... recovery production monitoring reservoir characterization reservoir surveillance production control artificial intelligence waterflooding asset and portfolio management reserves evaluation cyclic production producer nubia oil rate injector allocation decline rate perforation reservoir...

... performance and stress redistribution. Less stressed formation corresponds to lower closure stress on fracture walls, which triggers limited fracture closure and stabilizes well production. Moreover, a moderate bottomhole pressure decline rate avoids significant fracture closure while preserves relatively...

...  t = time  e = base of natural logarithms, (2.718…) This model assumes a constant decline rate over the entire life of the well (not a usual occurrence). A more realistic mode that accounts for changes in decline rate over time is the hyperbolic decline model. Hyperbolic Decline...

...") to incorporate a b -factor larger than 1.0 and a minimum exponential decline rate ( D min ) at the late-time life in shale production predictions. This paper further discusses this transient b -factor effect and the benefits of the Extended Exponential Decline Curve Analysis (EEDCA), ( Zhang et. al , 2015...

... in rapid history matches, building reasonable models for pressure transient analysis, identifying potential thief zones, and potentially analyzing flow back distribution of fractured unconventional wells. The method relates hyperbolic decline rate to a flow geometry, specifically flow paths with both...

... uncertainties by honoring observed performance trends. However, applying the traditional DCA method to shale wells, engineers commonly encounter the difficulties of simultaneously matching the high initial production rate, the extremely sharp decline rate in the transient flow period, and the shallow decline...

... using the proposed methodology. For this portfolio computed decline rates, PDP reserves and cash flows are provided. Analysis of expected production from new wells and estimates of workover performance are also presented. The analytical approach presented in this work is being used daily...

... complex reservoir assessment shale well flow regime cumulative recovery recovery production history shale gas group 1 production data decline rate terminal decline rate west virginia bilinear flow exponent spe 166205 duong approach duong method available production history...

... control drillstem testing density ratio decline rate gas well fetkovich natural gas reservoir decline curve analysis reservoir surveillance drillstem/well testing calculation bottomhole pressure specification type-curve match decline exponent straight-line analysis transformation equation...

... Reservoir Characterization waterflooding Upstream Oil & Gas enhanced recovery oil production Efficiency well group production data injector optimization water management breakthrough reservoir pressure decline rate connectivity well location water breakthrough producer...

... gas rate porosity system coal bed methane spe 84427 recovery upstream oil & gas drillstem testing production control database coalbed methane decline rate permeability decline curve analysis gas content peak gas rate reservoir property drainage area porosity energy navigator...

... are deferred. The post-stimulation decline rate is the rate at which the DI deteriorates after treatment of the well. This value is calculated by performing a linear regression analysis on post-stimulation DI values and represents the simple annual decline rate in the wells deliverability potential...

... of the decline rate. The theoretical exponents are shown to be in good agreement with experimental data. The subsequent evolution of the gas phase and the approach to the critical gas saturation is also described. experimental data nucleation fraction constant pressure decline rate flow in porous media...

... natural gas cng decline rate united states mcf reserves evaluation productive capacity gas monetization upstream oil & gas natural gas lng tcf npc study potential gas reserve investment equilibrium price forecast natural gas price spe 71512 gas reserve activation index pipeline...

... at abandonment from the initial daily oil rate, q oi , daily oil rate at abandonment, qa, and annual initial decline rate, d by Abstract Decline analysis for secondary or tertiary oil recovery processes typically assumes that the total reservoir fluid rate (referred to here as the processing rate) remains...

... concepts of linear regression and prediction limits have been incorporated in a method which utilizes the analyst's decline exponent (b), decline rate (Di), and production rate (qi) estimates. The method is flexible in that any portion of the historic production data may be utilized if the analyst believes...

... decline curve mixed culture microbial oil production annual rate enhanced recovery society of petroleum engineers waterflood bacteria meor microbial method spe 24820 trend line hdb population well reservoir meor bacteria decline rate upstream oil & gas operator injection ( Society...

... experiment fluid dynamics numerical study pressure decline rate decline rate supersaturation reservoir simulation bubble growth spe 22589 visualization pressure depletion drillstem/well testing flow in porous media upstream oil & gas critical gas saturation concentration...

... curve analysis. Production of the average Austin Chalk well is usually characterized by an early rapid decline and a later slow decline. The average initial effective decline rate is about 90% per year, and lasts about six months to one year. For the later, less dramatic decline, the average is about 35...

... payback pilot test reservoir surveillance production monitoring test well steam quality decline rate production rate production control thin film SPE Society of Petrolet.rn Engineers of AIME SPE 12007 Field Results of Adding Surfactant to Cyclic Steam Wells by J.D. Adkins, Conoco Inc. Member...