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Production forecasting decline curve analysis: Difference between revisions
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Production forecasting decline curve analysis (view source)
Revision as of 09:08, 26 November 2018
, 26 November 2018The paper by Roland Horne had a typo in the SPE paper number.
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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 | *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 | 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/Production_forecasting_glossary Production forecasting glossary] | [http://petrowiki.org/Production_forecasting_glossary Production forecasting glossary] | ||
[http://petrowiki.org/ | [http://petrowiki.org/Aggregation_of_forecasts Aggregation of forecasts] | ||
[http://petrowiki.org/Challenging_the_current_barriers_to_forecast_improvement Challenging the current barriers to forecast improvement] | |||
[http://petrowiki.org/Commercial_and_economic_assumptions_in_production_forecasting Commercial and economic assumptions in production forecasting] | |||
[http://petrowiki.org/Controllable_verses_non_controllable_forecast_factors Controllable verses non controllable forecast factors] | |||
[http://petrowiki.org/Discounting_and_risking_in_production_forecasting Discounting and risking in production forecasting] | |||
[http://petrowiki.org/Documentation_and_reporting_in_production_forecasting Documentation and reporting in production forecasting] | |||
[http://petrowiki.org/Empirical_methods_in_production_forecasting Empirical methods in production forecasting] | |||
[http://petrowiki.org/Establishing_input_for_production_forecasting Establishing input for production forecasting] | |||
[http://petrowiki.org/Integrated_asset_modelling_in_production_forecasting Integrated asset modelling in production forecasting] | |||
[http://petrowiki.org/Long_term_verses_short_term_production_forecast Long term verses short term production forecast] | |||
[http://petrowiki.org/Look_backs_and_forecast_verification Look backs and forecast verification] | |||
[http://petrowiki.org/Material_balance_models_in_production_forecasting Material balance models in production forecasting] | |||
[http://petrowiki.org/Probabilistic_verses_deterministic_in_production_forecasting Probabilistic verses deterministic in production forecasting] | |||
[http://petrowiki.org/Production_forecasting_activity_scheduling Production forecasting activity scheduling] | |||
[http://petrowiki.org/Production_forecasting_analog_methods Production forecasting analog methods] | |||
[http://petrowiki.org/Production_forecasting_building_blocks Production forecasting building blocks] | |||
[http://petrowiki.org/Production_forecasting_decline_curve_analysis Production forecasting decline curve analysis] | |||
[http://petrowiki.org/Production_forecasting_expectations Production forecasting expectations] | |||
[http://petrowiki.org/Production_forecasting_flowchart Production forecasting flowchart] | |||
[http://petrowiki.org/Production_forecasting_frequently_asked_questions_and_examples Production forecasting frequently asked questions and examples] | |||
[http://petrowiki.org/Production_forecasting_in_the_financial_markets Production forecasting in the financial markets] | |||
[http://petrowiki.org/Production_forecasting_principles_and_definition Production forecasting principles and definition] | |||
[http://petrowiki.org/Production_forecasting_purpose Production forecasting purpose] | |||
[http://petrowiki.org/Production_forecasting_system_constraints Production forecasting system constraints] | |||
[http://petrowiki.org/Quality_assurance_in_forecast Quality assurance in forecast] | |||
[http://petrowiki.org/Reservoir_simulation_models_in_production_forecasting Reservoir simulation models in production forecasting] | |||
[http://petrowiki.org/Types_of_decline_analysis_in_production_forecasting Types of decline analysis in production forecasting] | |||
[http://petrowiki.org/ | [http://petrowiki.org/Uncertainty_analysis_in_creating_production_forecast Uncertainty analysis in creating production forecast] | ||
[http://petrowiki.org/ | [http://petrowiki.org/Uncertainty_range_in_production_forecasting Uncertainty range in production forecasting] | ||
[http://petrowiki.org/ | [http://petrowiki.org/Using_multiple_methodologies_in_production_forecasting Using multiple methodologies in production forecasting] | ||
[[#Top|Back to top]] | [[#Top|Back to top]] | ||
== Category == | == Category == | ||
[[Category:5.6 Formation evaluation and management]] [[Category:5.6.9 Production forecasting]] [[Category: | [[Category:5.6 Formation evaluation and management]] [[Category:5.6.9 Production forecasting]] [[Category:GIWS-PF]] [[Category:Chapter 7]] [[Category:DW]] [[Category:DW Complete]] [[Category:DW All Pages]] | ||