... technology conference salt formation casing design upstream oil & gas contamination casing and cementing brazil deepwater slurry microcement shoe squeeze cement schlumberger reservoir characterization stage cement job stage collar operation injectivity cement job case study formation...

... of these waters, becoming the massive salt formations, one of the major challenges faced, not only for drilling methods and techniques, but for zonal isolation in general terms, related to cementing operations. Cementing jobs executed in salt environments require cement slurries with specific concentrations...

... compaction caused by formation depletion, the capability to fill lost-circulation voids compared to nonfoamed slurries, its excellent displacement properties, and good cement bond results, making it an excellent solution for this challenging scenario. This paper presents a case history where foamed cement...

... length with proper thickening time distributed along the volume pumped. This technique avoids the long WOC times necessary to achieve adequate compressive strength. The release tool enables running sacrificial pipe; placing cement through the sacrificial pipe; displacing cement slurry with a dart, which...

... cement-slurry placement. Additionally, lost circulation materials (LCMs) should be incorporated into the cement slurry to help control loss zones. This paper discusses the field implementation procedures and the cement-slurry design tailored for deepwater wells in offshore Brazil, which helped minimize...

.... This paper discusses the application of a new resin for a casing-leakage problem caused by a channel after the primary cementing operation. Conventional cements and slurries are commonly used to repair this challenge; however, these solutions are limited, at best. Depending on the channel size, well...

... select the best approach and tool to achieve expected cementing results. This allows densities to be defined as well as slurry and spacer volumes, displacement rates, and the recommended minimum SBP necessary for safe execution, thus helping minimize losses and avoid kicks. For the case discussed, casing...

... fluids from the well during cementing operations. The fibers are compatible with both cement slurries and mud. They work by removing the mud from the casing or formation through two mechanisms: by mechanical cleaning and by attracting the nonaqueous compound of the mud toward itself by hydrophobic...

...% on the total drilling time. The saline and production zones are cased and cemented in the same phase, requiring a cement slurry design that minimizes salt dissolution and, at the same time, has specific properties for production zone isolation. The quality of this cement job is key for the success...

... and compositions. In doing so, the effect of the presence of hydrates on the field life thermal hydraulics, including the production profile could be modelled. Some counter intuitive results were found in the comparison to conventional technologies; hydrate slurries are not all bad news for the back pressure...

..., setting long plugs in a single attempt, inability to use mechanical separators, variety of local regulations and more. The accepted industry practice is to set a plug of 100 250 m in length. Longer plugs increase operational challenges such as stuck pipe. Slurry design in deepwater is also critical due...

... sponge ball cement plug cement plug job drilling fluid selection and formulation drilling fluids and materials circulation drill pipe contamination compressive strength slurry friction pressure plug simulation operation cement placement spacer drilling fluid property cement...

... Abstract Guaranteeing zonal isolation in front of a gas zone is a complex task. It depends on the complete removal of drilling fluid, drilling fluid filter cake and cuttings from the annulus, on the proper design of a cement slurry and on the long term sheath integrity. This work focus...