Advanced Waterflood Management: Productivity Decline and EOR
Price to be provided upon request
Dates to be agreed with the customer
Instructor(-s): Pavel Bedrikovetsky
About the course
The course will provide an advanced understanding of waterflooding and EOR. The students will obtain knowledge necessary for cost-effective improvement of waterflooding by EOR.
The course is designed for production, and reservoir engineers, simulation and laboratory specialists involved in exploitation of oil and gas fields, water flooding, EOR, drilling, and well stimulation.
I BASIC WATERFLOODING
1.1 Reservoir physics (capillary phenomena, relative permeability, capillary pressure)
1.2 Mathematical model for waterflooding. Black-oil model. 3-D reservoir simulation. Analytical prediction of 1-D waterflood.
1.3 Upscaling. Fractional flow in heterogeneous reservoirs. Exercise: recovery factor calculations.
1.4 Routine laboratory studies of waterflooding. Advanced coreflood tests. Exercise: calculations fractional flow and relative permeability from lab data
1.5. Prevention and mitigation of water-cut increase and productivity decline
II LOW SALINITY FINES-ASSISTED WATERFLOODING
2.1 Capillary phenomena and wettability alteration during LowSal flloding
2.2 Physics of fines mobilisation, migration and permeability damage. Laboratory study
2.3 Reservoir simulation of low salinity fines-assisted waterflooding.
2.4 Analytical models for low salinity fines-assisted waterflooding. Exercise: comparison of normal and low salinity waterflooding.
2.5. Secondary and tertiary low-salinity waterflood
III POLYMER FLOODING - SECONDARY AND TERTIARY OPTIONS
3.1 Modern trademarks of industrial polymers: xantanes, polyacrilomides, nano-polymers
3.2 Physics of polymer flooding. Polymer adsorption, retention, resistance factor.
3.3 Analytical model for polymer flooding. Training exercises.
3.4. Laboratory studies for polymer injection and oil displacement: test planning and design, lab data interpretation.
3.4 Two field cases of polymer flooding: well behaviour, production history, reservoir studies, incremental recovery (Oman, Brazil)
IV SURFACTANT FLOODING
3.1 Modern trademarks of industrial cationic and anionic surfactants
3.2 Physics of surfactant flooding. Phase behaviour. Inner and Outer hydrocarbon phases. Phase diagrams oil-S-water. Surfactant adsorption and desorption.
3.3 Analytical model for surfactant flooding. Training exercises.
3.4. Laboratory studies for injection of surfactants and oil displacement: test planning and design, lab data interpretation. Effects of salinity and pH on recovery factor.
3.4 Field case of surfactant flooding: production history, reservoir studies, incremental recovery (USA).
V COMBINES EOR TECHNOLOGIES
5.1. Low-salinity polymer and surfactant flooding
5.2. WAG and CO2-WAG
5.3. ASP – field cases in Russia and Bahrein