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Production forecasting decline curve analysis: Difference between revisions

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The paper by Roland Horne had a typo in the SPE paper number.
m (The paper by Roland Horne had a typo in the SPE paper number.)
 
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*Arps 1945 and 1956.
*Arps 1945 and 1956.
*Brons 1963 and Fetkovitch 1983 applied constant pressure solution to diffucisivty equation and demonstrated that exponential decline curve actually reflects single phase, incompressible fluid production from a closed reservoir. DCA is more than a empirical curve fit.
*Brons 1963 and Fetkovitch 1983 applied constant pressure solution to diffusivity equation and demonstrated that exponential decline curve actually reflects single phase, incompressible fluid production from a closed reservoir. DCA is more than a empirical curve fit.
*Fetkovitch 1980 and 1983 developed set of type curves to enhance application of DCA.
*Fetkovitch 1980 and 1983 developed set of type curves to enhance application of DCA.
*Doublet and Blasingame 1995 developed theoretical basis for combining transient and boundary dominated flow for the pressure transient solution to the diffusivity equation.
*Doublet and Blasingame 1995 developed theoretical basis for combining transient and boundary dominated flow for the pressure transient solution to the diffusivity equation.
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#The start point(rate) of forecast .
#The start point(rate) of forecast .
#The constraints under which the forecast needs to be made.
#The constraints under which the forecast needs to be made.


However one more factor, also extremely important at this stage is to determine type of decline. Since the signature of shape may not be apparent on a log q vs. time (most used plot), literature provides many ways was to look at the same data, combine this information with other knowledge about the fields before we make our conclusions. .
However one more factor, also extremely important at this stage is to determine type of decline. Since the signature of shape may not be apparent on a log q vs. time (most used plot), literature provides many ways was to look at the same data, combine this information with other knowledge about the fields before we make our conclusions. .
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*The volume of water injected should be greater than 25% of the hydrocarbon pore volume.
*The volume of water injected should be greater than 25% of the hydrocarbon pore volume.


RF vs. HCPVI, Log (WOR) vs. Np, Log (Qo+Qw) vs. Np and Masoner plots should be also used in waterflood cases in addition to conventional methods mentioned earlier to ensure estimation of incremental recoveries due to Waterflood and/or impact on recovery due to constraints in the system. As a special case, Roland Horne..et al (SPE 84370) have proposed techniques to apply DCA on naturally fractured reservoirs that have been developed using waterflooding.
RF vs. HCPVI, Log (WOR) vs. Np, Log (Qo+Qw) vs. Np and Masoner plots should be also used in waterflood cases in addition to conventional methods mentioned earlier to ensure estimation of incremental recoveries due to Waterflood and/or impact on recovery due to constraints in the system. As a special case, Roland Horne..et al (SPE 83470) have proposed techniques to apply DCA on naturally fractured reservoirs that have been developed using waterflooding.


=== Ratio plots ===
=== Ratio plots ===
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[http://petrowiki.org/Types_of_decline_analysis_in_production_forecasting Types of decline analysis in production forecasting]
[http://petrowiki.org/Types_of_decline_analysis_in_production_forecasting Types of decline analysis in production forecasting]


[http://petrowiki.org/Uncertainty_analysis_in_creating_production_forecasting Uncertainty analysis in creating production forecasting]
[http://petrowiki.org/Uncertainty_analysis_in_creating_production_forecast Uncertainty analysis in creating production forecast]


[http://petrowiki.org/Uncertainty_range_in_production_forecasting Uncertainty range in production forecasting]
[http://petrowiki.org/Uncertainty_range_in_production_forecasting Uncertainty range in production forecasting]


[http://petrowiki.org/Using_multiple_methodologies_in_production_forecasting Using multiple methodologies in production forecasting]
[http://petrowiki.org/Using_multiple_methodologies_in_production_forecasting Using multiple methodologies in production forecasting]


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