... pressure in the near-miscible region, but no dramatic change in oil recovery was observed with a change in operating pressure. Introduction The Steelman pool, located about 200 km southeast Regina, Saskatchewan, was discovered in 1954. Covering approximately 370 km 2 , the field was estimated to contain...

... of steam led to uneven heating of the porous medium. The distribution of heat along the well axis was quite uneven. Pressure drop inside the well was small, but it influenced fluid flow distribution in the surrounding porous medium. Oil recovery and pressure drop were plotted as functions of volume...

... Abstract Weyburn reservoir, Located in southeast Saskatchewan and operated by PanCanadian PetroLeum Ltd., has reached its economic Limit of production by waterflooding. The reservoir is a target for tertiary CO 2 miscible flooding to enhance oil recovery and extend its production Life...

... in fractured reservoirs has been studied for over forty years. Aronofsky et. al. I used an exponential type of formula to correlate oil recovery data from fractured reservoirs. The equation used is as follows: Equation (1) (Available in full paper) In the figures of the Aronofsky et al. 1 paper, one can see...

... Abstract Mass transfer between fractures and matrix blocks is crucial to oil recovery by waterflooding in fractured reservoirs Mattax and Kyre (1962) proposed a scaling equation for rate of oil recovery by spontaneous imbibitions. Results were presented as oil recover vs dimensionless time...

... recoveries was obtainedfor lower flow rates and for the cases where water and oil had the sameviscosities. The interface became unstable for higher flow rates and/orviscosity ratios. Fingering flow, which results ill bypassing of oil, reducesultimate oil recovery. For a given viscosity ratio, the higher flow...

... Abstract Horizontal wells in an Improved Oil Recovery (IOR) project can potentially improve sweep efficiency, and the overall economics. In cases of marginal economics, the use of horizontal wells can make IOR more viable. Due to these advantages, many operators are beginning to apply...

... for the prediction of fiireflood behaviour. Introduction As a thermal method of improved oil recovery, in-situ combustion has the advantage of delivering heat to a formation very efficiently. Consequently, the prospect of using in-situ combustion to produce heavy oils has continually attracted interest...

... permeability plays an important role in the numerical simulation of oil recovery processes. Thermal methods for heavy oil recovery, such as steam drive and in-situ combustion involve the simultaneous flow of three immiscible fluids through the porous rock formation at elevated temperatures. Over the past 25...

... improve the ultimate oil recovery of the reservoir considerably. After 15 years of gas injection, field data combined with predicted data under natural depletion (solution gas drive, gas cap drive and gravity drainage combined) have shown that pressure maintenance would ultimately increase the recovery...

... enabled the operators to locate major permeability barriers; thisallowed optimum placement of water injectors in the field and relatively highultimate oil recovery. The waterflood performance of the Zeigler Field was evaluated with anintegrated 3-D geologic and reservoir simulation model. Direct linkage...

... Abstract In a CO 2 miscible displacement process, asphaltenes from the oil can flocculate in the presence of CO 2 and can cause numerous production problems with a detrimental effect on oil recovery. A five-year multiclient research project was initiated in 1988 to evaluate the suitability...

... Abstract The downward displacement of oil by inert gas injection in a reservoir depleted by waterflooding, results in very high oil recovery efficiencies. The success of this technique stems from the continuity of the oil phase provided by the bulk films of oil in all pore space invaded...

... be tolerated for the miscible process. The minimum miscibility pressures (MMP) determined for the above four systems demonstrated that the miscible displacement process using pure CO 2 or impure CO 2 containing up to 9.9 mol % CH 4 (contaminant) as a solvent is a promising enhanced oil recovery (EOR...

... transversely with vertical channels to improve liquid drainage, and in the second procedure, naphtha was used as a steam additive to accelerate oil drainage and to increase ultimate oil recovery. The physical models used in this study were designed according to scaling techniques which insured that gravity...

... of scaled model steam injection experiments investigating the role of a perforated casing on the recovery performance. Fluid production rate, well pressure drop, cumulative oil recovery and cumulative oil-steam ratio for open and cased horizontal wells are determined and compared to determine the impact...

... was not observed, a uniform displacement front was formed. In the cases where parting was observed the experiment was temporarily shut in. Substantial amounts of oil were produced following the shut in period. Temporary shut in was also implemented at gas breakthrough with considerable increase in the oil recovery...

... Abstract All of the enhanced oil recovery (EOR) methods are outlined in a systematic and balanced manner, and the current impact of these methods is assessed in the light of the field experience. As such, this paper is a timely and comprehensive description of EOR methods, and where they stand...

... flooding study using carbon dioxide as a flooding agent was designed with the following objectives: Quantify carbon dioxide oil displacement efficiency, Compare carbon dioxide with waterflood oil recovery, and Compare the potentially complex carbon dioxide miscible oil displacement behavior...

... rock. This "slim tube" was mounted within an oven maintained at reservoir temperature. The desired test result was the minimum pressure required to achieve solvent/oil miscibility, characterized by high oil recovery from the slim tube. As interest in enhanced oil recovery by hydrocarbon sol vent flood...