Problems associated with the recovery of heavy viscous oil are key challenges for the upstream in... more Problems associated with the recovery of heavy viscous oil are key challenges for the upstream industry. In this research work, systematic experimental studies of chemical flooding were conducted for heavy crude reservoir. Alkali-Surfactant-Polymer (ASP) flooding in the reservoir may enhance the crude oil recovery; it may lead to adsorption of flooded chemicals. These flooded chemicals are very expensive and high rate of adsorption will make the recovery uneconomical. Analysis of petroleum core flood effluent has to be done, to study dynamic adsorption. This experimental work shows the selectivity of ASP flooding for heavy oil and increase in percentage recovery of heavy oil with optimizing ASP concentrations. The results also show that polymer flooding is quite effective at low oil saturation.
Oil and gas field produced water disposal is very serious issue in hydrocarbon industry. Corrosio... more Oil and gas field produced water disposal is very serious issue in hydrocarbon industry. Corrosion occurred by this produced water from oil industry is very difficult to be predicted. Produced water reinjection, treatment and disposal are a huge problem in onshore as well as offshore fields. As the reservoir depletes, mostly the water cut increases up to 90%, thus increasing the chances of corrosion of the surface and subsurface equipment. In this experimental work corrosion studies were undertaken on steel tubular at reservoir temperature. It is essential to remove the dissolved oxygen to control corrosion. The dissolved oxygen content in effluent was found to be high. The dose of sodium sulphite as oxygen scavenger after treatment of the injection water in the laboratory is optimized. Dissolved oxygen may vary from time to time; therefore the dose of oxygen scavenger may be changed accordingly for effective removal of oxygen. Sodium sulphide requires a catalyst like Cobaltous chlo...
Problems associated with the recovery of heavy viscous oil are key challenges for the upstream in... more Problems associated with the recovery of heavy viscous oil are key challenges for the upstream industry. In this research work, systematic experimental studies of chemical flooding were conducted for heavy crude reservoir. Alkali-Surfactant-Polymer (ASP) flooding in the reservoir may enhance the crude oil recovery; it may lead to adsorption of flooded chemicals. These flooded chemicals are very expensive and high rate of adsorption will make the recovery uneconomical. Analysis of petroleum core flood effluent has to be done, to study dynamic adsorption. This experimental work shows the selectivity of ASP flooding for heavy oil and increase in percentage recovery of heavy oil with optimizing ASP concentrations. The results also show that polymer flooding is quite effective at low oil saturation.
Oil and gas field produced water disposal is very serious issue in hydrocarbon industry. Corrosio... more Oil and gas field produced water disposal is very serious issue in hydrocarbon industry. Corrosion occurred by this produced water from oil industry is very difficult to be predicted. Produced water reinjection, treatment and disposal are a huge problem in onshore as well as offshore fields. As the reservoir depletes, mostly the water cut increases up to 90%, thus increasing the chances of corrosion of the surface and subsurface equipment. In this experimental work corrosion studies were undertaken on steel tubular at reservoir temperature. It is essential to remove the dissolved oxygen to control corrosion. The dissolved oxygen content in effluent was found to be high. The dose of sodium sulphite as oxygen scavenger after treatment of the injection water in the laboratory is optimized. Dissolved oxygen may vary from time to time; therefore the dose of oxygen scavenger may be changed accordingly for effective removal of oxygen. Sodium sulphide requires a catalyst like Cobaltous chlo...
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