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الإنتاج والرفع

تحليل منحنى الانحدار

Paste a rate history and get an Arps fit — qi, Di and b — with the time to the economic limit, remaining reserves and an EUR.

كل الأدوات

المدخلات

سجل المعدل

Months from the start of the decline, and the rate. Paste two columns from a spreadsheet.

صفMonthRate
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

Same units as the rate column.

Added to remaining reserves to give EUR. Leave at zero to see reserves only.

النتائج

يجري تحميل الحساب…

جرى هذا الحساب داخل متصفحك. لم يُرسل أي رقم أدخلته إلى أي جهة، ولم يُحفظ شيء.

كيف تُحسب

  • Exponential fits ln q against t; harmonic fits 1/q against t; both are one regression.
  • Hyperbolic scans b from 0.05 to 1.5 and linearises q^(−b) against t at each candidate, keeping the b with the lowest residual sum of squares.
  • On "best fit" the three models compete on residual, so the answer is whichever describes the data rather than whichever was assumed.
  • Reserves integrate the chosen Arps form analytically down to the economic rate; EUR adds the cumulative you enter.

المعايير التي تتحدثها

أين تتوقف عن الصحة

Arps is an empirical curve, not physics. It assumes boundary-dominated flow at constant bottom-hole pressure with no operating change — so a fit over a period containing a workover, a compressor start-up or a choke change describes the intervention, not the reservoir. In unconventional wells the early transient period fits with b well above 1, which is mathematically unbounded and gives reserves that cannot exist; those wells need a terminal exponential decline imposed, and this tool does not impose one for you.

القدرة التي تؤتمت هذا العمل

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