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SPE WA Distinguished Lecturer – Wellbore Integrity Restoration; New Life for Old Wells
Abstract: As wellbores age, the potential for loss of wellbore integrity due to challenges such as, corrosion, stress, fatigue and other factors increase. Stimulation and tertiary recovery methods such as CO2 floods, as well as the introduction of disposal into depleted zones can negatively affect the wellbore by introducing conditions outside of the initial well design criteria. In a given field, many if not all wells will experience similar issues because the well design and life-of-well conditions are similar. Restoring wellbore integrity is a viable alternative to plugging and abandoning these compromised wellbores. Both current and potential issues in production casing and tubing strings can be identified through a number…
Find out more »SPE WA Technical Luncheon – Drill or not to drill?
Abstract: A learning system, supported by binomial probability theory, has the characteristic that newly acquired information is incorporated into the geological model thereby revising the GPOS of subsequent discovery. The informed Explorationist is therefore presented with a decision-gated or staged approach to divest/relinquish or continue exploration. The application of a learning system offers improved discovery frequency for the least cost to explore. This result is compared to a repetitive-system baseline where GPOS remains static throughout the exploration campaign. The disadvantage of a learning system is the time or duration required to absorb new information following each stage of data acquisition. This disadvantage drives the need for Explorationists to select efficient…
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