Modelling of Torque and Drag in Extended Reach Drilling Using Landmark Software

Abstract

The interest in torque and drag (T&D) issues has over the last years increased when the complexity of wells drilled become higher.Excessive drillstring T&D is one of the major limitations of extended reach drilling. The T&D models are used in the planning phase and during the drilling of a well, as a tool used for monitoring developing hole problems. In this project, T&D modelling process have been performed on a horizontal well,ABMO-1 horizontal well, located in field X, block 2b using Landmark software. The modelling process have been performed in three steps: first, the correct friction factor for cased hole section has been calculated from actual field data while the friction factor for openhole section has been assumed due to lack of sufficient actual data; second, the measured weights encountered during the drilling of the well have been matched with actual weight data; then T&D have been analyzed. Then, the horizontal section of ABMO-1 horizontal well has been assumed to be extended to form ABMO-1 ERD well and T&D have been analyzed to determine how long this well could be extended in the horizontal section without significant T&D problems in addition to determine the maximum weights and torques to be encountered during the drilling of ABMO-1 ERD well and therefore, determine the capability of the required drilling rig. The modelling results show that the ABMO-1 ERD well can be drilled using the same rig used to drill ABMO-1 horizontal well because the weights and torques to be encountered