FRACTIONAL FLOW

Posts Tagged ‘The Oil Drum

IN BAKKEN (ND) IT IS NOW MOSTLY ABOUT MCKENZIE COUNTY

In this post I present an update to my previous posts over at The Oil Drum (The Red Queen series) on developments in tight oil production from the Bakken formation in North Dakota with some additional estimates, mainly presented in charts. The expansion is much about the differences between wells capable of producing, actual producing wells and idle wells (here defined as the difference between the number of wells capable of producing and the number of actual producing wells).

Figure 01: The chart above shows monthly net additions of producing wells (green columns plotted against the rh scale) and development in oil production from Bakken (ND) (thick dark blue line, lh scale) as of January 2000 and as of October 2013. The 12 Month Moving Average (12 MMA) is also plotted (thick dotted dark red line, lh scale).

Figure 01: The chart above shows monthly net additions of producing wells (green columns plotted against the rh scale) and development in oil production from Bakken (ND) (thick dark blue line, lh scale) as of January 2000 and as of October 2013. The 12 Month Moving Average (12 MMA) is also plotted (thick dotted dark red line, lh scale).

There is still noticeable growth in tight oil production from an accelerated additions of producing wells.

  • For October 2013 North Dakota Industrial Commission (NDIC) reported a production of 877 kb/d from Bakken/Three Forks.
  • In October 2013YTD production from Bakken/Three Forks (ND) was 775 kb/d.
    (It is now expected that average daily production for all 2013 from Bakken (ND) will become around 800 kb/d.
  • The cash flow analysis now suggests less use of debt for manufacturing wells for 2013.
    Major funding for new wells now appears to come mainly from from net cash flows.

kb; kilo barrels = 1,000 barrels

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TIGHT OIL AND OIL SAND VERSUS SMALL DEEP WATER DEVELOPMENTS, SOME OBSERVATIONS

This post which is based on results from earlier research and analytic work posted on The Oil Drum, Fractional Flow and not least in recent (private) discussions with other international acknowledged experts present some facts and observations about developments of tight oil (which to some extent also applies to oil sands) versus small deep water discoveries*.

*Small deep water discoveries are here meant discoveries with Estimated Ultimate Recovery (EUR) below 100 Million Barrels of Oil Equivalents (MBOE).

Figure 1: Chart above shows relative developments in annualized yield curves (lh scale) of oil for so-called elephants (Norwegian deep water discoveries estimated to hold ultimate recoverable reserves (EUR) above 1,000 million barrels with crude oil [red lines]). Small discoveries (Norwegian deep water discoveries estimated to hold ultimate recoverable reserves (EUR) below 100 million barrels with crude oil, [green lines]). The reference tight oil well for Bakken [violet lines]. The cumulative versus time is plotted against the rh scale.  Note also the short high flow life cycles of small deep water developments and tight oil.

Figure 1: Chart above shows relative developments in annualized yield curves (lh scale) of oil for so-called elephants (Norwegian deep water discoveries estimated to hold ultimate recoverable reserves (EUR) above 1,000 million barrels with crude oil [red lines]).
Small discoveries (Norwegian deep water discoveries estimated to hold ultimate recoverable reserves (EUR) below 100 million barrels with crude oil, [green lines]).
The reference tight oil well for Bakken [violet lines].
The cumulative versus time is plotted against the rh scale.
Note also the short high flow life cycles of small deep water developments and tight oil.

One big takeaway from the chart above is that both developed small deep water discoveries and tight oil wells have steep decline rates and short high flow life cycles. These are now the major sources that offset declines from the bigger, heavily depleted legacy fields (with long productive life cycles) and provide any growth in global oil supplies.

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