Ivor R. Ellul is an established presence in the Texas energy sector. He leads CiSK Ventures, Ltd, and delivers client-focused asset development solutions. Among Ivor R. Ellul’s areas of expertise are drilling technologies and enhanced oil recovery (EOR). US Department of Energy has shown that recovery with pumping units is responsible for as little as 10 percent of oil production per reservoir. The role of secondary recovery processes is crucial in ensuring that maximum value is derived from drilling operations. The most common secondary recovery technique involves the injection of fluids into the reservoir, thus assisting in the sweeping of oil towards the wellbore. This can be responsible for between 20 and 40 percent of oil eventually produced from a well. EOR, also known as tertiary recovery, can extract an additional 30 to 60 percent of oil that is otherwise unrecoverable. This is accomplished by any combination of gas injection, heating of the oil, and chemical injection. The advantage of the EOR approach is that it optimizes output from wells that have been drilled and may otherwise remain unused after having produced for a while. It also has a relatively small environmental footprint if managed appropriately. However, there are site specific constraints to EOR, including potential for geological limitations that lead to excessive costs.

1. Ivor R. Ellul

2. Ivor R. Ellul is an established presence in the Texas energy sector.
He leads CiSK Ventures, Ltd, and delivers client-focused asset
development solutions. Among Ivor R. Ellul’s areas of expertise
are drilling technologies and enhanced oil recovery (EOR).

3. US Department of Energy has shown that recovery with pumping
units is responsible for as little as 10 percent of oil production per
reservoir. The role of secondary recovery processes is crucial in
ensuring that maximum value is derived from drilling operations.

4. The most common secondary recovery technique involves the
injection of fluids into the reservoir, thus assisting in the
sweeping of oil towards the wellbore. This can be responsible for
between 20 and 40 percent of oil eventually produced from a well.
EOR, also known as tertiary recovery, can extract an additional 30
to 60 percent of oil that is otherwise unrecoverable. This is
accomplished by any combination of gas injection, heating of the
oil, and chemical injection.

5. The advantage of the EOR approach is that it optimizes output
from wells that have been drilled and may otherwise remain
unused after having produced for a while. It also has a relatively
small environmental footprint if managed appropriately. However,
there are site specific constraints to EOR, including potential for
geological limitations that lead to excessive costs.