| Autor: |
Saul Vieira Peliano, Andre Leibsohn Martins, J. M. Ribeiro, L. A. Calçada, H.F.L. Santos, G. V. S. Seufitelli, L. A. C. Meleiro, C. M. Scheid, V. Monteiro, Elessandre Alves de Souza |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Day 2 Tue, September 27, 2016. |
| DOI: |
10.2118/181377-ms |
| Popis: |
Among several possibilities for APB mitigation, the strategy of communicating the annulus with a formation is often considered. In this case, when pressure reaches formation fracture, fluid would be drained from the annulus and thus, the pressure would be released. This article presents a comprehensive methodology to tackle the ability of the drilling fluid to relieve pressure when this mitigation strategy is chosen. The model consists on the following iterative steps: Prediction of the solids sedimentation along the time, comprising the formation of three segregation zones; Prediction of the evolution of the permeability of the decanted layer; Prediction of the pressure evolution inside the annulus, based on PVT expressions experimentally obtained for compressible organic based drilling fluids; and Calculation of the draining process which governs pressure relief. The final package is a casing design tool which enables cost well integrity reliability. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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