Advancements in drilling, completions, and intervention technology have allowed extended and multiple reservoir targets to be accessed from a single wellbore. The opportunity can be further maximised by segmenting and individually isolating zones along these prolonged wellbores.
This forum is focused on looking at the future of selectively isolating geological sequences from one another, to assure containment and integrity, whether for remedial or other types of activities that requires isolation. The variables involved are almost infinite: what is in contact with what and which type of medium is best suited for the task in hand. The reasons for isolation vary from permanent containment to temporarily isolating a reservoir through a variety of materials, e.g., novel resins, rubber, cement and expandable technologies, with new developments in isolating requirements for wellbores on the horizon.
The isolation has to take into account the complexities of the environment; high (HPHT) or low pressure/temperature (LTLP) extremes, gas migration, unconsolidated formations, cement integrity of long liners and multiple laterals. The selected isolation method has to be compatible with the production and injection medium, as well as operations. Some of these challenges include CO2, H2S, fracturing, and acid stimulation.
Wellbore and reservoir developments can challenge the isolation and the integrity of the isolation. Production and reservoir monitoring requirements may wish to introduce a cabled system passing through the barrier medium. Some of these technologies can provide assistance in confirming or identifying the isolation; these can include new and innovative equipment, either acoustic or temperature monitoring identifying fluctuations allowing the interpretation of the isolations effectiveness. With a challenge on what is happening in research and development in evaluation methodologies and techniques for verification and assessment of existing isolations behind multiple casings, which is a growing industry requirement for further use or abandonment of wells. The challenges in research and development, evaluation methodologies, techniques for verification, and assessment in existing isolations behind multiple casings has increased as multiple casing have become the industry requirement in abandoned wells.
Selection: what is acceptable now? What perhaps will be acceptable either through a robust well design or what about further use, extending its lifecycle, or plug and abandonment?
This forum will look at the future of effective zonal isolation, the application of zonal isolation techniques to specific well types, and the influence of wellbore construction on zonal isolation selection.
SPE forums are unique, by-invitation-only SPE events that bring together top technologists, innovators, and managers to address a specific industry challenge. Participants are encouraged to come prepared to contribute their experience and knowledge, rather than be spectators or students.
The forum is a limited-attendance meeting for up to 75 people, designed for professionals in the oil and gas industry interested in the design and construction of wells. The forum is aimed at people whose principal job falls into any of the following categories:
The following will prepare attendees for what to expect when attending a forum: