Well integrity/control
The authors reach conclusions that the industry should define a standard testing method to improve swelling performance, including validation of repeatability, to complement existing guidelines.
This paper presents the development of an advanced simulation tool aimed at providing a better understanding of the complex fluid-displacement phenomena present in well-cementing processes.
This paper examines the effects of cement voids and microannuli on the collapse resistance of pipe/cement/pipe systems with void angles ranging from 0º to 70º.
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SponsoredWellbore deformation can occur at any stage in the life of a well. Whether a result of changes in temperature, pressure or tectonic forces, wellbore deformation may result in serious downhole issues such as restricted access for interventions or the loss of well integrity that may ultimately lead to premature well abandonment and significantly reduced economic perform… -
A wellbore repair tool was successfully deployed to rectify collapsed tubing in a remote well off the coast of Papua New Guinea.
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This paper’s authors describe the development of a coiled tubing (CT) nitrogen-lift design in which CT and geothermal reservoir simulations were combined to overcome modeling limitations.
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SponsoredWell monitoring hasn’t been easy. But it’s something that has to be done. Remote oil and gas wells are notoriously difficult to monitor. But new technology may make them some of the most advanced sites out there.
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Contractor renews incident-response partnership for 2 additional years.
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The average geothermal gradient in the subject deepwater field in Nigeria is 4.37°C/100 m, nearly twice the gradient in most fields. As a result, the magnitude of the expected annular pressure buildup (APB) during steady-state production is large enough to threaten well integrity.
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The complete paper discusses a geophone array, including four, three-component geophones deployed by wireline, that provides a solution for this problem by creating a 3D map of the acoustic environment.
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Integrity (noun): the condition of having no part or element wanting; unbroken state; material wholeness, completeness, entirety. While reviewing the abstracts, I was struck by the huge range of challenges to maintaining “material wholeness” beyond the routine testing of tree and safety valves.
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In 2013, a technology-development project began that digitized, automated, and applied analytics to blowout preventer pressure testing. As a result of the deployment of automated BOP testing, significant improvements have been achieved in process safety, personal safety, and rig-time savings.
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This paper discusses a new, comprehensive cuttings-transport model designed to enable safe and improved hole-cleaning operations.
