Halliburton has announced the delivery of WellLife III cementing service, a comprehensive solution designed to increase the economic life of wells. The solution incorporates three synergistic components: diagnostics tools, engineered cement systems, and zonal isolation assurance tool.
With this new service Halliburton continues to evolve the cementing operation beyond the conventional cement-design method that predominantly focuses on well-construction activities. This service is an interventionless react-and-respond solution designed to help address the industrywide challenge of the loss of zonal isolation due to changes in the wellbore that can stress the cement sheath and lead to destabilization at any point during the life of the well.
Along with pressure events and temperature cycling, wells are subjected to substantial stresses from changes in the surrounding formation over years, even decades. The annular seal can succumb to these forces, compromising zonal isolation and, thus, reducing the economics of the well by inhibiting production and/or requiring costly remediation.
"Up until now, the well-construction industry has focused on cement properties such as cement placement, preventing gas migration and compressive strength," said Tommy Roth, vice president of Cementing, Halliburton's Completion and Production Division. "This approach has been necessary to optimize drilling time but does not account for maintaining zonal isolation for the life of the well. WellLife III cementing service enables zonal isolation over time, even when the well is subjected to various stresses. Halliburton is changing the industry's fundamental approach to cementing."
WellLife III cementing service is designed to stop the flow of unwanted fluid and gas in the annulus at any time during the life of the well, preserving production while reducing or even eliminating costly remediation. This comprehensive solution includes:
With increased complexities of well designs and harsher environments, the potential loss of cement-sheath integrity resulting in annular pressure and/or the loss of downhole pressure containment will only become a larger issue.
"For years the industry has tended to view cementing as a separate event from well performance," said David King, president, Halliburton's Completion and Production Division. "However, Halliburton has scientifically investigated the potential damage to the cement sheath created by the cumulative stresses in and around the wellbore. We are challenging conventional thinking by taking the stand that it is no longer sufficient to focus solely on achieving a competent cement bond log when the technologies are now available from Halliburton for cementing systems to be designed for years of use and abuse."
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