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- Title
Improved Model for Equivalent Circulating Density and Improved Annular Pressure Drop Estimation: Drilling Approach.
- Authors
Uwaezuoke, N.; Igwilo, Kevin C.; Okoro, Emeka E.; Adenubi, S.; Obibuike, Julian U.
- Abstract
This study focused on the modelling of the pressure losses in the annulus and Equivalent Circulating Density (ECD) at low shear rate yield point. Laboratory measurements of rheological properties and mud weight were done according to API standard. The combined annular pressure loss model, Bingham Plastic and Power Law annular pressure loss models were then evaluated. The combined model gave the best result in terms of annular pressure loss and ECD. This is then followed by the Bingham plastic annular pressure loss model and the Power law annular pressure loss model. Predictions of equivalent circulation density for yield point and low shear rate yield point models showed absolute average error values of 0.0242 and 0.00581 respectively, compared with field data.
- Publication
Petroleum & Coal, 2022, Vol 64, Issue 1, p167
- ISSN
1335-3055
- Publication type
Academic Journal