Steam gave outcomes that indicated that the use of

Steam assisted gravity drainage,
which is a form of steam flooding that involves continuous injection of surface
generated steam into a horizontal injection well to reduce heavy oil viscosity
cause the oil to flow more easily towards a parallel drilled horizontal producer
well, is one of the most commonly used thermal stimulation technique for
extracting heavy crude oil.

This technique can, however, be
improved by generating steam downhole rather than injecting surface generated
steam. An in-situ steam generator will reduce heat loss and ensure the high
quality of the steam being injected into the reservoir which makes for an
improved oil recovery. Such a steam generator has been developed and a field
study to evaluate the performance of the in-situ steam generator in improving
oil recovery over conventional SAGD has been carried out on an abandoned heavy
shale oil field that is being rejuvenated.

We Will Write a Custom Essay Specifically
For You For Only $13.90/page!

order now

The results from this field
study were used in a reservoir simulation model generated using Schlumberger’s
Eclipse Compositional Simulator for steam stimulation. The model was history
matched to reflect the heavy shale oil field production under natural depletion
drive and steam stimulation. Several simulation runs were made to evaluate the
performance of the in-situ generator in a vertical well and for three steam-assisted
gravity drainage (SAGD) well arrangements scenarios. An analysis was also
carried out to compare the economic impact of the different simulation

The different sensitivity runs gave
outcomes that indicated that the use of the patented in-situ steam generator in
SAGD led to 360 barrels of incremental
production of oil per year over
conventional SAGD. The simulation study show that in-situ steam generation and
injection is an effective and environment-friendly enhanced oil recovery
technique that has the potential to replace conventional steam field
applications as it is a game changer. With the in-situ steam generator,
steam quality can be maintained 100% of the time throughout the life of the
process, which leads to guaranteed faster in-situ oil heating.