This preview shows page 1. Sign up to view the full content.
Unformatted text preview: cement in one of the two long strings it ran in the Macondo well prior to the BP‐HZN‐MBI00192892. HAL0050590. 94
95 43 production casing. When BP drilled out the cement job on the 16‐inch intermediate long string, it discovered that the condition of the shoe track suggested that the cement had not set up properly, leading the cement to channel and result in lost returns. 96 5.
Cement Modeling Offshore operators use cement models to calculate real‐time equivalent circulating densities based on actual cement volumes, rates and fluid densities. By modeling various inputs, operators can assess, among other things, the likelihood that channeling in the cement will occur as it sets up. Channeling in cement is a problem because it can provide an opportunity for gas to flow through the cement, which is quantified as gas flow potential. For the Macondo well, BP used Halliburton’s OptiCem program to model pumping sequences of various fluid densities and volumes to determine whether the minimum formation fracture pressure would be exceeded. In all, Halli...
View Full Document