "title": "Arps decline curves with initial curtailment",
      "topics": [
        "arps.D.curtailed",
        "arps.Np.curtailed",
        "arps.q.curtailed",
        "curtail",
        "curtailed",
        "curtailed.D",
        "curtailed.Np",
        "curtailed.q"
      ]
    },
    {
      "page": "exponential",
      "title": "Arps exponential declines",
      "topics": [
        "exponential",
        "exponential.Np",
        "exponential.q"
      ]
    },
    {
      "page": "format.arps",
      "title": "Format methods for Arps decline objects",
      "topics": [
        "format.arps"
      ]
    },
    {
      "page": "harmonic",
      "title": "Arps harmonic declines",
      "topics": [
        "harmonic",
        "harmonic.D",
        "harmonic.Np",
        "harmonic.q"
      ]
    },
    {
      "page": "hyp2exp",
      "title": "Arps hyperbolic-to-exponential declines",
      "topics": [
        "hyp2exp",
        "hyp2exp.D",
        "hyp2exp.Np",
        "hyp2exp.q",
        "hyp2exp.transition"
      ]
    },
    {
      "page": "hyperbolic",
      "title": "Arps hyperbolic declines",
      "topics": [
        "hyperbolic",
        "hyperbolic.D",
        "hyperbolic.Np",
        "hyperbolic.q"
      ]
    },
    {
      "page": "print.arps",
      "title": "Print methods for Arps decline objects",
      "topics": [
        "print.arps"
      ]
    },
    {
      "page": "rescale.by.time",
      "title": "Time unit conversion for DCA",
      "topics": [
        "rescale.by.time"
      ]
    }
  ],
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