The Experts below are selected from a list of 252 Experts worldwide ranked by ideXlab platform

Abbas Firoozabadi - One of the best experts on this subject based on the ideXlab platform.

  • Gas/oil ratio, temperature, and initial water-saturation effects on solution-gas drive
    2020
    Co-Authors: Ghanshyabhai Tank, Abbas Firoozabadi
    Abstract:

    The effects of initial water saturation, S wi , temperature, and gas/oil ratio (GOR) on solution-gas drive in heavy oils were studied. The viscosity and gravity of the Stock-Tank oil used in the tests were 560,000 cp and 8.7°API. In two tests, 4.0 and 5.2% S wi were used. Five tests were conducted at 35°C, and one test was conducted at 46°C.

  • Macro- and Microscale Waterflooding Performances of Crudes which form w/o Emulsions upon Mixing with Brines
    Energy & Fuels, 2014
    Co-Authors: Nima Rezaei, Abbas Firoozabadi
    Abstract:

    We study the micro- and macroscale waterflooding performances of unusual crudes which naturally form tight emulsions (stable after 15 months) upon mixing with water and different brines—including the reservoir brine. These crudes are obtained from a large oil field with Stock Tank oil viscosities in the range 20–100 cP. The waterflooding tests are conducted at constant injection rates in Berea cores and also in a glass-etched micromodel with and without initial water saturation. With the initial water saturation, the emulsions cause final oil recovery to be significantly lower while the breakthrough is surprisingly suppressed. Pressure data suggests that emulsions are formed in situ in the waterflooding tests both with and without the initial water saturation. The injection pressure data show significant fluctuations after about 3 pore volumes of injection. Both the pressure drop and pressure fluctuations are found to be higher at lower injection rates. Furthermore, the pressure drop is higher in tests wi...

  • gas oil ratio temperature and initial water saturation effects on solution gas drive
    2001 SPE Annual Technical Conference and Exhibition, 2002
    Co-Authors: Ghanshyabhai Tank, Abbas Firoozabadi
    Abstract:

    The effects of initial water saturation, S wi , temperature, and gas/oil ratio (GOR) on solution-gas drive in heavy oils were studied. The viscosity and gravity of the Stock-Tank oil used in the tests were 560,000 cp and 8.7°API. In two tests, 4.0 and 5.2% S wi were used. Five tests were conducted at 35°C, and one test was conducted at 46°C.

  • Pressure and composition effect on wax precipitation : Experimental data and model results
    1996
    Co-Authors: Abbas Firoozabadi, Per Fotland
    Abstract:

    Wax precipitation is often studied using the Stock Tank oil. However, precipitation may be very different in well tubing and production facilities due to the effects of pressure and composition. As an example, the cloudpoint temperature may decrease as much as 15 K from atmospheric pressure to the saturation pressure of 100 bar mostly due to the dissolution of light gases into the oil (i.e. due to composition changes). It is also often assumed that the addition of solvents such as C 5 and C 6 decreases the cloudpoint temperature. On the contrary, from our modeling results, we have found that the mixing of a crude with a solvent increases the cloudpoint temperature (i.e., enhances the wax precipitation). In this study, the cloundpoint temperature at live oil conditions and the amount of the precipitated wax at Stock Tank oil conditions are provided for three crudes. A modified multisolid wax precipitation model is used to study the effects of pressure and composition on wax precipitation. The modeling results reveal that an increase in methane and CO 2 concentration decreases the cloudpoint temperature while an increase in C 5 concentration increases the cloud point temperature.

M.j. Pitts - One of the best experts on this subject based on the ideXlab platform.

  • Detailed evaluation of the West Kiehl alkaline-surfactant-polymer field project and it`s application to mature Minnelusa waterfloods. Annual technical report, January 1993--December 1993
    1995
    Co-Authors: M.j. Pitts
    Abstract:

    The combination of an interfacial tension agent and a mobility control agent has the potential to produce additional oil beyond a waterflood. The West Kiehl alkaline-surfactant-polymer project is the most advanced application of this chemical enhanced oil recovery technique. The West Kiehl alkaline-surfactant-polymer flood was initiated in September 1987 as a secondary application after primary recovery. A preliminary analysis of the West Kiehl alkaline-surfactant-polymer flood indicates that incremental oil of 20% of the original Stock Tank oil in place will be produced above waterflooding. The cost of the incremental oil will be less than $2.50 per incremental barrel. A statistical analysis of approximately 120 Minnelusa oil fields in the Powder River Basin indicates that the original Stock Tank oil in place exceeds one billion barrels. If the enhanced oil recovery technology implemented at West Kiehl field could be successfully applied to these fields, the potential incremental oil recovery would approach 200 million barrels. This project (1) evaluates the geological deposition environment of West Kiehl and adjacent Minneluse sand reservoirs; (2) compares the production performance results of the best geologic and reservoir performance analogs and select two fields for future study; (3) compares the two best field analogs to the westmore » Kiehl field using numerical simulation; (4) predict results of applying the enhancement technology on two mature Minneluse waterflood analog units using engineering and numerical simulation; (5) predict waterflood and polymer flood performance of the West Kiehl field using numerical simulation.« less

  • Detailed evaluation of the West Kiehl alkaline-surfactant-polymer field project and its application to mature Minnelusa waterfloods. Annual report for the period January 1993--December 1993
    1994
    Co-Authors: M.j. Pitts, H. Surkalo, W.r. Mundorf
    Abstract:

    The combination of an interfacial tension agent and a mobility control agent has the potential to produce additional oil beyond a waterflood. The West Kiehl alkaline-surfactant-polymer project is the most advanced application of this chemical enhanced oil recovery technique. The West Kiehl alkaline-surfactant-polymer flood was initiated in September 1987 as a secondary application after primary recovery. A preliminary analysis of the West Kiehl alkaline-surfactant-polymer flood indicates that incremental oil of 20% of the original Stock Tank oil in place will be produced above waterflooding. The cost of the incremental oil will be less than $2.50 per incremental barrel. A statistical analysis of approximately 120 Minnelusa oil fields in the Powder River Basin indicates that the original Stock Tank oil in place exceeds one billion barrels. If the enhanced oil recovery technology implemented at West Kiehl field could be successfully applied to these fields, the potential incremental oil recovery would approach 200 million barrels. {open_quotes}Detailed Evaluation of the West Kiehl Alkaline-Surfactant-Polymer Field Project and Its Application to Mature Minnelusa Waterfloods{close_quotes} objective is to evaluate both the field performance of the alkaline-surfactant-polymer enhanced oil recovery technology as well as its potential application to other Minnelusa oil fields.

W.r. Mundorf - One of the best experts on this subject based on the ideXlab platform.

  • Detailed evaluation of the West Kiehl alkaline-surfactant-polymer field project and its application to mature Minnelusa waterfloods. Annual report for the period January 1993--December 1993
    1994
    Co-Authors: M.j. Pitts, H. Surkalo, W.r. Mundorf
    Abstract:

    The combination of an interfacial tension agent and a mobility control agent has the potential to produce additional oil beyond a waterflood. The West Kiehl alkaline-surfactant-polymer project is the most advanced application of this chemical enhanced oil recovery technique. The West Kiehl alkaline-surfactant-polymer flood was initiated in September 1987 as a secondary application after primary recovery. A preliminary analysis of the West Kiehl alkaline-surfactant-polymer flood indicates that incremental oil of 20% of the original Stock Tank oil in place will be produced above waterflooding. The cost of the incremental oil will be less than $2.50 per incremental barrel. A statistical analysis of approximately 120 Minnelusa oil fields in the Powder River Basin indicates that the original Stock Tank oil in place exceeds one billion barrels. If the enhanced oil recovery technology implemented at West Kiehl field could be successfully applied to these fields, the potential incremental oil recovery would approach 200 million barrels. {open_quotes}Detailed Evaluation of the West Kiehl Alkaline-Surfactant-Polymer Field Project and Its Application to Mature Minnelusa Waterfloods{close_quotes} objective is to evaluate both the field performance of the alkaline-surfactant-polymer enhanced oil recovery technology as well as its potential application to other Minnelusa oil fields.

Ghanshyabhai Tank - One of the best experts on this subject based on the ideXlab platform.

H. Surkalo - One of the best experts on this subject based on the ideXlab platform.

  • Detailed evaluation of the West Kiehl alkaline-surfactant-polymer field project and its application to mature Minnelusa waterfloods. Annual report for the period January 1993--December 1993
    1994
    Co-Authors: M.j. Pitts, H. Surkalo, W.r. Mundorf
    Abstract:

    The combination of an interfacial tension agent and a mobility control agent has the potential to produce additional oil beyond a waterflood. The West Kiehl alkaline-surfactant-polymer project is the most advanced application of this chemical enhanced oil recovery technique. The West Kiehl alkaline-surfactant-polymer flood was initiated in September 1987 as a secondary application after primary recovery. A preliminary analysis of the West Kiehl alkaline-surfactant-polymer flood indicates that incremental oil of 20% of the original Stock Tank oil in place will be produced above waterflooding. The cost of the incremental oil will be less than $2.50 per incremental barrel. A statistical analysis of approximately 120 Minnelusa oil fields in the Powder River Basin indicates that the original Stock Tank oil in place exceeds one billion barrels. If the enhanced oil recovery technology implemented at West Kiehl field could be successfully applied to these fields, the potential incremental oil recovery would approach 200 million barrels. {open_quotes}Detailed Evaluation of the West Kiehl Alkaline-Surfactant-Polymer Field Project and Its Application to Mature Minnelusa Waterfloods{close_quotes} objective is to evaluate both the field performance of the alkaline-surfactant-polymer enhanced oil recovery technology as well as its potential application to other Minnelusa oil fields.