...; there are many SAGD wellpairs that have performed with low production rates and thermal efficiency1. This is usually a result of reservoir geology and operating strategy. It is required that SAGD or SAGD-variants are robust, that is, they are geotolerant, so that they can be tuned to operate with reasonable...

... by engineers worldwide. Theoretical calculations and field practice have shown that DWS can improve oil production rate, reduce water cut, and increase oil productivity index of a well. However, the technique requires draining and lifting of large amounts of water from the aquifer, which increases the cost...

...1 PAPER 2009-126 Improving Water Flood Performance by Varying Injection-Production Rates Ashok K. Singhal Alberta Research Council This paper is accepted for the Proceedings of the Canadian International Petroleum Conference (CIPC) 2009, Calgary, Alberta, Canada, 16 18 June 2009. This paper...

... initial reservoir temperature of 80ºC Results and Discussion Figure 5, 6, and 7 compare oil production rates, steam injection rates, and steam production rates of Cases 1, 2, and 3, respectively. It can be seen that Full SAGD (Case 1) can achieve an oil production rate of approximately 250 m3/d...

... carrier gas oil sample vapex process vapor chamber heavy oil enhanced recovery injection bitumen propane sagd solvent concentration steam-assisted gravity drainage oil production rate oil sand injection case fluctuation complex reservoir asphaltene content experiment...

... injection temperature reservoir injection rate es-sagd process upstream oil & gas sagd experiment sagd quantity test 1 thermal method production rate propane test 3 kpag diluent test 5 experiment high concentration concentration consumption sagd test steam-assisted...

... enhanced recovery primary production efficiency early time recovery profile breakthrough recovery oil recovery water injection rate water injection production rate secondary waterflood sandpack water breakthrough capillary force waterflooding upstream oil & gas saturation...

... the edges of the chamber to the production well. wellpair liquid production rate steam-assisted gravity drainage interwell subcool thermal method injection well liquid pool steam chamber permeability cumulative bitumen constraint production well steam trap control upstream oil & gas...

... drawdown in unconsolidated sand be controlled by the following key physical parameters: (1) rock strength; (2) fluid viscosity; (3) pressure drawdown build-up strategy and pressure disturbance. The simulation results relating cumulative sand production and sand production rate to these important variables...

...) 500, 1000, 10000 Production rate (Mscf/day) 42.5 Ts (F) 718 Pse (psi) 561 Po (psi) 1160.3 Pi (psi) The effect of porosity, permeability and rate of production is studied by this model. Effect of porosity: The model was run for the case of case of permeability equal to 1 md and rate of production equal...

... at the piloting stage. Both processes have their advantages and disadvantages. The advantage of the SAGD process is its high oil production rate. However the high production rate of the SAGD process is associated with intensive energy consumption and CO2 emissions from burning natural gas to generate steam...

... analysis, based on the amplification of the initial perturbations. It is found that in most experimental cases, depending on the Rayleigh number of the porous medium, convective mixing occurs, which results in higher dissolution of CO2 in oil and thus a higher oil production rate than what is expected from...

... water saturation bitumen non-dry run saturation flow in porous media vapour chamber separator heavy oil interface upstream oil & gas experiment production rate 1 PAPER 2007-005 The Role of Connate Water Saturation in VAPEX Process S.R.ETMINAN1,2, B.B.MAINI 2, R.KHARRAT1 1 Petroleum...

... completion bottom-water system production rate reservoir simulation wojtanowicz dimensionless group penetration permeability completion water cut modeling & simulation water invasion oil recovery well completion grid block enhanced recovery well penetration upstream oil & gas top...

... that is a northwest-southeast trending anticline approximately 25 kilometers long and about five kilometers wide. The structure is investigated by surface and seismic surveys and eight wells drilled on the field. condensate reservoir production rate reservoir gas storage scenario field pressure reservoir...

.... The model captures the difference between heavy and light oil in terms of mobility ratio effect, recovery dynamics prior to and after water breakthrough, and water cut control with production rate. The results show that preventing water breakthrough to wells in heavy oil is several-fold more important...

... in a pattern with the use of longer wells, the cost of all the riser sections is decreased significantly. simulation well model long well model sectioned model enhanced recovery bitumen production liner bitumen production rate short well model production rate producer directional drilling...

... production of heavy oil is possible but production rates are low, sand is often produced with the oil (not necessarily a disadvantage), water cuts are generally high and recovery factors marginal. Cold production is still a logical choice for fields with lower viscosity oil. Otherwise, in-situ heavy oil...

... the promising feature of warm VAPEX process in terms of enhanced oil production rates. Introduction The vapor extraction (VAPEX) process has recently drawn lots of attention for the recovery of heavy oil. The increasing trend in the energy costs along with great concerns regarding the environmental aspects...

... as a function of the surfactant concentration by using the modified Turner's droplet model. Then, a mathematical model is formulated to optimize the foam dewatering performance by maximizing the gas production rate per unit rate of the foaming agents. A field case is presented to illustrate the optimization...