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As the oil and gas industry matures, we move to exploitation
and exploration operations in ever more challenging reservoir applications.
These include low permeability formations, pressure depleted or subnormally
pressured reservoirs and formations which may exhibit a wide range of potential
sensitivities to both fluids and practices used to drill, complete and produce
wells.
Formation damage has long been recognized as a potential source of reduced
productivity and injectivity in both horizontal and vertical wells. This information-packed
presentation provides a concise overview of the state-of-the-art, complete
with computer animated illustrative reservoir examples of:
• What formation damage is
• Where and when we need to be concerned about formation damage (it is
not always the severe problem that it may appear to be from superficial analysis)
• Common mechanisms of formation damage, including mechanical, chemical,
thermal and biological mechanisms, — including such issues as fines migration,
invasion of external suspended solids in fluid systems during overbalanced
drilling and completion or injection operations, relative permeability effects
such as water blocking and hydrocarbon trapping and condensate dropout, bit
or drill string induced mechanical damage, fluid-rock (clay) interactions,
fluid-fluid interactions (scales, precipitates, emulsions), asphaltene and
wax deposition issues, wettability alterations and various types of biological/bacterial
damage and thermally induced formation damage issues
• Impact of formation damage on the productivity of horizontal and vertical
wells
• Whether formation damage is more of a concern when drilling horizontal
wells
• How we evaluate formation damage issues prior to drilling and completing
• How we reduce the impact of formation damage (specialty fluid systems
and practices such as underbalanced drilling, etc.).
This presentation is suitable for interest levels ranging from the novice
to the experienced industry professional.
*IMPORTANT NOTE: During the course of Brant Bennion’s term as Petroleum
Society Chairman, he will be visiting all of the Sections and providing his
Distinguished Lecture to each Section as a feature of his visit. Therefore,
all arrangements (i.e., logistics and costs) for bringing Brant’s Distinguished
Lecture to the Sections will be borne by the Petroleum Society National Office
in Calgary.
